#153 fix invalid utf8 using same implementation as the standard library

Add tests for int64

.codecov.yml

@@ -0,0 +1,3 @@
+ignore:
+    - "output_tests/.*"
+

.gitignore

@@ -0,0 +1,3 @@
+.idea
+/coverage.txt
+/profile.out

.travis.yml

@@ -0,0 +1,13 @@
+language: go
+
+go:
+  - 1.8.x
+
+before_install:
+  - go get -t -v ./...
+
+script:
+  - ./test.sh
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)

README.md

@@ -1,60 +1,67 @@
-jsoniter (json-iterator) is fast and flexible JSON parser available in [Java](https://github.com/json-iterator/java) and [Go](https://github.com/json-iterator/go)
+[![Sourcegraph](https://sourcegraph.com/github.com/json-iterator/go/-/badge.svg)](https://sourcegraph.com/github.com/json-iterator/go?badge)
+[![GoDoc](http://img.shields.io/badge/go-documentation-blue.svg?style=flat-square)](http://godoc.org/github.com/json-iterator/go)
+[![Build Status](https://travis-ci.org/json-iterator/go.svg?branch=master)](https://travis-ci.org/json-iterator/go)
+[![codecov](https://codecov.io/gh/json-iterator/go/branch/master/graph/badge.svg)](https://codecov.io/gh/json-iterator/go)
+[![rcard](https://goreportcard.com/badge/github.com/json-iterator/go)](https://goreportcard.com/report/github.com/json-iterator/go)
+[![License](http://img.shields.io/badge/license-mit-blue.svg?style=flat-square)](https://raw.githubusercontent.com/json-iterator/go/master/LICENSE)
+[![Gitter chat](https://badges.gitter.im/gitterHQ/gitter.png)](https://gitter.im/json-iterator/Lobby)
 
-# Why jsoniter?
+A high-performance 100% compatible drop-in replacement of "encoding/json"
 
-* Jsoniter is the fastest JSON parser. It could be up to 10x faster than normal parser, data binding included. Shameless self [benchmark](http://jsoniter.com/benchmark.html)
-* Extremely flexible api. You can mix and match three different styles: bind-api, any-api or iterator-api. Checkout your [api choices](http://jsoniter.com/api.html)
-* Unique iterator api can iterate through JSON directly, zero memory allocation! See how [iterator](http://jsoniter.com/api.html#iterator-api) works
+```
+Go开发者们请加入我们，滴滴出行平台技术部 taowen@didichuxing.com
+```
 
-# Show off
+# Benchmark
 
-Here is a quick show off, for more complete report you can checkout the full [benchmark](http://jsoniter.com/benchmark.html) with [in-depth optimization](http://jsoniter.com/benchmark.html#optimization-used) to back the numbers up
+![benchmark](http://jsoniter.com/benchmarks/go-benchmark.png)
 
-![go-medium](http://jsoniter.com/benchmarks/go-medium.png)
+Source code: https://github.com/json-iterator/go-benchmark/blob/master/src/github.com/json-iterator/go-benchmark/benchmark_medium_payload_test.go
 
-# Bind-API is the best
+Raw Result (easyjson requires static code generation)
 
-Bind-api should always be the first choice. Given this JSON document `[0,1,2,3]`
+| | ns/op | allocation bytes | allocation times |
+| --- | --- | --- | --- |
+| std decode | 35510 ns/op | 1960 B/op | 99 allocs/op |
+| easyjson decode | 8499 ns/op | 160 B/op | 4 allocs/op |
+| jsoniter decode | 5623 ns/op | 160 B/op | 3 allocs/op |
+| std encode | 2213 ns/op | 712 B/op | 5 allocs/op |
+| easyjson encode | 883 ns/op | 576 B/op | 3 allocs/op |
+| jsoniter encode | 837 ns/op | 384 B/op | 4 allocs/op |
 
-Parse with Go bind-api
+# Usage
+
+100% compatibility with standard lib
+
+Replace
+
+```go
+import "encoding/json"
+json.Marshal(&data)
+```
+
+with 
 
 ```go
 import "github.com/json-iterator/go"
-iter := jsoniter.ParseString(`[0,1,2,3]`)
-val := []int{}
-iter.Read(&val)
-fmt.Println(val[3])
+jsoniter.Marshal(&data)
 ```
 
-# Iterator-API for quick extraction
+Replace
 
-When you do not need to get all the data back, just extract some.
+```go
+import "encoding/json"
+json.Unmarshal(input, &data)
+```
 
-Parse with Go iterator-api
+with
 
 ```go
 import "github.com/json-iterator/go"
-iter := ParseString(`[0, [1, 2], [3, 4], 5]`)
-count := 0
-for iter.ReadArray() {
-    iter.skip()
-    count++
-}
-fmt.Println(count) // 4
+jsoniter.Unmarshal(input, &data)
 ```
 
-# Any-API for maximum flexibility
-
-Parse with Go any-api
-
-```go
-import "github.com/json-iterator/go"
-iter := jsoniter.ParseString(`[{"field1":"11","field2":"12"},{"field1":"21","field2":"22"}]`)
-val := iter.ReadAny()
-fmt.Println(val.ToInt(1, "field2")) // 22
-```
-
-Notice you can extract from nested data structure, and convert any type to the type to you want. 
+[More documentation](http://jsoniter.com/migrate-from-go-std.html)
 
 # How to get
 
@@ -64,4 +71,10 @@ go get github.com/json-iterator/go
 
 # Contribution Welcomed !
 
-Report issue or pull request, or email taowen@gmail.com, or [![Gitter chat](https://badges.gitter.im/gitterHQ/gitter.png)](https://gitter.im/json-iterator/Lobby)
+Contributors
+
+* [thockin](https://github.com/thockin) 
+* [mattn](https://github.com/mattn)
+* [cch123](https://github.com/cch123)
+
+Report issue or pull request, or email taowen@gmail.com, or [![Gitter chat](https://badges.gitter.im/gitterHQ/gitter.png)](https://gitter.im/json-iterator/Lobby)

any.go

@@ -1,427 +0,0 @@
-package jsoniter
-
-import (
-	"fmt"
-	"reflect"
-	"strconv"
-)
-
-type Any struct {
-	val   interface{}
-	Error error
-	LastAccessed interface{}
-}
-
-func MakeAny(val interface{}) *Any {
-	return &Any{val, nil, nil}
-}
-
-func (any *Any) Get(keys ...interface{}) interface{} {
-	ret, err := getPath(any.val, keys...)
-	any.LastAccessed = ret
-	if err != nil {
-		any.Error = err
-		return "";
-	}
-	return ret
-}
-
-func (any *Any) GetValueType(keys ...interface{}) ValueType {
-	ret, err := getPath(any.val, keys...)
-	any.LastAccessed = ret
-	if err != nil {
-		any.Error = err
-		return Invalid;
-	}
-
-	switch reflect.TypeOf(ret).Kind() {
-	case reflect.Uint8:
-		return Number;
-	case reflect.Int8:
-		return Number;
-	case reflect.Uint16:
-		return Number;
-	case reflect.Int16:
-		return Number;
-	case reflect.Uint32:
-		return Number;
-	case reflect.Int32:
-		return Number;
-	case reflect.Uint64:
-		return Number;
-	case reflect.Int64:
-		return Number;
-	case reflect.Int:
-		return Number;
-	case reflect.Uint:
-		return Number;
-	case reflect.Float32:
-		return Number;
-	case reflect.Float64:
-		return Number;
-	case reflect.String:
-		return String;
-	case reflect.Bool:
-		return Bool;
-	case reflect.Array:
-		return Array;
-	case reflect.Struct:
-		return Object;
-	default:
-		return Invalid
-	}
-}
-
-func (any *Any) ToString(keys ...interface{}) string {
-	ret, err := getPath(any.val, keys...)
-	any.LastAccessed = ret
-	if err != nil {
-		any.Error = err
-		return "";
-	}
-	switch ret := ret.(type) {
-	case uint8:
-		return strconv.FormatInt(int64(ret), 10);
-	case int8:
-		return strconv.FormatInt(int64(ret), 10);
-	case uint16:
-		return strconv.FormatInt(int64(ret), 10);
-	case int16:
-		return strconv.FormatInt(int64(ret), 10);
-	case uint32:
-		return strconv.FormatInt(int64(ret), 10);
-	case int32:
-		return strconv.FormatInt(int64(ret), 10);
-	case uint64:
-		return strconv.FormatUint(uint64(ret), 10);
-	case int64:
-		return strconv.FormatInt(int64(ret), 10);
-	case int:
-		return strconv.FormatInt(int64(ret), 10);
-	case uint:
-		return strconv.FormatInt(int64(ret), 10);
-	case float32:
-		return strconv.FormatFloat(float64(ret), 'E', -1, 32);
-	case float64:
-		return strconv.FormatFloat(ret, 'E', -1, 64);
-	case string:
-		return ret
-	default:
-		return fmt.Sprintf("%v", ret)
-	}
-}
-
-func (any *Any) ToUint8(keys ...interface{}) uint8 {
-	ret, err := getPathAsInt64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return uint8(ret)
-}
-
-func (any *Any) ToInt8(keys ...interface{}) int8 {
-	ret, err := getPathAsInt64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return int8(ret)
-}
-
-func (any *Any) ToUint16(keys ...interface{}) uint16 {
-	ret, err := getPathAsInt64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return uint16(ret)
-}
-
-func (any *Any) ToInt16(keys ...interface{}) int16 {
-	ret, err := getPathAsInt64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return int16(ret)
-}
-
-func (any *Any) ToUint32(keys ...interface{}) uint32 {
-	ret, err := getPathAsInt64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return uint32(ret)
-}
-
-func (any *Any) ToInt32(keys ...interface{}) int32 {
-	ret, err := getPathAsInt64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return int32(ret)
-}
-
-func (any *Any) ToUint64(keys ...interface{}) uint64 {
-	ret, err := getPathAsUint64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return uint64(ret)
-}
-
-func (any *Any) ToInt64(keys ...interface{}) int64 {
-	ret, err := getPathAsInt64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return int64(ret)
-}
-
-func (any *Any) ToInt(keys ...interface{}) int {
-	ret, err := getPathAsInt64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return int(ret)
-}
-
-func (any *Any) ToUint(keys ...interface{}) uint {
-	ret, err := getPathAsInt64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return uint(ret)
-}
-
-func (any *Any) ToFloat32(keys ...interface{}) float32 {
-	ret, err := getPathAsFloat64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return float32(ret)
-}
-
-func (any *Any) ToFloat64(keys ...interface{}) float64 {
-	ret, err := getPathAsFloat64(any, keys...)
-	if err != nil {
-		any.Error = err
-		return 0;
-	}
-	return ret
-}
-
-func (any *Any) ToBool(keys ...interface{}) bool {
-	ret, err := getPath(any.val, keys...)
-	any.LastAccessed = ret
-	if err != nil {
-		any.Error = err
-		return false;
-	}
-	typedRet, ok := ret.(bool)
-	if !ok {
-		any.Error = fmt.Errorf("%v is not bool", ret)
-		return false;
-	}
-	return typedRet
-}
-
-func (any *Any) IsNull(keys ...interface{}) bool {
-	ret, err := getPath(any.val, keys...)
-	any.LastAccessed = ret
-	if err != nil {
-		any.Error = err
-		return false;
-	}
-	return reflect.ValueOf(ret).IsNil()
-}
-
-func getPathAsInt64(any *Any, keys ...interface{}) (int64, error) {
-	ret, err := getPath(any.val, keys...)
-	any.LastAccessed = ret
-	if err != nil {
-		any.Error = err
-		return 0, err
-	}
-	switch ret := ret.(type) {
-	case uint8:
-		return int64(ret), nil;
-	case int8:
-		return int64(ret), nil;
-	case uint16:
-		return int64(ret), nil;
-	case int16:
-		return int64(ret), nil;
-	case uint32:
-		return int64(ret), nil;
-	case int32:
-		return int64(ret), nil;
-	case uint64:
-		return int64(ret), nil;
-	case int64:
-		return int64(ret), nil;
-	case int:
-		return int64(ret), nil;
-	case uint:
-		return int64(ret), nil;
-	case float32:
-		return int64(ret), nil;
-	case float64:
-		return int64(ret), nil;
-	case string:
-		intVal, err := strconv.ParseInt(ret, 10, 64)
-		if err != nil {
-			return 0, err
-		}
-		return intVal, nil;
-	default:
-		return 0, fmt.Errorf("%v is not number", ret)
-	}
-}
-
-func getPathAsUint64(any *Any, keys ...interface{}) (uint64, error) {
-	ret, err := getPath(any.val, keys...)
-	any.LastAccessed = ret
-	if err != nil {
-		any.Error = err
-		return 0, err
-	}
-	switch ret := ret.(type) {
-	case uint8:
-		return uint64(ret), nil;
-	case int8:
-		return uint64(ret), nil;
-	case uint16:
-		return uint64(ret), nil;
-	case int16:
-		return uint64(ret), nil;
-	case uint32:
-		return uint64(ret), nil;
-	case int32:
-		return uint64(ret), nil;
-	case uint64:
-		return uint64(ret), nil;
-	case int64:
-		return uint64(ret), nil;
-	case int:
-		return uint64(ret), nil;
-	case uint:
-		return uint64(ret), nil;
-	case float32:
-		return uint64(ret), nil;
-	case float64:
-		return uint64(ret), nil;
-	case string:
-		intVal, err := strconv.ParseUint(ret, 10, 64)
-		if err != nil {
-			return 0, err
-		}
-		return intVal, nil;
-	default:
-		return 0, fmt.Errorf("%v is not number", ret)
-	}
-}
-
-func getPathAsFloat64(any *Any, keys ...interface{}) (float64, error) {
-	ret, err := getPath(any.val, keys...)
-	any.LastAccessed = ret
-	if err != nil {
-		any.Error = err
-		return 0, err
-	}
-	switch ret := ret.(type) {
-	case uint8:
-		return float64(ret), nil;
-	case int8:
-		return float64(ret), nil;
-	case uint16:
-		return float64(ret), nil;
-	case int16:
-		return float64(ret), nil;
-	case uint32:
-		return float64(ret), nil;
-	case int32:
-		return float64(ret), nil;
-	case uint64:
-		return float64(ret), nil;
-	case int64:
-		return float64(ret), nil;
-	case int:
-		return float64(ret), nil;
-	case uint:
-		return float64(ret), nil;
-	case float32:
-		return float64(ret), nil;
-	case float64:
-		return float64(ret), nil;
-	case string:
-		floatVal, err := strconv.ParseFloat(ret, 64)
-		if err != nil {
-			return 0, err
-		}
-		return floatVal, nil;
-	default:
-		return 0, fmt.Errorf("%v is not number", ret)
-	}
-}
-
-func getPath(val interface{}, keys ...interface{}) (interface{}, error) {
-	if (len(keys) == 0) {
-		return val, nil;
-	}
-	switch key := keys[0].(type) {
-	case string:
-		nextVal, err := getFromMap(val, key)
-		if err != nil {
-			return nil, err
-		}
-		nextKeys := make([]interface{}, len(keys) - 1)
-		copy(nextKeys, keys[1:])
-		return getPath(nextVal, nextKeys...)
-	case int:
-		nextVal, err := getFromArray(val, key)
-		if err != nil {
-			return nil, err
-		}
-		nextKeys := make([]interface{}, len(keys) - 1)
-		copy(nextKeys, keys[1:])
-		return getPath(nextVal, nextKeys...)
-	default:
-		return nil, fmt.Errorf("%v is not string or int", keys[0]);
-	}
-	return getPath(val, keys);
-}
-
-func getFromMap(val interface{}, key string) (interface{}, error) {
-	mapVal, ok := val.(map[string]interface{})
-	if !ok {
-		return nil, fmt.Errorf("%v is not map[string]interface{}", val)
-	}
-	ret, found := mapVal[key]
-	if !found {
-		return nil, fmt.Errorf("%v not found in %v", key, mapVal)
-	}
-	return ret, nil
-}
-
-func getFromArray(val interface{}, key int) (interface{}, error) {
-	arrayVal, ok := val.([]interface{})
-	if !ok {
-		return nil, fmt.Errorf("%v is not []interface{}", val)
-	}
-	if key >= len(arrayVal) {
-		return nil, fmt.Errorf("%v exceed %v", key, arrayVal)
-	}
-	if key < 0 {
-		return nil, fmt.Errorf("%v exceed %v", key, arrayVal)
-	}
-	return arrayVal[key], nil
-}

any_test.go

@@ -1,72 +0,0 @@
-package jsoniter
-
-import (
-	"testing"
-	"fmt"
-)
-
-func Test_get_from_map(t *testing.T) {
-	any := Any{val: map[string]interface{}{
-		"hello": "world",
-	}}
-	if any.ToString("hello") != "world" {
-		t.FailNow()
-	}
-}
-
-func Test_get_from_array(t *testing.T) {
-	any := Any{val: []interface{}{
-		"hello", "world",
-	}}
-	if any.ToString(1) != "world" {
-		t.FailNow()
-	}
-}
-
-func Test_get_int(t *testing.T) {
-	any := Any{val: []interface{}{
-		1, 2, 3,
-	}}
-	if any.ToInt(1) != 2 {
-		t.FailNow()
-	}
-}
-
-func Test_is_null(t *testing.T) {
-	any := Any{val: []interface{}{
-		1, 2, 3,
-	}}
-	if any.IsNull() != false {
-		t.FailNow()
-	}
-}
-
-func Test_get_bool(t *testing.T) {
-	any := Any{val: []interface{}{
-		true, true, false,
-	}}
-	if any.ToBool(1) != true {
-		t.FailNow()
-	}
-}
-
-func Test_nested_read(t *testing.T) {
-	any := Any{val: []interface{}{
-		true, map[string]interface{}{
-			"hello": "world",
-		}, false,
-	}}
-	if any.ToString(1, "hello") != "world" {
-		fmt.Println(any.Error)
-		t.FailNow()
-	}
-}
-
-func Test_int_to_string(t *testing.T) {
-	any := Any{val: []interface{}{
-		true, 5, false,
-	}}
-	if any.ToString(1) != "5" {
-		t.FailNow()
-	}
-}

example_test.go

@@ -0,0 +1,95 @@
+package jsoniter
+
+import (
+	"fmt"
+	"os"
+)
+
+func ExampleMarshal() {
+	type ColorGroup struct {
+		ID     int
+		Name   string
+		Colors []string
+	}
+	group := ColorGroup{
+		ID:     1,
+		Name:   "Reds",
+		Colors: []string{"Crimson", "Red", "Ruby", "Maroon"},
+	}
+	b, err := Marshal(group)
+	if err != nil {
+		fmt.Println("error:", err)
+	}
+	os.Stdout.Write(b)
+	// Output:
+	// {"ID":1,"Name":"Reds","Colors":["Crimson","Red","Ruby","Maroon"]}
+}
+
+func ExampleUnmarshal() {
+	var jsonBlob = []byte(`[
+		{"Name": "Platypus", "Order": "Monotremata"},
+		{"Name": "Quoll",    "Order": "Dasyuromorphia"}
+	]`)
+	type Animal struct {
+		Name  string
+		Order string
+	}
+	var animals []Animal
+	err := Unmarshal(jsonBlob, &animals)
+	if err != nil {
+		fmt.Println("error:", err)
+	}
+	fmt.Printf("%+v", animals)
+	// Output:
+	// [{Name:Platypus Order:Monotremata} {Name:Quoll Order:Dasyuromorphia}]
+}
+
+func ExampleConfigFastest_Marshal() {
+	type ColorGroup struct {
+		ID     int
+		Name   string
+		Colors []string
+	}
+	group := ColorGroup{
+		ID:     1,
+		Name:   "Reds",
+		Colors: []string{"Crimson", "Red", "Ruby", "Maroon"},
+	}
+	stream := ConfigFastest.BorrowStream(nil)
+	defer ConfigFastest.ReturnStream(stream)
+	stream.WriteVal(group)
+	if stream.Error != nil {
+		fmt.Println("error:", stream.Error)
+	}
+	os.Stdout.Write(stream.Buffer())
+	// Output:
+	// {"ID":1,"Name":"Reds","Colors":["Crimson","Red","Ruby","Maroon"]}
+}
+
+func ExampleConfigFastest_Unmarshal() {
+	var jsonBlob = []byte(`[
+		{"Name": "Platypus", "Order": "Monotremata"},
+		{"Name": "Quoll",    "Order": "Dasyuromorphia"}
+	]`)
+	type Animal struct {
+		Name  string
+		Order string
+	}
+	var animals []Animal
+	iter := ConfigFastest.BorrowIterator(jsonBlob)
+	defer ConfigFastest.ReturnIterator(iter)
+	iter.ReadVal(&animals)
+	if iter.Error != nil {
+		fmt.Println("error:", iter.Error)
+	}
+	fmt.Printf("%+v", animals)
+	// Output:
+	// [{Name:Platypus Order:Monotremata} {Name:Quoll Order:Dasyuromorphia}]
+}
+
+func ExampleGet() {
+	val := []byte(`{"ID":1,"Name":"Reds","Colors":["Crimson","Red","Ruby","Maroon"]}`)
+	fmt.Printf(Get(val, "Colors", 0).ToString())
+	// Output:
+	// Crimson
+}

extra/fuzzy_decoder.go

@@ -0,0 +1,256 @@
+package extra
+
+import (
+	"encoding/json"
+	"github.com/json-iterator/go"
+	"math"
+	"reflect"
+	"strings"
+	"unsafe"
+)
+
+const maxUint = ^uint(0)
+const maxInt = int(maxUint >> 1)
+const minInt = -maxInt - 1
+
+// RegisterFuzzyDecoders decode input from PHP with tolerance.
+// It will handle string/number auto conversation, and treat empty [] as empty struct.
+func RegisterFuzzyDecoders() {
+	jsoniter.RegisterExtension(&tolerateEmptyArrayExtension{})
+	jsoniter.RegisterTypeDecoder("string", &fuzzyStringDecoder{})
+	jsoniter.RegisterTypeDecoder("float32", &fuzzyFloat32Decoder{})
+	jsoniter.RegisterTypeDecoder("float64", &fuzzyFloat64Decoder{})
+	jsoniter.RegisterTypeDecoder("int", &fuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+		if isFloat {
+			val := iter.ReadFloat64()
+			if val > float64(maxInt) || val < float64(minInt) {
+				iter.ReportError("fuzzy decode int", "exceed range")
+				return
+			}
+			*((*int)(ptr)) = int(val)
+		} else {
+			*((*int)(ptr)) = iter.ReadInt()
+		}
+	}})
+	jsoniter.RegisterTypeDecoder("uint", &fuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+		if isFloat {
+			val := iter.ReadFloat64()
+			if val > float64(maxUint) || val < 0 {
+				iter.ReportError("fuzzy decode uint", "exceed range")
+				return
+			}
+			*((*uint)(ptr)) = uint(val)
+		} else {
+			*((*uint)(ptr)) = iter.ReadUint()
+		}
+	}})
+	jsoniter.RegisterTypeDecoder("int8", &fuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+		if isFloat {
+			val := iter.ReadFloat64()
+			if val > float64(math.MaxInt8) || val < float64(math.MinInt8) {
+				iter.ReportError("fuzzy decode int8", "exceed range")
+				return
+			}
+			*((*int8)(ptr)) = int8(val)
+		} else {
+			*((*int8)(ptr)) = iter.ReadInt8()
+		}
+	}})
+	jsoniter.RegisterTypeDecoder("uint8", &fuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+		if isFloat {
+			val := iter.ReadFloat64()
+			if val > float64(math.MaxUint8) || val < 0 {
+				iter.ReportError("fuzzy decode uint8", "exceed range")
+				return
+			}
+			*((*uint8)(ptr)) = uint8(val)
+		} else {
+			*((*uint8)(ptr)) = iter.ReadUint8()
+		}
+	}})
+	jsoniter.RegisterTypeDecoder("int16", &fuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+		if isFloat {
+			val := iter.ReadFloat64()
+			if val > float64(math.MaxInt16) || val < float64(math.MinInt16) {
+				iter.ReportError("fuzzy decode int16", "exceed range")
+				return
+			}
+			*((*int16)(ptr)) = int16(val)
+		} else {
+			*((*int16)(ptr)) = iter.ReadInt16()
+		}
+	}})
+	jsoniter.RegisterTypeDecoder("uint16", &fuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+		if isFloat {
+			val := iter.ReadFloat64()
+			if val > float64(math.MaxUint16) || val < 0 {
+				iter.ReportError("fuzzy decode uint16", "exceed range")
+				return
+			}
+			*((*uint16)(ptr)) = uint16(val)
+		} else {
+			*((*uint16)(ptr)) = iter.ReadUint16()
+		}
+	}})
+	jsoniter.RegisterTypeDecoder("int32", &fuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+		if isFloat {
+			val := iter.ReadFloat64()
+			if val > float64(math.MaxInt32) || val < float64(math.MinInt32) {
+				iter.ReportError("fuzzy decode int32", "exceed range")
+				return
+			}
+			*((*int32)(ptr)) = int32(val)
+		} else {
+			*((*int32)(ptr)) = iter.ReadInt32()
+		}
+	}})
+	jsoniter.RegisterTypeDecoder("uint32", &fuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+		if isFloat {
+			val := iter.ReadFloat64()
+			if val > float64(math.MaxUint32) || val < 0 {
+				iter.ReportError("fuzzy decode uint32", "exceed range")
+				return
+			}
+			*((*uint32)(ptr)) = uint32(val)
+		} else {
+			*((*uint32)(ptr)) = iter.ReadUint32()
+		}
+	}})
+	jsoniter.RegisterTypeDecoder("int64", &fuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+		if isFloat {
+			val := iter.ReadFloat64()
+			if val > float64(math.MaxInt64) || val < float64(math.MinInt64) {
+				iter.ReportError("fuzzy decode int64", "exceed range")
+				return
+			}
+			*((*int64)(ptr)) = int64(val)
+		} else {
+			*((*int64)(ptr)) = iter.ReadInt64()
+		}
+	}})
+	jsoniter.RegisterTypeDecoder("uint64", &fuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+		if isFloat {
+			val := iter.ReadFloat64()
+			if val > float64(math.MaxUint64) || val < 0 {
+				iter.ReportError("fuzzy decode uint64", "exceed range")
+				return
+			}
+			*((*uint64)(ptr)) = uint64(val)
+		} else {
+			*((*uint64)(ptr)) = iter.ReadUint64()
+		}
+	}})
+}
+
+type tolerateEmptyArrayExtension struct {
+	jsoniter.DummyExtension
+}
+
+func (extension *tolerateEmptyArrayExtension) DecorateDecoder(typ reflect.Type, decoder jsoniter.ValDecoder) jsoniter.ValDecoder {
+	if typ.Kind() == reflect.Struct || typ.Kind() == reflect.Map {
+		return &tolerateEmptyArrayDecoder{decoder}
+	}
+	return decoder
+}
+
+type tolerateEmptyArrayDecoder struct {
+	valDecoder jsoniter.ValDecoder
+}
+
+func (decoder *tolerateEmptyArrayDecoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+	if iter.WhatIsNext() == jsoniter.ArrayValue {
+		iter.Skip()
+		newIter := iter.Pool().BorrowIterator([]byte("{}"))
+		defer iter.Pool().ReturnIterator(newIter)
+		decoder.valDecoder.Decode(ptr, newIter)
+	} else {
+		decoder.valDecoder.Decode(ptr, iter)
+	}
+}
+
+type fuzzyStringDecoder struct {
+}
+
+func (decoder *fuzzyStringDecoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+	valueType := iter.WhatIsNext()
+	switch valueType {
+	case jsoniter.NumberValue:
+		var number json.Number
+		iter.ReadVal(&number)
+		*((*string)(ptr)) = string(number)
+	case jsoniter.StringValue:
+		*((*string)(ptr)) = iter.ReadString()
+	default:
+		iter.ReportError("fuzzyStringDecoder", "not number or string")
+	}
+}
+
+type fuzzyIntegerDecoder struct {
+	fun func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator)
+}
+
+func (decoder *fuzzyIntegerDecoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+	valueType := iter.WhatIsNext()
+	var str string
+	switch valueType {
+	case jsoniter.NumberValue:
+		var number json.Number
+		iter.ReadVal(&number)
+		str = string(number)
+	case jsoniter.StringValue:
+		str = iter.ReadString()
+	default:
+		iter.ReportError("fuzzyIntegerDecoder", "not number or string")
+	}
+	newIter := iter.Pool().BorrowIterator([]byte(str))
+	defer iter.Pool().ReturnIterator(newIter)
+	isFloat := strings.IndexByte(str, '.') != -1
+	decoder.fun(isFloat, ptr, newIter)
+	if newIter.Error != nil {
+		iter.Error = newIter.Error
+	}
+}
+
+type fuzzyFloat32Decoder struct {
+}
+
+func (decoder *fuzzyFloat32Decoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+	valueType := iter.WhatIsNext()
+	var str string
+	switch valueType {
+	case jsoniter.NumberValue:
+		*((*float32)(ptr)) = iter.ReadFloat32()
+	case jsoniter.StringValue:
+		str = iter.ReadString()
+		newIter := iter.Pool().BorrowIterator([]byte(str))
+		defer iter.Pool().ReturnIterator(newIter)
+		*((*float32)(ptr)) = newIter.ReadFloat32()
+		if newIter.Error != nil {
+			iter.Error = newIter.Error
+		}
+	default:
+		iter.ReportError("fuzzyFloat32Decoder", "not number or string")
+	}
+}
+
+type fuzzyFloat64Decoder struct {
+}
+
+func (decoder *fuzzyFloat64Decoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+	valueType := iter.WhatIsNext()
+	var str string
+	switch valueType {
+	case jsoniter.NumberValue:
+		*((*float64)(ptr)) = iter.ReadFloat64()
+	case jsoniter.StringValue:
+		str = iter.ReadString()
+		newIter := iter.Pool().BorrowIterator([]byte(str))
+		defer iter.Pool().ReturnIterator(newIter)
+		*((*float64)(ptr)) = newIter.ReadFloat64()
+		if newIter.Error != nil {
+			iter.Error = newIter.Error
+		}
+	default:
+		iter.ReportError("fuzzyFloat32Decoder", "not number or string")
+	}
+}

extra/fuzzy_decoder_test.go

@@ -0,0 +1,259 @@
+package extra
+
+import (
+	"testing"
+
+	"github.com/json-iterator/go"
+	"github.com/stretchr/testify/require"
+)
+
+func init() {
+	RegisterFuzzyDecoders()
+}
+
+func Test_any_to_string(t *testing.T) {
+	should := require.New(t)
+	var val string
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal("100", val)
+	should.Nil(jsoniter.UnmarshalFromString("10", &val))
+	should.Equal("10", val)
+	should.Nil(jsoniter.UnmarshalFromString("10.1", &val))
+	should.Equal("10.1", val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal("10.1", val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+}
+func Test_any_to_int64(t *testing.T) {
+	should := require.New(t)
+	var val int64
+
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(int64(100), val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(int64(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(int64(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(int64(10), val)
+
+	should.Nil(jsoniter.UnmarshalFromString(`-10`, &val))
+	should.Equal(int64(-10), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+	// large float to int
+	should.NotNil(jsoniter.UnmarshalFromString(`1234512345123451234512345.0`, &val))
+}
+
+func Test_any_to_int(t *testing.T) {
+	should := require.New(t)
+	var val int
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(100, val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(10, val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(10, val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(10, val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+	// large float to int
+	should.NotNil(jsoniter.UnmarshalFromString(`1234512345123451234512345.0`, &val))
+}
+
+func Test_any_to_int16(t *testing.T) {
+	should := require.New(t)
+	var val int16
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(int16(100), val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(int16(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(int16(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(int16(10), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+	// large float to int
+	should.NotNil(jsoniter.UnmarshalFromString(`1234512345123451234512345.0`, &val))
+}
+
+func Test_any_to_int32(t *testing.T) {
+	should := require.New(t)
+	var val int32
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(int32(100), val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(int32(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(int32(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(int32(10), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+	// large float to int
+	should.NotNil(jsoniter.UnmarshalFromString(`1234512345123451234512345.0`, &val))
+}
+
+func Test_any_to_int8(t *testing.T) {
+	should := require.New(t)
+	var val int8
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(int8(100), val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(int8(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(int8(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(int8(10), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+	// large float to int
+	should.NotNil(jsoniter.UnmarshalFromString(`1234512345123451234512345.0`, &val))
+}
+
+func Test_any_to_uint8(t *testing.T) {
+	should := require.New(t)
+	var val uint8
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(uint8(100), val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(uint8(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(uint8(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(uint8(10), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+	// large float to int
+	should.NotNil(jsoniter.UnmarshalFromString(`1234512345123451234512345.0`, &val))
+}
+
+func Test_any_to_uint64(t *testing.T) {
+	should := require.New(t)
+	var val uint64
+
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(uint64(100), val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(uint64(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(uint64(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(uint64(10), val)
+
+	// TODO fix?
+	should.NotNil(jsoniter.UnmarshalFromString(`-10`, &val))
+	should.Equal(uint64(0), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+	// large float to int
+	should.NotNil(jsoniter.UnmarshalFromString(`1234512345123451234512345.0`, &val))
+}
+func Test_any_to_uint32(t *testing.T) {
+	should := require.New(t)
+	var val uint32
+
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(uint32(100), val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(uint32(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(uint32(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(uint32(10), val)
+
+	// TODO fix?
+	should.NotNil(jsoniter.UnmarshalFromString(`-10`, &val))
+	should.Equal(uint32(0), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+	// large float to int
+	should.NotNil(jsoniter.UnmarshalFromString(`1234512345123451234512345.0`, &val))
+}
+func Test_any_to_uint16(t *testing.T) {
+	should := require.New(t)
+	var val uint16
+
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(uint16(100), val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(uint16(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(uint16(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(uint16(10), val)
+
+	// TODO fix?
+	should.NotNil(jsoniter.UnmarshalFromString(`-10`, &val))
+	should.Equal(uint16(0), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+	// large float to int
+	should.NotNil(jsoniter.UnmarshalFromString(`1234512345123451234512345.0`, &val))
+}
+func Test_any_to_uint(t *testing.T) {
+	should := require.New(t)
+	var val uint
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(uint(100), val)
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(uint(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(uint(10), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(uint(10), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+	// large float to int
+	should.NotNil(jsoniter.UnmarshalFromString(`1234512345123451234512345.0`, &val))
+}
+
+func Test_any_to_float32(t *testing.T) {
+	should := require.New(t)
+	var val float32
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(float32(100), val)
+
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(float32(10.1), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(float32(10.1), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(float32(10), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+}
+
+func Test_any_to_float64(t *testing.T) {
+	should := require.New(t)
+	var val float64
+
+	should.Nil(jsoniter.UnmarshalFromString(`"100"`, &val))
+	should.Equal(float64(100), val)
+
+	should.Nil(jsoniter.UnmarshalFromString(`"10.1"`, &val))
+	should.Equal(float64(10.1), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10.1`, &val))
+	should.Equal(float64(10.1), val)
+	should.Nil(jsoniter.UnmarshalFromString(`10`, &val))
+	should.Equal(float64(10), val)
+	should.NotNil(jsoniter.UnmarshalFromString("{}", &val))
+	should.NotNil(jsoniter.UnmarshalFromString("[]", &val))
+}
+
+func Test_empty_array_as_map(t *testing.T) {
+	should := require.New(t)
+	var val map[string]interface{}
+	should.Nil(jsoniter.UnmarshalFromString(`[]`, &val))
+	should.Equal(map[string]interface{}{}, val)
+}
+
+func Test_empty_array_as_object(t *testing.T) {
+	should := require.New(t)
+	var val struct{}
+	should.Nil(jsoniter.UnmarshalFromString(`[]`, &val))
+	should.Equal(struct{}{}, val)
+}

extra/naming_strategy.go

@@ -0,0 +1,41 @@
+package extra
+
+import (
+	"github.com/json-iterator/go"
+	"unicode"
+)
+
+// SetNamingStrategy rename struct fields uniformly
+func SetNamingStrategy(translate func(string) string) {
+	jsoniter.RegisterExtension(&namingStrategyExtension{jsoniter.DummyExtension{}, translate})
+}
+
+type namingStrategyExtension struct {
+	jsoniter.DummyExtension
+	translate func(string) string
+}
+
+func (extension *namingStrategyExtension) UpdateStructDescriptor(structDescriptor *jsoniter.StructDescriptor) {
+	for _, binding := range structDescriptor.Fields {
+		binding.ToNames = []string{extension.translate(binding.Field.Name)}
+		binding.FromNames = []string{extension.translate(binding.Field.Name)}
+	}
+}
+
+// LowerCaseWithUnderscores one strategy to SetNamingStrategy for. It will change HelloWorld to hello_world.
+func LowerCaseWithUnderscores(name string) string {
+	newName := []rune{}
+	for i, c := range name {
+		if i == 0 {
+			newName = append(newName, unicode.ToLower(c))
+		} else {
+			if unicode.IsUpper(c) {
+				newName = append(newName, '_')
+				newName = append(newName, unicode.ToLower(c))
+			} else {
+				newName = append(newName, c)
+			}
+		}
+	}
+	return string(newName)
+}

extra/naming_strategy_test.go

@@ -0,0 +1,23 @@
+package extra
+
+import (
+	"github.com/json-iterator/go"
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func Test_lower_case_with_underscores(t *testing.T) {
+	should := require.New(t)
+	should.Equal("hello_world", LowerCaseWithUnderscores("helloWorld"))
+	should.Equal("hello_world", LowerCaseWithUnderscores("HelloWorld"))
+	SetNamingStrategy(LowerCaseWithUnderscores)
+	output, err := jsoniter.Marshal(struct {
+		UserName      string
+		FirstLanguage string
+	}{
+		UserName:      "taowen",
+		FirstLanguage: "Chinese",
+	})
+	should.Nil(err)
+	should.Equal(`{"user_name":"taowen","first_language":"Chinese"}`, string(output))
+}

extra/privat_fields.go

@@ -0,0 +1,25 @@
+package extra
+
+import (
+	"github.com/json-iterator/go"
+	"unicode"
+)
+
+// SupportPrivateFields include private fields when encoding/decoding
+func SupportPrivateFields() {
+	jsoniter.RegisterExtension(&privateFieldsExtension{})
+}
+
+type privateFieldsExtension struct {
+	jsoniter.DummyExtension
+}
+
+func (extension *privateFieldsExtension) UpdateStructDescriptor(structDescriptor *jsoniter.StructDescriptor) {
+	for _, binding := range structDescriptor.Fields {
+		isPrivate := unicode.IsLower(rune(binding.Field.Name[0]))
+		if isPrivate {
+			binding.FromNames = []string{binding.Field.Name}
+			binding.ToNames = []string{binding.Field.Name}
+		}
+	}
+}

extra/private_fields_test.go

@@ -0,0 +1,18 @@
+package extra
+
+import (
+	"github.com/json-iterator/go"
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func Test_private_fields(t *testing.T) {
+	type TestObject struct {
+		field1 string
+	}
+	SupportPrivateFields()
+	should := require.New(t)
+	obj := TestObject{}
+	should.Nil(jsoniter.UnmarshalFromString(`{"field1":"Hello"}`, &obj))
+	should.Equal("Hello", obj.field1)
+}

extra/time_as_int64_codec.go

@@ -0,0 +1,34 @@
+package extra
+
+import (
+	"github.com/json-iterator/go"
+	"time"
+	"unsafe"
+)
+
+// RegisterTimeAsInt64Codec encode/decode time since number of unit since epoch. the precision is the unit.
+func RegisterTimeAsInt64Codec(precision time.Duration) {
+	jsoniter.RegisterTypeEncoder("time.Time", &timeAsInt64Codec{precision})
+	jsoniter.RegisterTypeDecoder("time.Time", &timeAsInt64Codec{precision})
+}
+
+type timeAsInt64Codec struct {
+	precision time.Duration
+}
+
+func (codec *timeAsInt64Codec) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+	nanoseconds := iter.ReadInt64() * codec.precision.Nanoseconds()
+	*((*time.Time)(ptr)) = time.Unix(0, nanoseconds)
+}
+
+func (codec *timeAsInt64Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	ts := *((*time.Time)(ptr))
+	return ts.UnixNano() == 0
+}
+func (codec *timeAsInt64Codec) Encode(ptr unsafe.Pointer, stream *jsoniter.Stream) {
+	ts := *((*time.Time)(ptr))
+	stream.WriteInt64(ts.UnixNano() / codec.precision.Nanoseconds())
+}
+func (codec *timeAsInt64Codec) EncodeInterface(val interface{}, stream *jsoniter.Stream) {
+	jsoniter.WriteToStream(val, stream, codec)
+}

extra/time_as_int64_codec_test.go

@@ -0,0 +1,31 @@
+package extra
+
+import (
+	"github.com/json-iterator/go"
+	"github.com/stretchr/testify/require"
+	"testing"
+	"time"
+)
+
+func Test_time_as_int64(t *testing.T) {
+	should := require.New(t)
+	RegisterTimeAsInt64Codec(time.Nanosecond)
+	output, err := jsoniter.Marshal(time.Unix(1497952257, 1002))
+	should.Nil(err)
+	should.Equal("1497952257000001002", string(output))
+	var val time.Time
+	should.Nil(jsoniter.Unmarshal(output, &val))
+	should.Equal(int64(1497952257000001002), val.UnixNano())
+}
+
+func Test_time_as_int64_keep_microsecond(t *testing.T) {
+	t.Skip("conflict")
+	should := require.New(t)
+	RegisterTimeAsInt64Codec(time.Microsecond)
+	output, err := jsoniter.Marshal(time.Unix(1, 1002))
+	should.Nil(err)
+	should.Equal("1000001", string(output))
+	var val time.Time
+	should.Nil(jsoniter.Unmarshal(output, &val))
+	should.Equal(int64(1000001000), val.UnixNano())
+}

feature_adapter.go

@@ -0,0 +1,127 @@
+package jsoniter
+
+import (
+	"bytes"
+	"io"
+)
+
+// RawMessage to make replace json with jsoniter
+type RawMessage []byte
+
+// Unmarshal adapts to json/encoding Unmarshal API
+//
+// Unmarshal parses the JSON-encoded data and stores the result in the value pointed to by v.
+// Refer to https://godoc.org/encoding/json#Unmarshal for more information
+func Unmarshal(data []byte, v interface{}) error {
+	return ConfigDefault.Unmarshal(data, v)
+}
+
+func lastNotSpacePos(data []byte) int {
+	for i := len(data) - 1; i >= 0; i-- {
+		if data[i] != ' ' && data[i] != '\t' && data[i] != '\r' && data[i] != '\n' {
+			return i + 1
+		}
+	}
+	return 0
+}
+
+// UnmarshalFromString convenient method to read from string instead of []byte
+func UnmarshalFromString(str string, v interface{}) error {
+	return ConfigDefault.UnmarshalFromString(str, v)
+}
+
+// Get quick method to get value from deeply nested JSON structure
+func Get(data []byte, path ...interface{}) Any {
+	return ConfigDefault.Get(data, path...)
+}
+
+// Marshal adapts to json/encoding Marshal API
+//
+// Marshal returns the JSON encoding of v, adapts to json/encoding Marshal API
+// Refer to https://godoc.org/encoding/json#Marshal for more information
+func Marshal(v interface{}) ([]byte, error) {
+	return ConfigDefault.Marshal(v)
+}
+
+// MarshalIndent same as json.MarshalIndent. Prefix is not supported.
+func MarshalIndent(v interface{}, prefix, indent string) ([]byte, error) {
+	return ConfigDefault.MarshalIndent(v, prefix, indent)
+}
+
+// MarshalToString convenient method to write as string instead of []byte
+func MarshalToString(v interface{}) (string, error) {
+	return ConfigDefault.MarshalToString(v)
+}
+
+// NewDecoder adapts to json/stream NewDecoder API.
+//
+// NewDecoder returns a new decoder that reads from r.
+//
+// Instead of a json/encoding Decoder, an Decoder is returned
+// Refer to https://godoc.org/encoding/json#NewDecoder for more information
+func NewDecoder(reader io.Reader) *Decoder {
+	return ConfigDefault.NewDecoder(reader)
+}
+
+// Decoder reads and decodes JSON values from an input stream.
+// Decoder provides identical APIs with json/stream Decoder (Token() and UseNumber() are in progress)
+type Decoder struct {
+	iter *Iterator
+}
+
+// Decode decode JSON into interface{}
+func (adapter *Decoder) Decode(obj interface{}) error {
+	adapter.iter.ReadVal(obj)
+	err := adapter.iter.Error
+	if err == io.EOF {
+		return nil
+	}
+	return adapter.iter.Error
+}
+
+// More is there more?
+func (adapter *Decoder) More() bool {
+	return adapter.iter.head != adapter.iter.tail
+}
+
+// Buffered remaining buffer
+func (adapter *Decoder) Buffered() io.Reader {
+	remaining := adapter.iter.buf[adapter.iter.head:adapter.iter.tail]
+	return bytes.NewReader(remaining)
+}
+
+// UseNumber for number JSON element, use float64 or json.NumberValue (alias of string)
+func (adapter *Decoder) UseNumber() {
+	origCfg := adapter.iter.cfg.configBeforeFrozen
+	origCfg.UseNumber = true
+	adapter.iter.cfg = origCfg.Froze().(*frozenConfig)
+}
+
+// NewEncoder same as json.NewEncoder
+func NewEncoder(writer io.Writer) *Encoder {
+	return ConfigDefault.NewEncoder(writer)
+}
+
+// Encoder same as json.Encoder
+type Encoder struct {
+	stream *Stream
+}
+
+// Encode encode interface{} as JSON to io.Writer
+func (adapter *Encoder) Encode(val interface{}) error {
+	adapter.stream.WriteVal(val)
+	adapter.stream.Flush()
+	return adapter.stream.Error
+}
+
+// SetIndent set the indention. Prefix is not supported
+func (adapter *Encoder) SetIndent(prefix, indent string) {
+	adapter.stream.cfg.indentionStep = len(indent)
+}
+
+// SetEscapeHTML escape html by default, set to false to disable
+func (adapter *Encoder) SetEscapeHTML(escapeHTML bool) {
+	config := adapter.stream.cfg.configBeforeFrozen
+	config.EscapeHTML = escapeHTML
+	adapter.stream.cfg = config.Froze().(*frozenConfig)
+}

feature_any.go

@@ -0,0 +1,242 @@
+package jsoniter
+
+import (
+	"fmt"
+	"io"
+	"reflect"
+)
+
+// Any generic object representation.
+// The lazy json implementation holds []byte and parse lazily.
+type Any interface {
+	LastError() error
+	ValueType() ValueType
+	MustBeValid() Any
+	ToBool() bool
+	ToInt() int
+	ToInt32() int32
+	ToInt64() int64
+	ToUint() uint
+	ToUint32() uint32
+	ToUint64() uint64
+	ToFloat32() float32
+	ToFloat64() float64
+	ToString() string
+	ToVal(val interface{})
+	Get(path ...interface{}) Any
+	// TODO: add Set
+	Size() int
+	Keys() []string
+	GetInterface() interface{}
+	WriteTo(stream *Stream)
+}
+
+type baseAny struct{}
+
+func (any *baseAny) Get(path ...interface{}) Any {
+	return &invalidAny{baseAny{}, fmt.Errorf("Get %v from simple value", path)}
+}
+
+func (any *baseAny) Size() int {
+	return 0
+}
+
+func (any *baseAny) Keys() []string {
+	return []string{}
+}
+
+func (any *baseAny) ToVal(obj interface{}) {
+	panic("not implemented")
+}
+
+// WrapInt32 turn int32 into Any interface
+func WrapInt32(val int32) Any {
+	return &int32Any{baseAny{}, val}
+}
+
+// WrapInt64 turn int64 into Any interface
+func WrapInt64(val int64) Any {
+	return &int64Any{baseAny{}, val}
+}
+
+// WrapUint32 turn uint32 into Any interface
+func WrapUint32(val uint32) Any {
+	return &uint32Any{baseAny{}, val}
+}
+
+// WrapUint64 turn uint64 into Any interface
+func WrapUint64(val uint64) Any {
+	return &uint64Any{baseAny{}, val}
+}
+
+// WrapFloat64 turn float64 into Any interface
+func WrapFloat64(val float64) Any {
+	return &floatAny{baseAny{}, val}
+}
+
+// WrapString turn string into Any interface
+func WrapString(val string) Any {
+	return &stringAny{baseAny{}, val}
+}
+
+// Wrap turn a go object into Any interface
+func Wrap(val interface{}) Any {
+	if val == nil {
+		return &nilAny{}
+	}
+	asAny, isAny := val.(Any)
+	if isAny {
+		return asAny
+	}
+	typ := reflect.TypeOf(val)
+	switch typ.Kind() {
+	case reflect.Slice:
+		return wrapArray(val)
+	case reflect.Struct:
+		return wrapStruct(val)
+	case reflect.Map:
+		return wrapMap(val)
+	case reflect.String:
+		return WrapString(val.(string))
+	case reflect.Int:
+		return WrapInt64(int64(val.(int)))
+	case reflect.Int8:
+		return WrapInt32(int32(val.(int8)))
+	case reflect.Int16:
+		return WrapInt32(int32(val.(int16)))
+	case reflect.Int32:
+		return WrapInt32(val.(int32))
+	case reflect.Int64:
+		return WrapInt64(val.(int64))
+	case reflect.Uint:
+		return WrapUint64(uint64(val.(uint)))
+	case reflect.Uint8:
+		return WrapUint32(uint32(val.(uint8)))
+	case reflect.Uint16:
+		return WrapUint32(uint32(val.(uint16)))
+	case reflect.Uint32:
+		return WrapUint32(uint32(val.(uint32)))
+	case reflect.Uint64:
+		return WrapUint64(val.(uint64))
+	case reflect.Float32:
+		return WrapFloat64(float64(val.(float32)))
+	case reflect.Float64:
+		return WrapFloat64(val.(float64))
+	case reflect.Bool:
+		if val.(bool) == true {
+			return &trueAny{}
+		}
+		return &falseAny{}
+	}
+	return &invalidAny{baseAny{}, fmt.Errorf("unsupported type: %v", typ)}
+}
+
+// ReadAny read next JSON element as an Any object. It is a better json.RawMessage.
+func (iter *Iterator) ReadAny() Any {
+	return iter.readAny()
+}
+
+func (iter *Iterator) readAny() Any {
+	c := iter.nextToken()
+	switch c {
+	case '"':
+		iter.unreadByte()
+		return &stringAny{baseAny{}, iter.ReadString()}
+	case 'n':
+		iter.skipThreeBytes('u', 'l', 'l') // null
+		return &nilAny{}
+	case 't':
+		iter.skipThreeBytes('r', 'u', 'e') // true
+		return &trueAny{}
+	case 'f':
+		iter.skipFourBytes('a', 'l', 's', 'e') // false
+		return &falseAny{}
+	case '{':
+		return iter.readObjectAny()
+	case '[':
+		return iter.readArrayAny()
+	case '-':
+		return iter.readNumberAny(false)
+	default:
+		return iter.readNumberAny(true)
+	}
+}
+
+func (iter *Iterator) readNumberAny(positive bool) Any {
+	iter.startCapture(iter.head - 1)
+	iter.skipNumber()
+	lazyBuf := iter.stopCapture()
+	return &numberLazyAny{baseAny{}, iter.cfg, lazyBuf, nil}
+}
+
+func (iter *Iterator) readObjectAny() Any {
+	iter.startCapture(iter.head - 1)
+	iter.skipObject()
+	lazyBuf := iter.stopCapture()
+	return &objectLazyAny{baseAny{}, iter.cfg, lazyBuf, nil}
+}
+
+func (iter *Iterator) readArrayAny() Any {
+	iter.startCapture(iter.head - 1)
+	iter.skipArray()
+	lazyBuf := iter.stopCapture()
+	return &arrayLazyAny{baseAny{}, iter.cfg, lazyBuf, nil}
+}
+
+func locateObjectField(iter *Iterator, target string) []byte {
+	var found []byte
+	iter.ReadObjectCB(func(iter *Iterator, field string) bool {
+		if field == target {
+			found = iter.SkipAndReturnBytes()
+			return false
+		}
+		iter.Skip()
+		return true
+	})
+	return found
+}
+
+func locateArrayElement(iter *Iterator, target int) []byte {
+	var found []byte
+	n := 0
+	iter.ReadArrayCB(func(iter *Iterator) bool {
+		if n == target {
+			found = iter.SkipAndReturnBytes()
+			return false
+		}
+		iter.Skip()
+		n++
+		return true
+	})
+	return found
+}
+
+func locatePath(iter *Iterator, path []interface{}) Any {
+	for i, pathKeyObj := range path {
+		switch pathKey := pathKeyObj.(type) {
+		case string:
+			valueBytes := locateObjectField(iter, pathKey)
+			if valueBytes == nil {
+				return newInvalidAny(path[i:])
+			}
+			iter.ResetBytes(valueBytes)
+		case int:
+			valueBytes := locateArrayElement(iter, pathKey)
+			if valueBytes == nil {
+				return newInvalidAny(path[i:])
+			}
+			iter.ResetBytes(valueBytes)
+		case int32:
+			if '*' == pathKey {
+				return iter.readAny().Get(path[i:]...)
+			}
+			return newInvalidAny(path[i:])
+		default:
+			return newInvalidAny(path[i:])
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		return &invalidAny{baseAny{}, iter.Error}
+	}
+	return iter.readAny()
+}

feature_any_array.go

@@ -0,0 +1,278 @@
+package jsoniter
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+type arrayLazyAny struct {
+	baseAny
+	cfg *frozenConfig
+	buf []byte
+	err error
+}
+
+func (any *arrayLazyAny) ValueType() ValueType {
+	return ArrayValue
+}
+
+func (any *arrayLazyAny) MustBeValid() Any {
+	return any
+}
+
+func (any *arrayLazyAny) LastError() error {
+	return any.err
+}
+
+func (any *arrayLazyAny) ToBool() bool {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	return iter.ReadArray()
+}
+
+func (any *arrayLazyAny) ToInt() int {
+	if any.ToBool() {
+		return 1
+	}
+	return 0
+}
+
+func (any *arrayLazyAny) ToInt32() int32 {
+	if any.ToBool() {
+		return 1
+	}
+	return 0
+}
+
+func (any *arrayLazyAny) ToInt64() int64 {
+	if any.ToBool() {
+		return 1
+	}
+	return 0
+}
+
+func (any *arrayLazyAny) ToUint() uint {
+	if any.ToBool() {
+		return 1
+	}
+	return 0
+}
+
+func (any *arrayLazyAny) ToUint32() uint32 {
+	if any.ToBool() {
+		return 1
+	}
+	return 0
+}
+
+func (any *arrayLazyAny) ToUint64() uint64 {
+	if any.ToBool() {
+		return 1
+	}
+	return 0
+}
+
+func (any *arrayLazyAny) ToFloat32() float32 {
+	if any.ToBool() {
+		return 1
+	}
+	return 0
+}
+
+func (any *arrayLazyAny) ToFloat64() float64 {
+	if any.ToBool() {
+		return 1
+	}
+	return 0
+}
+
+func (any *arrayLazyAny) ToString() string {
+	return *(*string)(unsafe.Pointer(&any.buf))
+}
+
+func (any *arrayLazyAny) ToVal(val interface{}) {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	iter.ReadVal(val)
+}
+
+func (any *arrayLazyAny) Get(path ...interface{}) Any {
+	if len(path) == 0 {
+		return any
+	}
+	switch firstPath := path[0].(type) {
+	case int:
+		iter := any.cfg.BorrowIterator(any.buf)
+		defer any.cfg.ReturnIterator(iter)
+		valueBytes := locateArrayElement(iter, firstPath)
+		if valueBytes == nil {
+			return newInvalidAny(path)
+		}
+		iter.ResetBytes(valueBytes)
+		return locatePath(iter, path[1:])
+	case int32:
+		if '*' == firstPath {
+			iter := any.cfg.BorrowIterator(any.buf)
+			defer any.cfg.ReturnIterator(iter)
+			arr := make([]Any, 0)
+			iter.ReadArrayCB(func(iter *Iterator) bool {
+				found := iter.readAny().Get(path[1:]...)
+				if found.ValueType() != InvalidValue {
+					arr = append(arr, found)
+				}
+				return true
+			})
+			return wrapArray(arr)
+		}
+		return newInvalidAny(path)
+	default:
+		return newInvalidAny(path)
+	}
+}
+
+func (any *arrayLazyAny) Size() int {
+	size := 0
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	iter.ReadArrayCB(func(iter *Iterator) bool {
+		size++
+		iter.Skip()
+		return true
+	})
+	return size
+}
+
+func (any *arrayLazyAny) WriteTo(stream *Stream) {
+	stream.Write(any.buf)
+}
+
+func (any *arrayLazyAny) GetInterface() interface{} {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	return iter.Read()
+}
+
+type arrayAny struct {
+	baseAny
+	val reflect.Value
+}
+
+func wrapArray(val interface{}) *arrayAny {
+	return &arrayAny{baseAny{}, reflect.ValueOf(val)}
+}
+
+func (any *arrayAny) ValueType() ValueType {
+	return ArrayValue
+}
+
+func (any *arrayAny) MustBeValid() Any {
+	return any
+}
+
+func (any *arrayAny) LastError() error {
+	return nil
+}
+
+func (any *arrayAny) ToBool() bool {
+	return any.val.Len() != 0
+}
+
+func (any *arrayAny) ToInt() int {
+	if any.val.Len() == 0 {
+		return 0
+	}
+	return 1
+}
+
+func (any *arrayAny) ToInt32() int32 {
+	if any.val.Len() == 0 {
+		return 0
+	}
+	return 1
+}
+
+func (any *arrayAny) ToInt64() int64 {
+	if any.val.Len() == 0 {
+		return 0
+	}
+	return 1
+}
+
+func (any *arrayAny) ToUint() uint {
+	if any.val.Len() == 0 {
+		return 0
+	}
+	return 1
+}
+
+func (any *arrayAny) ToUint32() uint32 {
+	if any.val.Len() == 0 {
+		return 0
+	}
+	return 1
+}
+
+func (any *arrayAny) ToUint64() uint64 {
+	if any.val.Len() == 0 {
+		return 0
+	}
+	return 1
+}
+
+func (any *arrayAny) ToFloat32() float32 {
+	if any.val.Len() == 0 {
+		return 0
+	}
+	return 1
+}
+
+func (any *arrayAny) ToFloat64() float64 {
+	if any.val.Len() == 0 {
+		return 0
+	}
+	return 1
+}
+
+func (any *arrayAny) ToString() string {
+	str, _ := MarshalToString(any.val.Interface())
+	return str
+}
+
+func (any *arrayAny) Get(path ...interface{}) Any {
+	if len(path) == 0 {
+		return any
+	}
+	switch firstPath := path[0].(type) {
+	case int:
+		if firstPath < 0 || firstPath >= any.val.Len() {
+			return newInvalidAny(path)
+		}
+		return Wrap(any.val.Index(firstPath).Interface())
+	case int32:
+		if '*' == firstPath {
+			mappedAll := make([]Any, 0)
+			for i := 0; i < any.val.Len(); i++ {
+				mapped := Wrap(any.val.Index(i).Interface()).Get(path[1:]...)
+				if mapped.ValueType() != InvalidValue {
+					mappedAll = append(mappedAll, mapped)
+				}
+			}
+			return wrapArray(mappedAll)
+		}
+		return newInvalidAny(path)
+	default:
+		return newInvalidAny(path)
+	}
+}
+
+func (any *arrayAny) Size() int {
+	return any.val.Len()
+}
+
+func (any *arrayAny) WriteTo(stream *Stream) {
+	stream.WriteVal(any.val)
+}
+
+func (any *arrayAny) GetInterface() interface{} {
+	return any.val.Interface()
+}

feature_any_bool.go

@@ -0,0 +1,137 @@
+package jsoniter
+
+type trueAny struct {
+	baseAny
+}
+
+func (any *trueAny) LastError() error {
+	return nil
+}
+
+func (any *trueAny) ToBool() bool {
+	return true
+}
+
+func (any *trueAny) ToInt() int {
+	return 1
+}
+
+func (any *trueAny) ToInt32() int32 {
+	return 1
+}
+
+func (any *trueAny) ToInt64() int64 {
+	return 1
+}
+
+func (any *trueAny) ToUint() uint {
+	return 1
+}
+
+func (any *trueAny) ToUint32() uint32 {
+	return 1
+}
+
+func (any *trueAny) ToUint64() uint64 {
+	return 1
+}
+
+func (any *trueAny) ToFloat32() float32 {
+	return 1
+}
+
+func (any *trueAny) ToFloat64() float64 {
+	return 1
+}
+
+func (any *trueAny) ToString() string {
+	return "true"
+}
+
+func (any *trueAny) WriteTo(stream *Stream) {
+	stream.WriteTrue()
+}
+
+func (any *trueAny) Parse() *Iterator {
+	return nil
+}
+
+func (any *trueAny) GetInterface() interface{} {
+	return true
+}
+
+func (any *trueAny) ValueType() ValueType {
+	return BoolValue
+}
+
+func (any *trueAny) MustBeValid() Any {
+	return any
+}
+
+type falseAny struct {
+	baseAny
+}
+
+func (any *falseAny) LastError() error {
+	return nil
+}
+
+func (any *falseAny) ToBool() bool {
+	return false
+}
+
+func (any *falseAny) ToInt() int {
+	return 0
+}
+
+func (any *falseAny) ToInt32() int32 {
+	return 0
+}
+
+func (any *falseAny) ToInt64() int64 {
+	return 0
+}
+
+func (any *falseAny) ToUint() uint {
+	return 0
+}
+
+func (any *falseAny) ToUint32() uint32 {
+	return 0
+}
+
+func (any *falseAny) ToUint64() uint64 {
+	return 0
+}
+
+func (any *falseAny) ToFloat32() float32 {
+	return 0
+}
+
+func (any *falseAny) ToFloat64() float64 {
+	return 0
+}
+
+func (any *falseAny) ToString() string {
+	return "false"
+}
+
+func (any *falseAny) WriteTo(stream *Stream) {
+	stream.WriteFalse()
+}
+
+func (any *falseAny) Parse() *Iterator {
+	return nil
+}
+
+func (any *falseAny) GetInterface() interface{} {
+	return false
+}
+
+func (any *falseAny) ValueType() ValueType {
+	return BoolValue
+}
+
+func (any *falseAny) MustBeValid() Any {
+	return any
+}

feature_any_float.go

@@ -0,0 +1,83 @@
+package jsoniter
+
+import (
+	"strconv"
+)
+
+type floatAny struct {
+	baseAny
+	val float64
+}
+
+func (any *floatAny) Parse() *Iterator {
+	return nil
+}
+
+func (any *floatAny) ValueType() ValueType {
+	return NumberValue
+}
+
+func (any *floatAny) MustBeValid() Any {
+	return any
+}
+
+func (any *floatAny) LastError() error {
+	return nil
+}
+
+func (any *floatAny) ToBool() bool {
+	return any.ToFloat64() != 0
+}
+
+func (any *floatAny) ToInt() int {
+	return int(any.val)
+}
+
+func (any *floatAny) ToInt32() int32 {
+	return int32(any.val)
+}
+
+func (any *floatAny) ToInt64() int64 {
+	return int64(any.val)
+}
+
+func (any *floatAny) ToUint() uint {
+	if any.val > 0 {
+		return uint(any.val)
+	}
+	return 0
+}
+
+func (any *floatAny) ToUint32() uint32 {
+	if any.val > 0 {
+		return uint32(any.val)
+	}
+	return 0
+}
+
+func (any *floatAny) ToUint64() uint64 {
+	if any.val > 0 {
+		return uint64(any.val)
+	}
+	return 0
+}
+
+func (any *floatAny) ToFloat32() float32 {
+	return float32(any.val)
+}
+
+func (any *floatAny) ToFloat64() float64 {
+	return any.val
+}
+
+func (any *floatAny) ToString() string {
+	return strconv.FormatFloat(any.val, 'E', -1, 64)
+}
+
+func (any *floatAny) WriteTo(stream *Stream) {
+	stream.WriteFloat64(any.val)
+}
+
+func (any *floatAny) GetInterface() interface{} {
+	return any.val
+}

feature_any_int32.go

@@ -0,0 +1,74 @@
+package jsoniter
+
+import (
+	"strconv"
+)
+
+type int32Any struct {
+	baseAny
+	val int32
+}
+
+func (any *int32Any) LastError() error {
+	return nil
+}
+
+func (any *int32Any) ValueType() ValueType {
+	return NumberValue
+}
+
+func (any *int32Any) MustBeValid() Any {
+	return any
+}
+
+func (any *int32Any) ToBool() bool {
+	return any.val != 0
+}
+
+func (any *int32Any) ToInt() int {
+	return int(any.val)
+}
+
+func (any *int32Any) ToInt32() int32 {
+	return any.val
+}
+
+func (any *int32Any) ToInt64() int64 {
+	return int64(any.val)
+}
+
+func (any *int32Any) ToUint() uint {
+	return uint(any.val)
+}
+
+func (any *int32Any) ToUint32() uint32 {
+	return uint32(any.val)
+}
+
+func (any *int32Any) ToUint64() uint64 {
+	return uint64(any.val)
+}
+
+func (any *int32Any) ToFloat32() float32 {
+	return float32(any.val)
+}
+
+func (any *int32Any) ToFloat64() float64 {
+	return float64(any.val)
+}
+
+func (any *int32Any) ToString() string {
+	return strconv.FormatInt(int64(any.val), 10)
+}
+
+func (any *int32Any) WriteTo(stream *Stream) {
+	stream.WriteInt32(any.val)
+}
+
+func (any *int32Any) Parse() *Iterator {
+	return nil
+}
+
+func (any *int32Any) GetInterface() interface{} {
+	return any.val
+}

feature_any_int64.go

@@ -0,0 +1,74 @@
+package jsoniter
+
+import (
+	"strconv"
+)
+
+type int64Any struct {
+	baseAny
+	val int64
+}
+
+func (any *int64Any) LastError() error {
+	return nil
+}
+
+func (any *int64Any) ValueType() ValueType {
+	return NumberValue
+}
+
+func (any *int64Any) MustBeValid() Any {
+	return any
+}
+
+func (any *int64Any) ToBool() bool {
+	return any.val != 0
+}
+
+func (any *int64Any) ToInt() int {
+	return int(any.val)
+}
+
+func (any *int64Any) ToInt32() int32 {
+	return int32(any.val)
+}
+
+func (any *int64Any) ToInt64() int64 {
+	return any.val
+}
+
+func (any *int64Any) ToUint() uint {
+	return uint(any.val)
+}
+
+func (any *int64Any) ToUint32() uint32 {
+	return uint32(any.val)
+}
+
+func (any *int64Any) ToUint64() uint64 {
+	return uint64(any.val)
+}
+
+func (any *int64Any) ToFloat32() float32 {
+	return float32(any.val)
+}
+
+func (any *int64Any) ToFloat64() float64 {
+	return float64(any.val)
+}
+
+func (any *int64Any) ToString() string {
+	return strconv.FormatInt(any.val, 10)
+}
+
+func (any *int64Any) WriteTo(stream *Stream) {
+	stream.WriteInt64(any.val)
+}
+
+func (any *int64Any) Parse() *Iterator {
+	return nil
+}
+
+func (any *int64Any) GetInterface() interface{} {
+	return any.val
+}

feature_any_invalid.go

@@ -0,0 +1,82 @@
+package jsoniter
+
+import "fmt"
+
+type invalidAny struct {
+	baseAny
+	err error
+}
+
+func newInvalidAny(path []interface{}) *invalidAny {
+	return &invalidAny{baseAny{}, fmt.Errorf("%v not found", path)}
+}
+
+func (any *invalidAny) LastError() error {
+	return any.err
+}
+
+func (any *invalidAny) ValueType() ValueType {
+	return InvalidValue
+}
+
+func (any *invalidAny) MustBeValid() Any {
+	panic(any.err)
+}
+
+func (any *invalidAny) ToBool() bool {
+	return false
+}
+
+func (any *invalidAny) ToInt() int {
+	return 0
+}
+
+func (any *invalidAny) ToInt32() int32 {
+	return 0
+}
+
+func (any *invalidAny) ToInt64() int64 {
+	return 0
+}
+
+func (any *invalidAny) ToUint() uint {
+	return 0
+}
+
+func (any *invalidAny) ToUint32() uint32 {
+	return 0
+}
+
+func (any *invalidAny) ToUint64() uint64 {
+	return 0
+}
+
+func (any *invalidAny) ToFloat32() float32 {
+	return 0
+}
+
+func (any *invalidAny) ToFloat64() float64 {
+	return 0
+}
+
+func (any *invalidAny) ToString() string {
+	return ""
+}
+
+func (any *invalidAny) WriteTo(stream *Stream) {
+}
+
+func (any *invalidAny) Get(path ...interface{}) Any {
+	if any.err == nil {
+		return &invalidAny{baseAny{}, fmt.Errorf("get %v from invalid", path)}
+	}
+	return &invalidAny{baseAny{}, fmt.Errorf("%v, get %v from invalid", any.err, path)}
+}
+
+func (any *invalidAny) Parse() *Iterator {
+	return nil
+}
+
+func (any *invalidAny) GetInterface() interface{} {
+	return nil
+}

feature_any_nil.go

@@ -0,0 +1,69 @@
+package jsoniter
+
+type nilAny struct {
+	baseAny
+}
+
+func (any *nilAny) LastError() error {
+	return nil
+}
+
+func (any *nilAny) ValueType() ValueType {
+	return NilValue
+}
+
+func (any *nilAny) MustBeValid() Any {
+	return any
+}
+
+func (any *nilAny) ToBool() bool {
+	return false
+}
+
+func (any *nilAny) ToInt() int {
+	return 0
+}
+
+func (any *nilAny) ToInt32() int32 {
+	return 0
+}
+
+func (any *nilAny) ToInt64() int64 {
+	return 0
+}
+
+func (any *nilAny) ToUint() uint {
+	return 0
+}
+
+func (any *nilAny) ToUint32() uint32 {
+	return 0
+}
+
+func (any *nilAny) ToUint64() uint64 {
+	return 0
+}
+
+func (any *nilAny) ToFloat32() float32 {
+	return 0
+}
+
+func (any *nilAny) ToFloat64() float64 {
+	return 0
+}
+
+func (any *nilAny) ToString() string {
+	return ""
+}
+
+func (any *nilAny) WriteTo(stream *Stream) {
+	stream.WriteNil()
+}
+
+func (any *nilAny) Parse() *Iterator {
+	return nil
+}
+
+func (any *nilAny) GetInterface() interface{} {
+	return nil
+}

feature_any_number.go

@@ -0,0 +1,104 @@
+package jsoniter
+
+import "unsafe"
+
+type numberLazyAny struct {
+	baseAny
+	cfg *frozenConfig
+	buf []byte
+	err error
+}
+
+func (any *numberLazyAny) ValueType() ValueType {
+	return NumberValue
+}
+
+func (any *numberLazyAny) MustBeValid() Any {
+	return any
+}
+
+func (any *numberLazyAny) LastError() error {
+	return any.err
+}
+
+func (any *numberLazyAny) ToBool() bool {
+	return any.ToFloat64() != 0
+}
+
+func (any *numberLazyAny) ToInt() int {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	val := iter.ReadInt()
+	any.err = iter.Error
+	return val
+}
+
+func (any *numberLazyAny) ToInt32() int32 {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	val := iter.ReadInt32()
+	any.err = iter.Error
+	return val
+}
+
+func (any *numberLazyAny) ToInt64() int64 {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	val := iter.ReadInt64()
+	any.err = iter.Error
+	return val
+}
+
+func (any *numberLazyAny) ToUint() uint {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	val := iter.ReadUint()
+	any.err = iter.Error
+	return val
+}
+
+func (any *numberLazyAny) ToUint32() uint32 {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	val := iter.ReadUint32()
+	any.err = iter.Error
+	return val
+}
+
+func (any *numberLazyAny) ToUint64() uint64 {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	val := iter.ReadUint64()
+	any.err = iter.Error
+	return val
+}
+
+func (any *numberLazyAny) ToFloat32() float32 {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	val := iter.ReadFloat32()
+	any.err = iter.Error
+	return val
+}
+
+func (any *numberLazyAny) ToFloat64() float64 {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	val := iter.ReadFloat64()
+	any.err = iter.Error
+	return val
+}
+
+func (any *numberLazyAny) ToString() string {
+	return *(*string)(unsafe.Pointer(&any.buf))
+}
+
+func (any *numberLazyAny) WriteTo(stream *Stream) {
+	stream.Write(any.buf)
+}
+
+func (any *numberLazyAny) GetInterface() interface{} {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	return iter.Read()
+}

feature_any_object.go

@@ -0,0 +1,374 @@
+package jsoniter
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+type objectLazyAny struct {
+	baseAny
+	cfg *frozenConfig
+	buf []byte
+	err error
+}
+
+func (any *objectLazyAny) ValueType() ValueType {
+	return ObjectValue
+}
+
+func (any *objectLazyAny) MustBeValid() Any {
+	return any
+}
+
+func (any *objectLazyAny) LastError() error {
+	return any.err
+}
+
+func (any *objectLazyAny) ToBool() bool {
+	return true
+}
+
+func (any *objectLazyAny) ToInt() int {
+	return 0
+}
+
+func (any *objectLazyAny) ToInt32() int32 {
+	return 0
+}
+
+func (any *objectLazyAny) ToInt64() int64 {
+	return 0
+}
+
+func (any *objectLazyAny) ToUint() uint {
+	return 0
+}
+
+func (any *objectLazyAny) ToUint32() uint32 {
+	return 0
+}
+
+func (any *objectLazyAny) ToUint64() uint64 {
+	return 0
+}
+
+func (any *objectLazyAny) ToFloat32() float32 {
+	return 0
+}
+
+func (any *objectLazyAny) ToFloat64() float64 {
+	return 0
+}
+
+func (any *objectLazyAny) ToString() string {
+	return *(*string)(unsafe.Pointer(&any.buf))
+}
+
+func (any *objectLazyAny) ToVal(obj interface{}) {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	iter.ReadVal(obj)
+}
+
+func (any *objectLazyAny) Get(path ...interface{}) Any {
+	if len(path) == 0 {
+		return any
+	}
+	switch firstPath := path[0].(type) {
+	case string:
+		iter := any.cfg.BorrowIterator(any.buf)
+		defer any.cfg.ReturnIterator(iter)
+		valueBytes := locateObjectField(iter, firstPath)
+		if valueBytes == nil {
+			return newInvalidAny(path)
+		}
+		iter.ResetBytes(valueBytes)
+		return locatePath(iter, path[1:])
+	case int32:
+		if '*' == firstPath {
+			mappedAll := map[string]Any{}
+			iter := any.cfg.BorrowIterator(any.buf)
+			defer any.cfg.ReturnIterator(iter)
+			iter.ReadMapCB(func(iter *Iterator, field string) bool {
+				mapped := locatePath(iter, path[1:])
+				if mapped.ValueType() != InvalidValue {
+					mappedAll[field] = mapped
+				}
+				return true
+			})
+			return wrapMap(mappedAll)
+		}
+		return newInvalidAny(path)
+	default:
+		return newInvalidAny(path)
+	}
+}
+
+func (any *objectLazyAny) Keys() []string {
+	keys := []string{}
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	iter.ReadMapCB(func(iter *Iterator, field string) bool {
+		iter.Skip()
+		keys = append(keys, field)
+		return true
+	})
+	return keys
+}
+
+func (any *objectLazyAny) Size() int {
+	size := 0
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	iter.ReadObjectCB(func(iter *Iterator, field string) bool {
+		iter.Skip()
+		size++
+		return true
+	})
+	return size
+}
+
+func (any *objectLazyAny) WriteTo(stream *Stream) {
+	stream.Write(any.buf)
+}
+
+func (any *objectLazyAny) GetInterface() interface{} {
+	iter := any.cfg.BorrowIterator(any.buf)
+	defer any.cfg.ReturnIterator(iter)
+	return iter.Read()
+}
+
+type objectAny struct {
+	baseAny
+	err error
+	val reflect.Value
+}
+
+func wrapStruct(val interface{}) *objectAny {
+	return &objectAny{baseAny{}, nil, reflect.ValueOf(val)}
+}
+
+func (any *objectAny) ValueType() ValueType {
+	return ObjectValue
+}
+
+func (any *objectAny) MustBeValid() Any {
+	return any
+}
+
+func (any *objectAny) Parse() *Iterator {
+	return nil
+}
+
+func (any *objectAny) LastError() error {
+	return any.err
+}
+
+func (any *objectAny) ToBool() bool {
+	return any.val.NumField() != 0
+}
+
+func (any *objectAny) ToInt() int {
+	return 0
+}
+
+func (any *objectAny) ToInt32() int32 {
+	return 0
+}
+
+func (any *objectAny) ToInt64() int64 {
+	return 0
+}
+
+func (any *objectAny) ToUint() uint {
+	return 0
+}
+
+func (any *objectAny) ToUint32() uint32 {
+	return 0
+}
+
+func (any *objectAny) ToUint64() uint64 {
+	return 0
+}
+
+func (any *objectAny) ToFloat32() float32 {
+	return 0
+}
+
+func (any *objectAny) ToFloat64() float64 {
+	return 0
+}
+
+func (any *objectAny) ToString() string {
+	str, err := MarshalToString(any.val.Interface())
+	any.err = err
+	return str
+}
+
+func (any *objectAny) Get(path ...interface{}) Any {
+	if len(path) == 0 {
+		return any
+	}
+	switch firstPath := path[0].(type) {
+	case string:
+		field := any.val.FieldByName(firstPath)
+		if !field.IsValid() {
+			return newInvalidAny(path)
+		}
+		return Wrap(field.Interface())
+	case int32:
+		if '*' == firstPath {
+			mappedAll := map[string]Any{}
+			for i := 0; i < any.val.NumField(); i++ {
+				field := any.val.Field(i)
+				if field.CanInterface() {
+					mapped := Wrap(field.Interface()).Get(path[1:]...)
+					if mapped.ValueType() != InvalidValue {
+						mappedAll[any.val.Type().Field(i).Name] = mapped
+					}
+				}
+			}
+			return wrapMap(mappedAll)
+		}
+		return newInvalidAny(path)
+	default:
+		return newInvalidAny(path)
+	}
+}
+
+func (any *objectAny) Keys() []string {
+	keys := make([]string, 0, any.val.NumField())
+	for i := 0; i < any.val.NumField(); i++ {
+		keys = append(keys, any.val.Type().Field(i).Name)
+	}
+	return keys
+}
+
+func (any *objectAny) Size() int {
+	return any.val.NumField()
+}
+
+func (any *objectAny) WriteTo(stream *Stream) {
+	stream.WriteVal(any.val)
+}
+
+func (any *objectAny) GetInterface() interface{} {
+	return any.val.Interface()
+}
+
+type mapAny struct {
+	baseAny
+	err error
+	val reflect.Value
+}
+
+func wrapMap(val interface{}) *mapAny {
+	return &mapAny{baseAny{}, nil, reflect.ValueOf(val)}
+}
+
+func (any *mapAny) ValueType() ValueType {
+	return ObjectValue
+}
+
+func (any *mapAny) MustBeValid() Any {
+	return any
+}
+
+func (any *mapAny) Parse() *Iterator {
+	return nil
+}
+
+func (any *mapAny) LastError() error {
+	return any.err
+}
+
+func (any *mapAny) ToBool() bool {
+	return true
+}
+
+func (any *mapAny) ToInt() int {
+	return 0
+}
+
+func (any *mapAny) ToInt32() int32 {
+	return 0
+}
+
+func (any *mapAny) ToInt64() int64 {
+	return 0
+}
+
+func (any *mapAny) ToUint() uint {
+	return 0
+}
+
+func (any *mapAny) ToUint32() uint32 {
+	return 0
+}
+
+func (any *mapAny) ToUint64() uint64 {
+	return 0
+}
+
+func (any *mapAny) ToFloat32() float32 {
+	return 0
+}
+
+func (any *mapAny) ToFloat64() float64 {
+	return 0
+}
+
+func (any *mapAny) ToString() string {
+	str, err := MarshalToString(any.val.Interface())
+	any.err = err
+	return str
+}
+
+func (any *mapAny) Get(path ...interface{}) Any {
+	if len(path) == 0 {
+		return any
+	}
+	switch firstPath := path[0].(type) {
+	case int32:
+		if '*' == firstPath {
+			mappedAll := map[string]Any{}
+			for _, key := range any.val.MapKeys() {
+				keyAsStr := key.String()
+				element := Wrap(any.val.MapIndex(key).Interface())
+				mapped := element.Get(path[1:]...)
+				if mapped.ValueType() != InvalidValue {
+					mappedAll[keyAsStr] = mapped
+				}
+			}
+			return wrapMap(mappedAll)
+		}
+		return newInvalidAny(path)
+	default:
+		value := any.val.MapIndex(reflect.ValueOf(firstPath))
+		if !value.IsValid() {
+			return newInvalidAny(path)
+		}
+		return Wrap(value.Interface())
+	}
+}
+
+func (any *mapAny) Keys() []string {
+	keys := make([]string, 0, any.val.Len())
+	for _, key := range any.val.MapKeys() {
+		keys = append(keys, key.String())
+	}
+	return keys
+}
+
+func (any *mapAny) Size() int {
+	return any.val.Len()
+}
+
+func (any *mapAny) WriteTo(stream *Stream) {
+	stream.WriteVal(any.val)
+}
+
+func (any *mapAny) GetInterface() interface{} {
+	return any.val.Interface()
+}

feature_any_string.go

@@ -0,0 +1,166 @@
+package jsoniter
+
+import (
+	"fmt"
+	"strconv"
+)
+
+type stringAny struct {
+	baseAny
+	val string
+}
+
+func (any *stringAny) Get(path ...interface{}) Any {
+	if len(path) == 0 {
+		return any
+	}
+	return &invalidAny{baseAny{}, fmt.Errorf("Get %v from simple value", path)}
+}
+
+func (any *stringAny) Parse() *Iterator {
+	return nil
+}
+
+func (any *stringAny) ValueType() ValueType {
+	return StringValue
+}
+
+func (any *stringAny) MustBeValid() Any {
+	return any
+}
+
+func (any *stringAny) LastError() error {
+	return nil
+}
+
+func (any *stringAny) ToBool() bool {
+	str := any.ToString()
+	if str == "0" {
+		return false
+	}
+	for _, c := range str {
+		switch c {
+		case ' ', '\n', '\r', '\t':
+		default:
+			return true
+		}
+	}
+	return false
+}
+
+func (any *stringAny) ToInt() int {
+	return int(any.ToInt64())
+
+}
+
+func (any *stringAny) ToInt32() int32 {
+	return int32(any.ToInt64())
+}
+
+func (any *stringAny) ToInt64() int64 {
+	if any.val == "" {
+		return 0
+	}
+
+	flag := 1
+	startPos := 0
+	endPos := 0
+	if any.val[0] == '+' || any.val[0] == '-' {
+		startPos = 1
+	}
+
+	if any.val[0] == '-' {
+		flag = -1
+	}
+
+	for i := startPos; i < len(any.val); i++ {
+		if any.val[i] >= '0' && any.val[i] <= '9' {
+			endPos = i + 1
+		} else {
+			break
+		}
+	}
+	parsed, _ := strconv.ParseInt(any.val[startPos:endPos], 10, 64)
+	return int64(flag) * parsed
+}
+
+func (any *stringAny) ToUint() uint {
+	return uint(any.ToUint64())
+}
+
+func (any *stringAny) ToUint32() uint32 {
+	return uint32(any.ToUint64())
+}
+
+func (any *stringAny) ToUint64() uint64 {
+	if any.val == "" {
+		return 0
+	}
+
+	startPos := 0
+	endPos := 0
+
+	if any.val[0] == '-' {
+		return 0
+	}
+	if any.val[0] == '+' {
+		startPos = 1
+	}
+
+	for i := startPos; i < len(any.val); i++ {
+		if any.val[i] >= '0' && any.val[i] <= '9' {
+			endPos = i + 1
+		} else {
+			break
+		}
+	}
+	parsed, _ := strconv.ParseUint(any.val[startPos:endPos], 10, 64)
+	return parsed
+}
+
+func (any *stringAny) ToFloat32() float32 {
+	return float32(any.ToFloat64())
+}
+
+func (any *stringAny) ToFloat64() float64 {
+	if len(any.val) == 0 {
+		return 0
+	}
+
+	// first char invalid
+	if any.val[0] != '+' && any.val[0] != '-' && (any.val[0] > '9' || any.val[0] < '0') {
+		return 0
+	}
+
+	// extract valid num expression from string
+	// eg 123true => 123, -12.12xxa => -12.12
+	endPos := 1
+	for i := 1; i < len(any.val); i++ {
+		if any.val[i] == '.' || any.val[i] == 'e' || any.val[i] == 'E' || any.val[i] == '+' || any.val[i] == '-' {
+			endPos = i + 1
+			continue
+		}
+
+		// end position is the first char which is not digit
+		if any.val[i] >= '0' && any.val[i] <= '9' {
+			endPos = i + 1
+		} else {
+			endPos = i
+			break
+		}
+	}
+	parsed, _ := strconv.ParseFloat(any.val[:endPos], 64)
+	return parsed
+}
+
+func (any *stringAny) ToString() string {
+	return any.val
+}
+
+func (any *stringAny) WriteTo(stream *Stream) {
+	stream.WriteString(any.val)
+}
+
+func (any *stringAny) GetInterface() interface{} {
+	return any.val
+}

feature_any_uint32.go

@@ -0,0 +1,74 @@
+package jsoniter
+
+import (
+	"strconv"
+)
+
+type uint32Any struct {
+	baseAny
+	val uint32
+}
+
+func (any *uint32Any) LastError() error {
+	return nil
+}
+
+func (any *uint32Any) ValueType() ValueType {
+	return NumberValue
+}
+
+func (any *uint32Any) MustBeValid() Any {
+	return any
+}
+
+func (any *uint32Any) ToBool() bool {
+	return any.val != 0
+}
+
+func (any *uint32Any) ToInt() int {
+	return int(any.val)
+}
+
+func (any *uint32Any) ToInt32() int32 {
+	return int32(any.val)
+}
+
+func (any *uint32Any) ToInt64() int64 {
+	return int64(any.val)
+}
+
+func (any *uint32Any) ToUint() uint {
+	return uint(any.val)
+}
+
+func (any *uint32Any) ToUint32() uint32 {
+	return any.val
+}
+
+func (any *uint32Any) ToUint64() uint64 {
+	return uint64(any.val)
+}
+
+func (any *uint32Any) ToFloat32() float32 {
+	return float32(any.val)
+}
+
+func (any *uint32Any) ToFloat64() float64 {
+	return float64(any.val)
+}
+
+func (any *uint32Any) ToString() string {
+	return strconv.FormatInt(int64(any.val), 10)
+}
+
+func (any *uint32Any) WriteTo(stream *Stream) {
+	stream.WriteUint32(any.val)
+}
+
+func (any *uint32Any) Parse() *Iterator {
+	return nil
+}
+
+func (any *uint32Any) GetInterface() interface{} {
+	return any.val
+}

feature_any_uint64.go

@@ -0,0 +1,74 @@
+package jsoniter
+
+import (
+	"strconv"
+)
+
+type uint64Any struct {
+	baseAny
+	val uint64
+}
+
+func (any *uint64Any) LastError() error {
+	return nil
+}
+
+func (any *uint64Any) ValueType() ValueType {
+	return NumberValue
+}
+
+func (any *uint64Any) MustBeValid() Any {
+	return any
+}
+
+func (any *uint64Any) ToBool() bool {
+	return any.val != 0
+}
+
+func (any *uint64Any) ToInt() int {
+	return int(any.val)
+}
+
+func (any *uint64Any) ToInt32() int32 {
+	return int32(any.val)
+}
+
+func (any *uint64Any) ToInt64() int64 {
+	return int64(any.val)
+}
+
+func (any *uint64Any) ToUint() uint {
+	return uint(any.val)
+}
+
+func (any *uint64Any) ToUint32() uint32 {
+	return uint32(any.val)
+}
+
+func (any *uint64Any) ToUint64() uint64 {
+	return any.val
+}
+
+func (any *uint64Any) ToFloat32() float32 {
+	return float32(any.val)
+}
+
+func (any *uint64Any) ToFloat64() float64 {
+	return float64(any.val)
+}
+
+func (any *uint64Any) ToString() string {
+	return strconv.FormatUint(any.val, 10)
+}
+
+func (any *uint64Any) WriteTo(stream *Stream) {
+	stream.WriteUint64(any.val)
+}
+
+func (any *uint64Any) Parse() *Iterator {
+	return nil
+}
+
+func (any *uint64Any) GetInterface() interface{} {
+	return any.val
+}

feature_config.go

@@ -0,0 +1,312 @@
+package jsoniter
+
+import (
+	"encoding/json"
+	"errors"
+	"io"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+// Config customize how the API should behave.
+// The API is created from Config by Froze.
+type Config struct {
+	IndentionStep           int
+	MarshalFloatWith6Digits bool
+	EscapeHTML              bool
+	SortMapKeys             bool
+	UseNumber               bool
+	TagKey                  string
+}
+
+type frozenConfig struct {
+	configBeforeFrozen Config
+	sortMapKeys        bool
+	indentionStep      int
+	decoderCache       unsafe.Pointer
+	encoderCache       unsafe.Pointer
+	extensions         []Extension
+	streamPool         chan *Stream
+	iteratorPool       chan *Iterator
+}
+
+// API the public interface of this package.
+// Primary Marshal and Unmarshal.
+type API interface {
+	IteratorPool
+	StreamPool
+	MarshalToString(v interface{}) (string, error)
+	Marshal(v interface{}) ([]byte, error)
+	MarshalIndent(v interface{}, prefix, indent string) ([]byte, error)
+	UnmarshalFromString(str string, v interface{}) error
+	Unmarshal(data []byte, v interface{}) error
+	Get(data []byte, path ...interface{}) Any
+	NewEncoder(writer io.Writer) *Encoder
+	NewDecoder(reader io.Reader) *Decoder
+}
+
+// ConfigDefault the default API
+var ConfigDefault = Config{
+	EscapeHTML: true,
+}.Froze()
+
+// ConfigCompatibleWithStandardLibrary tries to be 100% compatible with standard library behavior
+var ConfigCompatibleWithStandardLibrary = Config{
+	EscapeHTML:  true,
+	SortMapKeys: true,
+}.Froze()
+
+// ConfigFastest marshals float with only 6 digits precision
+var ConfigFastest = Config{
+	EscapeHTML:              false,
+	MarshalFloatWith6Digits: true,
+}.Froze()
+
+// Froze forge API from config
+func (cfg Config) Froze() API {
+	// TODO: cache frozen config
+	frozenConfig := &frozenConfig{
+		sortMapKeys:   cfg.SortMapKeys,
+		indentionStep: cfg.IndentionStep,
+		streamPool:    make(chan *Stream, 16),
+		iteratorPool:  make(chan *Iterator, 16),
+	}
+	atomic.StorePointer(&frozenConfig.decoderCache, unsafe.Pointer(&map[string]ValDecoder{}))
+	atomic.StorePointer(&frozenConfig.encoderCache, unsafe.Pointer(&map[string]ValEncoder{}))
+	if cfg.MarshalFloatWith6Digits {
+		frozenConfig.marshalFloatWith6Digits()
+	}
+	if cfg.EscapeHTML {
+		frozenConfig.escapeHTML()
+	}
+	if cfg.UseNumber {
+		frozenConfig.useNumber()
+	}
+	frozenConfig.configBeforeFrozen = cfg
+	return frozenConfig
+}
+
+func (cfg *frozenConfig) useNumber() {
+	cfg.addDecoderToCache(reflect.TypeOf((*interface{})(nil)).Elem(), &funcDecoder{func(ptr unsafe.Pointer, iter *Iterator) {
+		if iter.WhatIsNext() == NumberValue {
+			*((*interface{})(ptr)) = json.Number(iter.readNumberAsString())
+		} else {
+			*((*interface{})(ptr)) = iter.Read()
+		}
+	}})
+}
+func (cfg *frozenConfig) getTagKey() string {
+	tagKey := cfg.configBeforeFrozen.TagKey
+	if tagKey == "" {
+		return "json"
+	}
+	return tagKey
+}
+
+func (cfg *frozenConfig) registerExtension(extension Extension) {
+	cfg.extensions = append(cfg.extensions, extension)
+}
+
+type lossyFloat32Encoder struct {
+}
+
+func (encoder *lossyFloat32Encoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteFloat32Lossy(*((*float32)(ptr)))
+}
+
+func (encoder *lossyFloat32Encoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *lossyFloat32Encoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*float32)(ptr)) == 0
+}
+
+type lossyFloat64Encoder struct {
+}
+
+func (encoder *lossyFloat64Encoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteFloat64Lossy(*((*float64)(ptr)))
+}
+
+func (encoder *lossyFloat64Encoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *lossyFloat64Encoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*float64)(ptr)) == 0
+}
+
+// EnableLossyFloatMarshalling keeps 10**(-6) precision
+// for float variables for better performance.
+func (cfg *frozenConfig) marshalFloatWith6Digits() {
+	// for better performance
+	cfg.addEncoderToCache(reflect.TypeOf((*float32)(nil)).Elem(), &lossyFloat32Encoder{})
+	cfg.addEncoderToCache(reflect.TypeOf((*float64)(nil)).Elem(), &lossyFloat64Encoder{})
+}
+
+type htmlEscapedStringEncoder struct {
+}
+
+func (encoder *htmlEscapedStringEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	str := *((*string)(ptr))
+	stream.WriteStringWithHTMLEscaped(str)
+}
+
+func (encoder *htmlEscapedStringEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *htmlEscapedStringEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*string)(ptr)) == ""
+}
+
+func (cfg *frozenConfig) escapeHTML() {
+	cfg.addEncoderToCache(reflect.TypeOf((*string)(nil)).Elem(), &htmlEscapedStringEncoder{})
+}
+
+func (cfg *frozenConfig) addDecoderToCache(cacheKey reflect.Type, decoder ValDecoder) {
+	done := false
+	for !done {
+		ptr := atomic.LoadPointer(&cfg.decoderCache)
+		cache := *(*map[reflect.Type]ValDecoder)(ptr)
+		copied := map[reflect.Type]ValDecoder{}
+		for k, v := range cache {
+			copied[k] = v
+		}
+		copied[cacheKey] = decoder
+		done = atomic.CompareAndSwapPointer(&cfg.decoderCache, ptr, unsafe.Pointer(&copied))
+	}
+}
+
+func (cfg *frozenConfig) addEncoderToCache(cacheKey reflect.Type, encoder ValEncoder) {
+	done := false
+	for !done {
+		ptr := atomic.LoadPointer(&cfg.encoderCache)
+		cache := *(*map[reflect.Type]ValEncoder)(ptr)
+		copied := map[reflect.Type]ValEncoder{}
+		for k, v := range cache {
+			copied[k] = v
+		}
+		copied[cacheKey] = encoder
+		done = atomic.CompareAndSwapPointer(&cfg.encoderCache, ptr, unsafe.Pointer(&copied))
+	}
+}
+
+func (cfg *frozenConfig) getDecoderFromCache(cacheKey reflect.Type) ValDecoder {
+	ptr := atomic.LoadPointer(&cfg.decoderCache)
+	cache := *(*map[reflect.Type]ValDecoder)(ptr)
+	return cache[cacheKey]
+}
+
+func (cfg *frozenConfig) getEncoderFromCache(cacheKey reflect.Type) ValEncoder {
+	ptr := atomic.LoadPointer(&cfg.encoderCache)
+	cache := *(*map[reflect.Type]ValEncoder)(ptr)
+	return cache[cacheKey]
+}
+
+func (cfg *frozenConfig) cleanDecoders() {
+	typeDecoders = map[string]ValDecoder{}
+	fieldDecoders = map[string]ValDecoder{}
+	*cfg = *(cfg.configBeforeFrozen.Froze().(*frozenConfig))
+}
+
+func (cfg *frozenConfig) cleanEncoders() {
+	typeEncoders = map[string]ValEncoder{}
+	fieldEncoders = map[string]ValEncoder{}
+	*cfg = *(cfg.configBeforeFrozen.Froze().(*frozenConfig))
+}
+
+func (cfg *frozenConfig) MarshalToString(v interface{}) (string, error) {
+	stream := cfg.BorrowStream(nil)
+	defer cfg.ReturnStream(stream)
+	stream.WriteVal(v)
+	if stream.Error != nil {
+		return "", stream.Error
+	}
+	return string(stream.Buffer()), nil
+}
+
+func (cfg *frozenConfig) Marshal(v interface{}) ([]byte, error) {
+	stream := cfg.BorrowStream(nil)
+	defer cfg.ReturnStream(stream)
+	stream.WriteVal(v)
+	if stream.Error != nil {
+		return nil, stream.Error
+	}
+	result := stream.Buffer()
+	copied := make([]byte, len(result))
+	copy(copied, result)
+	return copied, nil
+}
+
+func (cfg *frozenConfig) MarshalIndent(v interface{}, prefix, indent string) ([]byte, error) {
+	if prefix != "" {
+		panic("prefix is not supported")
+	}
+	for _, r := range indent {
+		if r != ' ' {
+			panic("indent can only be space")
+		}
+	}
+	newCfg := cfg.configBeforeFrozen
+	newCfg.IndentionStep = len(indent)
+	return newCfg.Froze().Marshal(v)
+}
+
+func (cfg *frozenConfig) UnmarshalFromString(str string, v interface{}) error {
+	data := []byte(str)
+	data = data[:lastNotSpacePos(data)]
+	iter := cfg.BorrowIterator(data)
+	defer cfg.ReturnIterator(iter)
+	iter.ReadVal(v)
+	if iter.head == iter.tail {
+		iter.loadMore()
+	}
+	if iter.Error == io.EOF {
+		return nil
+	}
+	if iter.Error == nil {
+		iter.ReportError("UnmarshalFromString", "there are bytes left after unmarshal")
+	}
+	return iter.Error
+}
+
+func (cfg *frozenConfig) Get(data []byte, path ...interface{}) Any {
+	iter := cfg.BorrowIterator(data)
+	defer cfg.ReturnIterator(iter)
+	return locatePath(iter, path)
+}
+
+func (cfg *frozenConfig) Unmarshal(data []byte, v interface{}) error {
+	data = data[:lastNotSpacePos(data)]
+	iter := cfg.BorrowIterator(data)
+	defer cfg.ReturnIterator(iter)
+	typ := reflect.TypeOf(v)
+	if typ.Kind() != reflect.Ptr {
+		// return non-pointer error
+		return errors.New("the second param must be ptr type")
+	}
+	iter.ReadVal(v)
+	if iter.head == iter.tail {
+		iter.loadMore()
+	}
+	if iter.Error == io.EOF {
+		return nil
+	}
+	if iter.Error == nil {
+		iter.ReportError("Unmarshal", "there are bytes left after unmarshal")
+	}
+	return iter.Error
+}
+
+func (cfg *frozenConfig) NewEncoder(writer io.Writer) *Encoder {
+	stream := NewStream(cfg, writer, 512)
+	return &Encoder{stream}
+}
+
+func (cfg *frozenConfig) NewDecoder(reader io.Reader) *Decoder {
+	iter := Parse(cfg, reader, 512)
+	return &Decoder{iter}
+}

feature_iter.go

@@ -0,0 +1,307 @@
+package jsoniter
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+)
+
+// ValueType the type for JSON element
+type ValueType int
+
+const (
+	// InvalidValue invalid JSON element
+	InvalidValue ValueType = iota
+	// StringValue JSON element "string"
+	StringValue
+	// NumberValue JSON element 100 or 0.10
+	NumberValue
+	// NilValue JSON element null
+	NilValue
+	// BoolValue JSON element true or false
+	BoolValue
+	// ArrayValue JSON element []
+	ArrayValue
+	// ObjectValue JSON element {}
+	ObjectValue
+)
+
+var hexDigits []byte
+var valueTypes []ValueType
+
+func init() {
+	hexDigits = make([]byte, 256)
+	for i := 0; i < len(hexDigits); i++ {
+		hexDigits[i] = 255
+	}
+	for i := '0'; i <= '9'; i++ {
+		hexDigits[i] = byte(i - '0')
+	}
+	for i := 'a'; i <= 'f'; i++ {
+		hexDigits[i] = byte((i - 'a') + 10)
+	}
+	for i := 'A'; i <= 'F'; i++ {
+		hexDigits[i] = byte((i - 'A') + 10)
+	}
+	valueTypes = make([]ValueType, 256)
+	for i := 0; i < len(valueTypes); i++ {
+		valueTypes[i] = InvalidValue
+	}
+	valueTypes['"'] = StringValue
+	valueTypes['-'] = NumberValue
+	valueTypes['0'] = NumberValue
+	valueTypes['1'] = NumberValue
+	valueTypes['2'] = NumberValue
+	valueTypes['3'] = NumberValue
+	valueTypes['4'] = NumberValue
+	valueTypes['5'] = NumberValue
+	valueTypes['6'] = NumberValue
+	valueTypes['7'] = NumberValue
+	valueTypes['8'] = NumberValue
+	valueTypes['9'] = NumberValue
+	valueTypes['t'] = BoolValue
+	valueTypes['f'] = BoolValue
+	valueTypes['n'] = NilValue
+	valueTypes['['] = ArrayValue
+	valueTypes['{'] = ObjectValue
+}
+
+// Iterator is a io.Reader like object, with JSON specific read functions.
+// Error is not returned as return value, but stored as Error member on this iterator instance.
+type Iterator struct {
+	cfg              *frozenConfig
+	reader           io.Reader
+	buf              []byte
+	head             int
+	tail             int
+	captureStartedAt int
+	captured         []byte
+	Error            error
+}
+
+// NewIterator creates an empty Iterator instance
+func NewIterator(cfg API) *Iterator {
+	return &Iterator{
+		cfg:    cfg.(*frozenConfig),
+		reader: nil,
+		buf:    nil,
+		head:   0,
+		tail:   0,
+	}
+}
+
+// Parse creates an Iterator instance from io.Reader
+func Parse(cfg API, reader io.Reader, bufSize int) *Iterator {
+	return &Iterator{
+		cfg:    cfg.(*frozenConfig),
+		reader: reader,
+		buf:    make([]byte, bufSize),
+		head:   0,
+		tail:   0,
+	}
+}
+
+// ParseBytes creates an Iterator instance from byte array
+func ParseBytes(cfg API, input []byte) *Iterator {
+	return &Iterator{
+		cfg:    cfg.(*frozenConfig),
+		reader: nil,
+		buf:    input,
+		head:   0,
+		tail:   len(input),
+	}
+}
+
+// ParseString creates an Iterator instance from string
+func ParseString(cfg API, input string) *Iterator {
+	return ParseBytes(cfg, []byte(input))
+}
+
+// Pool returns a pool can provide more iterator with same configuration
+func (iter *Iterator) Pool() IteratorPool {
+	return iter.cfg
+}
+
+// Reset reuse iterator instance by specifying another reader
+func (iter *Iterator) Reset(reader io.Reader) *Iterator {
+	iter.reader = reader
+	iter.head = 0
+	iter.tail = 0
+	return iter
+}
+
+// ResetBytes reuse iterator instance by specifying another byte array as input
+func (iter *Iterator) ResetBytes(input []byte) *Iterator {
+	iter.reader = nil
+	iter.buf = input
+	iter.head = 0
+	iter.tail = len(input)
+	return iter
+}
+
+// WhatIsNext gets ValueType of relatively next json element
+func (iter *Iterator) WhatIsNext() ValueType {
+	valueType := valueTypes[iter.nextToken()]
+	iter.unreadByte()
+	return valueType
+}
+
+func (iter *Iterator) skipWhitespacesWithoutLoadMore() bool {
+	for i := iter.head; i < iter.tail; i++ {
+		c := iter.buf[i]
+		switch c {
+		case ' ', '\n', '\t', '\r':
+			continue
+		}
+		iter.head = i
+		return false
+	}
+	return true
+}
+
+func (iter *Iterator) isObjectEnd() bool {
+	c := iter.nextToken()
+	if c == ',' {
+		return false
+	}
+	if c == '}' {
+		return true
+	}
+	iter.ReportError("isObjectEnd", "object ended prematurely")
+	return true
+}
+
+func (iter *Iterator) nextToken() byte {
+	// a variation of skip whitespaces, returning the next non-whitespace token
+	for {
+		for i := iter.head; i < iter.tail; i++ {
+			c := iter.buf[i]
+			switch c {
+			case ' ', '\n', '\t', '\r':
+				continue
+			}
+			iter.head = i + 1
+			return c
+		}
+		if !iter.loadMore() {
+			return 0
+		}
+	}
+}
+
+// ReportError record a error in iterator instance with current position.
+func (iter *Iterator) ReportError(operation string, msg string) {
+	if iter.Error != nil {
+		if iter.Error != io.EOF {
+			return
+		}
+	}
+	peekStart := iter.head - 10
+	if peekStart < 0 {
+		peekStart = 0
+	}
+	iter.Error = fmt.Errorf("%s: %s, parsing %v ...%s... at %s", operation, msg, iter.head,
+		string(iter.buf[peekStart:iter.head]), string(iter.buf[0:iter.tail]))
+}
+
+// CurrentBuffer gets current buffer as string for debugging purpose
+func (iter *Iterator) CurrentBuffer() string {
+	peekStart := iter.head - 10
+	if peekStart < 0 {
+		peekStart = 0
+	}
+	return fmt.Sprintf("parsing %v ...|%s|... at %s", iter.head,
+		string(iter.buf[peekStart:iter.head]), string(iter.buf[0:iter.tail]))
+}
+
+func (iter *Iterator) readByte() (ret byte) {
+	if iter.head == iter.tail {
+		if iter.loadMore() {
+			ret = iter.buf[iter.head]
+			iter.head++
+			return ret
+		}
+		return 0
+	}
+	ret = iter.buf[iter.head]
+	iter.head++
+	return ret
+}
+
+func (iter *Iterator) loadMore() bool {
+	if iter.reader == nil {
+		if iter.Error == nil {
+			iter.head = iter.tail
+			iter.Error = io.EOF
+		}
+		return false
+	}
+	if iter.captured != nil {
+		iter.captured = append(iter.captured,
+			iter.buf[iter.captureStartedAt:iter.tail]...)
+		iter.captureStartedAt = 0
+	}
+	for {
+		n, err := iter.reader.Read(iter.buf)
+		if n == 0 {
+			if err != nil {
+				if iter.Error == nil {
+					iter.Error = err
+				}
+				return false
+			}
+		} else {
+			iter.head = 0
+			iter.tail = n
+			return true
+		}
+	}
+}
+
+func (iter *Iterator) unreadByte() {
+	if iter.Error != nil {
+		return
+	}
+	iter.head--
+	return
+}
+
+// Read read the next JSON element as generic interface{}.
+func (iter *Iterator) Read() interface{} {
+	valueType := iter.WhatIsNext()
+	switch valueType {
+	case StringValue:
+		return iter.ReadString()
+	case NumberValue:
+		if iter.cfg.configBeforeFrozen.UseNumber {
+			return json.Number(iter.readNumberAsString())
+		}
+		return iter.ReadFloat64()
+	case NilValue:
+		iter.skipFourBytes('n', 'u', 'l', 'l')
+		return nil
+	case BoolValue:
+		return iter.ReadBool()
+	case ArrayValue:
+		arr := []interface{}{}
+		iter.ReadArrayCB(func(iter *Iterator) bool {
+			var elem interface{}
+			iter.ReadVal(&elem)
+			arr = append(arr, elem)
+			return true
+		})
+		return arr
+	case ObjectValue:
+		obj := map[string]interface{}{}
+		iter.ReadMapCB(func(Iter *Iterator, field string) bool {
+			var elem interface{}
+			iter.ReadVal(&elem)
+			obj[field] = elem
+			return true
+		})
+		return obj
+	default:
+		iter.ReportError("Read", fmt.Sprintf("unexpected value type: %v", valueType))
+		return nil
+	}
+}

feature_iter_array.go

@@ -0,0 +1,58 @@
+package jsoniter
+
+// ReadArray read array element, tells if the array has more element to read.
+func (iter *Iterator) ReadArray() (ret bool) {
+	c := iter.nextToken()
+	switch c {
+	case 'n':
+		iter.skipThreeBytes('u', 'l', 'l')
+		return false // null
+	case '[':
+		c = iter.nextToken()
+		if c != ']' {
+			iter.unreadByte()
+			return true
+		}
+		return false
+	case ']':
+		return false
+	case ',':
+		return true
+	default:
+		iter.ReportError("ReadArray", "expect [ or , or ] or n, but found: "+string([]byte{c}))
+		return
+	}
+}
+
+// ReadArrayCB read array with callback
+func (iter *Iterator) ReadArrayCB(callback func(*Iterator) bool) (ret bool) {
+	c := iter.nextToken()
+	if c == '[' {
+		c = iter.nextToken()
+		if c != ']' {
+			iter.unreadByte()
+			if !callback(iter) {
+				return false
+			}
+			c = iter.nextToken()
+			for c == ',' {
+				if !callback(iter) {
+					return false
+				}
+				c = iter.nextToken()
+			}
+			if c != ']' {
+				iter.ReportError("ReadArrayCB", "expect ] in the end")
+				return false
+			}
+			return true
+		}
+		return true
+	}
+	if c == 'n' {
+		iter.skipThreeBytes('u', 'l', 'l')
+		return true // null
+	}
+	iter.ReportError("ReadArrayCB", "expect [ or n, but found: "+string([]byte{c}))
+	return false
+}

feature_iter_float.go

@@ -0,0 +1,341 @@
+package jsoniter
+
+import (
+	"io"
+	"math/big"
+	"strconv"
+	"strings"
+	"unsafe"
+)
+
+var floatDigits []int8
+
+const invalidCharForNumber = int8(-1)
+const endOfNumber = int8(-2)
+const dotInNumber = int8(-3)
+
+func init() {
+	floatDigits = make([]int8, 256)
+	for i := 0; i < len(floatDigits); i++ {
+		floatDigits[i] = invalidCharForNumber
+	}
+	for i := int8('0'); i <= int8('9'); i++ {
+		floatDigits[i] = i - int8('0')
+	}
+	floatDigits[','] = endOfNumber
+	floatDigits[']'] = endOfNumber
+	floatDigits['}'] = endOfNumber
+	floatDigits[' '] = endOfNumber
+	floatDigits['\t'] = endOfNumber
+	floatDigits['\n'] = endOfNumber
+	floatDigits['.'] = dotInNumber
+}
+
+// ReadBigFloat read big.Float
+func (iter *Iterator) ReadBigFloat() (ret *big.Float) {
+	str := iter.readNumberAsString()
+	if iter.Error != nil && iter.Error != io.EOF {
+		return nil
+	}
+	prec := 64
+	if len(str) > prec {
+		prec = len(str)
+	}
+	val, _, err := big.ParseFloat(str, 10, uint(prec), big.ToZero)
+	if err != nil {
+		iter.Error = err
+		return nil
+	}
+	return val
+}
+
+// ReadBigInt read big.Int
+func (iter *Iterator) ReadBigInt() (ret *big.Int) {
+	str := iter.readNumberAsString()
+	if iter.Error != nil && iter.Error != io.EOF {
+		return nil
+	}
+	ret = big.NewInt(0)
+	var success bool
+	ret, success = ret.SetString(str, 10)
+	if !success {
+		iter.ReportError("ReadBigInt", "invalid big int")
+		return nil
+	}
+	return ret
+}
+
+//ReadFloat32 read float32
+func (iter *Iterator) ReadFloat32() (ret float32) {
+	c := iter.nextToken()
+	if c == '-' {
+		return -iter.readPositiveFloat32()
+	}
+	iter.unreadByte()
+	return iter.readPositiveFloat32()
+}
+
+func (iter *Iterator) readPositiveFloat32() (ret float32) {
+	value := uint64(0)
+	c := byte(' ')
+	i := iter.head
+	// first char
+	if i == iter.tail {
+		return iter.readFloat32SlowPath()
+	}
+	c = iter.buf[i]
+	i++
+	ind := floatDigits[c]
+	switch ind {
+	case invalidCharForNumber:
+		return iter.readFloat32SlowPath()
+	case endOfNumber:
+		iter.ReportError("readFloat32", "empty number")
+		return
+	case dotInNumber:
+		iter.ReportError("readFloat32", "leading dot is invalid")
+		return
+	case 0:
+		if i == iter.tail {
+			return iter.readFloat32SlowPath()
+		}
+		c = iter.buf[i]
+		switch c {
+		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+			iter.ReportError("readFloat32", "leading zero is invalid")
+			return
+		}
+	}
+	value = uint64(ind)
+	// chars before dot
+non_decimal_loop:
+	for ; i < iter.tail; i++ {
+		c = iter.buf[i]
+		ind := floatDigits[c]
+		switch ind {
+		case invalidCharForNumber:
+			return iter.readFloat32SlowPath()
+		case endOfNumber:
+			iter.head = i
+			return float32(value)
+		case dotInNumber:
+			break non_decimal_loop
+		}
+		if value > uint64SafeToMultiple10 {
+			return iter.readFloat32SlowPath()
+		}
+		value = (value << 3) + (value << 1) + uint64(ind) // value = value * 10 + ind;
+	}
+	// chars after dot
+	if c == '.' {
+		i++
+		decimalPlaces := 0
+		if i == iter.tail {
+			return iter.readFloat32SlowPath()
+		}
+		for ; i < iter.tail; i++ {
+			c = iter.buf[i]
+			ind := floatDigits[c]
+			switch ind {
+			case endOfNumber:
+				if decimalPlaces > 0 && decimalPlaces < len(pow10) {
+					iter.head = i
+					return float32(float64(value) / float64(pow10[decimalPlaces]))
+				}
+				// too many decimal places
+				return iter.readFloat32SlowPath()
+			case invalidCharForNumber:
+				fallthrough
+			case dotInNumber:
+				return iter.readFloat32SlowPath()
+			}
+			decimalPlaces++
+			if value > uint64SafeToMultiple10 {
+				return iter.readFloat32SlowPath()
+			}
+			value = (value << 3) + (value << 1) + uint64(ind)
+		}
+	}
+	return iter.readFloat32SlowPath()
+}
+
+func (iter *Iterator) readNumberAsString() (ret string) {
+	strBuf := [16]byte{}
+	str := strBuf[0:0]
+load_loop:
+	for {
+		for i := iter.head; i < iter.tail; i++ {
+			c := iter.buf[i]
+			switch c {
+			case '+', '-', '.', 'e', 'E', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+				str = append(str, c)
+				continue
+			default:
+				iter.head = i
+				break load_loop
+			}
+		}
+		if !iter.loadMore() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		return
+	}
+	if len(str) == 0 {
+		iter.ReportError("readNumberAsString", "invalid number")
+	}
+	return *(*string)(unsafe.Pointer(&str))
+}
+
+func (iter *Iterator) readFloat32SlowPath() (ret float32) {
+	str := iter.readNumberAsString()
+	if iter.Error != nil && iter.Error != io.EOF {
+		return
+	}
+	errMsg := validateFloat(str)
+	if errMsg != "" {
+		iter.ReportError("readFloat32SlowPath", errMsg)
+		return
+	}
+	val, err := strconv.ParseFloat(str, 32)
+	if err != nil {
+		iter.Error = err
+		return
+	}
+	return float32(val)
+}
+
+// ReadFloat64 read float64
+func (iter *Iterator) ReadFloat64() (ret float64) {
+	c := iter.nextToken()
+	if c == '-' {
+		return -iter.readPositiveFloat64()
+	}
+	iter.unreadByte()
+	return iter.readPositiveFloat64()
+}
+
+func (iter *Iterator) readPositiveFloat64() (ret float64) {
+	value := uint64(0)
+	c := byte(' ')
+	i := iter.head
+	// first char
+	if i == iter.tail {
+		return iter.readFloat64SlowPath()
+	}
+	c = iter.buf[i]
+	i++
+	ind := floatDigits[c]
+	switch ind {
+	case invalidCharForNumber:
+		return iter.readFloat64SlowPath()
+	case endOfNumber:
+		iter.ReportError("readFloat64", "empty number")
+		return
+	case dotInNumber:
+		iter.ReportError("readFloat64", "leading dot is invalid")
+		return
+	case 0:
+		if i == iter.tail {
+			return iter.readFloat64SlowPath()
+		}
+		c = iter.buf[i]
+		switch c {
+		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+			iter.ReportError("readFloat64", "leading zero is invalid")
+			return
+		}
+	}
+	value = uint64(ind)
+	// chars before dot
+non_decimal_loop:
+	for ; i < iter.tail; i++ {
+		c = iter.buf[i]
+		ind := floatDigits[c]
+		switch ind {
+		case invalidCharForNumber:
+			return iter.readFloat64SlowPath()
+		case endOfNumber:
+			iter.head = i
+			return float64(value)
+		case dotInNumber:
+			break non_decimal_loop
+		}
+		if value > uint64SafeToMultiple10 {
+			return iter.readFloat64SlowPath()
+		}
+		value = (value << 3) + (value << 1) + uint64(ind) // value = value * 10 + ind;
+	}
+	// chars after dot
+	if c == '.' {
+		i++
+		decimalPlaces := 0
+		if i == iter.tail {
+			return iter.readFloat64SlowPath()
+		}
+		for ; i < iter.tail; i++ {
+			c = iter.buf[i]
+			ind := floatDigits[c]
+			switch ind {
+			case endOfNumber:
+				if decimalPlaces > 0 && decimalPlaces < len(pow10) {
+					iter.head = i
+					return float64(value) / float64(pow10[decimalPlaces])
+				}
+				// too many decimal places
+				return iter.readFloat64SlowPath()
+			case invalidCharForNumber:
+				fallthrough
+			case dotInNumber:
+				return iter.readFloat64SlowPath()
+			}
+			decimalPlaces++
+			if value > uint64SafeToMultiple10 {
+				return iter.readFloat64SlowPath()
+			}
+			value = (value << 3) + (value << 1) + uint64(ind)
+		}
+	}
+	return iter.readFloat64SlowPath()
+}
+
+func (iter *Iterator) readFloat64SlowPath() (ret float64) {
+	str := iter.readNumberAsString()
+	if iter.Error != nil && iter.Error != io.EOF {
+		return
+	}
+	errMsg := validateFloat(str)
+	if errMsg != "" {
+		iter.ReportError("readFloat64SlowPath", errMsg)
+		return
+	}
+	val, err := strconv.ParseFloat(str, 64)
+	if err != nil {
+		iter.Error = err
+		return
+	}
+	return val
+}
+
+func validateFloat(str string) string {
+	// strconv.ParseFloat is not validating `1.` or `1.e1`
+	if len(str) == 0 {
+		return "empty number"
+	}
+	if str[0] == '-' {
+		return "-- is not valid"
+	}
+	dotPos := strings.IndexByte(str, '.')
+	if dotPos != -1 {
+		if dotPos == len(str)-1 {
+			return "dot can not be last character"
+		}
+		switch str[dotPos+1] {
+		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+		default:
+			return "missing digit after dot"
+		}
+	}
+	return ""
+}

feature_iter_int.go

@@ -0,0 +1,258 @@
+package jsoniter
+
+import (
+	"math"
+	"strconv"
+)
+
+var intDigits []int8
+
+const uint32SafeToMultiply10 = uint32(0xffffffff)/10 - 1
+const uint64SafeToMultiple10 = uint64(0xffffffffffffffff)/10 - 1
+
+func init() {
+	intDigits = make([]int8, 256)
+	for i := 0; i < len(intDigits); i++ {
+		intDigits[i] = invalidCharForNumber
+	}
+	for i := int8('0'); i <= int8('9'); i++ {
+		intDigits[i] = i - int8('0')
+	}
+}
+
+// ReadUint read uint
+func (iter *Iterator) ReadUint() uint {
+	return uint(iter.ReadUint64())
+}
+
+// ReadInt read int
+func (iter *Iterator) ReadInt() int {
+	return int(iter.ReadInt64())
+}
+
+// ReadInt8 read int8
+func (iter *Iterator) ReadInt8() (ret int8) {
+	c := iter.nextToken()
+	if c == '-' {
+		val := iter.readUint32(iter.readByte())
+		if val > math.MaxInt8+1 {
+			iter.ReportError("ReadInt8", "overflow: "+strconv.FormatInt(int64(val), 10))
+			return
+		}
+		return -int8(val)
+	}
+	val := iter.readUint32(c)
+	if val > math.MaxInt8 {
+		iter.ReportError("ReadInt8", "overflow: "+strconv.FormatInt(int64(val), 10))
+		return
+	}
+	return int8(val)
+}
+
+// ReadUint8 read uint8
+func (iter *Iterator) ReadUint8() (ret uint8) {
+	val := iter.readUint32(iter.nextToken())
+	if val > math.MaxUint8 {
+		iter.ReportError("ReadUint8", "overflow: "+strconv.FormatInt(int64(val), 10))
+		return
+	}
+	return uint8(val)
+}
+
+// ReadInt16 read int16
+func (iter *Iterator) ReadInt16() (ret int16) {
+	c := iter.nextToken()
+	if c == '-' {
+		val := iter.readUint32(iter.readByte())
+		if val > math.MaxInt16+1 {
+			iter.ReportError("ReadInt16", "overflow: "+strconv.FormatInt(int64(val), 10))
+			return
+		}
+		return -int16(val)
+	}
+	val := iter.readUint32(c)
+	if val > math.MaxInt16 {
+		iter.ReportError("ReadInt16", "overflow: "+strconv.FormatInt(int64(val), 10))
+		return
+	}
+	return int16(val)
+}
+
+// ReadUint16 read uint16
+func (iter *Iterator) ReadUint16() (ret uint16) {
+	val := iter.readUint32(iter.nextToken())
+	if val > math.MaxUint16 {
+		iter.ReportError("ReadUint16", "overflow: "+strconv.FormatInt(int64(val), 10))
+		return
+	}
+	return uint16(val)
+}
+
+// ReadInt32 read int32
+func (iter *Iterator) ReadInt32() (ret int32) {
+	c := iter.nextToken()
+	if c == '-' {
+		val := iter.readUint32(iter.readByte())
+		if val > math.MaxInt32+1 {
+			iter.ReportError("ReadInt32", "overflow: "+strconv.FormatInt(int64(val), 10))
+			return
+		}
+		return -int32(val)
+	}
+	val := iter.readUint32(c)
+	if val > math.MaxInt32 {
+		iter.ReportError("ReadInt32", "overflow: "+strconv.FormatInt(int64(val), 10))
+		return
+	}
+	return int32(val)
+}
+
+// ReadUint32 read uint32
+func (iter *Iterator) ReadUint32() (ret uint32) {
+	return iter.readUint32(iter.nextToken())
+}
+
+func (iter *Iterator) readUint32(c byte) (ret uint32) {
+	ind := intDigits[c]
+	if ind == 0 {
+		return 0 // single zero
+	}
+	if ind == invalidCharForNumber {
+		iter.ReportError("readUint32", "unexpected character: "+string([]byte{byte(ind)}))
+		return
+	}
+	value := uint32(ind)
+	if iter.tail-iter.head > 10 {
+		i := iter.head
+		ind2 := intDigits[iter.buf[i]]
+		if ind2 == invalidCharForNumber {
+			iter.head = i
+			return value
+		}
+		i++
+		ind3 := intDigits[iter.buf[i]]
+		if ind3 == invalidCharForNumber {
+			iter.head = i
+			return value*10 + uint32(ind2)
+		}
+		//iter.head = i + 1
+		//value = value * 100 + uint32(ind2) * 10 + uint32(ind3)
+		i++
+		ind4 := intDigits[iter.buf[i]]
+		if ind4 == invalidCharForNumber {
+			iter.head = i
+			return value*100 + uint32(ind2)*10 + uint32(ind3)
+		}
+		i++
+		ind5 := intDigits[iter.buf[i]]
+		if ind5 == invalidCharForNumber {
+			iter.head = i
+			return value*1000 + uint32(ind2)*100 + uint32(ind3)*10 + uint32(ind4)
+		}
+		i++
+		ind6 := intDigits[iter.buf[i]]
+		if ind6 == invalidCharForNumber {
+			iter.head = i
+			return value*10000 + uint32(ind2)*1000 + uint32(ind3)*100 + uint32(ind4)*10 + uint32(ind5)
+		}
+		i++
+		ind7 := intDigits[iter.buf[i]]
+		if ind7 == invalidCharForNumber {
+			iter.head = i
+			return value*100000 + uint32(ind2)*10000 + uint32(ind3)*1000 + uint32(ind4)*100 + uint32(ind5)*10 + uint32(ind6)
+		}
+		i++
+		ind8 := intDigits[iter.buf[i]]
+		if ind8 == invalidCharForNumber {
+			iter.head = i
+			return value*1000000 + uint32(ind2)*100000 + uint32(ind3)*10000 + uint32(ind4)*1000 + uint32(ind5)*100 + uint32(ind6)*10 + uint32(ind7)
+		}
+		i++
+		ind9 := intDigits[iter.buf[i]]
+		value = value*10000000 + uint32(ind2)*1000000 + uint32(ind3)*100000 + uint32(ind4)*10000 + uint32(ind5)*1000 + uint32(ind6)*100 + uint32(ind7)*10 + uint32(ind8)
+		iter.head = i
+		if ind9 == invalidCharForNumber {
+			return value
+		}
+	}
+	for {
+		for i := iter.head; i < iter.tail; i++ {
+			ind = intDigits[iter.buf[i]]
+			if ind == invalidCharForNumber {
+				iter.head = i
+				return value
+			}
+			if value > uint32SafeToMultiply10 {
+				value2 := (value << 3) + (value << 1) + uint32(ind)
+				if value2 < value {
+					iter.ReportError("readUint32", "overflow")
+					return
+				}
+				value = value2
+				continue
+			}
+			value = (value << 3) + (value << 1) + uint32(ind)
+		}
+		if !iter.loadMore() {
+			return value
+		}
+	}
+}
+
+// ReadInt64 read int64
+func (iter *Iterator) ReadInt64() (ret int64) {
+	c := iter.nextToken()
+	if c == '-' {
+		val := iter.readUint64(iter.readByte())
+		if val > math.MaxInt64+1 {
+			iter.ReportError("ReadInt64", "overflow: "+strconv.FormatUint(uint64(val), 10))
+			return
+		}
+		return -int64(val)
+	}
+	val := iter.readUint64(c)
+	if val > math.MaxInt64 {
+		iter.ReportError("ReadInt64", "overflow: "+strconv.FormatUint(uint64(val), 10))
+		return
+	}
+	return int64(val)
+}
+
+// ReadUint64 read uint64
+func (iter *Iterator) ReadUint64() uint64 {
+	return iter.readUint64(iter.nextToken())
+}
+
+func (iter *Iterator) readUint64(c byte) (ret uint64) {
+	ind := intDigits[c]
+	if ind == 0 {
+		return 0 // single zero
+	}
+	if ind == invalidCharForNumber {
+		iter.ReportError("readUint64", "unexpected character: "+string([]byte{byte(ind)}))
+		return
+	}
+	value := uint64(ind)
+	for {
+		for i := iter.head; i < iter.tail; i++ {
+			ind = intDigits[iter.buf[i]]
+			if ind == invalidCharForNumber {
+				iter.head = i
+				return value
+			}
+			if value > uint64SafeToMultiple10 {
+				value2 := (value << 3) + (value << 1) + uint64(ind)
+				if value2 < value {
+					iter.ReportError("readUint64", "overflow")
+					return
+				}
+				value = value2
+				continue
+			}
+			value = (value << 3) + (value << 1) + uint64(ind)
+		}
+		if !iter.loadMore() {
+			return value
+		}
+	}
+}

feature_iter_object.go

@@ -0,0 +1,212 @@
+package jsoniter
+
+import (
+	"fmt"
+	"unicode"
+	"unsafe"
+)
+
+// ReadObject read one field from object.
+// If object ended, returns empty string.
+// Otherwise, returns the field name.
+func (iter *Iterator) ReadObject() (ret string) {
+	c := iter.nextToken()
+	switch c {
+	case 'n':
+		iter.skipThreeBytes('u', 'l', 'l')
+		return "" // null
+	case '{':
+		c = iter.nextToken()
+		if c == '"' {
+			iter.unreadByte()
+			return string(iter.readObjectFieldAsBytes())
+		}
+		if c == '}' {
+			return "" // end of object
+		}
+		iter.ReportError("ReadObject", `expect " after {`)
+		return
+	case ',':
+		return string(iter.readObjectFieldAsBytes())
+	case '}':
+		return "" // end of object
+	default:
+		iter.ReportError("ReadObject", fmt.Sprintf(`expect { or , or } or n, but found %s`, string([]byte{c})))
+		return
+	}
+}
+
+func (iter *Iterator) readFieldHash() int32 {
+	hash := int64(0x811c9dc5)
+	c := iter.nextToken()
+	if c == '"' {
+		for {
+			for i := iter.head; i < iter.tail; i++ {
+				// require ascii string and no escape
+				b := iter.buf[i]
+				if 'A' <= b && b <= 'Z' {
+					b += 'a' - 'A'
+				}
+				if b == '"' {
+					iter.head = i + 1
+					c = iter.nextToken()
+					if c != ':' {
+						iter.ReportError("readFieldHash", `expect :, but found `+string([]byte{c}))
+					}
+					return int32(hash)
+				}
+				hash ^= int64(b)
+				hash *= 0x1000193
+			}
+			if !iter.loadMore() {
+				iter.ReportError("readFieldHash", `incomplete field name`)
+				return 0
+			}
+		}
+	}
+	iter.ReportError("readFieldHash", `expect ", but found `+string([]byte{c}))
+	return 0
+}
+
+func calcHash(str string) int32 {
+	hash := int64(0x811c9dc5)
+	for _, b := range str {
+		hash ^= int64(unicode.ToLower(b))
+		hash *= 0x1000193
+	}
+	return int32(hash)
+}
+
+// ReadObjectCB read object with callback, the key is ascii only and field name not copied
+func (iter *Iterator) ReadObjectCB(callback func(*Iterator, string) bool) bool {
+	c := iter.nextToken()
+	if c == '{' {
+		c = iter.nextToken()
+		if c == '"' {
+			iter.unreadByte()
+			field := iter.readObjectFieldAsBytes()
+			if !callback(iter, *(*string)(unsafe.Pointer(&field))) {
+				return false
+			}
+			c = iter.nextToken()
+			for c == ',' {
+				field = iter.readObjectFieldAsBytes()
+				if !callback(iter, *(*string)(unsafe.Pointer(&field))) {
+					return false
+				}
+				c = iter.nextToken()
+			}
+			if c != '}' {
+				iter.ReportError("ReadObjectCB", `object not ended with }`)
+				return false
+			}
+			return true
+		}
+		if c == '}' {
+			return true
+		}
+		iter.ReportError("ReadObjectCB", `expect " after }`)
+		return false
+	}
+	if c == 'n' {
+		iter.skipThreeBytes('u', 'l', 'l')
+		return true // null
+	}
+	iter.ReportError("ReadObjectCB", `expect { or n`)
+	return false
+}
+
+// ReadMapCB read map with callback, the key can be any string
+func (iter *Iterator) ReadMapCB(callback func(*Iterator, string) bool) bool {
+	c := iter.nextToken()
+	if c == '{' {
+		c = iter.nextToken()
+		if c == '"' {
+			iter.unreadByte()
+			field := iter.ReadString()
+			if iter.nextToken() != ':' {
+				iter.ReportError("ReadMapCB", "expect : after object field")
+				return false
+			}
+			if !callback(iter, field) {
+				return false
+			}
+			c = iter.nextToken()
+			for c == ',' {
+				field = iter.ReadString()
+				if iter.nextToken() != ':' {
+					iter.ReportError("ReadMapCB", "expect : after object field")
+					return false
+				}
+				if !callback(iter, field) {
+					return false
+				}
+				c = iter.nextToken()
+			}
+			if c != '}' {
+				iter.ReportError("ReadMapCB", `object not ended with }`)
+				return false
+			}
+			return true
+		}
+		if c == '}' {
+			return true
+		}
+		iter.ReportError("ReadMapCB", `expect " after }`)
+		return false
+	}
+	if c == 'n' {
+		iter.skipThreeBytes('u', 'l', 'l')
+		return true // null
+	}
+	iter.ReportError("ReadMapCB", `expect { or n`)
+	return false
+}
+
+func (iter *Iterator) readObjectStart() bool {
+	c := iter.nextToken()
+	if c == '{' {
+		c = iter.nextToken()
+		if c == '}' {
+			return false
+		}
+		iter.unreadByte()
+		return true
+	} else if c == 'n' {
+		iter.skipThreeBytes('u', 'l', 'l')
+		return false
+	}
+	iter.ReportError("readObjectStart", "expect { or n")
+	return false
+}
+
+func (iter *Iterator) readObjectFieldAsBytes() (ret []byte) {
+	str := iter.ReadStringAsSlice()
+	if iter.skipWhitespacesWithoutLoadMore() {
+		if ret == nil {
+			ret = make([]byte, len(str))
+			copy(ret, str)
+		}
+		if !iter.loadMore() {
+			return
+		}
+	}
+	if iter.buf[iter.head] != ':' {
+		iter.ReportError("readObjectFieldAsBytes", "expect : after object field")
+		return
+	}
+	iter.head++
+	if iter.skipWhitespacesWithoutLoadMore() {
+		if ret == nil {
+			ret = make([]byte, len(str))
+			copy(ret, str)
+		}
+		if !iter.loadMore() {
+			return
+		}
+	}
+	if ret == nil {
+		return str
+	}
+	return ret
+}

feature_iter_skip.go

@@ -0,0 +1,127 @@
+package jsoniter
+
+import "fmt"
+
+// ReadNil reads a json object as nil and
+// returns whether it's a nil or not
+func (iter *Iterator) ReadNil() (ret bool) {
+	c := iter.nextToken()
+	if c == 'n' {
+		iter.skipThreeBytes('u', 'l', 'l') // null
+		return true
+	}
+	iter.unreadByte()
+	return false
+}
+
+// ReadBool reads a json object as BoolValue
+func (iter *Iterator) ReadBool() (ret bool) {
+	c := iter.nextToken()
+	if c == 't' {
+		iter.skipThreeBytes('r', 'u', 'e')
+		return true
+	}
+	if c == 'f' {
+		iter.skipFourBytes('a', 'l', 's', 'e')
+		return false
+	}
+	iter.ReportError("ReadBool", "expect t or f")
+	return
+}
+
+// SkipAndReturnBytes skip next JSON element, and return its content as []byte.
+// The []byte can be kept, it is a copy of data.
+func (iter *Iterator) SkipAndReturnBytes() []byte {
+	iter.startCapture(iter.head)
+	iter.Skip()
+	return iter.stopCapture()
+}
+
+type captureBuffer struct {
+	startedAt int
+	captured  []byte
+}
+
+func (iter *Iterator) startCapture(captureStartedAt int) {
+	if iter.captured != nil {
+		panic("already in capture mode")
+	}
+	iter.captureStartedAt = captureStartedAt
+	iter.captured = make([]byte, 0, 32)
+}
+
+func (iter *Iterator) stopCapture() []byte {
+	if iter.captured == nil {
+		panic("not in capture mode")
+	}
+	captured := iter.captured
+	remaining := iter.buf[iter.captureStartedAt:iter.head]
+	iter.captureStartedAt = -1
+	iter.captured = nil
+	if len(captured) == 0 {
+		return remaining
+	}
+	captured = append(captured, remaining...)
+	return captured
+}
+
+// Skip skips a json object and positions to relatively the next json object
+func (iter *Iterator) Skip() {
+	c := iter.nextToken()
+	switch c {
+	case '"':
+		iter.skipString()
+	case 'n':
+		iter.skipThreeBytes('u', 'l', 'l') // null
+	case 't':
+		iter.skipThreeBytes('r', 'u', 'e') // true
+	case 'f':
+		iter.skipFourBytes('a', 'l', 's', 'e') // false
+	case '0':
+		iter.unreadByte()
+		iter.ReadFloat32()
+	case '-', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+		iter.skipNumber()
+	case '[':
+		iter.skipArray()
+	case '{':
+		iter.skipObject()
+	default:
+		iter.ReportError("Skip", fmt.Sprintf("do not know how to skip: %v", c))
+		return
+	}
+}
+
+func (iter *Iterator) skipFourBytes(b1, b2, b3, b4 byte) {
+	if iter.readByte() != b1 {
+		iter.ReportError("skipFourBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3, b4})))
+		return
+	}
+	if iter.readByte() != b2 {
+		iter.ReportError("skipFourBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3, b4})))
+		return
+	}
+	if iter.readByte() != b3 {
+		iter.ReportError("skipFourBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3, b4})))
+		return
+	}
+	if iter.readByte() != b4 {
+		iter.ReportError("skipFourBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3, b4})))
+		return
+	}
+}
+
+func (iter *Iterator) skipThreeBytes(b1, b2, b3 byte) {
+	if iter.readByte() != b1 {
+		iter.ReportError("skipThreeBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3})))
+		return
+	}
+	if iter.readByte() != b2 {
+		iter.ReportError("skipThreeBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3})))
+		return
+	}
+	if iter.readByte() != b3 {
+		iter.ReportError("skipThreeBytes", fmt.Sprintf("expect %s", string([]byte{b1, b2, b3})))
+		return
+	}
+}

feature_iter_skip_sloppy.go

@@ -0,0 +1,144 @@
+//+build jsoniter-sloppy
+
+package jsoniter
+
+// sloppy but faster implementation, do not validate the input json
+
+func (iter *Iterator) skipNumber() {
+	for {
+		for i := iter.head; i < iter.tail; i++ {
+			c := iter.buf[i]
+			switch c {
+			case ' ', '\n', '\r', '\t', ',', '}', ']':
+				iter.head = i
+				return
+			}
+		}
+		if !iter.loadMore() {
+			return
+		}
+	}
+}
+
+func (iter *Iterator) skipArray() {
+	level := 1
+	for {
+		for i := iter.head; i < iter.tail; i++ {
+			switch iter.buf[i] {
+			case '"': // If inside string, skip it
+				iter.head = i + 1
+				iter.skipString()
+				i = iter.head - 1 // it will be i++ soon
+			case '[': // If open symbol, increase level
+				level++
+			case ']': // If close symbol, increase level
+				level--
+
+				// If we have returned to the original level, we're done
+				if level == 0 {
+					iter.head = i + 1
+					return
+				}
+			}
+		}
+		if !iter.loadMore() {
+			iter.ReportError("skipObject", "incomplete array")
+			return
+		}
+	}
+}
+
+func (iter *Iterator) skipObject() {
+	level := 1
+	for {
+		for i := iter.head; i < iter.tail; i++ {
+			switch iter.buf[i] {
+			case '"': // If inside string, skip it
+				iter.head = i + 1
+				iter.skipString()
+				i = iter.head - 1 // it will be i++ soon
+			case '{': // If open symbol, increase level
+				level++
+			case '}': // If close symbol, increase level
+				level--
+
+				// If we have returned to the original level, we're done
+				if level == 0 {
+					iter.head = i + 1
+					return
+				}
+			}
+		}
+		if !iter.loadMore() {
+			iter.ReportError("skipObject", "incomplete object")
+			return
+		}
+	}
+}
+
+func (iter *Iterator) skipString() {
+	for {
+		end, escaped := iter.findStringEnd()
+		if end == -1 {
+			if !iter.loadMore() {
+				iter.ReportError("skipString", "incomplete string")
+				return
+			}
+			if escaped {
+				iter.head = 1 // skip the first char as last char read is \
+			}
+		} else {
+			iter.head = end
+			return
+		}
+	}
+}
+
+// adapted from: https://github.com/buger/jsonparser/blob/master/parser.go
+// Tries to find the end of string
+// Support if string contains escaped quote symbols.
+func (iter *Iterator) findStringEnd() (int, bool) {
+	escaped := false
+	for i := iter.head; i < iter.tail; i++ {
+		c := iter.buf[i]
+		if c == '"' {
+			if !escaped {
+				return i + 1, false
+			}
+			j := i - 1
+			for {
+				if j < iter.head || iter.buf[j] != '\\' {
+					// even number of backslashes
+					// either end of buffer, or " found
+					return i + 1, true
+				}
+				j--
+				if j < iter.head || iter.buf[j] != '\\' {
+					// odd number of backslashes
+					// it is \" or \\\"
+					break
+				}
+				j--
+			}
+		} else if c == '\\' {
+			escaped = true
+		}
+	}
+	j := iter.tail - 1
+	for {
+		if j < iter.head || iter.buf[j] != '\\' {
+			// even number of backslashes
+			// either end of buffer, or " found
+			return -1, false // do not end with \
+		}
+		j--
+		if j < iter.head || iter.buf[j] != '\\' {
+			// odd number of backslashes
+			// it is \" or \\\"
+			break
+		}
+		j--
+
+	}
+	return -1, true // end with \
+}

feature_iter_skip_strict.go

@@ -0,0 +1,89 @@
+//+build !jsoniter-sloppy
+
+package jsoniter
+
+import "fmt"
+
+func (iter *Iterator) skipNumber() {
+	if !iter.trySkipNumber() {
+		iter.unreadByte()
+		iter.ReadFloat32()
+	}
+}
+
+func (iter *Iterator) trySkipNumber() bool {
+	dotFound := false
+	for i := iter.head; i < iter.tail; i++ {
+		c := iter.buf[i]
+		switch c {
+		case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+		case '.':
+			if dotFound {
+				iter.ReportError("validateNumber", `more than one dot found in number`)
+				return true // already failed
+			}
+			if i+1 == iter.tail {
+				return false
+			}
+			c = iter.buf[i+1]
+			switch c {
+			case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+			default:
+				iter.ReportError("validateNumber", `missing digit after dot`)
+				return true // already failed
+			}
+			dotFound = true
+		default:
+			switch c {
+			case ',', ']', '}', ' ', '\t', '\n', '\r':
+				if iter.head == i {
+					return false // if - without following digits
+				}
+				iter.head = i
+				return true // must be valid
+			}
+			return false // may be invalid
+		}
+	}
+	return false
+}
+
+func (iter *Iterator) skipString() {
+	if !iter.trySkipString() {
+		iter.unreadByte()
+		iter.ReadString()
+	}
+}
+
+func (iter *Iterator) trySkipString() bool {
+	for i := iter.head; i < iter.tail; i++ {
+		c := iter.buf[i]
+		if c == '"' {
+			iter.head = i + 1
+			return true // valid
+		} else if c == '\\' {
+			return false
+		} else if c < ' ' {
+			iter.ReportError("ReadString",
+				fmt.Sprintf(`invalid control character found: %d`, c))
+			return true // already failed
+		}
+	}
+	return false
+}
+
+func (iter *Iterator) skipObject() {
+	iter.unreadByte()
+	iter.ReadObjectCB(func(iter *Iterator, field string) bool {
+		iter.Skip()
+		return true
+	})
+}
+
+func (iter *Iterator) skipArray() {
+	iter.unreadByte()
+	iter.ReadArrayCB(func(iter *Iterator) bool {
+		iter.Skip()
+		return true
+	})
+}

feature_iter_string.go

@@ -0,0 +1,215 @@
+package jsoniter
+
+import (
+	"fmt"
+	"unicode/utf16"
+)
+
+// ReadString read string from iterator
+func (iter *Iterator) ReadString() (ret string) {
+	c := iter.nextToken()
+	if c == '"' {
+		for i := iter.head; i < iter.tail; i++ {
+			c := iter.buf[i]
+			if c == '"' {
+				ret = string(iter.buf[iter.head:i])
+				iter.head = i + 1
+				return ret
+			} else if c == '\\' {
+				break
+			} else if c < ' ' {
+				iter.ReportError("ReadString",
+					fmt.Sprintf(`invalid control character found: %d`, c))
+				return
+			}
+		}
+		return iter.readStringSlowPath()
+	} else if c == 'n' {
+		iter.skipThreeBytes('u', 'l', 'l')
+		return ""
+	}
+	iter.ReportError("ReadString", `expects " or n`)
+	return
+}
+
+func (iter *Iterator) readStringSlowPath() (ret string) {
+	var str []byte
+	var c byte
+	for iter.Error == nil {
+		c = iter.readByte()
+		if c == '"' {
+			return string(str)
+		}
+		if c == '\\' {
+			c = iter.readByte()
+			str = iter.readEscapedChar(c, str)
+		} else {
+			str = append(str, c)
+		}
+	}
+	iter.ReportError("ReadString", "unexpected end of input")
+	return
+}
+
+func (iter *Iterator) readEscapedChar(c byte, str []byte) []byte {
+	switch c {
+	case 'u':
+		r := iter.readU4()
+		if utf16.IsSurrogate(r) {
+			c = iter.readByte()
+			if iter.Error != nil {
+				return nil
+			}
+			if c != '\\' {
+				iter.unreadByte()
+				str = appendRune(str, r)
+				return str
+			}
+			c = iter.readByte()
+			if iter.Error != nil {
+				return nil
+			}
+			if c != 'u' {
+				str = appendRune(str, r)
+				return iter.readEscapedChar(c, str)
+			}
+			r2 := iter.readU4()
+			if iter.Error != nil {
+				return nil
+			}
+			combined := utf16.DecodeRune(r, r2)
+			if combined == '\uFFFD' {
+				str = appendRune(str, r)
+				str = appendRune(str, r2)
+			} else {
+				str = appendRune(str, combined)
+			}
+		} else {
+			str = appendRune(str, r)
+		}
+	case '"':
+		str = append(str, '"')
+	case '\\':
+		str = append(str, '\\')
+	case '/':
+		str = append(str, '/')
+	case 'b':
+		str = append(str, '\b')
+	case 'f':
+		str = append(str, '\f')
+	case 'n':
+		str = append(str, '\n')
+	case 'r':
+		str = append(str, '\r')
+	case 't':
+		str = append(str, '\t')
+	default:
+		iter.ReportError("ReadString",
+			`invalid escape char after \`)
+		return nil
+	}
+	return str
+}
+
+// ReadStringAsSlice read string from iterator without copying into string form.
+// The []byte can not be kept, as it will change after next iterator call.
+func (iter *Iterator) ReadStringAsSlice() (ret []byte) {
+	c := iter.nextToken()
+	if c == '"' {
+		for i := iter.head; i < iter.tail; i++ {
+			// require ascii string and no escape
+			// for: field name, base64, number
+			if iter.buf[i] == '"' {
+				// fast path: reuse the underlying buffer
+				ret = iter.buf[iter.head:i]
+				iter.head = i + 1
+				return ret
+			}
+		}
+		readLen := iter.tail - iter.head
+		copied := make([]byte, readLen, readLen*2)
+		copy(copied, iter.buf[iter.head:iter.tail])
+		iter.head = iter.tail
+		for iter.Error == nil {
+			c := iter.readByte()
+			if c == '"' {
+				return copied
+			}
+			copied = append(copied, c)
+		}
+		return copied
+	}
+	iter.ReportError("ReadString", `expects " or n`)
+	return
+}
+
+func (iter *Iterator) readU4() (ret rune) {
+	for i := 0; i < 4; i++ {
+		c := iter.readByte()
+		if iter.Error != nil {
+			return
+		}
+		if c >= '0' && c <= '9' {
+			ret = ret*16 + rune(c-'0')
+		} else if c >= 'a' && c <= 'f' {
+			ret = ret*16 + rune(c-'a'+10)
+		} else if c >= 'A' && c <= 'F' {
+			ret = ret*16 + rune(c-'A'+10)
+		} else {
+			iter.ReportError("readU4", "expects 0~9 or a~f")
+			return
+		}
+	}
+	return ret
+}
+
+const (
+	t1 = 0x00 // 0000 0000
+	tx = 0x80 // 1000 0000
+	t2 = 0xC0 // 1100 0000
+	t3 = 0xE0 // 1110 0000
+	t4 = 0xF0 // 1111 0000
+	t5 = 0xF8 // 1111 1000
+
+	maskx = 0x3F // 0011 1111
+	mask2 = 0x1F // 0001 1111
+	mask3 = 0x0F // 0000 1111
+	mask4 = 0x07 // 0000 0111
+
+	rune1Max = 1<<7 - 1
+	rune2Max = 1<<11 - 1
+	rune3Max = 1<<16 - 1
+
+	surrogateMin = 0xD800
+	surrogateMax = 0xDFFF
+
+	maxRune   = '\U0010FFFF' // Maximum valid Unicode code point.
+	runeError = '\uFFFD'     // the "error" Rune or "Unicode replacement character"
+)
+
+func appendRune(p []byte, r rune) []byte {
+	// Negative values are erroneous. Making it unsigned addresses the problem.
+	switch i := uint32(r); {
+	case i <= rune1Max:
+		p = append(p, byte(r))
+		return p
+	case i <= rune2Max:
+		p = append(p, t2|byte(r>>6))
+		p = append(p, tx|byte(r)&maskx)
+		return p
+	case i > maxRune, surrogateMin <= i && i <= surrogateMax:
+		r = runeError
+		fallthrough
+	case i <= rune3Max:
+		p = append(p, t3|byte(r>>12))
+		p = append(p, tx|byte(r>>6)&maskx)
+		p = append(p, tx|byte(r)&maskx)
+		return p
+	default:
+		p = append(p, t4|byte(r>>18))
+		p = append(p, tx|byte(r>>12)&maskx)
+		p = append(p, tx|byte(r>>6)&maskx)
+		p = append(p, tx|byte(r)&maskx)
+		return p
+	}
+}

feature_json_number.go

@@ -0,0 +1,15 @@
+package jsoniter
+
+import "encoding/json"
+
+type Number string
+
+func CastJsonNumber(val interface{}) (string, bool) {
+	switch typedVal := val.(type) {
+	case json.Number:
+		return string(typedVal), true
+	case Number:
+		return string(typedVal), true
+	}
+	return "", false
+}

feature_pool.go

@@ -0,0 +1,57 @@
+package jsoniter
+
+import (
+	"io"
+)
+
+// IteratorPool a thread safe pool of iterators with same configuration
+type IteratorPool interface {
+	BorrowIterator(data []byte) *Iterator
+	ReturnIterator(iter *Iterator)
+}
+
+// StreamPool a thread safe pool of streams with same configuration
+type StreamPool interface {
+	BorrowStream(writer io.Writer) *Stream
+	ReturnStream(stream *Stream)
+}
+
+func (cfg *frozenConfig) BorrowStream(writer io.Writer) *Stream {
+	select {
+	case stream := <-cfg.streamPool:
+		stream.Reset(writer)
+		return stream
+	default:
+		return NewStream(cfg, writer, 512)
+	}
+}
+
+func (cfg *frozenConfig) ReturnStream(stream *Stream) {
+	stream.Error = nil
+	select {
+	case cfg.streamPool <- stream:
+		return
+	default:
+		return
+	}
+}
+
+func (cfg *frozenConfig) BorrowIterator(data []byte) *Iterator {
+	select {
+	case iter := <-cfg.iteratorPool:
+		iter.ResetBytes(data)
+		return iter
+	default:
+		return ParseBytes(cfg, data)
+	}
+}
+
+func (cfg *frozenConfig) ReturnIterator(iter *Iterator) {
+	iter.Error = nil
+	select {
+	case cfg.iteratorPool <- iter:
+		return
+	default:
+		return
+	}
+}

feature_reflect.go

@@ -0,0 +1,691 @@
+package jsoniter
+
+import (
+	"encoding"
+	"encoding/json"
+	"fmt"
+	"reflect"
+	"time"
+	"unsafe"
+)
+
+// ValDecoder is an internal type registered to cache as needed.
+// Don't confuse jsoniter.ValDecoder with json.Decoder.
+// For json.Decoder's adapter, refer to jsoniter.AdapterDecoder(todo link).
+//
+// Reflection on type to create decoders, which is then cached
+// Reflection on value is avoided as we can, as the reflect.Value itself will allocate, with following exceptions
+// 1. create instance of new value, for example *int will need a int to be allocated
+// 2. append to slice, if the existing cap is not enough, allocate will be done using Reflect.New
+// 3. assignment to map, both key and value will be reflect.Value
+// For a simple struct binding, it will be reflect.Value free and allocation free
+type ValDecoder interface {
+	Decode(ptr unsafe.Pointer, iter *Iterator)
+}
+
+// ValEncoder is an internal type registered to cache as needed.
+// Don't confuse jsoniter.ValEncoder with json.Encoder.
+// For json.Encoder's adapter, refer to jsoniter.AdapterEncoder(todo godoc link).
+type ValEncoder interface {
+	IsEmpty(ptr unsafe.Pointer) bool
+	Encode(ptr unsafe.Pointer, stream *Stream)
+	EncodeInterface(val interface{}, stream *Stream)
+}
+
+type checkIsEmpty interface {
+	IsEmpty(ptr unsafe.Pointer) bool
+}
+
+// WriteToStream the default implementation for TypeEncoder method EncodeInterface
+func WriteToStream(val interface{}, stream *Stream, encoder ValEncoder) {
+	e := (*emptyInterface)(unsafe.Pointer(&val))
+	if e.word == nil {
+		stream.WriteNil()
+		return
+	}
+	if reflect.TypeOf(val).Kind() == reflect.Ptr {
+		encoder.Encode(unsafe.Pointer(&e.word), stream)
+	} else {
+		encoder.Encode(e.word, stream)
+	}
+}
+
+var jsonNumberType reflect.Type
+var jsoniterNumberType reflect.Type
+var jsonRawMessageType reflect.Type
+var jsoniterRawMessageType reflect.Type
+var anyType reflect.Type
+var marshalerType reflect.Type
+var unmarshalerType reflect.Type
+var textMarshalerType reflect.Type
+var textUnmarshalerType reflect.Type
+
+func init() {
+	jsonNumberType = reflect.TypeOf((*json.Number)(nil)).Elem()
+	jsoniterNumberType = reflect.TypeOf((*Number)(nil)).Elem()
+	jsonRawMessageType = reflect.TypeOf((*json.RawMessage)(nil)).Elem()
+	jsoniterRawMessageType = reflect.TypeOf((*RawMessage)(nil)).Elem()
+	anyType = reflect.TypeOf((*Any)(nil)).Elem()
+	marshalerType = reflect.TypeOf((*json.Marshaler)(nil)).Elem()
+	unmarshalerType = reflect.TypeOf((*json.Unmarshaler)(nil)).Elem()
+	textMarshalerType = reflect.TypeOf((*encoding.TextMarshaler)(nil)).Elem()
+	textUnmarshalerType = reflect.TypeOf((*encoding.TextUnmarshaler)(nil)).Elem()
+}
+
+type optionalDecoder struct {
+	valueType    reflect.Type
+	valueDecoder ValDecoder
+}
+
+func (decoder *optionalDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if iter.ReadNil() {
+		*((*unsafe.Pointer)(ptr)) = nil
+	} else {
+		if *((*unsafe.Pointer)(ptr)) == nil {
+			//pointer to null, we have to allocate memory to hold the value
+			value := reflect.New(decoder.valueType)
+			newPtr := extractInterface(value.Interface()).word
+			decoder.valueDecoder.Decode(newPtr, iter)
+			*((*uintptr)(ptr)) = uintptr(newPtr)
+		} else {
+			//reuse existing instance
+			decoder.valueDecoder.Decode(*((*unsafe.Pointer)(ptr)), iter)
+		}
+	}
+}
+
+type deferenceDecoder struct {
+	// only to deference a pointer
+	valueType    reflect.Type
+	valueDecoder ValDecoder
+}
+
+func (decoder *deferenceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if *((*unsafe.Pointer)(ptr)) == nil {
+		//pointer to null, we have to allocate memory to hold the value
+		value := reflect.New(decoder.valueType)
+		newPtr := extractInterface(value.Interface()).word
+		decoder.valueDecoder.Decode(newPtr, iter)
+		*((*uintptr)(ptr)) = uintptr(newPtr)
+	} else {
+		//reuse existing instance
+		decoder.valueDecoder.Decode(*((*unsafe.Pointer)(ptr)), iter)
+	}
+}
+
+type optionalEncoder struct {
+	valueEncoder ValEncoder
+}
+
+func (encoder *optionalEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	if *((*unsafe.Pointer)(ptr)) == nil {
+		stream.WriteNil()
+	} else {
+		encoder.valueEncoder.Encode(*((*unsafe.Pointer)(ptr)), stream)
+	}
+}
+
+func (encoder *optionalEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *optionalEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	if *((*unsafe.Pointer)(ptr)) == nil {
+		return true
+	}
+	return false
+}
+
+type placeholderEncoder struct {
+	cfg      *frozenConfig
+	cacheKey reflect.Type
+}
+
+func (encoder *placeholderEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	encoder.getRealEncoder().Encode(ptr, stream)
+}
+
+func (encoder *placeholderEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *placeholderEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return encoder.getRealEncoder().IsEmpty(ptr)
+}
+
+func (encoder *placeholderEncoder) getRealEncoder() ValEncoder {
+	for i := 0; i < 30; i++ {
+		realDecoder := encoder.cfg.getEncoderFromCache(encoder.cacheKey)
+		_, isPlaceholder := realDecoder.(*placeholderEncoder)
+		if isPlaceholder {
+			time.Sleep(time.Second)
+		} else {
+			return realDecoder
+		}
+	}
+	panic(fmt.Sprintf("real encoder not found for cache key: %v", encoder.cacheKey))
+}
+
+type placeholderDecoder struct {
+	cfg      *frozenConfig
+	cacheKey reflect.Type
+}
+
+func (decoder *placeholderDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	for i := 0; i < 30; i++ {
+		realDecoder := decoder.cfg.getDecoderFromCache(decoder.cacheKey)
+		_, isPlaceholder := realDecoder.(*placeholderDecoder)
+		if isPlaceholder {
+			time.Sleep(time.Second)
+		} else {
+			realDecoder.Decode(ptr, iter)
+			return
+		}
+	}
+	panic(fmt.Sprintf("real decoder not found for cache key: %v", decoder.cacheKey))
+}
+
+// emptyInterface is the header for an interface{} value.
+type emptyInterface struct {
+	typ  unsafe.Pointer
+	word unsafe.Pointer
+}
+
+// emptyInterface is the header for an interface with method (not interface{})
+type nonEmptyInterface struct {
+	// see ../runtime/iface.go:/Itab
+	itab *struct {
+		ityp   unsafe.Pointer // static interface type
+		typ    unsafe.Pointer // dynamic concrete type
+		link   unsafe.Pointer
+		bad    int32
+		unused int32
+		fun    [100000]unsafe.Pointer // method table
+	}
+	word unsafe.Pointer
+}
+
+// ReadVal copy the underlying JSON into go interface, same as json.Unmarshal
+func (iter *Iterator) ReadVal(obj interface{}) {
+	typ := reflect.TypeOf(obj)
+	cacheKey := typ.Elem()
+	decoder, err := decoderOfType(iter.cfg, cacheKey)
+	if err != nil {
+		iter.Error = err
+		return
+	}
+	e := (*emptyInterface)(unsafe.Pointer(&obj))
+	decoder.Decode(e.word, iter)
+}
+
+// WriteVal copy the go interface into underlying JSON, same as json.Marshal
+func (stream *Stream) WriteVal(val interface{}) {
+	if nil == val {
+		stream.WriteNil()
+		return
+	}
+	typ := reflect.TypeOf(val)
+	cacheKey := typ
+	encoder, err := encoderOfType(stream.cfg, cacheKey)
+	if err != nil {
+		stream.Error = err
+		return
+	}
+	encoder.EncodeInterface(val, stream)
+}
+
+type prefix string
+
+func (p prefix) addToDecoder(decoder ValDecoder, err error) (ValDecoder, error) {
+	if err != nil {
+		return nil, fmt.Errorf("%s: %s", p, err.Error())
+	}
+	return decoder, err
+}
+
+func (p prefix) addToEncoder(encoder ValEncoder, err error) (ValEncoder, error) {
+	if err != nil {
+		return nil, fmt.Errorf("%s: %s", p, err.Error())
+	}
+	return encoder, err
+}
+
+func decoderOfType(cfg *frozenConfig, typ reflect.Type) (ValDecoder, error) {
+	cacheKey := typ
+	decoder := cfg.getDecoderFromCache(cacheKey)
+	if decoder != nil {
+		return decoder, nil
+	}
+	decoder = getTypeDecoderFromExtension(typ)
+	if decoder != nil {
+		cfg.addDecoderToCache(cacheKey, decoder)
+		return decoder, nil
+	}
+	decoder = &placeholderDecoder{cfg: cfg, cacheKey: cacheKey}
+	cfg.addDecoderToCache(cacheKey, decoder)
+	decoder, err := createDecoderOfType(cfg, typ)
+	for _, extension := range extensions {
+		decoder = extension.DecorateDecoder(typ, decoder)
+	}
+	cfg.addDecoderToCache(cacheKey, decoder)
+	return decoder, err
+}
+
+func createDecoderOfType(cfg *frozenConfig, typ reflect.Type) (ValDecoder, error) {
+	typeName := typ.String()
+	if typ == jsonRawMessageType {
+		return &jsonRawMessageCodec{}, nil
+	}
+	if typ == jsoniterRawMessageType {
+		return &jsoniterRawMessageCodec{}, nil
+	}
+	if typ.AssignableTo(jsonNumberType) {
+		return &jsonNumberCodec{}, nil
+	}
+	if typ.AssignableTo(jsoniterNumberType) {
+		return &jsoniterNumberCodec{}, nil
+	}
+	if typ.Implements(unmarshalerType) {
+		templateInterface := reflect.New(typ).Elem().Interface()
+		var decoder ValDecoder = &unmarshalerDecoder{extractInterface(templateInterface)}
+		if typ.Kind() == reflect.Ptr {
+			decoder = &optionalDecoder{typ.Elem(), decoder}
+		}
+		return decoder, nil
+	}
+	if reflect.PtrTo(typ).Implements(unmarshalerType) {
+		templateInterface := reflect.New(typ).Interface()
+		var decoder ValDecoder = &unmarshalerDecoder{extractInterface(templateInterface)}
+		return decoder, nil
+	}
+	if typ.Implements(textUnmarshalerType) {
+		templateInterface := reflect.New(typ).Elem().Interface()
+		var decoder ValDecoder = &textUnmarshalerDecoder{extractInterface(templateInterface)}
+		if typ.Kind() == reflect.Ptr {
+			decoder = &optionalDecoder{typ.Elem(), decoder}
+		}
+		return decoder, nil
+	}
+	if reflect.PtrTo(typ).Implements(textUnmarshalerType) {
+		templateInterface := reflect.New(typ).Interface()
+		var decoder ValDecoder = &textUnmarshalerDecoder{extractInterface(templateInterface)}
+		return decoder, nil
+	}
+	if typ.Kind() == reflect.Slice && typ.Elem().Kind() == reflect.Uint8 {
+		sliceDecoder, err := prefix("[slice]").addToDecoder(decoderOfSlice(cfg, typ))
+		if err != nil {
+			return nil, err
+		}
+		return &base64Codec{sliceDecoder: sliceDecoder}, nil
+	}
+	if typ.Implements(anyType) {
+		return &anyCodec{}, nil
+	}
+	switch typ.Kind() {
+	case reflect.String:
+		if typeName != "string" {
+			return decoderOfType(cfg, reflect.TypeOf((*string)(nil)).Elem())
+		}
+		return &stringCodec{}, nil
+	case reflect.Int:
+		if typeName != "int" {
+			return decoderOfType(cfg, reflect.TypeOf((*int)(nil)).Elem())
+		}
+		return &intCodec{}, nil
+	case reflect.Int8:
+		if typeName != "int8" {
+			return decoderOfType(cfg, reflect.TypeOf((*int8)(nil)).Elem())
+		}
+		return &int8Codec{}, nil
+	case reflect.Int16:
+		if typeName != "int16" {
+			return decoderOfType(cfg, reflect.TypeOf((*int16)(nil)).Elem())
+		}
+		return &int16Codec{}, nil
+	case reflect.Int32:
+		if typeName != "int32" {
+			return decoderOfType(cfg, reflect.TypeOf((*int32)(nil)).Elem())
+		}
+		return &int32Codec{}, nil
+	case reflect.Int64:
+		if typeName != "int64" {
+			return decoderOfType(cfg, reflect.TypeOf((*int64)(nil)).Elem())
+		}
+		return &int64Codec{}, nil
+	case reflect.Uint:
+		if typeName != "uint" {
+			return decoderOfType(cfg, reflect.TypeOf((*uint)(nil)).Elem())
+		}
+		return &uintCodec{}, nil
+	case reflect.Uint8:
+		if typeName != "uint8" {
+			return decoderOfType(cfg, reflect.TypeOf((*uint8)(nil)).Elem())
+		}
+		return &uint8Codec{}, nil
+	case reflect.Uint16:
+		if typeName != "uint16" {
+			return decoderOfType(cfg, reflect.TypeOf((*uint16)(nil)).Elem())
+		}
+		return &uint16Codec{}, nil
+	case reflect.Uint32:
+		if typeName != "uint32" {
+			return decoderOfType(cfg, reflect.TypeOf((*uint32)(nil)).Elem())
+		}
+		return &uint32Codec{}, nil
+	case reflect.Uintptr:
+		if typeName != "uintptr" {
+			return decoderOfType(cfg, reflect.TypeOf((*uintptr)(nil)).Elem())
+		}
+		return &uintptrCodec{}, nil
+	case reflect.Uint64:
+		if typeName != "uint64" {
+			return decoderOfType(cfg, reflect.TypeOf((*uint64)(nil)).Elem())
+		}
+		return &uint64Codec{}, nil
+	case reflect.Float32:
+		if typeName != "float32" {
+			return decoderOfType(cfg, reflect.TypeOf((*float32)(nil)).Elem())
+		}
+		return &float32Codec{}, nil
+	case reflect.Float64:
+		if typeName != "float64" {
+			return decoderOfType(cfg, reflect.TypeOf((*float64)(nil)).Elem())
+		}
+		return &float64Codec{}, nil
+	case reflect.Bool:
+		if typeName != "bool" {
+			return decoderOfType(cfg, reflect.TypeOf((*bool)(nil)).Elem())
+		}
+		return &boolCodec{}, nil
+	case reflect.Interface:
+		if typ.NumMethod() == 0 {
+			return &emptyInterfaceCodec{}, nil
+		}
+		return &nonEmptyInterfaceCodec{}, nil
+	case reflect.Struct:
+		return prefix(fmt.Sprintf("[%s]", typeName)).addToDecoder(decoderOfStruct(cfg, typ))
+	case reflect.Array:
+		return prefix("[array]").addToDecoder(decoderOfArray(cfg, typ))
+	case reflect.Slice:
+		return prefix("[slice]").addToDecoder(decoderOfSlice(cfg, typ))
+	case reflect.Map:
+		return prefix("[map]").addToDecoder(decoderOfMap(cfg, typ))
+	case reflect.Ptr:
+		return prefix("[optional]").addToDecoder(decoderOfOptional(cfg, typ))
+	default:
+		return nil, fmt.Errorf("unsupported type: %v", typ)
+	}
+}
+
+func encoderOfType(cfg *frozenConfig, typ reflect.Type) (ValEncoder, error) {
+	cacheKey := typ
+	encoder := cfg.getEncoderFromCache(cacheKey)
+	if encoder != nil {
+		return encoder, nil
+	}
+	encoder = getTypeEncoderFromExtension(typ)
+	if encoder != nil {
+		cfg.addEncoderToCache(cacheKey, encoder)
+		return encoder, nil
+	}
+	encoder = &placeholderEncoder{cfg: cfg, cacheKey: cacheKey}
+	cfg.addEncoderToCache(cacheKey, encoder)
+	encoder, err := createEncoderOfType(cfg, typ)
+	for _, extension := range extensions {
+		encoder = extension.DecorateEncoder(typ, encoder)
+	}
+	cfg.addEncoderToCache(cacheKey, encoder)
+	return encoder, err
+}
+
+func createEncoderOfType(cfg *frozenConfig, typ reflect.Type) (ValEncoder, error) {
+	if typ == jsonRawMessageType {
+		return &jsonRawMessageCodec{}, nil
+	}
+	if typ == jsoniterRawMessageType {
+		return &jsoniterRawMessageCodec{}, nil
+	}
+	if typ.AssignableTo(jsonNumberType) {
+		return &jsonNumberCodec{}, nil
+	}
+	if typ.AssignableTo(jsoniterNumberType) {
+		return &jsoniterNumberCodec{}, nil
+	}
+	if typ.Implements(marshalerType) {
+		checkIsEmpty, err := createCheckIsEmpty(typ)
+		if err != nil {
+			return nil, err
+		}
+		templateInterface := reflect.New(typ).Elem().Interface()
+		var encoder ValEncoder = &marshalerEncoder{
+			templateInterface: extractInterface(templateInterface),
+			checkIsEmpty:      checkIsEmpty,
+		}
+		if typ.Kind() == reflect.Ptr {
+			encoder = &optionalEncoder{encoder}
+		}
+		return encoder, nil
+	}
+	if typ.Implements(textMarshalerType) {
+		checkIsEmpty, err := createCheckIsEmpty(typ)
+		if err != nil {
+			return nil, err
+		}
+		templateInterface := reflect.New(typ).Elem().Interface()
+		var encoder ValEncoder = &textMarshalerEncoder{
+			templateInterface: extractInterface(templateInterface),
+			checkIsEmpty:      checkIsEmpty,
+		}
+		if typ.Kind() == reflect.Ptr {
+			encoder = &optionalEncoder{encoder}
+		}
+		return encoder, nil
+	}
+	if typ.Kind() == reflect.Slice && typ.Elem().Kind() == reflect.Uint8 {
+		return &base64Codec{}, nil
+	}
+	if typ.Implements(anyType) {
+		return &anyCodec{}, nil
+	}
+	return createEncoderOfSimpleType(cfg, typ)
+}
+
+func createCheckIsEmpty(typ reflect.Type) (checkIsEmpty, error) {
+	kind := typ.Kind()
+	switch kind {
+	case reflect.String:
+		return &stringCodec{}, nil
+	case reflect.Int:
+		return &intCodec{}, nil
+	case reflect.Int8:
+		return &int8Codec{}, nil
+	case reflect.Int16:
+		return &int16Codec{}, nil
+	case reflect.Int32:
+		return &int32Codec{}, nil
+	case reflect.Int64:
+		return &int64Codec{}, nil
+	case reflect.Uint:
+		return &uintCodec{}, nil
+	case reflect.Uint8:
+		return &uint8Codec{}, nil
+	case reflect.Uint16:
+		return &uint16Codec{}, nil
+	case reflect.Uint32:
+		return &uint32Codec{}, nil
+	case reflect.Uintptr:
+		return &uintptrCodec{}, nil
+	case reflect.Uint64:
+		return &uint64Codec{}, nil
+	case reflect.Float32:
+		return &float32Codec{}, nil
+	case reflect.Float64:
+		return &float64Codec{}, nil
+	case reflect.Bool:
+		return &boolCodec{}, nil
+	case reflect.Interface:
+		if typ.NumMethod() == 0 {
+			return &emptyInterfaceCodec{}, nil
+		}
+		return &nonEmptyInterfaceCodec{}, nil
+	case reflect.Struct:
+		return &structEncoder{}, nil
+	case reflect.Array:
+		return &arrayEncoder{}, nil
+	case reflect.Slice:
+		return &sliceEncoder{}, nil
+	case reflect.Map:
+		return &mapEncoder{}, nil
+	case reflect.Ptr:
+		return &optionalEncoder{}, nil
+	default:
+		return nil, fmt.Errorf("unsupported type: %v", typ)
+	}
+}
+
+func createEncoderOfSimpleType(cfg *frozenConfig, typ reflect.Type) (ValEncoder, error) {
+	typeName := typ.String()
+	kind := typ.Kind()
+	switch kind {
+	case reflect.String:
+		if typeName != "string" {
+			return encoderOfType(cfg, reflect.TypeOf((*string)(nil)).Elem())
+		}
+		return &stringCodec{}, nil
+	case reflect.Int:
+		if typeName != "int" {
+			return encoderOfType(cfg, reflect.TypeOf((*int)(nil)).Elem())
+		}
+		return &intCodec{}, nil
+	case reflect.Int8:
+		if typeName != "int8" {
+			return encoderOfType(cfg, reflect.TypeOf((*int8)(nil)).Elem())
+		}
+		return &int8Codec{}, nil
+	case reflect.Int16:
+		if typeName != "int16" {
+			return encoderOfType(cfg, reflect.TypeOf((*int16)(nil)).Elem())
+		}
+		return &int16Codec{}, nil
+	case reflect.Int32:
+		if typeName != "int32" {
+			return encoderOfType(cfg, reflect.TypeOf((*int32)(nil)).Elem())
+		}
+		return &int32Codec{}, nil
+	case reflect.Int64:
+		if typeName != "int64" {
+			return encoderOfType(cfg, reflect.TypeOf((*int64)(nil)).Elem())
+		}
+		return &int64Codec{}, nil
+	case reflect.Uint:
+		if typeName != "uint" {
+			return encoderOfType(cfg, reflect.TypeOf((*uint)(nil)).Elem())
+		}
+		return &uintCodec{}, nil
+	case reflect.Uint8:
+		if typeName != "uint8" {
+			return encoderOfType(cfg, reflect.TypeOf((*uint8)(nil)).Elem())
+		}
+		return &uint8Codec{}, nil
+	case reflect.Uint16:
+		if typeName != "uint16" {
+			return encoderOfType(cfg, reflect.TypeOf((*uint16)(nil)).Elem())
+		}
+		return &uint16Codec{}, nil
+	case reflect.Uint32:
+		if typeName != "uint32" {
+			return encoderOfType(cfg, reflect.TypeOf((*uint32)(nil)).Elem())
+		}
+		return &uint32Codec{}, nil
+	case reflect.Uintptr:
+		if typeName != "uintptr" {
+			return encoderOfType(cfg, reflect.TypeOf((*uintptr)(nil)).Elem())
+		}
+		return &uintptrCodec{}, nil
+	case reflect.Uint64:
+		if typeName != "uint64" {
+			return encoderOfType(cfg, reflect.TypeOf((*uint64)(nil)).Elem())
+		}
+		return &uint64Codec{}, nil
+	case reflect.Float32:
+		if typeName != "float32" {
+			return encoderOfType(cfg, reflect.TypeOf((*float32)(nil)).Elem())
+		}
+		return &float32Codec{}, nil
+	case reflect.Float64:
+		if typeName != "float64" {
+			return encoderOfType(cfg, reflect.TypeOf((*float64)(nil)).Elem())
+		}
+		return &float64Codec{}, nil
+	case reflect.Bool:
+		if typeName != "bool" {
+			return encoderOfType(cfg, reflect.TypeOf((*bool)(nil)).Elem())
+		}
+		return &boolCodec{}, nil
+	case reflect.Interface:
+		if typ.NumMethod() == 0 {
+			return &emptyInterfaceCodec{}, nil
+		}
+		return &nonEmptyInterfaceCodec{}, nil
+	case reflect.Struct:
+		return prefix(fmt.Sprintf("[%s]", typeName)).addToEncoder(encoderOfStruct(cfg, typ))
+	case reflect.Array:
+		return prefix("[array]").addToEncoder(encoderOfArray(cfg, typ))
+	case reflect.Slice:
+		return prefix("[slice]").addToEncoder(encoderOfSlice(cfg, typ))
+	case reflect.Map:
+		return prefix("[map]").addToEncoder(encoderOfMap(cfg, typ))
+	case reflect.Ptr:
+		return prefix("[optional]").addToEncoder(encoderOfOptional(cfg, typ))
+	default:
+		return nil, fmt.Errorf("unsupported type: %v", typ)
+	}
+}
+
+func decoderOfOptional(cfg *frozenConfig, typ reflect.Type) (ValDecoder, error) {
+	elemType := typ.Elem()
+	decoder, err := decoderOfType(cfg, elemType)
+	if err != nil {
+		return nil, err
+	}
+	return &optionalDecoder{elemType, decoder}, nil
+}
+
+func encoderOfOptional(cfg *frozenConfig, typ reflect.Type) (ValEncoder, error) {
+	elemType := typ.Elem()
+	elemEncoder, err := encoderOfType(cfg, elemType)
+	if err != nil {
+		return nil, err
+	}
+	encoder := &optionalEncoder{elemEncoder}
+	if elemType.Kind() == reflect.Map {
+		encoder = &optionalEncoder{encoder}
+	}
+	return encoder, nil
+}
+
+func decoderOfMap(cfg *frozenConfig, typ reflect.Type) (ValDecoder, error) {
+	decoder, err := decoderOfType(cfg, typ.Elem())
+	if err != nil {
+		return nil, err
+	}
+	mapInterface := reflect.New(typ).Interface()
+	return &mapDecoder{typ, typ.Key(), typ.Elem(), decoder, extractInterface(mapInterface)}, nil
+}
+
+func extractInterface(val interface{}) emptyInterface {
+	return *((*emptyInterface)(unsafe.Pointer(&val)))
+}
+
+func encoderOfMap(cfg *frozenConfig, typ reflect.Type) (ValEncoder, error) {
+	elemType := typ.Elem()
+	encoder, err := encoderOfType(cfg, elemType)
+	if err != nil {
+		return nil, err
+	}
+	mapInterface := reflect.New(typ).Elem().Interface()
+	if cfg.sortMapKeys {
+		return &sortKeysMapEncoder{typ, elemType, encoder, *((*emptyInterface)(unsafe.Pointer(&mapInterface)))}, nil
+	}
+	return &mapEncoder{typ, elemType, encoder, *((*emptyInterface)(unsafe.Pointer(&mapInterface)))}, nil
+}

feature_reflect_array.go

@@ -0,0 +1,99 @@
+package jsoniter
+
+import (
+	"fmt"
+	"io"
+	"reflect"
+	"unsafe"
+)
+
+func decoderOfArray(cfg *frozenConfig, typ reflect.Type) (ValDecoder, error) {
+	decoder, err := decoderOfType(cfg, typ.Elem())
+	if err != nil {
+		return nil, err
+	}
+	return &arrayDecoder{typ, typ.Elem(), decoder}, nil
+}
+
+func encoderOfArray(cfg *frozenConfig, typ reflect.Type) (ValEncoder, error) {
+	encoder, err := encoderOfType(cfg, typ.Elem())
+	if err != nil {
+		return nil, err
+	}
+	if typ.Elem().Kind() == reflect.Map {
+		encoder = &optionalEncoder{encoder}
+	}
+	return &arrayEncoder{typ, typ.Elem(), encoder}, nil
+}
+
+type arrayEncoder struct {
+	arrayType   reflect.Type
+	elemType    reflect.Type
+	elemEncoder ValEncoder
+}
+
+func (encoder *arrayEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteArrayStart()
+	elemPtr := unsafe.Pointer(ptr)
+	encoder.elemEncoder.Encode(elemPtr, stream)
+	for i := 1; i < encoder.arrayType.Len(); i++ {
+		stream.WriteMore()
+		elemPtr = unsafe.Pointer(uintptr(elemPtr) + encoder.elemType.Size())
+		encoder.elemEncoder.Encode(unsafe.Pointer(elemPtr), stream)
+	}
+	stream.WriteArrayEnd()
+	if stream.Error != nil && stream.Error != io.EOF {
+		stream.Error = fmt.Errorf("%v: %s", encoder.arrayType, stream.Error.Error())
+	}
+}
+
+func (encoder *arrayEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	// special optimization for interface{}
+	e := (*emptyInterface)(unsafe.Pointer(&val))
+	if e.word == nil {
+		stream.WriteArrayStart()
+		stream.WriteNil()
+		stream.WriteArrayEnd()
+		return
+	}
+	elemType := encoder.arrayType.Elem()
+	if encoder.arrayType.Len() == 1 && (elemType.Kind() == reflect.Ptr || elemType.Kind() == reflect.Map) {
+		ptr := uintptr(e.word)
+		e.word = unsafe.Pointer(&ptr)
+	}
+	if reflect.TypeOf(val).Kind() == reflect.Ptr {
+		encoder.Encode(unsafe.Pointer(&e.word), stream)
+	} else {
+		encoder.Encode(e.word, stream)
+	}
+}
+
+func (encoder *arrayEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return false
+}
+
+type arrayDecoder struct {
+	arrayType   reflect.Type
+	elemType    reflect.Type
+	elemDecoder ValDecoder
+}
+
+func (decoder *arrayDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	decoder.doDecode(ptr, iter)
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.arrayType, iter.Error.Error())
+	}
+}
+
+func (decoder *arrayDecoder) doDecode(ptr unsafe.Pointer, iter *Iterator) {
+	offset := uintptr(0)
+	iter.ReadArrayCB(func(iter *Iterator) bool {
+		if offset < decoder.arrayType.Size() {
+			decoder.elemDecoder.Decode(unsafe.Pointer(uintptr(ptr)+offset), iter)
+			offset += decoder.elemType.Size()
+		} else {
+			iter.Skip()
+		}
+		return true
+	})
+}

feature_reflect_extension.go

@@ -0,0 +1,413 @@
+package jsoniter
+
+import (
+	"fmt"
+	"reflect"
+	"sort"
+	"strings"
+	"unicode"
+	"unsafe"
+)
+
+var typeDecoders = map[string]ValDecoder{}
+var fieldDecoders = map[string]ValDecoder{}
+var typeEncoders = map[string]ValEncoder{}
+var fieldEncoders = map[string]ValEncoder{}
+var extensions = []Extension{}
+
+// StructDescriptor describe how should we encode/decode the struct
+type StructDescriptor struct {
+	onePtrEmbedded     bool
+	onePtrOptimization bool
+	Type               reflect.Type
+	Fields             []*Binding
+}
+
+// GetField get one field from the descriptor by its name.
+// Can not use map here to keep field orders.
+func (structDescriptor *StructDescriptor) GetField(fieldName string) *Binding {
+	for _, binding := range structDescriptor.Fields {
+		if binding.Field.Name == fieldName {
+			return binding
+		}
+	}
+	return nil
+}
+
+// Binding describe how should we encode/decode the struct field
+type Binding struct {
+	levels    []int
+	Field     *reflect.StructField
+	FromNames []string
+	ToNames   []string
+	Encoder   ValEncoder
+	Decoder   ValDecoder
+}
+
+// Extension the one for all SPI. Customize encoding/decoding by specifying alternate encoder/decoder.
+// Can also rename fields by UpdateStructDescriptor.
+type Extension interface {
+	UpdateStructDescriptor(structDescriptor *StructDescriptor)
+	CreateDecoder(typ reflect.Type) ValDecoder
+	CreateEncoder(typ reflect.Type) ValEncoder
+	DecorateDecoder(typ reflect.Type, decoder ValDecoder) ValDecoder
+	DecorateEncoder(typ reflect.Type, encoder ValEncoder) ValEncoder
+}
+
+// DummyExtension embed this type get dummy implementation for all methods of Extension
+type DummyExtension struct {
+}
+
+// UpdateStructDescriptor No-op
+func (extension *DummyExtension) UpdateStructDescriptor(structDescriptor *StructDescriptor) {
+}
+
+// CreateDecoder No-op
+func (extension *DummyExtension) CreateDecoder(typ reflect.Type) ValDecoder {
+	return nil
+}
+
+// CreateEncoder No-op
+func (extension *DummyExtension) CreateEncoder(typ reflect.Type) ValEncoder {
+	return nil
+}
+
+// DecorateDecoder No-op
+func (extension *DummyExtension) DecorateDecoder(typ reflect.Type, decoder ValDecoder) ValDecoder {
+	return decoder
+}
+
+// DecorateEncoder No-op
+func (extension *DummyExtension) DecorateEncoder(typ reflect.Type, encoder ValEncoder) ValEncoder {
+	return encoder
+}
+
+type funcDecoder struct {
+	fun DecoderFunc
+}
+
+func (decoder *funcDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	decoder.fun(ptr, iter)
+}
+
+type funcEncoder struct {
+	fun         EncoderFunc
+	isEmptyFunc func(ptr unsafe.Pointer) bool
+}
+
+func (encoder *funcEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	encoder.fun(ptr, stream)
+}
+
+func (encoder *funcEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *funcEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	if encoder.isEmptyFunc == nil {
+		return false
+	}
+	return encoder.isEmptyFunc(ptr)
+}
+
+// DecoderFunc the function form of TypeDecoder
+type DecoderFunc func(ptr unsafe.Pointer, iter *Iterator)
+
+// EncoderFunc the function form of TypeEncoder
+type EncoderFunc func(ptr unsafe.Pointer, stream *Stream)
+
+// RegisterTypeDecoderFunc register TypeDecoder for a type with function
+func RegisterTypeDecoderFunc(typ string, fun DecoderFunc) {
+	typeDecoders[typ] = &funcDecoder{fun}
+}
+
+// RegisterTypeDecoder register TypeDecoder for a typ
+func RegisterTypeDecoder(typ string, decoder ValDecoder) {
+	typeDecoders[typ] = decoder
+}
+
+// RegisterFieldDecoderFunc register TypeDecoder for a struct field with function
+func RegisterFieldDecoderFunc(typ string, field string, fun DecoderFunc) {
+	RegisterFieldDecoder(typ, field, &funcDecoder{fun})
+}
+
+// RegisterFieldDecoder register TypeDecoder for a struct field
+func RegisterFieldDecoder(typ string, field string, decoder ValDecoder) {
+	fieldDecoders[fmt.Sprintf("%s/%s", typ, field)] = decoder
+}
+
+// RegisterTypeEncoderFunc register TypeEncoder for a type with encode/isEmpty function
+func RegisterTypeEncoderFunc(typ string, fun EncoderFunc, isEmptyFunc func(unsafe.Pointer) bool) {
+	typeEncoders[typ] = &funcEncoder{fun, isEmptyFunc}
+}
+
+// RegisterTypeEncoder register TypeEncoder for a type
+func RegisterTypeEncoder(typ string, encoder ValEncoder) {
+	typeEncoders[typ] = encoder
+}
+
+// RegisterFieldEncoderFunc register TypeEncoder for a struct field with encode/isEmpty function
+func RegisterFieldEncoderFunc(typ string, field string, fun EncoderFunc, isEmptyFunc func(unsafe.Pointer) bool) {
+	RegisterFieldEncoder(typ, field, &funcEncoder{fun, isEmptyFunc})
+}
+
+// RegisterFieldEncoder register TypeEncoder for a struct field
+func RegisterFieldEncoder(typ string, field string, encoder ValEncoder) {
+	fieldEncoders[fmt.Sprintf("%s/%s", typ, field)] = encoder
+}
+
+// RegisterExtension register extension
+func RegisterExtension(extension Extension) {
+	extensions = append(extensions, extension)
+}
+
+func getTypeDecoderFromExtension(typ reflect.Type) ValDecoder {
+	decoder := _getTypeDecoderFromExtension(typ)
+	if decoder != nil {
+		for _, extension := range extensions {
+			decoder = extension.DecorateDecoder(typ, decoder)
+		}
+	}
+	return decoder
+}
+func _getTypeDecoderFromExtension(typ reflect.Type) ValDecoder {
+	for _, extension := range extensions {
+		decoder := extension.CreateDecoder(typ)
+		if decoder != nil {
+			return decoder
+		}
+	}
+	typeName := typ.String()
+	decoder := typeDecoders[typeName]
+	if decoder != nil {
+		return decoder
+	}
+	if typ.Kind() == reflect.Ptr {
+		decoder := typeDecoders[typ.Elem().String()]
+		if decoder != nil {
+			return &optionalDecoder{typ.Elem(), decoder}
+		}
+	}
+	return nil
+}
+
+func getTypeEncoderFromExtension(typ reflect.Type) ValEncoder {
+	encoder := _getTypeEncoderFromExtension(typ)
+	if encoder != nil {
+		for _, extension := range extensions {
+			encoder = extension.DecorateEncoder(typ, encoder)
+		}
+	}
+	return encoder
+}
+
+func _getTypeEncoderFromExtension(typ reflect.Type) ValEncoder {
+	for _, extension := range extensions {
+		encoder := extension.CreateEncoder(typ)
+		if encoder != nil {
+			return encoder
+		}
+	}
+	typeName := typ.String()
+	encoder := typeEncoders[typeName]
+	if encoder != nil {
+		return encoder
+	}
+	if typ.Kind() == reflect.Ptr {
+		encoder := typeEncoders[typ.Elem().String()]
+		if encoder != nil {
+			return &optionalEncoder{encoder}
+		}
+	}
+	return nil
+}
+
+func describeStruct(cfg *frozenConfig, typ reflect.Type) (*StructDescriptor, error) {
+	embeddedBindings := []*Binding{}
+	bindings := []*Binding{}
+	for i := 0; i < typ.NumField(); i++ {
+		field := typ.Field(i)
+		tag := field.Tag.Get(cfg.getTagKey())
+		tagParts := strings.Split(tag, ",")
+		if tag == "-" {
+			continue
+		}
+		if field.Anonymous && (tag == "" || tagParts[0] == "") {
+			if field.Type.Kind() == reflect.Struct {
+				structDescriptor, err := describeStruct(cfg, field.Type)
+				if err != nil {
+					return nil, err
+				}
+				for _, binding := range structDescriptor.Fields {
+					binding.levels = append([]int{i}, binding.levels...)
+					omitempty := binding.Encoder.(*structFieldEncoder).omitempty
+					binding.Encoder = &structFieldEncoder{&field, binding.Encoder, omitempty}
+					binding.Decoder = &structFieldDecoder{&field, binding.Decoder}
+					embeddedBindings = append(embeddedBindings, binding)
+				}
+				continue
+			} else if field.Type.Kind() == reflect.Ptr && field.Type.Elem().Kind() == reflect.Struct {
+				structDescriptor, err := describeStruct(cfg, field.Type.Elem())
+				if err != nil {
+					return nil, err
+				}
+				for _, binding := range structDescriptor.Fields {
+					binding.levels = append([]int{i}, binding.levels...)
+					omitempty := binding.Encoder.(*structFieldEncoder).omitempty
+					binding.Encoder = &optionalEncoder{binding.Encoder}
+					binding.Encoder = &structFieldEncoder{&field, binding.Encoder, omitempty}
+					binding.Decoder = &deferenceDecoder{field.Type.Elem(), binding.Decoder}
+					binding.Decoder = &structFieldDecoder{&field, binding.Decoder}
+					embeddedBindings = append(embeddedBindings, binding)
+				}
+				continue
+			}
+		}
+		fieldNames := calcFieldNames(field.Name, tagParts[0], tag)
+		fieldCacheKey := fmt.Sprintf("%s/%s", typ.String(), field.Name)
+		decoder := fieldDecoders[fieldCacheKey]
+		if decoder == nil {
+			var err error
+			decoder, err = decoderOfType(cfg, field.Type)
+			if err != nil {
+				return nil, err
+			}
+		}
+		encoder := fieldEncoders[fieldCacheKey]
+		if encoder == nil {
+			var err error
+			encoder, err = encoderOfType(cfg, field.Type)
+			if err != nil {
+				return nil, err
+			}
+			// map is stored as pointer in the struct
+			if field.Type.Kind() == reflect.Map {
+				encoder = &optionalEncoder{encoder}
+			}
+		}
+		binding := &Binding{
+			Field:     &field,
+			FromNames: fieldNames,
+			ToNames:   fieldNames,
+			Decoder:   decoder,
+			Encoder:   encoder,
+		}
+		binding.levels = []int{i}
+		bindings = append(bindings, binding)
+	}
+	return createStructDescriptor(cfg, typ, bindings, embeddedBindings), nil
+}
+func createStructDescriptor(cfg *frozenConfig, typ reflect.Type, bindings []*Binding, embeddedBindings []*Binding) *StructDescriptor {
+	onePtrEmbedded := false
+	onePtrOptimization := false
+	if typ.NumField() == 1 {
+		firstField := typ.Field(0)
+		switch firstField.Type.Kind() {
+		case reflect.Ptr:
+			if firstField.Anonymous && firstField.Type.Elem().Kind() == reflect.Struct {
+				onePtrEmbedded = true
+			}
+			fallthrough
+		case reflect.Map:
+			onePtrOptimization = true
+		case reflect.Struct:
+			onePtrOptimization = isStructOnePtr(firstField.Type)
+		}
+	}
+	structDescriptor := &StructDescriptor{
+		onePtrEmbedded:     onePtrEmbedded,
+		onePtrOptimization: onePtrOptimization,
+		Type:               typ,
+		Fields:             bindings,
+	}
+	for _, extension := range extensions {
+		extension.UpdateStructDescriptor(structDescriptor)
+	}
+	processTags(structDescriptor, cfg)
+	// merge normal & embedded bindings & sort with original order
+	allBindings := sortableBindings(append(embeddedBindings, structDescriptor.Fields...))
+	sort.Sort(allBindings)
+	structDescriptor.Fields = allBindings
+	return structDescriptor
+}
+
+func isStructOnePtr(typ reflect.Type) bool {
+	if typ.NumField() == 1 {
+		firstField := typ.Field(0)
+		switch firstField.Type.Kind() {
+		case reflect.Ptr:
+			return true
+		case reflect.Map:
+			return true
+		case reflect.Struct:
+			return isStructOnePtr(firstField.Type)
+		}
+	}
+	return false
+}
+
+type sortableBindings []*Binding
+
+func (bindings sortableBindings) Len() int {
+	return len(bindings)
+}
+
+func (bindings sortableBindings) Less(i, j int) bool {
+	left := bindings[i].levels
+	right := bindings[j].levels
+	k := 0
+	for {
+		if left[k] < right[k] {
+			return true
+		} else if left[k] > right[k] {
+			return false
+		}
+		k++
+	}
+}
+
+func (bindings sortableBindings) Swap(i, j int) {
+	bindings[i], bindings[j] = bindings[j], bindings[i]
+}
+
+func processTags(structDescriptor *StructDescriptor, cfg *frozenConfig) {
+	for _, binding := range structDescriptor.Fields {
+		shouldOmitEmpty := false
+		tagParts := strings.Split(binding.Field.Tag.Get(cfg.getTagKey()), ",")
+		for _, tagPart := range tagParts[1:] {
+			if tagPart == "omitempty" {
+				shouldOmitEmpty = true
+			} else if tagPart == "string" {
+				if binding.Field.Type.Kind() == reflect.String {
+					binding.Decoder = &stringModeStringDecoder{binding.Decoder, cfg}
+					binding.Encoder = &stringModeStringEncoder{binding.Encoder, cfg}
+				} else {
+					binding.Decoder = &stringModeNumberDecoder{binding.Decoder}
+					binding.Encoder = &stringModeNumberEncoder{binding.Encoder}
+				}
+			}
+		}
+		binding.Decoder = &structFieldDecoder{binding.Field, binding.Decoder}
+		binding.Encoder = &structFieldEncoder{binding.Field, binding.Encoder, shouldOmitEmpty}
+	}
+}
+
+func calcFieldNames(originalFieldName string, tagProvidedFieldName string, wholeTag string) []string {
+	// ignore?
+	if wholeTag == "-" {
+		return []string{}
+	}
+	// rename?
+	var fieldNames []string
+	if tagProvidedFieldName == "" {
+		fieldNames = []string{originalFieldName}
+	} else {
+		fieldNames = []string{tagProvidedFieldName}
+	}
+	// private?
+	isNotExported := unicode.IsLower(rune(originalFieldName[0]))
+	if isNotExported {
+		fieldNames = []string{}
+	}
+	return fieldNames
+}

feature_reflect_map.go

@@ -0,0 +1,244 @@
+package jsoniter
+
+import (
+	"encoding"
+	"encoding/json"
+	"reflect"
+	"sort"
+	"strconv"
+	"unsafe"
+)
+
+type mapDecoder struct {
+	mapType      reflect.Type
+	keyType      reflect.Type
+	elemType     reflect.Type
+	elemDecoder  ValDecoder
+	mapInterface emptyInterface
+}
+
+func (decoder *mapDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	// dark magic to cast unsafe.Pointer back to interface{} using reflect.Type
+	mapInterface := decoder.mapInterface
+	mapInterface.word = ptr
+	realInterface := (*interface{})(unsafe.Pointer(&mapInterface))
+	realVal := reflect.ValueOf(*realInterface).Elem()
+	if iter.ReadNil() {
+		realVal.Set(reflect.Zero(decoder.mapType))
+		return
+	}
+	if realVal.IsNil() {
+		realVal.Set(reflect.MakeMap(realVal.Type()))
+	}
+	iter.ReadMapCB(func(iter *Iterator, keyStr string) bool {
+		elem := reflect.New(decoder.elemType)
+		decoder.elemDecoder.Decode(unsafe.Pointer(elem.Pointer()), iter)
+		// to put into map, we have to use reflection
+		keyType := decoder.keyType
+		// TODO: remove this from loop
+		switch {
+		case keyType.Kind() == reflect.String:
+			realVal.SetMapIndex(reflect.ValueOf(keyStr).Convert(keyType), elem.Elem())
+			return true
+		case keyType.Implements(textUnmarshalerType):
+			textUnmarshaler := reflect.New(keyType.Elem()).Interface().(encoding.TextUnmarshaler)
+			err := textUnmarshaler.UnmarshalText([]byte(keyStr))
+			if err != nil {
+				iter.ReportError("read map key as TextUnmarshaler", err.Error())
+				return false
+			}
+			realVal.SetMapIndex(reflect.ValueOf(textUnmarshaler), elem.Elem())
+			return true
+		case reflect.PtrTo(keyType).Implements(textUnmarshalerType):
+			textUnmarshaler := reflect.New(keyType).Interface().(encoding.TextUnmarshaler)
+			err := textUnmarshaler.UnmarshalText([]byte(keyStr))
+			if err != nil {
+				iter.ReportError("read map key as TextUnmarshaler", err.Error())
+				return false
+			}
+			realVal.SetMapIndex(reflect.ValueOf(textUnmarshaler).Elem(), elem.Elem())
+			return true
+		default:
+			switch keyType.Kind() {
+			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+				n, err := strconv.ParseInt(keyStr, 10, 64)
+				if err != nil || reflect.Zero(keyType).OverflowInt(n) {
+					iter.ReportError("read map key as int64", "read int64 failed")
+					return false
+				}
+				realVal.SetMapIndex(reflect.ValueOf(n).Convert(keyType), elem.Elem())
+				return true
+			case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+				n, err := strconv.ParseUint(keyStr, 10, 64)
+				if err != nil || reflect.Zero(keyType).OverflowUint(n) {
+					iter.ReportError("read map key as uint64", "read uint64 failed")
+					return false
+				}
+				realVal.SetMapIndex(reflect.ValueOf(n).Convert(keyType), elem.Elem())
+				return true
+			}
+		}
+		iter.ReportError("read map key", "unexpected map key type "+keyType.String())
+		return true
+	})
+}
+
+type mapEncoder struct {
+	mapType      reflect.Type
+	elemType     reflect.Type
+	elemEncoder  ValEncoder
+	mapInterface emptyInterface
+}
+
+func (encoder *mapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	mapInterface := encoder.mapInterface
+	mapInterface.word = ptr
+	realInterface := (*interface{})(unsafe.Pointer(&mapInterface))
+	realVal := reflect.ValueOf(*realInterface)
+	stream.WriteObjectStart()
+	for i, key := range realVal.MapKeys() {
+		if i != 0 {
+			stream.WriteMore()
+		}
+		encodeMapKey(key, stream)
+		if stream.indention > 0 {
+			stream.writeTwoBytes(byte(':'), byte(' '))
+		} else {
+			stream.writeByte(':')
+		}
+		val := realVal.MapIndex(key).Interface()
+		encoder.elemEncoder.EncodeInterface(val, stream)
+	}
+	stream.WriteObjectEnd()
+}
+
+func encodeMapKey(key reflect.Value, stream *Stream) {
+	if key.Kind() == reflect.String {
+		stream.WriteString(key.String())
+		return
+	}
+	if tm, ok := key.Interface().(encoding.TextMarshaler); ok {
+		buf, err := tm.MarshalText()
+		if err != nil {
+			stream.Error = err
+			return
+		}
+		stream.writeByte('"')
+		stream.Write(buf)
+		stream.writeByte('"')
+		return
+	}
+	switch key.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		stream.writeByte('"')
+		stream.WriteInt64(key.Int())
+		stream.writeByte('"')
+		return
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		stream.writeByte('"')
+		stream.WriteUint64(key.Uint())
+		stream.writeByte('"')
+		return
+	}
+	stream.Error = &json.UnsupportedTypeError{Type: key.Type()}
+}
+
+func (encoder *mapEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *mapEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	mapInterface := encoder.mapInterface
+	mapInterface.word = ptr
+	realInterface := (*interface{})(unsafe.Pointer(&mapInterface))
+	realVal := reflect.ValueOf(*realInterface)
+	return realVal.Len() == 0
+}
+
+type sortKeysMapEncoder struct {
+	mapType      reflect.Type
+	elemType     reflect.Type
+	elemEncoder  ValEncoder
+	mapInterface emptyInterface
+}
+
+func (encoder *sortKeysMapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	mapInterface := encoder.mapInterface
+	mapInterface.word = ptr
+	realInterface := (*interface{})(unsafe.Pointer(&mapInterface))
+	realVal := reflect.ValueOf(*realInterface)
+
+	// Extract and sort the keys.
+	keys := realVal.MapKeys()
+	sv := stringValues(make([]reflectWithString, len(keys)))
+	for i, v := range keys {
+		sv[i].v = v
+		if err := sv[i].resolve(); err != nil {
+			stream.Error = err
+			return
+		}
+	}
+	sort.Sort(sv)
+
+	stream.WriteObjectStart()
+	for i, key := range sv {
+		if i != 0 {
+			stream.WriteMore()
+		}
+		stream.WriteVal(key.s) // might need html escape, so can not WriteString directly
+		if stream.indention > 0 {
+			stream.writeTwoBytes(byte(':'), byte(' '))
+		} else {
+			stream.writeByte(':')
+		}
+		val := realVal.MapIndex(key.v).Interface()
+		encoder.elemEncoder.EncodeInterface(val, stream)
+	}
+	stream.WriteObjectEnd()
+}
+
+// stringValues is a slice of reflect.Value holding *reflect.StringValue.
+// It implements the methods to sort by string.
+type stringValues []reflectWithString
+
+type reflectWithString struct {
+	v reflect.Value
+	s string
+}
+
+func (w *reflectWithString) resolve() error {
+	if w.v.Kind() == reflect.String {
+		w.s = w.v.String()
+		return nil
+	}
+	if tm, ok := w.v.Interface().(encoding.TextMarshaler); ok {
+		buf, err := tm.MarshalText()
+		w.s = string(buf)
+		return err
+	}
+	switch w.v.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		w.s = strconv.FormatInt(w.v.Int(), 10)
+		return nil
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		w.s = strconv.FormatUint(w.v.Uint(), 10)
+		return nil
+	}
+	return &json.UnsupportedTypeError{Type: w.v.Type()}
+}
+
+func (sv stringValues) Len() int           { return len(sv) }
+func (sv stringValues) Swap(i, j int)      { sv[i], sv[j] = sv[j], sv[i] }
+func (sv stringValues) Less(i, j int) bool { return sv[i].s < sv[j].s }
+
+func (encoder *sortKeysMapEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *sortKeysMapEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	mapInterface := encoder.mapInterface
+	mapInterface.word = ptr
+	realInterface := (*interface{})(unsafe.Pointer(&mapInterface))
+	realVal := reflect.ValueOf(*realInterface)
+	return realVal.Len() == 0
+}

feature_reflect_native.go

@@ -0,0 +1,672 @@
+package jsoniter
+
+import (
+	"encoding"
+	"encoding/base64"
+	"encoding/json"
+	"unsafe"
+)
+
+type stringCodec struct {
+}
+
+func (codec *stringCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*string)(ptr)) = iter.ReadString()
+}
+
+func (codec *stringCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	str := *((*string)(ptr))
+	stream.WriteString(str)
+}
+
+func (codec *stringCodec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *stringCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*string)(ptr)) == ""
+}
+
+type intCodec struct {
+}
+
+func (codec *intCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*int)(ptr)) = iter.ReadInt()
+}
+
+func (codec *intCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteInt(*((*int)(ptr)))
+}
+
+func (codec *intCodec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *intCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*int)(ptr)) == 0
+}
+
+type uintptrCodec struct {
+}
+
+func (codec *uintptrCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*uintptr)(ptr)) = uintptr(iter.ReadUint64())
+}
+
+func (codec *uintptrCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteUint64(uint64(*((*uintptr)(ptr))))
+}
+
+func (codec *uintptrCodec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *uintptrCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*uintptr)(ptr)) == 0
+}
+
+type int8Codec struct {
+}
+
+func (codec *int8Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*int8)(ptr)) = iter.ReadInt8()
+}
+
+func (codec *int8Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteInt8(*((*int8)(ptr)))
+}
+
+func (codec *int8Codec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *int8Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*int8)(ptr)) == 0
+}
+
+type int16Codec struct {
+}
+
+func (codec *int16Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*int16)(ptr)) = iter.ReadInt16()
+}
+
+func (codec *int16Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteInt16(*((*int16)(ptr)))
+}
+
+func (codec *int16Codec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *int16Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*int16)(ptr)) == 0
+}
+
+type int32Codec struct {
+}
+
+func (codec *int32Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*int32)(ptr)) = iter.ReadInt32()
+}
+
+func (codec *int32Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteInt32(*((*int32)(ptr)))
+}
+
+func (codec *int32Codec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *int32Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*int32)(ptr)) == 0
+}
+
+type int64Codec struct {
+}
+
+func (codec *int64Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*int64)(ptr)) = iter.ReadInt64()
+}
+
+func (codec *int64Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteInt64(*((*int64)(ptr)))
+}
+
+func (codec *int64Codec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *int64Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*int64)(ptr)) == 0
+}
+
+type uintCodec struct {
+}
+
+func (codec *uintCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*uint)(ptr)) = iter.ReadUint()
+}
+
+func (codec *uintCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteUint(*((*uint)(ptr)))
+}
+
+func (codec *uintCodec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *uintCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*uint)(ptr)) == 0
+}
+
+type uint8Codec struct {
+}
+
+func (codec *uint8Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*uint8)(ptr)) = iter.ReadUint8()
+}
+
+func (codec *uint8Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteUint8(*((*uint8)(ptr)))
+}
+
+func (codec *uint8Codec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *uint8Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*uint8)(ptr)) == 0
+}
+
+type uint16Codec struct {
+}
+
+func (codec *uint16Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*uint16)(ptr)) = iter.ReadUint16()
+}
+
+func (codec *uint16Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteUint16(*((*uint16)(ptr)))
+}
+
+func (codec *uint16Codec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *uint16Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*uint16)(ptr)) == 0
+}
+
+type uint32Codec struct {
+}
+
+func (codec *uint32Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*uint32)(ptr)) = iter.ReadUint32()
+}
+
+func (codec *uint32Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteUint32(*((*uint32)(ptr)))
+}
+
+func (codec *uint32Codec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *uint32Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*uint32)(ptr)) == 0
+}
+
+type uint64Codec struct {
+}
+
+func (codec *uint64Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*uint64)(ptr)) = iter.ReadUint64()
+}
+
+func (codec *uint64Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteUint64(*((*uint64)(ptr)))
+}
+
+func (codec *uint64Codec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *uint64Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*uint64)(ptr)) == 0
+}
+
+type float32Codec struct {
+}
+
+func (codec *float32Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*float32)(ptr)) = iter.ReadFloat32()
+}
+
+func (codec *float32Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteFloat32(*((*float32)(ptr)))
+}
+
+func (codec *float32Codec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *float32Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*float32)(ptr)) == 0
+}
+
+type float64Codec struct {
+}
+
+func (codec *float64Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*float64)(ptr)) = iter.ReadFloat64()
+}
+
+func (codec *float64Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteFloat64(*((*float64)(ptr)))
+}
+
+func (codec *float64Codec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *float64Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return *((*float64)(ptr)) == 0
+}
+
+type boolCodec struct {
+}
+
+func (codec *boolCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*bool)(ptr)) = iter.ReadBool()
+}
+
+func (codec *boolCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteBool(*((*bool)(ptr)))
+}
+
+func (codec *boolCodec) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, codec)
+}
+
+func (codec *boolCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return !(*((*bool)(ptr)))
+}
+
+type emptyInterfaceCodec struct {
+}
+
+func (codec *emptyInterfaceCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*interface{})(ptr)) = iter.Read()
+}
+
+func (codec *emptyInterfaceCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteVal(*((*interface{})(ptr)))
+}
+
+func (codec *emptyInterfaceCodec) EncodeInterface(val interface{}, stream *Stream) {
+	stream.WriteVal(val)
+}
+
+func (codec *emptyInterfaceCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return ptr == nil
+}
+
+type nonEmptyInterfaceCodec struct {
+}
+
+func (codec *nonEmptyInterfaceCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	nonEmptyInterface := (*nonEmptyInterface)(ptr)
+	if nonEmptyInterface.itab == nil {
+		iter.ReportError("read non-empty interface", "do not know which concrete type to decode to")
+		return
+	}
+	var i interface{}
+	e := (*emptyInterface)(unsafe.Pointer(&i))
+	e.typ = nonEmptyInterface.itab.typ
+	e.word = nonEmptyInterface.word
+	iter.ReadVal(&i)
+	nonEmptyInterface.word = e.word
+}
+
+func (codec *nonEmptyInterfaceCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	nonEmptyInterface := (*nonEmptyInterface)(ptr)
+	var i interface{}
+	e := (*emptyInterface)(unsafe.Pointer(&i))
+	e.typ = nonEmptyInterface.itab.typ
+	e.word = nonEmptyInterface.word
+	stream.WriteVal(i)
+}
+
+func (codec *nonEmptyInterfaceCodec) EncodeInterface(val interface{}, stream *Stream) {
+	stream.WriteVal(val)
+}
+
+func (codec *nonEmptyInterfaceCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	nonEmptyInterface := (*nonEmptyInterface)(ptr)
+	return nonEmptyInterface.word == nil
+}
+
+type anyCodec struct {
+}
+
+func (codec *anyCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*Any)(ptr)) = iter.ReadAny()
+}
+
+func (codec *anyCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	(*((*Any)(ptr))).WriteTo(stream)
+}
+
+func (codec *anyCodec) EncodeInterface(val interface{}, stream *Stream) {
+	(val.(Any)).WriteTo(stream)
+}
+
+func (codec *anyCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return (*((*Any)(ptr))).Size() == 0
+}
+
+type jsonNumberCodec struct {
+}
+
+func (codec *jsonNumberCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*json.Number)(ptr)) = json.Number([]byte(iter.readNumberAsString()))
+}
+
+func (codec *jsonNumberCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteRaw(string(*((*json.Number)(ptr))))
+}
+
+func (codec *jsonNumberCodec) EncodeInterface(val interface{}, stream *Stream) {
+	stream.WriteRaw(string(val.(json.Number)))
+}
+
+func (codec *jsonNumberCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return len(*((*json.Number)(ptr))) == 0
+}
+
+type jsoniterNumberCodec struct {
+}
+
+func (codec *jsoniterNumberCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*Number)(ptr)) = Number([]byte(iter.readNumberAsString()))
+}
+
+func (codec *jsoniterNumberCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteRaw(string(*((*Number)(ptr))))
+}
+
+func (codec *jsoniterNumberCodec) EncodeInterface(val interface{}, stream *Stream) {
+	stream.WriteRaw(string(val.(Number)))
+}
+
+func (codec *jsoniterNumberCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return len(*((*Number)(ptr))) == 0
+}
+
+type jsonRawMessageCodec struct {
+}
+
+func (codec *jsonRawMessageCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*json.RawMessage)(ptr)) = json.RawMessage(iter.SkipAndReturnBytes())
+}
+
+func (codec *jsonRawMessageCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteRaw(string(*((*json.RawMessage)(ptr))))
+}
+
+func (codec *jsonRawMessageCodec) EncodeInterface(val interface{}, stream *Stream) {
+	stream.WriteRaw(string(val.(json.RawMessage)))
+}
+
+func (codec *jsonRawMessageCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return len(*((*json.RawMessage)(ptr))) == 0
+}
+
+type jsoniterRawMessageCodec struct {
+}
+
+func (codec *jsoniterRawMessageCodec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	*((*RawMessage)(ptr)) = RawMessage(iter.SkipAndReturnBytes())
+}
+
+func (codec *jsoniterRawMessageCodec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteRaw(string(*((*RawMessage)(ptr))))
+}
+
+func (codec *jsoniterRawMessageCodec) EncodeInterface(val interface{}, stream *Stream) {
+	stream.WriteRaw(string(val.(RawMessage)))
+}
+
+func (codec *jsoniterRawMessageCodec) IsEmpty(ptr unsafe.Pointer) bool {
+	return len(*((*RawMessage)(ptr))) == 0
+}
+
+type base64Codec struct {
+	sliceDecoder ValDecoder
+}
+
+func (codec *base64Codec) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if iter.ReadNil() {
+		ptrSlice := (*sliceHeader)(ptr)
+		ptrSlice.Len = 0
+		ptrSlice.Cap = 0
+		ptrSlice.Data = nil
+		return
+	}
+	switch iter.WhatIsNext() {
+	case StringValue:
+		encoding := base64.StdEncoding
+		src := iter.SkipAndReturnBytes()
+		src = src[1 : len(src)-1]
+		decodedLen := encoding.DecodedLen(len(src))
+		dst := make([]byte, decodedLen)
+		len, err := encoding.Decode(dst, src)
+		if err != nil {
+			iter.ReportError("decode base64", err.Error())
+		} else {
+			dst = dst[:len]
+			dstSlice := (*sliceHeader)(unsafe.Pointer(&dst))
+			ptrSlice := (*sliceHeader)(ptr)
+			ptrSlice.Data = dstSlice.Data
+			ptrSlice.Cap = dstSlice.Cap
+			ptrSlice.Len = dstSlice.Len
+		}
+	case ArrayValue:
+		codec.sliceDecoder.Decode(ptr, iter)
+	default:
+		iter.ReportError("base64Codec", "invalid input")
+	}
+}
+
+func (codec *base64Codec) Encode(ptr unsafe.Pointer, stream *Stream) {
+	src := *((*[]byte)(ptr))
+	if len(src) == 0 {
+		stream.WriteNil()
+		return
+	}
+	encoding := base64.StdEncoding
+	stream.writeByte('"')
+	toGrow := encoding.EncodedLen(len(src))
+	stream.ensure(toGrow)
+	encoding.Encode(stream.buf[stream.n:], src)
+	stream.n += toGrow
+	stream.writeByte('"')
+}
+
+func (codec *base64Codec) EncodeInterface(val interface{}, stream *Stream) {
+	ptr := extractInterface(val).word
+	src := *((*[]byte)(ptr))
+	if len(src) == 0 {
+		stream.WriteNil()
+		return
+	}
+	encoding := base64.StdEncoding
+	stream.writeByte('"')
+	toGrow := encoding.EncodedLen(len(src))
+	stream.ensure(toGrow)
+	encoding.Encode(stream.buf[stream.n:], src)
+	stream.n += toGrow
+	stream.writeByte('"')
+}
+
+func (codec *base64Codec) IsEmpty(ptr unsafe.Pointer) bool {
+	return len(*((*[]byte)(ptr))) == 0
+}
+
+type stringModeNumberDecoder struct {
+	elemDecoder ValDecoder
+}
+
+func (decoder *stringModeNumberDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	c := iter.nextToken()
+	if c != '"' {
+		iter.ReportError("stringModeNumberDecoder", `expect "`)
+		return
+	}
+	decoder.elemDecoder.Decode(ptr, iter)
+	if iter.Error != nil {
+		return
+	}
+	c = iter.readByte()
+	if c != '"' {
+		iter.ReportError("stringModeNumberDecoder", `expect "`)
+		return
+	}
+}
+
+type stringModeStringDecoder struct {
+	elemDecoder ValDecoder
+	cfg         *frozenConfig
+}
+
+func (decoder *stringModeStringDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	decoder.elemDecoder.Decode(ptr, iter)
+	str := *((*string)(ptr))
+	tempIter := decoder.cfg.BorrowIterator([]byte(str))
+	defer decoder.cfg.ReturnIterator(tempIter)
+	*((*string)(ptr)) = tempIter.ReadString()
+}
+
+type stringModeNumberEncoder struct {
+	elemEncoder ValEncoder
+}
+
+func (encoder *stringModeNumberEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.writeByte('"')
+	encoder.elemEncoder.Encode(ptr, stream)
+	stream.writeByte('"')
+}
+
+func (encoder *stringModeNumberEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *stringModeNumberEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return encoder.elemEncoder.IsEmpty(ptr)
+}
+
+type stringModeStringEncoder struct {
+	elemEncoder ValEncoder
+	cfg         *frozenConfig
+}
+
+func (encoder *stringModeStringEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	tempStream := encoder.cfg.BorrowStream(nil)
+	defer encoder.cfg.ReturnStream(tempStream)
+	encoder.elemEncoder.Encode(ptr, tempStream)
+	stream.WriteString(string(tempStream.Buffer()))
+}
+
+func (encoder *stringModeStringEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *stringModeStringEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return encoder.elemEncoder.IsEmpty(ptr)
+}
+
+type marshalerEncoder struct {
+	templateInterface emptyInterface
+	checkIsEmpty      checkIsEmpty
+}
+
+func (encoder *marshalerEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	templateInterface := encoder.templateInterface
+	templateInterface.word = ptr
+	realInterface := (*interface{})(unsafe.Pointer(&templateInterface))
+	marshaler := (*realInterface).(json.Marshaler)
+	bytes, err := marshaler.MarshalJSON()
+	if err != nil {
+		stream.Error = err
+	} else {
+		stream.Write(bytes)
+	}
+}
+func (encoder *marshalerEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *marshalerEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return encoder.checkIsEmpty.IsEmpty(ptr)
+}
+
+type textMarshalerEncoder struct {
+	templateInterface emptyInterface
+	checkIsEmpty      checkIsEmpty
+}
+
+func (encoder *textMarshalerEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	templateInterface := encoder.templateInterface
+	templateInterface.word = ptr
+	realInterface := (*interface{})(unsafe.Pointer(&templateInterface))
+	marshaler := (*realInterface).(encoding.TextMarshaler)
+	bytes, err := marshaler.MarshalText()
+	if err != nil {
+		stream.Error = err
+	} else {
+		stream.WriteString(string(bytes))
+	}
+}
+
+func (encoder *textMarshalerEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *textMarshalerEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return encoder.checkIsEmpty.IsEmpty(ptr)
+}
+
+type unmarshalerDecoder struct {
+	templateInterface emptyInterface
+}
+
+func (decoder *unmarshalerDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	templateInterface := decoder.templateInterface
+	templateInterface.word = ptr
+	realInterface := (*interface{})(unsafe.Pointer(&templateInterface))
+	unmarshaler := (*realInterface).(json.Unmarshaler)
+	iter.nextToken()
+	iter.unreadByte() // skip spaces
+	bytes := iter.SkipAndReturnBytes()
+	err := unmarshaler.UnmarshalJSON(bytes)
+	if err != nil {
+		iter.ReportError("unmarshalerDecoder", err.Error())
+	}
+}
+
+type textUnmarshalerDecoder struct {
+	templateInterface emptyInterface
+}
+
+func (decoder *textUnmarshalerDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	templateInterface := decoder.templateInterface
+	templateInterface.word = ptr
+	realInterface := (*interface{})(unsafe.Pointer(&templateInterface))
+	unmarshaler := (*realInterface).(encoding.TextUnmarshaler)
+	str := iter.ReadString()
+	err := unmarshaler.UnmarshalText([]byte(str))
+	if err != nil {
+		iter.ReportError("textUnmarshalerDecoder", err.Error())
+	}
+}

feature_reflect_object.go

@@ -0,0 +1,196 @@
+package jsoniter
+
+import (
+	"fmt"
+	"io"
+	"reflect"
+	"strings"
+	"unsafe"
+)
+
+func encoderOfStruct(cfg *frozenConfig, typ reflect.Type) (ValEncoder, error) {
+	type bindingTo struct {
+		binding *Binding
+		toName  string
+		ignored bool
+	}
+	orderedBindings := []*bindingTo{}
+	structDescriptor, err := describeStruct(cfg, typ)
+	if err != nil {
+		return nil, err
+	}
+	for _, binding := range structDescriptor.Fields {
+		for _, toName := range binding.ToNames {
+			new := &bindingTo{
+				binding: binding,
+				toName:  toName,
+			}
+			for _, old := range orderedBindings {
+				if old.toName != toName {
+					continue
+				}
+				old.ignored, new.ignored = resolveConflictBinding(cfg, old.binding, new.binding)
+			}
+			orderedBindings = append(orderedBindings, new)
+		}
+	}
+	if len(orderedBindings) == 0 {
+		return &emptyStructEncoder{}, nil
+	}
+	finalOrderedFields := []structFieldTo{}
+	for _, bindingTo := range orderedBindings {
+		if !bindingTo.ignored {
+			finalOrderedFields = append(finalOrderedFields, structFieldTo{
+				encoder: bindingTo.binding.Encoder.(*structFieldEncoder),
+				toName:  bindingTo.toName,
+			})
+		}
+	}
+	return &structEncoder{structDescriptor.onePtrEmbedded, structDescriptor.onePtrOptimization, finalOrderedFields}, nil
+}
+
+func resolveConflictBinding(cfg *frozenConfig, old, new *Binding) (ignoreOld, ignoreNew bool) {
+	newTagged := new.Field.Tag.Get(cfg.getTagKey()) != ""
+	oldTagged := old.Field.Tag.Get(cfg.getTagKey()) != ""
+	if newTagged {
+		if oldTagged {
+			if len(old.levels) > len(new.levels) {
+				return true, false
+			} else if len(new.levels) > len(old.levels) {
+				return false, true
+			} else {
+				return true, true
+			}
+		} else {
+			return true, false
+		}
+	} else {
+		if oldTagged {
+			return true, false
+		}
+		if len(old.levels) > len(new.levels) {
+			return true, false
+		} else if len(new.levels) > len(old.levels) {
+			return false, true
+		} else {
+			return true, true
+		}
+	}
+}
+
+func decoderOfStruct(cfg *frozenConfig, typ reflect.Type) (ValDecoder, error) {
+	bindings := map[string]*Binding{}
+	structDescriptor, err := describeStruct(cfg, typ)
+	if err != nil {
+		return nil, err
+	}
+	for _, binding := range structDescriptor.Fields {
+		for _, fromName := range binding.FromNames {
+			old := bindings[fromName]
+			if old == nil {
+				bindings[fromName] = binding
+				continue
+			}
+			ignoreOld, ignoreNew := resolveConflictBinding(cfg, old, binding)
+			if ignoreOld {
+				delete(bindings, fromName)
+			}
+			if !ignoreNew {
+				bindings[fromName] = binding
+			}
+		}
+	}
+	fields := map[string]*structFieldDecoder{}
+	for k, binding := range bindings {
+		fields[strings.ToLower(k)] = binding.Decoder.(*structFieldDecoder)
+	}
+	return createStructDecoder(typ, fields)
+}
+
+type structFieldEncoder struct {
+	field        *reflect.StructField
+	fieldEncoder ValEncoder
+	omitempty    bool
+}
+
+func (encoder *structFieldEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	fieldPtr := unsafe.Pointer(uintptr(ptr) + encoder.field.Offset)
+	encoder.fieldEncoder.Encode(fieldPtr, stream)
+	if stream.Error != nil && stream.Error != io.EOF {
+		stream.Error = fmt.Errorf("%s: %s", encoder.field.Name, stream.Error.Error())
+	}
+}
+
+func (encoder *structFieldEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *structFieldEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	fieldPtr := unsafe.Pointer(uintptr(ptr) + encoder.field.Offset)
+	return encoder.fieldEncoder.IsEmpty(fieldPtr)
+}
+
+type structEncoder struct {
+	onePtrEmbedded     bool
+	onePtrOptimization bool
+	fields             []structFieldTo
+}
+
+type structFieldTo struct {
+	encoder *structFieldEncoder
+	toName  string
+}
+
+func (encoder *structEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteObjectStart()
+	isNotFirst := false
+	for _, field := range encoder.fields {
+		if field.encoder.omitempty && field.encoder.IsEmpty(ptr) {
+			continue
+		}
+		if isNotFirst {
+			stream.WriteMore()
+		}
+		stream.WriteObjectField(field.toName)
+		field.encoder.Encode(ptr, stream)
+		isNotFirst = true
+	}
+	stream.WriteObjectEnd()
+}
+
+func (encoder *structEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	e := (*emptyInterface)(unsafe.Pointer(&val))
+	if encoder.onePtrOptimization {
+		if e.word == nil && encoder.onePtrEmbedded {
+			stream.WriteObjectStart()
+			stream.WriteObjectEnd()
+			return
+		}
+		ptr := uintptr(e.word)
+		e.word = unsafe.Pointer(&ptr)
+	}
+	if reflect.TypeOf(val).Kind() == reflect.Ptr {
+		encoder.Encode(unsafe.Pointer(&e.word), stream)
+	} else {
+		encoder.Encode(e.word, stream)
+	}
+}
+
+func (encoder *structEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return false
+}
+
+type emptyStructEncoder struct {
+}
+
+func (encoder *emptyStructEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	stream.WriteEmptyObject()
+}
+
+func (encoder *emptyStructEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *emptyStructEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	return false
+}

feature_reflect_slice.go

@@ -0,0 +1,149 @@
+package jsoniter
+
+import (
+	"fmt"
+	"io"
+	"reflect"
+	"unsafe"
+)
+
+func decoderOfSlice(cfg *frozenConfig, typ reflect.Type) (ValDecoder, error) {
+	decoder, err := decoderOfType(cfg, typ.Elem())
+	if err != nil {
+		return nil, err
+	}
+	return &sliceDecoder{typ, typ.Elem(), decoder}, nil
+}
+
+func encoderOfSlice(cfg *frozenConfig, typ reflect.Type) (ValEncoder, error) {
+	encoder, err := encoderOfType(cfg, typ.Elem())
+	if err != nil {
+		return nil, err
+	}
+	if typ.Elem().Kind() == reflect.Map {
+		encoder = &optionalEncoder{encoder}
+	}
+	return &sliceEncoder{typ, typ.Elem(), encoder}, nil
+}
+
+type sliceEncoder struct {
+	sliceType   reflect.Type
+	elemType    reflect.Type
+	elemEncoder ValEncoder
+}
+
+func (encoder *sliceEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
+	slice := (*sliceHeader)(ptr)
+	if slice.Data == nil {
+		stream.WriteNil()
+		return
+	}
+	if slice.Len == 0 {
+		stream.WriteEmptyArray()
+		return
+	}
+	stream.WriteArrayStart()
+	elemPtr := unsafe.Pointer(slice.Data)
+	encoder.elemEncoder.Encode(unsafe.Pointer(elemPtr), stream)
+	for i := 1; i < slice.Len; i++ {
+		stream.WriteMore()
+		elemPtr = unsafe.Pointer(uintptr(elemPtr) + encoder.elemType.Size())
+		encoder.elemEncoder.Encode(unsafe.Pointer(elemPtr), stream)
+	}
+	stream.WriteArrayEnd()
+	if stream.Error != nil && stream.Error != io.EOF {
+		stream.Error = fmt.Errorf("%v: %s", encoder.sliceType, stream.Error.Error())
+	}
+}
+
+func (encoder *sliceEncoder) EncodeInterface(val interface{}, stream *Stream) {
+	WriteToStream(val, stream, encoder)
+}
+
+func (encoder *sliceEncoder) IsEmpty(ptr unsafe.Pointer) bool {
+	slice := (*sliceHeader)(ptr)
+	return slice.Len == 0
+}
+
+type sliceDecoder struct {
+	sliceType   reflect.Type
+	elemType    reflect.Type
+	elemDecoder ValDecoder
+}
+
+// sliceHeader is a safe version of SliceHeader used within this package.
+type sliceHeader struct {
+	Data unsafe.Pointer
+	Len  int
+	Cap  int
+}
+
+func (decoder *sliceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	decoder.doDecode(ptr, iter)
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.sliceType, iter.Error.Error())
+	}
+}
+
+func (decoder *sliceDecoder) doDecode(ptr unsafe.Pointer, iter *Iterator) {
+	slice := (*sliceHeader)(ptr)
+	if iter.ReadNil() {
+		slice.Len = 0
+		slice.Cap = 0
+		slice.Data = nil
+		return
+	}
+	reuseSlice(slice, decoder.sliceType, 4)
+	slice.Len = 0
+	offset := uintptr(0)
+	iter.ReadArrayCB(func(iter *Iterator) bool {
+		growOne(slice, decoder.sliceType, decoder.elemType)
+		decoder.elemDecoder.Decode(unsafe.Pointer(uintptr(slice.Data)+offset), iter)
+		offset += decoder.elemType.Size()
+		return true
+	})
+}
+
+// grow grows the slice s so that it can hold extra more values, allocating
+// more capacity if needed. It also returns the old and new slice lengths.
+func growOne(slice *sliceHeader, sliceType reflect.Type, elementType reflect.Type) {
+	newLen := slice.Len + 1
+	if newLen <= slice.Cap {
+		slice.Len = newLen
+		return
+	}
+	newCap := slice.Cap
+	if newCap == 0 {
+		newCap = 1
+	} else {
+		for newCap < newLen {
+			if slice.Len < 1024 {
+				newCap += newCap
+			} else {
+				newCap += newCap / 4
+			}
+		}
+	}
+	newVal := reflect.MakeSlice(sliceType, newLen, newCap)
+	dst := unsafe.Pointer(newVal.Pointer())
+	// copy old array into new array
+	originalBytesCount := uintptr(slice.Len) * elementType.Size()
+	srcPtr := (*[1 << 30]byte)(slice.Data)
+	dstPtr := (*[1 << 30]byte)(dst)
+	for i := uintptr(0); i < originalBytesCount; i++ {
+		dstPtr[i] = srcPtr[i]
+	}
+	slice.Data = dst
+	slice.Len = newLen
+	slice.Cap = newCap
+}
+
+func reuseSlice(slice *sliceHeader, sliceType reflect.Type, expectedCap int) {
+	if expectedCap <= slice.Cap {
+		return
+	}
+	newVal := reflect.MakeSlice(sliceType, 0, expectedCap)
+	dst := unsafe.Pointer(newVal.Pointer())
+	slice.Data = dst
+	slice.Cap = expectedCap
+}

feature_reflect_struct_decoder.go

@@ -0,0 +1,916 @@
+package jsoniter
+
+import (
+	"fmt"
+	"io"
+	"reflect"
+	"strings"
+	"unsafe"
+)
+
+func createStructDecoder(typ reflect.Type, fields map[string]*structFieldDecoder) (ValDecoder, error) {
+	knownHash := map[int32]struct{}{
+		0: {},
+	}
+	switch len(fields) {
+	case 0:
+		return &skipObjectDecoder{typ}, nil
+	case 1:
+		for fieldName, fieldDecoder := range fields {
+			fieldHash := calcHash(fieldName)
+			_, known := knownHash[fieldHash]
+			if known {
+				return &generalStructDecoder{typ, fields}, nil
+			}
+			knownHash[fieldHash] = struct{}{}
+			return &oneFieldStructDecoder{typ, fieldHash, fieldDecoder}, nil
+		}
+	case 2:
+		var fieldHash1 int32
+		var fieldHash2 int32
+		var fieldDecoder1 *structFieldDecoder
+		var fieldDecoder2 *structFieldDecoder
+		for fieldName, fieldDecoder := range fields {
+			fieldHash := calcHash(fieldName)
+			_, known := knownHash[fieldHash]
+			if known {
+				return &generalStructDecoder{typ, fields}, nil
+			}
+			knownHash[fieldHash] = struct{}{}
+			if fieldHash1 == 0 {
+				fieldHash1 = fieldHash
+				fieldDecoder1 = fieldDecoder
+			} else {
+				fieldHash2 = fieldHash
+				fieldDecoder2 = fieldDecoder
+			}
+		}
+		return &twoFieldsStructDecoder{typ, fieldHash1, fieldDecoder1, fieldHash2, fieldDecoder2}, nil
+	case 3:
+		var fieldName1 int32
+		var fieldName2 int32
+		var fieldName3 int32
+		var fieldDecoder1 *structFieldDecoder
+		var fieldDecoder2 *structFieldDecoder
+		var fieldDecoder3 *structFieldDecoder
+		for fieldName, fieldDecoder := range fields {
+			fieldHash := calcHash(fieldName)
+			_, known := knownHash[fieldHash]
+			if known {
+				return &generalStructDecoder{typ, fields}, nil
+			}
+			knownHash[fieldHash] = struct{}{}
+			if fieldName1 == 0 {
+				fieldName1 = fieldHash
+				fieldDecoder1 = fieldDecoder
+			} else if fieldName2 == 0 {
+				fieldName2 = fieldHash
+				fieldDecoder2 = fieldDecoder
+			} else {
+				fieldName3 = fieldHash
+				fieldDecoder3 = fieldDecoder
+			}
+		}
+		return &threeFieldsStructDecoder{typ,
+			fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3}, nil
+	case 4:
+		var fieldName1 int32
+		var fieldName2 int32
+		var fieldName3 int32
+		var fieldName4 int32
+		var fieldDecoder1 *structFieldDecoder
+		var fieldDecoder2 *structFieldDecoder
+		var fieldDecoder3 *structFieldDecoder
+		var fieldDecoder4 *structFieldDecoder
+		for fieldName, fieldDecoder := range fields {
+			fieldHash := calcHash(fieldName)
+			_, known := knownHash[fieldHash]
+			if known {
+				return &generalStructDecoder{typ, fields}, nil
+			}
+			knownHash[fieldHash] = struct{}{}
+			if fieldName1 == 0 {
+				fieldName1 = fieldHash
+				fieldDecoder1 = fieldDecoder
+			} else if fieldName2 == 0 {
+				fieldName2 = fieldHash
+				fieldDecoder2 = fieldDecoder
+			} else if fieldName3 == 0 {
+				fieldName3 = fieldHash
+				fieldDecoder3 = fieldDecoder
+			} else {
+				fieldName4 = fieldHash
+				fieldDecoder4 = fieldDecoder
+			}
+		}
+		return &fourFieldsStructDecoder{typ,
+			fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3,
+			fieldName4, fieldDecoder4}, nil
+	case 5:
+		var fieldName1 int32
+		var fieldName2 int32
+		var fieldName3 int32
+		var fieldName4 int32
+		var fieldName5 int32
+		var fieldDecoder1 *structFieldDecoder
+		var fieldDecoder2 *structFieldDecoder
+		var fieldDecoder3 *structFieldDecoder
+		var fieldDecoder4 *structFieldDecoder
+		var fieldDecoder5 *structFieldDecoder
+		for fieldName, fieldDecoder := range fields {
+			fieldHash := calcHash(fieldName)
+			_, known := knownHash[fieldHash]
+			if known {
+				return &generalStructDecoder{typ, fields}, nil
+			}
+			knownHash[fieldHash] = struct{}{}
+			if fieldName1 == 0 {
+				fieldName1 = fieldHash
+				fieldDecoder1 = fieldDecoder
+			} else if fieldName2 == 0 {
+				fieldName2 = fieldHash
+				fieldDecoder2 = fieldDecoder
+			} else if fieldName3 == 0 {
+				fieldName3 = fieldHash
+				fieldDecoder3 = fieldDecoder
+			} else if fieldName4 == 0 {
+				fieldName4 = fieldHash
+				fieldDecoder4 = fieldDecoder
+			} else {
+				fieldName5 = fieldHash
+				fieldDecoder5 = fieldDecoder
+			}
+		}
+		return &fiveFieldsStructDecoder{typ,
+			fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3,
+			fieldName4, fieldDecoder4, fieldName5, fieldDecoder5}, nil
+	case 6:
+		var fieldName1 int32
+		var fieldName2 int32
+		var fieldName3 int32
+		var fieldName4 int32
+		var fieldName5 int32
+		var fieldName6 int32
+		var fieldDecoder1 *structFieldDecoder
+		var fieldDecoder2 *structFieldDecoder
+		var fieldDecoder3 *structFieldDecoder
+		var fieldDecoder4 *structFieldDecoder
+		var fieldDecoder5 *structFieldDecoder
+		var fieldDecoder6 *structFieldDecoder
+		for fieldName, fieldDecoder := range fields {
+			fieldHash := calcHash(fieldName)
+			_, known := knownHash[fieldHash]
+			if known {
+				return &generalStructDecoder{typ, fields}, nil
+			}
+			knownHash[fieldHash] = struct{}{}
+			if fieldName1 == 0 {
+				fieldName1 = fieldHash
+				fieldDecoder1 = fieldDecoder
+			} else if fieldName2 == 0 {
+				fieldName2 = fieldHash
+				fieldDecoder2 = fieldDecoder
+			} else if fieldName3 == 0 {
+				fieldName3 = fieldHash
+				fieldDecoder3 = fieldDecoder
+			} else if fieldName4 == 0 {
+				fieldName4 = fieldHash
+				fieldDecoder4 = fieldDecoder
+			} else if fieldName5 == 0 {
+				fieldName5 = fieldHash
+				fieldDecoder5 = fieldDecoder
+			} else {
+				fieldName6 = fieldHash
+				fieldDecoder6 = fieldDecoder
+			}
+		}
+		return &sixFieldsStructDecoder{typ,
+			fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3,
+			fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6}, nil
+	case 7:
+		var fieldName1 int32
+		var fieldName2 int32
+		var fieldName3 int32
+		var fieldName4 int32
+		var fieldName5 int32
+		var fieldName6 int32
+		var fieldName7 int32
+		var fieldDecoder1 *structFieldDecoder
+		var fieldDecoder2 *structFieldDecoder
+		var fieldDecoder3 *structFieldDecoder
+		var fieldDecoder4 *structFieldDecoder
+		var fieldDecoder5 *structFieldDecoder
+		var fieldDecoder6 *structFieldDecoder
+		var fieldDecoder7 *structFieldDecoder
+		for fieldName, fieldDecoder := range fields {
+			fieldHash := calcHash(fieldName)
+			_, known := knownHash[fieldHash]
+			if known {
+				return &generalStructDecoder{typ, fields}, nil
+			}
+			knownHash[fieldHash] = struct{}{}
+			if fieldName1 == 0 {
+				fieldName1 = fieldHash
+				fieldDecoder1 = fieldDecoder
+			} else if fieldName2 == 0 {
+				fieldName2 = fieldHash
+				fieldDecoder2 = fieldDecoder
+			} else if fieldName3 == 0 {
+				fieldName3 = fieldHash
+				fieldDecoder3 = fieldDecoder
+			} else if fieldName4 == 0 {
+				fieldName4 = fieldHash
+				fieldDecoder4 = fieldDecoder
+			} else if fieldName5 == 0 {
+				fieldName5 = fieldHash
+				fieldDecoder5 = fieldDecoder
+			} else if fieldName6 == 0 {
+				fieldName6 = fieldHash
+				fieldDecoder6 = fieldDecoder
+			} else {
+				fieldName7 = fieldHash
+				fieldDecoder7 = fieldDecoder
+			}
+		}
+		return &sevenFieldsStructDecoder{typ,
+			fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3,
+			fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6,
+			fieldName7, fieldDecoder7}, nil
+	case 8:
+		var fieldName1 int32
+		var fieldName2 int32
+		var fieldName3 int32
+		var fieldName4 int32
+		var fieldName5 int32
+		var fieldName6 int32
+		var fieldName7 int32
+		var fieldName8 int32
+		var fieldDecoder1 *structFieldDecoder
+		var fieldDecoder2 *structFieldDecoder
+		var fieldDecoder3 *structFieldDecoder
+		var fieldDecoder4 *structFieldDecoder
+		var fieldDecoder5 *structFieldDecoder
+		var fieldDecoder6 *structFieldDecoder
+		var fieldDecoder7 *structFieldDecoder
+		var fieldDecoder8 *structFieldDecoder
+		for fieldName, fieldDecoder := range fields {
+			fieldHash := calcHash(fieldName)
+			_, known := knownHash[fieldHash]
+			if known {
+				return &generalStructDecoder{typ, fields}, nil
+			}
+			knownHash[fieldHash] = struct{}{}
+			if fieldName1 == 0 {
+				fieldName1 = fieldHash
+				fieldDecoder1 = fieldDecoder
+			} else if fieldName2 == 0 {
+				fieldName2 = fieldHash
+				fieldDecoder2 = fieldDecoder
+			} else if fieldName3 == 0 {
+				fieldName3 = fieldHash
+				fieldDecoder3 = fieldDecoder
+			} else if fieldName4 == 0 {
+				fieldName4 = fieldHash
+				fieldDecoder4 = fieldDecoder
+			} else if fieldName5 == 0 {
+				fieldName5 = fieldHash
+				fieldDecoder5 = fieldDecoder
+			} else if fieldName6 == 0 {
+				fieldName6 = fieldHash
+				fieldDecoder6 = fieldDecoder
+			} else if fieldName7 == 0 {
+				fieldName7 = fieldHash
+				fieldDecoder7 = fieldDecoder
+			} else {
+				fieldName8 = fieldHash
+				fieldDecoder8 = fieldDecoder
+			}
+		}
+		return &eightFieldsStructDecoder{typ,
+			fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3,
+			fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6,
+			fieldName7, fieldDecoder7, fieldName8, fieldDecoder8}, nil
+	case 9:
+		var fieldName1 int32
+		var fieldName2 int32
+		var fieldName3 int32
+		var fieldName4 int32
+		var fieldName5 int32
+		var fieldName6 int32
+		var fieldName7 int32
+		var fieldName8 int32
+		var fieldName9 int32
+		var fieldDecoder1 *structFieldDecoder
+		var fieldDecoder2 *structFieldDecoder
+		var fieldDecoder3 *structFieldDecoder
+		var fieldDecoder4 *structFieldDecoder
+		var fieldDecoder5 *structFieldDecoder
+		var fieldDecoder6 *structFieldDecoder
+		var fieldDecoder7 *structFieldDecoder
+		var fieldDecoder8 *structFieldDecoder
+		var fieldDecoder9 *structFieldDecoder
+		for fieldName, fieldDecoder := range fields {
+			fieldHash := calcHash(fieldName)
+			_, known := knownHash[fieldHash]
+			if known {
+				return &generalStructDecoder{typ, fields}, nil
+			}
+			knownHash[fieldHash] = struct{}{}
+			if fieldName1 == 0 {
+				fieldName1 = fieldHash
+				fieldDecoder1 = fieldDecoder
+			} else if fieldName2 == 0 {
+				fieldName2 = fieldHash
+				fieldDecoder2 = fieldDecoder
+			} else if fieldName3 == 0 {
+				fieldName3 = fieldHash
+				fieldDecoder3 = fieldDecoder
+			} else if fieldName4 == 0 {
+				fieldName4 = fieldHash
+				fieldDecoder4 = fieldDecoder
+			} else if fieldName5 == 0 {
+				fieldName5 = fieldHash
+				fieldDecoder5 = fieldDecoder
+			} else if fieldName6 == 0 {
+				fieldName6 = fieldHash
+				fieldDecoder6 = fieldDecoder
+			} else if fieldName7 == 0 {
+				fieldName7 = fieldHash
+				fieldDecoder7 = fieldDecoder
+			} else if fieldName8 == 0 {
+				fieldName8 = fieldHash
+				fieldDecoder8 = fieldDecoder
+			} else {
+				fieldName9 = fieldHash
+				fieldDecoder9 = fieldDecoder
+			}
+		}
+		return &nineFieldsStructDecoder{typ,
+			fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3,
+			fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6,
+			fieldName7, fieldDecoder7, fieldName8, fieldDecoder8, fieldName9, fieldDecoder9}, nil
+	case 10:
+		var fieldName1 int32
+		var fieldName2 int32
+		var fieldName3 int32
+		var fieldName4 int32
+		var fieldName5 int32
+		var fieldName6 int32
+		var fieldName7 int32
+		var fieldName8 int32
+		var fieldName9 int32
+		var fieldName10 int32
+		var fieldDecoder1 *structFieldDecoder
+		var fieldDecoder2 *structFieldDecoder
+		var fieldDecoder3 *structFieldDecoder
+		var fieldDecoder4 *structFieldDecoder
+		var fieldDecoder5 *structFieldDecoder
+		var fieldDecoder6 *structFieldDecoder
+		var fieldDecoder7 *structFieldDecoder
+		var fieldDecoder8 *structFieldDecoder
+		var fieldDecoder9 *structFieldDecoder
+		var fieldDecoder10 *structFieldDecoder
+		for fieldName, fieldDecoder := range fields {
+			fieldHash := calcHash(fieldName)
+			_, known := knownHash[fieldHash]
+			if known {
+				return &generalStructDecoder{typ, fields}, nil
+			}
+			knownHash[fieldHash] = struct{}{}
+			if fieldName1 == 0 {
+				fieldName1 = fieldHash
+				fieldDecoder1 = fieldDecoder
+			} else if fieldName2 == 0 {
+				fieldName2 = fieldHash
+				fieldDecoder2 = fieldDecoder
+			} else if fieldName3 == 0 {
+				fieldName3 = fieldHash
+				fieldDecoder3 = fieldDecoder
+			} else if fieldName4 == 0 {
+				fieldName4 = fieldHash
+				fieldDecoder4 = fieldDecoder
+			} else if fieldName5 == 0 {
+				fieldName5 = fieldHash
+				fieldDecoder5 = fieldDecoder
+			} else if fieldName6 == 0 {
+				fieldName6 = fieldHash
+				fieldDecoder6 = fieldDecoder
+			} else if fieldName7 == 0 {
+				fieldName7 = fieldHash
+				fieldDecoder7 = fieldDecoder
+			} else if fieldName8 == 0 {
+				fieldName8 = fieldHash
+				fieldDecoder8 = fieldDecoder
+			} else if fieldName9 == 0 {
+				fieldName9 = fieldHash
+				fieldDecoder9 = fieldDecoder
+			} else {
+				fieldName10 = fieldHash
+				fieldDecoder10 = fieldDecoder
+			}
+		}
+		return &tenFieldsStructDecoder{typ,
+			fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3,
+			fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6,
+			fieldName7, fieldDecoder7, fieldName8, fieldDecoder8, fieldName9, fieldDecoder9,
+			fieldName10, fieldDecoder10}, nil
+	}
+	return &generalStructDecoder{typ, fields}, nil
+}
+
+type generalStructDecoder struct {
+	typ    reflect.Type
+	fields map[string]*structFieldDecoder
+}
+
+func (decoder *generalStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	fieldBytes := iter.readObjectFieldAsBytes()
+	field := *(*string)(unsafe.Pointer(&fieldBytes))
+	fieldDecoder := decoder.fields[strings.ToLower(field)]
+	if fieldDecoder == nil {
+		iter.Skip()
+	} else {
+		fieldDecoder.Decode(ptr, iter)
+	}
+	for iter.nextToken() == ',' {
+		fieldBytes = iter.readObjectFieldAsBytes()
+		field = *(*string)(unsafe.Pointer(&fieldBytes))
+		fieldDecoder = decoder.fields[strings.ToLower(field)]
+		if fieldDecoder == nil {
+			iter.Skip()
+		} else {
+			fieldDecoder.Decode(ptr, iter)
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type skipObjectDecoder struct {
+	typ reflect.Type
+}
+
+func (decoder *skipObjectDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	valueType := iter.WhatIsNext()
+	if valueType != ObjectValue && valueType != NilValue {
+		iter.ReportError("skipObjectDecoder", "expect object or null")
+		return
+	}
+	iter.Skip()
+}
+
+type oneFieldStructDecoder struct {
+	typ          reflect.Type
+	fieldHash    int32
+	fieldDecoder *structFieldDecoder
+}
+
+func (decoder *oneFieldStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	for {
+		if iter.readFieldHash() == decoder.fieldHash {
+			decoder.fieldDecoder.Decode(ptr, iter)
+		} else {
+			iter.Skip()
+		}
+		if iter.isObjectEnd() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type twoFieldsStructDecoder struct {
+	typ           reflect.Type
+	fieldHash1    int32
+	fieldDecoder1 *structFieldDecoder
+	fieldHash2    int32
+	fieldDecoder2 *structFieldDecoder
+}
+
+func (decoder *twoFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	for {
+		switch iter.readFieldHash() {
+		case decoder.fieldHash1:
+			decoder.fieldDecoder1.Decode(ptr, iter)
+		case decoder.fieldHash2:
+			decoder.fieldDecoder2.Decode(ptr, iter)
+		default:
+			iter.Skip()
+		}
+		if iter.isObjectEnd() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type threeFieldsStructDecoder struct {
+	typ           reflect.Type
+	fieldHash1    int32
+	fieldDecoder1 *structFieldDecoder
+	fieldHash2    int32
+	fieldDecoder2 *structFieldDecoder
+	fieldHash3    int32
+	fieldDecoder3 *structFieldDecoder
+}
+
+func (decoder *threeFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	for {
+		switch iter.readFieldHash() {
+		case decoder.fieldHash1:
+			decoder.fieldDecoder1.Decode(ptr, iter)
+		case decoder.fieldHash2:
+			decoder.fieldDecoder2.Decode(ptr, iter)
+		case decoder.fieldHash3:
+			decoder.fieldDecoder3.Decode(ptr, iter)
+		default:
+			iter.Skip()
+		}
+		if iter.isObjectEnd() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type fourFieldsStructDecoder struct {
+	typ           reflect.Type
+	fieldHash1    int32
+	fieldDecoder1 *structFieldDecoder
+	fieldHash2    int32
+	fieldDecoder2 *structFieldDecoder
+	fieldHash3    int32
+	fieldDecoder3 *structFieldDecoder
+	fieldHash4    int32
+	fieldDecoder4 *structFieldDecoder
+}
+
+func (decoder *fourFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	for {
+		switch iter.readFieldHash() {
+		case decoder.fieldHash1:
+			decoder.fieldDecoder1.Decode(ptr, iter)
+		case decoder.fieldHash2:
+			decoder.fieldDecoder2.Decode(ptr, iter)
+		case decoder.fieldHash3:
+			decoder.fieldDecoder3.Decode(ptr, iter)
+		case decoder.fieldHash4:
+			decoder.fieldDecoder4.Decode(ptr, iter)
+		default:
+			iter.Skip()
+		}
+		if iter.isObjectEnd() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type fiveFieldsStructDecoder struct {
+	typ           reflect.Type
+	fieldHash1    int32
+	fieldDecoder1 *structFieldDecoder
+	fieldHash2    int32
+	fieldDecoder2 *structFieldDecoder
+	fieldHash3    int32
+	fieldDecoder3 *structFieldDecoder
+	fieldHash4    int32
+	fieldDecoder4 *structFieldDecoder
+	fieldHash5    int32
+	fieldDecoder5 *structFieldDecoder
+}
+
+func (decoder *fiveFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	for {
+		switch iter.readFieldHash() {
+		case decoder.fieldHash1:
+			decoder.fieldDecoder1.Decode(ptr, iter)
+		case decoder.fieldHash2:
+			decoder.fieldDecoder2.Decode(ptr, iter)
+		case decoder.fieldHash3:
+			decoder.fieldDecoder3.Decode(ptr, iter)
+		case decoder.fieldHash4:
+			decoder.fieldDecoder4.Decode(ptr, iter)
+		case decoder.fieldHash5:
+			decoder.fieldDecoder5.Decode(ptr, iter)
+		default:
+			iter.Skip()
+		}
+		if iter.isObjectEnd() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type sixFieldsStructDecoder struct {
+	typ           reflect.Type
+	fieldHash1    int32
+	fieldDecoder1 *structFieldDecoder
+	fieldHash2    int32
+	fieldDecoder2 *structFieldDecoder
+	fieldHash3    int32
+	fieldDecoder3 *structFieldDecoder
+	fieldHash4    int32
+	fieldDecoder4 *structFieldDecoder
+	fieldHash5    int32
+	fieldDecoder5 *structFieldDecoder
+	fieldHash6    int32
+	fieldDecoder6 *structFieldDecoder
+}
+
+func (decoder *sixFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	for {
+		switch iter.readFieldHash() {
+		case decoder.fieldHash1:
+			decoder.fieldDecoder1.Decode(ptr, iter)
+		case decoder.fieldHash2:
+			decoder.fieldDecoder2.Decode(ptr, iter)
+		case decoder.fieldHash3:
+			decoder.fieldDecoder3.Decode(ptr, iter)
+		case decoder.fieldHash4:
+			decoder.fieldDecoder4.Decode(ptr, iter)
+		case decoder.fieldHash5:
+			decoder.fieldDecoder5.Decode(ptr, iter)
+		case decoder.fieldHash6:
+			decoder.fieldDecoder6.Decode(ptr, iter)
+		default:
+			iter.Skip()
+		}
+		if iter.isObjectEnd() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type sevenFieldsStructDecoder struct {
+	typ           reflect.Type
+	fieldHash1    int32
+	fieldDecoder1 *structFieldDecoder
+	fieldHash2    int32
+	fieldDecoder2 *structFieldDecoder
+	fieldHash3    int32
+	fieldDecoder3 *structFieldDecoder
+	fieldHash4    int32
+	fieldDecoder4 *structFieldDecoder
+	fieldHash5    int32
+	fieldDecoder5 *structFieldDecoder
+	fieldHash6    int32
+	fieldDecoder6 *structFieldDecoder
+	fieldHash7    int32
+	fieldDecoder7 *structFieldDecoder
+}
+
+func (decoder *sevenFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	for {
+		switch iter.readFieldHash() {
+		case decoder.fieldHash1:
+			decoder.fieldDecoder1.Decode(ptr, iter)
+		case decoder.fieldHash2:
+			decoder.fieldDecoder2.Decode(ptr, iter)
+		case decoder.fieldHash3:
+			decoder.fieldDecoder3.Decode(ptr, iter)
+		case decoder.fieldHash4:
+			decoder.fieldDecoder4.Decode(ptr, iter)
+		case decoder.fieldHash5:
+			decoder.fieldDecoder5.Decode(ptr, iter)
+		case decoder.fieldHash6:
+			decoder.fieldDecoder6.Decode(ptr, iter)
+		case decoder.fieldHash7:
+			decoder.fieldDecoder7.Decode(ptr, iter)
+		default:
+			iter.Skip()
+		}
+		if iter.isObjectEnd() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type eightFieldsStructDecoder struct {
+	typ           reflect.Type
+	fieldHash1    int32
+	fieldDecoder1 *structFieldDecoder
+	fieldHash2    int32
+	fieldDecoder2 *structFieldDecoder
+	fieldHash3    int32
+	fieldDecoder3 *structFieldDecoder
+	fieldHash4    int32
+	fieldDecoder4 *structFieldDecoder
+	fieldHash5    int32
+	fieldDecoder5 *structFieldDecoder
+	fieldHash6    int32
+	fieldDecoder6 *structFieldDecoder
+	fieldHash7    int32
+	fieldDecoder7 *structFieldDecoder
+	fieldHash8    int32
+	fieldDecoder8 *structFieldDecoder
+}
+
+func (decoder *eightFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	for {
+		switch iter.readFieldHash() {
+		case decoder.fieldHash1:
+			decoder.fieldDecoder1.Decode(ptr, iter)
+		case decoder.fieldHash2:
+			decoder.fieldDecoder2.Decode(ptr, iter)
+		case decoder.fieldHash3:
+			decoder.fieldDecoder3.Decode(ptr, iter)
+		case decoder.fieldHash4:
+			decoder.fieldDecoder4.Decode(ptr, iter)
+		case decoder.fieldHash5:
+			decoder.fieldDecoder5.Decode(ptr, iter)
+		case decoder.fieldHash6:
+			decoder.fieldDecoder6.Decode(ptr, iter)
+		case decoder.fieldHash7:
+			decoder.fieldDecoder7.Decode(ptr, iter)
+		case decoder.fieldHash8:
+			decoder.fieldDecoder8.Decode(ptr, iter)
+		default:
+			iter.Skip()
+		}
+		if iter.isObjectEnd() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type nineFieldsStructDecoder struct {
+	typ           reflect.Type
+	fieldHash1    int32
+	fieldDecoder1 *structFieldDecoder
+	fieldHash2    int32
+	fieldDecoder2 *structFieldDecoder
+	fieldHash3    int32
+	fieldDecoder3 *structFieldDecoder
+	fieldHash4    int32
+	fieldDecoder4 *structFieldDecoder
+	fieldHash5    int32
+	fieldDecoder5 *structFieldDecoder
+	fieldHash6    int32
+	fieldDecoder6 *structFieldDecoder
+	fieldHash7    int32
+	fieldDecoder7 *structFieldDecoder
+	fieldHash8    int32
+	fieldDecoder8 *structFieldDecoder
+	fieldHash9    int32
+	fieldDecoder9 *structFieldDecoder
+}
+
+func (decoder *nineFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	for {
+		switch iter.readFieldHash() {
+		case decoder.fieldHash1:
+			decoder.fieldDecoder1.Decode(ptr, iter)
+		case decoder.fieldHash2:
+			decoder.fieldDecoder2.Decode(ptr, iter)
+		case decoder.fieldHash3:
+			decoder.fieldDecoder3.Decode(ptr, iter)
+		case decoder.fieldHash4:
+			decoder.fieldDecoder4.Decode(ptr, iter)
+		case decoder.fieldHash5:
+			decoder.fieldDecoder5.Decode(ptr, iter)
+		case decoder.fieldHash6:
+			decoder.fieldDecoder6.Decode(ptr, iter)
+		case decoder.fieldHash7:
+			decoder.fieldDecoder7.Decode(ptr, iter)
+		case decoder.fieldHash8:
+			decoder.fieldDecoder8.Decode(ptr, iter)
+		case decoder.fieldHash9:
+			decoder.fieldDecoder9.Decode(ptr, iter)
+		default:
+			iter.Skip()
+		}
+		if iter.isObjectEnd() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type tenFieldsStructDecoder struct {
+	typ            reflect.Type
+	fieldHash1     int32
+	fieldDecoder1  *structFieldDecoder
+	fieldHash2     int32
+	fieldDecoder2  *structFieldDecoder
+	fieldHash3     int32
+	fieldDecoder3  *structFieldDecoder
+	fieldHash4     int32
+	fieldDecoder4  *structFieldDecoder
+	fieldHash5     int32
+	fieldDecoder5  *structFieldDecoder
+	fieldHash6     int32
+	fieldDecoder6  *structFieldDecoder
+	fieldHash7     int32
+	fieldDecoder7  *structFieldDecoder
+	fieldHash8     int32
+	fieldDecoder8  *structFieldDecoder
+	fieldHash9     int32
+	fieldDecoder9  *structFieldDecoder
+	fieldHash10    int32
+	fieldDecoder10 *structFieldDecoder
+}
+
+func (decoder *tenFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	if !iter.readObjectStart() {
+		return
+	}
+	for {
+		switch iter.readFieldHash() {
+		case decoder.fieldHash1:
+			decoder.fieldDecoder1.Decode(ptr, iter)
+		case decoder.fieldHash2:
+			decoder.fieldDecoder2.Decode(ptr, iter)
+		case decoder.fieldHash3:
+			decoder.fieldDecoder3.Decode(ptr, iter)
+		case decoder.fieldHash4:
+			decoder.fieldDecoder4.Decode(ptr, iter)
+		case decoder.fieldHash5:
+			decoder.fieldDecoder5.Decode(ptr, iter)
+		case decoder.fieldHash6:
+			decoder.fieldDecoder6.Decode(ptr, iter)
+		case decoder.fieldHash7:
+			decoder.fieldDecoder7.Decode(ptr, iter)
+		case decoder.fieldHash8:
+			decoder.fieldDecoder8.Decode(ptr, iter)
+		case decoder.fieldHash9:
+			decoder.fieldDecoder9.Decode(ptr, iter)
+		case decoder.fieldHash10:
+			decoder.fieldDecoder10.Decode(ptr, iter)
+		default:
+			iter.Skip()
+		}
+		if iter.isObjectEnd() {
+			break
+		}
+	}
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error())
+	}
+}
+
+type structFieldDecoder struct {
+	field        *reflect.StructField
+	fieldDecoder ValDecoder
+}
+
+func (decoder *structFieldDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
+	fieldPtr := unsafe.Pointer(uintptr(ptr) + decoder.field.Offset)
+	decoder.fieldDecoder.Decode(fieldPtr, iter)
+	if iter.Error != nil && iter.Error != io.EOF {
+		iter.Error = fmt.Errorf("%s: %s", decoder.field.Name, iter.Error.Error())
+	}
+}

feature_stream.go

@@ -0,0 +1,305 @@
+package jsoniter
+
+import (
+	"io"
+)
+
+// Stream is a io.Writer like object, with JSON specific write functions.
+// Error is not returned as return value, but stored as Error member on this stream instance.
+type Stream struct {
+	cfg       *frozenConfig
+	out       io.Writer
+	buf       []byte
+	n         int
+	Error     error
+	indention int
+}
+
+// NewStream create new stream instance.
+// cfg can be jsoniter.ConfigDefault.
+// out can be nil if write to internal buffer.
+// bufSize is the initial size for the internal buffer in bytes.
+func NewStream(cfg API, out io.Writer, bufSize int) *Stream {
+	return &Stream{
+		cfg:       cfg.(*frozenConfig),
+		out:       out,
+		buf:       make([]byte, bufSize),
+		n:         0,
+		Error:     nil,
+		indention: 0,
+	}
+}
+
+// Pool returns a pool can provide more stream with same configuration
+func (stream *Stream) Pool() StreamPool {
+	return stream.cfg
+}
+
+// Reset reuse this stream instance by assign a new writer
+func (stream *Stream) Reset(out io.Writer) {
+	stream.out = out
+	stream.n = 0
+}
+
+// Available returns how many bytes are unused in the buffer.
+func (stream *Stream) Available() int {
+	return len(stream.buf) - stream.n
+}
+
+// Buffered returns the number of bytes that have been written into the current buffer.
+func (stream *Stream) Buffered() int {
+	return stream.n
+}
+
+// Buffer if writer is nil, use this method to take the result
+func (stream *Stream) Buffer() []byte {
+	return stream.buf[:stream.n]
+}
+
+// Write writes the contents of p into the buffer.
+// It returns the number of bytes written.
+// If nn < len(p), it also returns an error explaining
+// why the write is short.
+func (stream *Stream) Write(p []byte) (nn int, err error) {
+	for len(p) > stream.Available() && stream.Error == nil {
+		if stream.out == nil {
+			stream.growAtLeast(len(p))
+		} else {
+			var n int
+			if stream.Buffered() == 0 {
+				// Large write, empty buffer.
+				// Write directly from p to avoid copy.
+				n, stream.Error = stream.out.Write(p)
+			} else {
+				n = copy(stream.buf[stream.n:], p)
+				stream.n += n
+				stream.Flush()
+			}
+			nn += n
+			p = p[n:]
+		}
+	}
+	if stream.Error != nil {
+		return nn, stream.Error
+	}
+	n := copy(stream.buf[stream.n:], p)
+	stream.n += n
+	nn += n
+	return nn, nil
+}
+
+// WriteByte writes a single byte.
+func (stream *Stream) writeByte(c byte) {
+	if stream.Error != nil {
+		return
+	}
+	if stream.Available() < 1 {
+		stream.growAtLeast(1)
+	}
+	stream.buf[stream.n] = c
+	stream.n++
+}
+
+func (stream *Stream) writeTwoBytes(c1 byte, c2 byte) {
+	if stream.Error != nil {
+		return
+	}
+	if stream.Available() < 2 {
+		stream.growAtLeast(2)
+	}
+	stream.buf[stream.n] = c1
+	stream.buf[stream.n+1] = c2
+	stream.n += 2
+}
+
+func (stream *Stream) writeThreeBytes(c1 byte, c2 byte, c3 byte) {
+	if stream.Error != nil {
+		return
+	}
+	if stream.Available() < 3 {
+		stream.growAtLeast(3)
+	}
+	stream.buf[stream.n] = c1
+	stream.buf[stream.n+1] = c2
+	stream.buf[stream.n+2] = c3
+	stream.n += 3
+}
+
+func (stream *Stream) writeFourBytes(c1 byte, c2 byte, c3 byte, c4 byte) {
+	if stream.Error != nil {
+		return
+	}
+	if stream.Available() < 4 {
+		stream.growAtLeast(4)
+	}
+	stream.buf[stream.n] = c1
+	stream.buf[stream.n+1] = c2
+	stream.buf[stream.n+2] = c3
+	stream.buf[stream.n+3] = c4
+	stream.n += 4
+}
+
+func (stream *Stream) writeFiveBytes(c1 byte, c2 byte, c3 byte, c4 byte, c5 byte) {
+	if stream.Error != nil {
+		return
+	}
+	if stream.Available() < 5 {
+		stream.growAtLeast(5)
+	}
+	stream.buf[stream.n] = c1
+	stream.buf[stream.n+1] = c2
+	stream.buf[stream.n+2] = c3
+	stream.buf[stream.n+3] = c4
+	stream.buf[stream.n+4] = c5
+	stream.n += 5
+}
+
+// Flush writes any buffered data to the underlying io.Writer.
+func (stream *Stream) Flush() error {
+	if stream.out == nil {
+		return nil
+	}
+	if stream.Error != nil {
+		return stream.Error
+	}
+	if stream.n == 0 {
+		return nil
+	}
+	n, err := stream.out.Write(stream.buf[0:stream.n])
+	if n < stream.n && err == nil {
+		err = io.ErrShortWrite
+	}
+	if err != nil {
+		if n > 0 && n < stream.n {
+			copy(stream.buf[0:stream.n-n], stream.buf[n:stream.n])
+		}
+		stream.n -= n
+		stream.Error = err
+		return err
+	}
+	stream.n = 0
+	return nil
+}
+
+func (stream *Stream) ensure(minimal int) {
+	available := stream.Available()
+	if available < minimal {
+		stream.growAtLeast(minimal)
+	}
+}
+
+func (stream *Stream) growAtLeast(minimal int) {
+	if stream.out != nil {
+		stream.Flush()
+	}
+	toGrow := len(stream.buf)
+	if toGrow < minimal {
+		toGrow = minimal
+	}
+	newBuf := make([]byte, len(stream.buf)+toGrow)
+	copy(newBuf, stream.Buffer())
+	stream.buf = newBuf
+}
+
+// WriteRaw write string out without quotes, just like []byte
+func (stream *Stream) WriteRaw(s string) {
+	stream.ensure(len(s))
+	if stream.Error != nil {
+		return
+	}
+	n := copy(stream.buf[stream.n:], s)
+	stream.n += n
+}
+
+// WriteNil write null to stream
+func (stream *Stream) WriteNil() {
+	stream.writeFourBytes('n', 'u', 'l', 'l')
+}
+
+// WriteTrue write true to stream
+func (stream *Stream) WriteTrue() {
+	stream.writeFourBytes('t', 'r', 'u', 'e')
+}
+
+// WriteFalse write false to stream
+func (stream *Stream) WriteFalse() {
+	stream.writeFiveBytes('f', 'a', 'l', 's', 'e')
+}
+
+// WriteBool write true or false into stream
+func (stream *Stream) WriteBool(val bool) {
+	if val {
+		stream.WriteTrue()
+	} else {
+		stream.WriteFalse()
+	}
+}
+
+// WriteObjectStart write { with possible indention
+func (stream *Stream) WriteObjectStart() {
+	stream.indention += stream.cfg.indentionStep
+	stream.writeByte('{')
+	stream.writeIndention(0)
+}
+
+// WriteObjectField write "field": with possible indention
+func (stream *Stream) WriteObjectField(field string) {
+	stream.WriteString(field)
+	if stream.indention > 0 {
+		stream.writeTwoBytes(':', ' ')
+	} else {
+		stream.writeByte(':')
+	}
+}
+
+// WriteObjectEnd write } with possible indention
+func (stream *Stream) WriteObjectEnd() {
+	stream.writeIndention(stream.cfg.indentionStep)
+	stream.indention -= stream.cfg.indentionStep
+	stream.writeByte('}')
+}
+
+// WriteEmptyObject write {}
+func (stream *Stream) WriteEmptyObject() {
+	stream.writeByte('{')
+	stream.writeByte('}')
+}
+
+// WriteMore write , with possible indention
+func (stream *Stream) WriteMore() {
+	stream.writeByte(',')
+	stream.writeIndention(0)
+}
+
+// WriteArrayStart write [ with possible indention
+func (stream *Stream) WriteArrayStart() {
+	stream.indention += stream.cfg.indentionStep
+	stream.writeByte('[')
+	stream.writeIndention(0)
+}
+
+// WriteEmptyArray write []
+func (stream *Stream) WriteEmptyArray() {
+	stream.writeByte('[')
+	stream.writeByte(']')
+}
+
+// WriteArrayEnd write ] with possible indention
+func (stream *Stream) WriteArrayEnd() {
+	stream.writeIndention(stream.cfg.indentionStep)
+	stream.indention -= stream.cfg.indentionStep
+	stream.writeByte(']')
+}
+
+func (stream *Stream) writeIndention(delta int) {
+	if stream.indention == 0 {
+		return
+	}
+	stream.writeByte('\n')
+	toWrite := stream.indention - delta
+	stream.ensure(toWrite)
+	for i := 0; i < toWrite && stream.n < len(stream.buf); i++ {
+		stream.buf[stream.n] = ' '
+		stream.n++
+	}
+}

feature_stream_float.go

@@ -0,0 +1,96 @@
+package jsoniter
+
+import (
+	"math"
+	"strconv"
+)
+
+var pow10 []uint64
+
+func init() {
+	pow10 = []uint64{1, 10, 100, 1000, 10000, 100000, 1000000}
+}
+
+// WriteFloat32 write float32 to stream
+func (stream *Stream) WriteFloat32(val float32) {
+	abs := math.Abs(float64(val))
+	fmt := byte('f')
+	// Note: Must use float32 comparisons for underlying float32 value to get precise cutoffs right.
+	if abs != 0 {
+		if float32(abs) < 1e-6 || float32(abs) >= 1e21 {
+			fmt = 'e'
+		}
+	}
+	stream.WriteRaw(strconv.FormatFloat(float64(val), fmt, -1, 32))
+}
+
+// WriteFloat32Lossy write float32 to stream with ONLY 6 digits precision although much much faster
+func (stream *Stream) WriteFloat32Lossy(val float32) {
+	if val < 0 {
+		stream.writeByte('-')
+		val = -val
+	}
+	if val > 0x4ffffff {
+		stream.WriteFloat32(val)
+		return
+	}
+	precision := 6
+	exp := uint64(1000000) // 6
+	lval := uint64(float64(val)*float64(exp) + 0.5)
+	stream.WriteUint64(lval / exp)
+	fval := lval % exp
+	if fval == 0 {
+		return
+	}
+	stream.writeByte('.')
+	stream.ensure(10)
+	for p := precision - 1; p > 0 && fval < pow10[p]; p-- {
+		stream.writeByte('0')
+	}
+	stream.WriteUint64(fval)
+	for stream.buf[stream.n-1] == '0' {
+		stream.n--
+	}
+}
+
+// WriteFloat64 write float64 to stream
+func (stream *Stream) WriteFloat64(val float64) {
+	abs := math.Abs(val)
+	fmt := byte('f')
+	// Note: Must use float32 comparisons for underlying float32 value to get precise cutoffs right.
+	if abs != 0 {
+		if abs < 1e-6 || abs >= 1e21 {
+			fmt = 'e'
+		}
+	}
+	stream.WriteRaw(strconv.FormatFloat(float64(val), fmt, -1, 64))
+}
+
+// WriteFloat64Lossy write float64 to stream with ONLY 6 digits precision although much much faster
+func (stream *Stream) WriteFloat64Lossy(val float64) {
+	if val < 0 {
+		stream.writeByte('-')
+		val = -val
+	}
+	if val > 0x4ffffff {
+		stream.WriteFloat64(val)
+		return
+	}
+	precision := 6
+	exp := uint64(1000000) // 6
+	lval := uint64(val*float64(exp) + 0.5)
+	stream.WriteUint64(lval / exp)
+	fval := lval % exp
+	if fval == 0 {
+		return
+	}
+	stream.writeByte('.')
+	stream.ensure(10)
+	for p := precision - 1; p > 0 && fval < pow10[p]; p-- {
+		stream.writeByte('0')
+	}
+	stream.WriteUint64(fval)
+	for stream.buf[stream.n-1] == '0' {
+		stream.n--
+	}
+}

feature_stream_int.go

@@ -0,0 +1,320 @@
+package jsoniter
+
+var digits []uint32
+
+func init() {
+	digits = make([]uint32, 1000)
+	for i := uint32(0); i < 1000; i++ {
+		digits[i] = (((i / 100) + '0') << 16) + ((((i / 10) % 10) + '0') << 8) + i%10 + '0'
+		if i < 10 {
+			digits[i] += 2 << 24
+		} else if i < 100 {
+			digits[i] += 1 << 24
+		}
+	}
+}
+
+func writeFirstBuf(buf []byte, v uint32, n int) int {
+	start := v >> 24
+	if start == 0 {
+		buf[n] = byte(v >> 16)
+		n++
+		buf[n] = byte(v >> 8)
+		n++
+	} else if start == 1 {
+		buf[n] = byte(v >> 8)
+		n++
+	}
+	buf[n] = byte(v)
+	n++
+	return n
+}
+
+func writeBuf(buf []byte, v uint32, n int) {
+	buf[n] = byte(v >> 16)
+	buf[n+1] = byte(v >> 8)
+	buf[n+2] = byte(v)
+}
+
+// WriteUint8 write uint8 to stream
+func (stream *Stream) WriteUint8(val uint8) {
+	stream.ensure(3)
+	stream.n = writeFirstBuf(stream.buf, digits[val], stream.n)
+}
+
+// WriteInt8 write int8 to stream
+func (stream *Stream) WriteInt8(nval int8) {
+	stream.ensure(4)
+	n := stream.n
+	var val uint8
+	if nval < 0 {
+		val = uint8(-nval)
+		stream.buf[n] = '-'
+		n++
+	} else {
+		val = uint8(nval)
+	}
+	stream.n = writeFirstBuf(stream.buf, digits[val], n)
+}
+
+// WriteUint16 write uint16 to stream
+func (stream *Stream) WriteUint16(val uint16) {
+	stream.ensure(5)
+	q1 := val / 1000
+	if q1 == 0 {
+		stream.n = writeFirstBuf(stream.buf, digits[val], stream.n)
+		return
+	}
+	r1 := val - q1*1000
+	n := writeFirstBuf(stream.buf, digits[q1], stream.n)
+	writeBuf(stream.buf, digits[r1], n)
+	stream.n = n + 3
+	return
+}
+
+// WriteInt16 write int16 to stream
+func (stream *Stream) WriteInt16(nval int16) {
+	stream.ensure(6)
+	n := stream.n
+	var val uint16
+	if nval < 0 {
+		val = uint16(-nval)
+		stream.buf[n] = '-'
+		n++
+	} else {
+		val = uint16(nval)
+	}
+	q1 := val / 1000
+	if q1 == 0 {
+		stream.n = writeFirstBuf(stream.buf, digits[val], n)
+		return
+	}
+	r1 := val - q1*1000
+	n = writeFirstBuf(stream.buf, digits[q1], n)
+	writeBuf(stream.buf, digits[r1], n)
+	stream.n = n + 3
+	return
+}
+
+// WriteUint32 write uint32 to stream
+func (stream *Stream) WriteUint32(val uint32) {
+	stream.ensure(10)
+	n := stream.n
+	q1 := val / 1000
+	if q1 == 0 {
+		stream.n = writeFirstBuf(stream.buf, digits[val], n)
+		return
+	}
+	r1 := val - q1*1000
+	q2 := q1 / 1000
+	if q2 == 0 {
+		n := writeFirstBuf(stream.buf, digits[q1], n)
+		writeBuf(stream.buf, digits[r1], n)
+		stream.n = n + 3
+		return
+	}
+	r2 := q1 - q2*1000
+	q3 := q2 / 1000
+	if q3 == 0 {
+		n = writeFirstBuf(stream.buf, digits[q2], n)
+	} else {
+		r3 := q2 - q3*1000
+		stream.buf[n] = byte(q3 + '0')
+		n++
+		writeBuf(stream.buf, digits[r3], n)
+		n += 3
+	}
+	writeBuf(stream.buf, digits[r2], n)
+	writeBuf(stream.buf, digits[r1], n+3)
+	stream.n = n + 6
+}
+
+// WriteInt32 write int32 to stream
+func (stream *Stream) WriteInt32(nval int32) {
+	stream.ensure(11)
+	n := stream.n
+	var val uint32
+	if nval < 0 {
+		val = uint32(-nval)
+		stream.buf[n] = '-'
+		n++
+	} else {
+		val = uint32(nval)
+	}
+	q1 := val / 1000
+	if q1 == 0 {
+		stream.n = writeFirstBuf(stream.buf, digits[val], n)
+		return
+	}
+	r1 := val - q1*1000
+	q2 := q1 / 1000
+	if q2 == 0 {
+		n := writeFirstBuf(stream.buf, digits[q1], n)
+		writeBuf(stream.buf, digits[r1], n)
+		stream.n = n + 3
+		return
+	}
+	r2 := q1 - q2*1000
+	q3 := q2 / 1000
+	if q3 == 0 {
+		n = writeFirstBuf(stream.buf, digits[q2], n)
+	} else {
+		r3 := q2 - q3*1000
+		stream.buf[n] = byte(q3 + '0')
+		n++
+		writeBuf(stream.buf, digits[r3], n)
+		n += 3
+	}
+	writeBuf(stream.buf, digits[r2], n)
+	writeBuf(stream.buf, digits[r1], n+3)
+	stream.n = n + 6
+}
+
+// WriteUint64 write uint64 to stream
+func (stream *Stream) WriteUint64(val uint64) {
+	stream.ensure(20)
+	n := stream.n
+	q1 := val / 1000
+	if q1 == 0 {
+		stream.n = writeFirstBuf(stream.buf, digits[val], n)
+		return
+	}
+	r1 := val - q1*1000
+	q2 := q1 / 1000
+	if q2 == 0 {
+		n := writeFirstBuf(stream.buf, digits[q1], n)
+		writeBuf(stream.buf, digits[r1], n)
+		stream.n = n + 3
+		return
+	}
+	r2 := q1 - q2*1000
+	q3 := q2 / 1000
+	if q3 == 0 {
+		n = writeFirstBuf(stream.buf, digits[q2], n)
+		writeBuf(stream.buf, digits[r2], n)
+		writeBuf(stream.buf, digits[r1], n+3)
+		stream.n = n + 6
+		return
+	}
+	r3 := q2 - q3*1000
+	q4 := q3 / 1000
+	if q4 == 0 {
+		n = writeFirstBuf(stream.buf, digits[q3], n)
+		writeBuf(stream.buf, digits[r3], n)
+		writeBuf(stream.buf, digits[r2], n+3)
+		writeBuf(stream.buf, digits[r1], n+6)
+		stream.n = n + 9
+		return
+	}
+	r4 := q3 - q4*1000
+	q5 := q4 / 1000
+	if q5 == 0 {
+		n = writeFirstBuf(stream.buf, digits[q4], n)
+		writeBuf(stream.buf, digits[r4], n)
+		writeBuf(stream.buf, digits[r3], n+3)
+		writeBuf(stream.buf, digits[r2], n+6)
+		writeBuf(stream.buf, digits[r1], n+9)
+		stream.n = n + 12
+		return
+	}
+	r5 := q4 - q5*1000
+	q6 := q5 / 1000
+	if q6 == 0 {
+		n = writeFirstBuf(stream.buf, digits[q5], n)
+	} else {
+		n = writeFirstBuf(stream.buf, digits[q6], n)
+		r6 := q5 - q6*1000
+		writeBuf(stream.buf, digits[r6], n)
+		n += 3
+	}
+	writeBuf(stream.buf, digits[r5], n)
+	writeBuf(stream.buf, digits[r4], n+3)
+	writeBuf(stream.buf, digits[r3], n+6)
+	writeBuf(stream.buf, digits[r2], n+9)
+	writeBuf(stream.buf, digits[r1], n+12)
+	stream.n = n + 15
+}
+
+// WriteInt64 write int64 to stream
+func (stream *Stream) WriteInt64(nval int64) {
+	stream.ensure(20)
+	n := stream.n
+	var val uint64
+	if nval < 0 {
+		val = uint64(-nval)
+		stream.buf[n] = '-'
+		n++
+	} else {
+		val = uint64(nval)
+	}
+	q1 := val / 1000
+	if q1 == 0 {
+		stream.n = writeFirstBuf(stream.buf, digits[val], n)
+		return
+	}
+	r1 := val - q1*1000
+	q2 := q1 / 1000
+	if q2 == 0 {
+		n := writeFirstBuf(stream.buf, digits[q1], n)
+		writeBuf(stream.buf, digits[r1], n)
+		stream.n = n + 3
+		return
+	}
+	r2 := q1 - q2*1000
+	q3 := q2 / 1000
+	if q3 == 0 {
+		n = writeFirstBuf(stream.buf, digits[q2], n)
+		writeBuf(stream.buf, digits[r2], n)
+		writeBuf(stream.buf, digits[r1], n+3)
+		stream.n = n + 6
+		return
+	}
+	r3 := q2 - q3*1000
+	q4 := q3 / 1000
+	if q4 == 0 {
+		n = writeFirstBuf(stream.buf, digits[q3], n)
+		writeBuf(stream.buf, digits[r3], n)
+		writeBuf(stream.buf, digits[r2], n+3)
+		writeBuf(stream.buf, digits[r1], n+6)
+		stream.n = n + 9
+		return
+	}
+	r4 := q3 - q4*1000
+	q5 := q4 / 1000
+	if q5 == 0 {
+		n = writeFirstBuf(stream.buf, digits[q4], n)
+		writeBuf(stream.buf, digits[r4], n)
+		writeBuf(stream.buf, digits[r3], n+3)
+		writeBuf(stream.buf, digits[r2], n+6)
+		writeBuf(stream.buf, digits[r1], n+9)
+		stream.n = n + 12
+		return
+	}
+	r5 := q4 - q5*1000
+	q6 := q5 / 1000
+	if q6 == 0 {
+		n = writeFirstBuf(stream.buf, digits[q5], n)
+	} else {
+		stream.buf[n] = byte(q6 + '0')
+		n++
+		r6 := q5 - q6*1000
+		writeBuf(stream.buf, digits[r6], n)
+		n += 3
+	}
+	writeBuf(stream.buf, digits[r5], n)
+	writeBuf(stream.buf, digits[r4], n+3)
+	writeBuf(stream.buf, digits[r3], n+6)
+	writeBuf(stream.buf, digits[r2], n+9)
+	writeBuf(stream.buf, digits[r1], n+12)
+	stream.n = n + 15
+}
+
+// WriteInt write int to stream
+func (stream *Stream) WriteInt(val int) {
+	stream.WriteInt64(int64(val))
+}
+
+// WriteUint write uint to stream
+func (stream *Stream) WriteUint(val uint) {
+	stream.WriteUint64(uint64(val))
+}

feature_stream_string.go

@@ -0,0 +1,396 @@
+package jsoniter
+
+import (
+	"unicode/utf8"
+)
+
+// htmlSafeSet holds the value true if the ASCII character with the given
+// array position can be safely represented inside a JSON string, embedded
+// inside of HTML <script> tags, without any additional escaping.
+//
+// All values are true except for the ASCII control characters (0-31), the
+// double quote ("), the backslash character ("\"), HTML opening and closing
+// tags ("<" and ">"), and the ampersand ("&").
+var htmlSafeSet = [utf8.RuneSelf]bool{
+	' ':      true,
+	'!':      true,
+	'"':      false,
+	'#':      true,
+	'$':      true,
+	'%':      true,
+	'&':      false,
+	'\'':     true,
+	'(':      true,
+	')':      true,
+	'*':      true,
+	'+':      true,
+	',':      true,
+	'-':      true,
+	'.':      true,
+	'/':      true,
+	'0':      true,
+	'1':      true,
+	'2':      true,
+	'3':      true,
+	'4':      true,
+	'5':      true,
+	'6':      true,
+	'7':      true,
+	'8':      true,
+	'9':      true,
+	':':      true,
+	';':      true,
+	'<':      false,
+	'=':      true,
+	'>':      false,
+	'?':      true,
+	'@':      true,
+	'A':      true,
+	'B':      true,
+	'C':      true,
+	'D':      true,
+	'E':      true,
+	'F':      true,
+	'G':      true,
+	'H':      true,
+	'I':      true,
+	'J':      true,
+	'K':      true,
+	'L':      true,
+	'M':      true,
+	'N':      true,
+	'O':      true,
+	'P':      true,
+	'Q':      true,
+	'R':      true,
+	'S':      true,
+	'T':      true,
+	'U':      true,
+	'V':      true,
+	'W':      true,
+	'X':      true,
+	'Y':      true,
+	'Z':      true,
+	'[':      true,
+	'\\':     false,
+	']':      true,
+	'^':      true,
+	'_':      true,
+	'`':      true,
+	'a':      true,
+	'b':      true,
+	'c':      true,
+	'd':      true,
+	'e':      true,
+	'f':      true,
+	'g':      true,
+	'h':      true,
+	'i':      true,
+	'j':      true,
+	'k':      true,
+	'l':      true,
+	'm':      true,
+	'n':      true,
+	'o':      true,
+	'p':      true,
+	'q':      true,
+	'r':      true,
+	's':      true,
+	't':      true,
+	'u':      true,
+	'v':      true,
+	'w':      true,
+	'x':      true,
+	'y':      true,
+	'z':      true,
+	'{':      true,
+	'|':      true,
+	'}':      true,
+	'~':      true,
+	'\u007f': true,
+}
+
+// safeSet holds the value true if the ASCII character with the given array
+// position can be represented inside a JSON string without any further
+// escaping.
+//
+// All values are true except for the ASCII control characters (0-31), the
+// double quote ("), and the backslash character ("\").
+var safeSet = [utf8.RuneSelf]bool{
+	' ':      true,
+	'!':      true,
+	'"':      false,
+	'#':      true,
+	'$':      true,
+	'%':      true,
+	'&':      true,
+	'\'':     true,
+	'(':      true,
+	')':      true,
+	'*':      true,
+	'+':      true,
+	',':      true,
+	'-':      true,
+	'.':      true,
+	'/':      true,
+	'0':      true,
+	'1':      true,
+	'2':      true,
+	'3':      true,
+	'4':      true,
+	'5':      true,
+	'6':      true,
+	'7':      true,
+	'8':      true,
+	'9':      true,
+	':':      true,
+	';':      true,
+	'<':      true,
+	'=':      true,
+	'>':      true,
+	'?':      true,
+	'@':      true,
+	'A':      true,
+	'B':      true,
+	'C':      true,
+	'D':      true,
+	'E':      true,
+	'F':      true,
+	'G':      true,
+	'H':      true,
+	'I':      true,
+	'J':      true,
+	'K':      true,
+	'L':      true,
+	'M':      true,
+	'N':      true,
+	'O':      true,
+	'P':      true,
+	'Q':      true,
+	'R':      true,
+	'S':      true,
+	'T':      true,
+	'U':      true,
+	'V':      true,
+	'W':      true,
+	'X':      true,
+	'Y':      true,
+	'Z':      true,
+	'[':      true,
+	'\\':     false,
+	']':      true,
+	'^':      true,
+	'_':      true,
+	'`':      true,
+	'a':      true,
+	'b':      true,
+	'c':      true,
+	'd':      true,
+	'e':      true,
+	'f':      true,
+	'g':      true,
+	'h':      true,
+	'i':      true,
+	'j':      true,
+	'k':      true,
+	'l':      true,
+	'm':      true,
+	'n':      true,
+	'o':      true,
+	'p':      true,
+	'q':      true,
+	'r':      true,
+	's':      true,
+	't':      true,
+	'u':      true,
+	'v':      true,
+	'w':      true,
+	'x':      true,
+	'y':      true,
+	'z':      true,
+	'{':      true,
+	'|':      true,
+	'}':      true,
+	'~':      true,
+	'\u007f': true,
+}
+
+var hex = "0123456789abcdef"
+
+// WriteStringWithHTMLEscaped write string to stream with html special characters escaped
+func (stream *Stream) WriteStringWithHTMLEscaped(s string) {
+	stream.ensure(32)
+	valLen := len(s)
+	toWriteLen := valLen
+	bufLengthMinusTwo := len(stream.buf) - 2 // make room for the quotes
+	if stream.n+toWriteLen > bufLengthMinusTwo {
+		toWriteLen = bufLengthMinusTwo - stream.n
+	}
+	n := stream.n
+	stream.buf[n] = '"'
+	n++
+	// write string, the fast path, without utf8 and escape support
+	i := 0
+	for ; i < toWriteLen; i++ {
+		c := s[i]
+		if c < utf8.RuneSelf && htmlSafeSet[c] {
+			stream.buf[n] = c
+			n++
+		} else {
+			break
+		}
+	}
+	if i == valLen {
+		stream.buf[n] = '"'
+		n++
+		stream.n = n
+		return
+	}
+	stream.n = n
+	writeStringSlowPathWithHTMLEscaped(stream, i, s, valLen)
+}
+
+func writeStringSlowPathWithHTMLEscaped(stream *Stream, i int, s string, valLen int) {
+	start := i
+	// for the remaining parts, we process them char by char
+	for i < valLen {
+		if b := s[i]; b < utf8.RuneSelf {
+			if htmlSafeSet[b] {
+				i++
+				continue
+			}
+			if start < i {
+				stream.WriteRaw(s[start:i])
+			}
+			switch b {
+			case '\\', '"':
+				stream.writeTwoBytes('\\', b)
+			case '\n':
+				stream.writeTwoBytes('\\', 'n')
+			case '\r':
+				stream.writeTwoBytes('\\', 'r')
+			case '\t':
+				stream.writeTwoBytes('\\', 't')
+			default:
+				// This encodes bytes < 0x20 except for \t, \n and \r.
+				// If escapeHTML is set, it also escapes <, >, and &
+				// because they can lead to security holes when
+				// user-controlled strings are rendered into JSON
+				// and served to some browsers.
+				stream.WriteRaw(`\u00`)
+				stream.writeTwoBytes(hex[b>>4], hex[b&0xF])
+			}
+			i++
+			start = i
+			continue
+		}
+		c, size := utf8.DecodeRuneInString(s[i:])
+		if c == utf8.RuneError && size == 1 {
+			if start < i {
+				stream.WriteRaw(s[start:i])
+			}
+			stream.WriteRaw(`\ufffd`)
+			i++
+			start = i
+			continue
+		}
+		// U+2028 is LINE SEPARATOR.
+		// U+2029 is PARAGRAPH SEPARATOR.
+		// They are both technically valid characters in JSON strings,
+		// but don't work in JSONP, which has to be evaluated as JavaScript,
+		// and can lead to security holes there. It is valid JSON to
+		// escape them, so we do so unconditionally.
+		// See http://timelessrepo.com/json-isnt-a-javascript-subset for discussion.
+		if c == '\u2028' || c == '\u2029' {
+			if start < i {
+				stream.WriteRaw(s[start:i])
+			}
+			stream.WriteRaw(`\u202`)
+			stream.writeByte(hex[c&0xF])
+			i += size
+			start = i
+			continue
+		}
+		i += size
+	}
+	if start < len(s) {
+		stream.WriteRaw(s[start:])
+	}
+	stream.writeByte('"')
+}
+
+// WriteString write string to stream without html escape
+func (stream *Stream) WriteString(s string) {
+	stream.ensure(32)
+	valLen := len(s)
+	toWriteLen := valLen
+	bufLengthMinusTwo := len(stream.buf) - 2 // make room for the quotes
+	if stream.n+toWriteLen > bufLengthMinusTwo {
+		toWriteLen = bufLengthMinusTwo - stream.n
+	}
+	n := stream.n
+	stream.buf[n] = '"'
+	n++
+	// write string, the fast path, without utf8 and escape support
+	i := 0
+	for ; i < toWriteLen; i++ {
+		c := s[i]
+		if c > 31 && c != '"' && c != '\\' {
+			stream.buf[n] = c
+			n++
+		} else {
+			break
+		}
+	}
+	if i == valLen {
+		stream.buf[n] = '"'
+		n++
+		stream.n = n
+		return
+	}
+	stream.n = n
+	writeStringSlowPath(stream, i, s, valLen)
+}
+
+func writeStringSlowPath(stream *Stream, i int, s string, valLen int) {
+	start := i
+	// for the remaining parts, we process them char by char
+	for i < valLen {
+		if b := s[i]; b < utf8.RuneSelf {
+			if safeSet[b] {
+				i++
+				continue
+			}
+			if start < i {
+				stream.WriteRaw(s[start:i])
+			}
+			switch b {
+			case '\\', '"':
+				stream.writeTwoBytes('\\', b)
+			case '\n':
+				stream.writeTwoBytes('\\', 'n')
+			case '\r':
+				stream.writeTwoBytes('\\', 'r')
+			case '\t':
+				stream.writeTwoBytes('\\', 't')
+			default:
+				// This encodes bytes < 0x20 except for \t, \n and \r.
+				// If escapeHTML is set, it also escapes <, >, and &
+				// because they can lead to security holes when
+				// user-controlled strings are rendered into JSON
+				// and served to some browsers.
+				stream.WriteRaw(`\u00`)
+				stream.writeTwoBytes(hex[b>>4], hex[b&0xF])
+			}
+			i++
+			start = i
+			continue
+		}
+		i++
+		continue
+	}
+	if start < len(s) {
+		stream.WriteRaw(s[start:])
+	}
+	stream.writeByte('"')
+}

fuzzy_mode_convert_table.md

@@ -0,0 +1,7 @@
+| json type \ dest type | bool | int | uint | float |string|
+| --- | --- | --- | --- |--|--|
+| number | positive => true <br/> negative => true <br/> zero => false| 23.2 => 23 <br/> -32.1 => -32| 12.1 => 12 <br/> -12.1 => 0|as normal|same as origin|
+| string | empty string => false <br/> string "0" => false <br/> other strings => true | "123.32" => 123 <br/> "-123.4" => -123 <br/> "123.23xxxw" => 123 <br/>  "abcde12" => 0 <br/> "-32.1" => -32| 13.2 => 13 <br/> -1.1 => 0 |12.1 => 12.1 <br/> -12.3 => -12.3<br/> 12.4xxa => 12.4 <br/> +1.1e2 =>110 |same as origin|
+| bool | true => true <br/> false => false| true => 1 <br/> false => 0 | true => 1 <br/> false => 0 |true => 1 <br/>false => 0|true => "true" <br/> false => "false"|
+| object | true | 0 | 0 |0|originnal json|
+| array | empty array => false <br/> nonempty array => true| [] => 0 <br/> [1,2] => 1 | [] => 0 <br/> [1,2] => 1 |[] => 0<br/>[1,2] => 1|original json|

jsoniter.go

@@ -1,916 +1,18 @@
+// Package jsoniter implements encoding and decoding of JSON as defined in
+// RFC 4627 and provides interfaces with identical syntax of standard lib encoding/json.
+// Converting from encoding/json to jsoniter is no more than replacing the package with jsoniter
+// and variable type declarations (if any).
+// jsoniter interfaces gives 100% compatibility with code using standard lib.
+//
+// "JSON and Go"
+// (https://golang.org/doc/articles/json_and_go.html)
+// gives a description of how Marshal/Unmarshal operate
+// between arbitrary or predefined json objects and bytes,
+// and it applies to jsoniter.Marshal/Unmarshal as well.
+//
+// Besides, jsoniter.Iterator provides a different set of interfaces
+// iterating given bytes/string/reader
+// and yielding parsed elements one by one.
+// This set of interfaces reads input as required and gives
+// better performance.
 package jsoniter
-
-import (
-	"io"
-	"fmt"
-	"unicode/utf16"
-	"strconv"
-	"unsafe"
-	"encoding/base64"
-)
-
-type ValueType int
-
-const (
-	Invalid ValueType = iota
-	String
-	Number
-	Null
-	Bool
-	Array
-	Object
-)
-
-var digits []byte
-var valueTypes []ValueType
-
-func init() {
-	digits = make([]byte, 256)
-	for i := 0; i < len(digits); i++ {
-		digits[i] = 255
-	}
-	for i := '0'; i <= '9'; i++ {
-		digits[i] = byte(i - '0');
-	}
-	for i := 'a'; i <= 'f'; i++ {
-		digits[i] = byte((i - 'a') + 10);
-	}
-	for i := 'A'; i <= 'F'; i++ {
-		digits[i] = byte((i - 'A') + 10);
-	}
-	valueTypes = make([]ValueType, 256)
-	for i := 0; i < len(valueTypes); i++ {
-		valueTypes[i] = Invalid
-	}
-	valueTypes['"'] = String;
-	valueTypes['-'] = Number;
-	valueTypes['0'] = Number;
-	valueTypes['1'] = Number;
-	valueTypes['2'] = Number;
-	valueTypes['3'] = Number;
-	valueTypes['4'] = Number;
-	valueTypes['5'] = Number;
-	valueTypes['6'] = Number;
-	valueTypes['7'] = Number;
-	valueTypes['8'] = Number;
-	valueTypes['9'] = Number;
-	valueTypes['t'] = Bool;
-	valueTypes['f'] = Bool;
-	valueTypes['n'] = Null;
-	valueTypes['['] = Array;
-	valueTypes['{'] = Object;
-}
-
-type Iterator struct {
-	reader io.Reader
-	buf    []byte
-	head   int
-	tail   int
-	Error  error
-}
-
-func Parse(reader io.Reader, bufSize int) *Iterator {
-	iter := &Iterator{
-		reader: reader,
-		buf: make([]byte, bufSize),
-		head: 0,
-		tail: 0,
-	}
-	iter.skipWhitespaces()
-	return iter
-}
-
-func ParseBytes(input []byte) *Iterator {
-	iter := &Iterator{
-		reader: nil,
-		buf: input,
-		head: 0,
-		tail: len(input),
-	}
-	iter.skipWhitespaces()
-	return iter
-}
-
-func ParseString(input string) *Iterator {
-	return ParseBytes([]byte(input))
-}
-
-func (iter *Iterator) Reset(reader io.Reader) *Iterator {
-	iter.reader = reader
-	iter.head = 0
-	iter.tail = 0
-	iter.skipWhitespaces()
-	return iter
-}
-
-func (iter *Iterator) ResetBytes(input []byte) *Iterator {
-	// only for benchmarking
-	iter.reader = nil
-	iter.Error = nil
-	iter.buf = input
-	iter.head = 0
-	iter.tail = len(input)
-	iter.skipWhitespaces()
-	return iter
-}
-
-func (iter *Iterator) WhatIsNext() ValueType {
-	valueType := valueTypes[iter.readByte()];
-	iter.unreadByte();
-	return valueType;
-}
-
-func (iter *Iterator) skipWhitespaces() {
-	for {
-		for i := iter.head; i < iter.tail; i++ {
-			c := iter.buf[i]
-			switch c {
-			case ' ', '\n', '\t', '\r':
-				continue
-			}
-			iter.head = i
-			return
-		}
-		if !iter.loadMore() {
-			return
-		}
-	}
-}
-
-func (iter *Iterator) skipWhitespacesWithoutLoadMore() bool {
-	for i := iter.head; i < iter.tail; i++ {
-		c := iter.buf[i]
-		switch c {
-		case ' ', '\n', '\t', '\r':
-			continue
-		}
-		iter.head = i
-		return false
-	}
-	return true
-}
-
-func (iter *Iterator) nextToken() byte {
-	// a variation of skip whitespaces, returning the next non-whitespace token
-	for {
-		for i := iter.head; i < iter.tail; i++ {
-			c := iter.buf[i]
-			switch c {
-			case ' ', '\n', '\t', 'r':
-				continue
-			}
-			iter.head = i+1
-			return c
-		}
-		if !iter.loadMore() {
-			return 0
-		}
-	}
-}
-
-func (iter *Iterator) ReportError(operation string, msg string) {
-	if iter.Error != nil {
-		return
-	}
-	peekStart := iter.head - 10
-	if peekStart < 0 {
-		peekStart = 0
-	}
-	iter.Error = fmt.Errorf("%s: %s, parsing %v ...%s... at %s", operation, msg, iter.head,
-		string(iter.buf[peekStart: iter.head]), string(iter.buf[0:iter.tail]))
-}
-
-func (iter *Iterator) CurrentBuffer() string {
-	peekStart := iter.head - 10
-	if peekStart < 0 {
-		peekStart = 0
-	}
-	return fmt.Sprintf("parsing %v ...|%s|... at %s", iter.head,
-		string(iter.buf[peekStart: iter.head]), string(iter.buf[0:iter.tail]))
-}
-
-func (iter *Iterator) readByte() (ret byte) {
-	if iter.head == iter.tail {
-		if iter.loadMore() {
-			ret = iter.buf[iter.head]
-			iter.head++
-			return ret
-		} else {
-			return 0
-		}
-	}
-	ret = iter.buf[iter.head]
-	iter.head++
-	return ret
-}
-
-func (iter *Iterator) loadMore() bool {
-	if iter.reader == nil {
-		iter.Error = io.EOF
-		return false
-	}
-	for {
-		n, err := iter.reader.Read(iter.buf)
-		if n == 0 {
-			if err != nil {
-				iter.Error = err
-				return false
-			} else {
-				// n == 0, err == nil is not EOF
-				continue
-			}
-		} else {
-			iter.head = 0
-			iter.tail = n
-			return true
-		}
-	}
-}
-
-func (iter *Iterator) unreadByte() {
-	if iter.head == 0 {
-		iter.ReportError("unreadByte", "unread too many bytes")
-		return
-	}
-	iter.head -= 1
-	return
-}
-
-const maxUint64 = (1 << 64 - 1)
-const cutoffUint64 = maxUint64 / 10 + 1
-const maxUint32 = (1 << 32 - 1)
-const cutoffUint32 = maxUint32 / 10 + 1
-
-func (iter *Iterator) ReadUint() (ret uint) {
-	val := iter.ReadUint64()
-	converted := uint(val)
-	if uint64(converted) != val {
-		iter.ReportError("ReadUint", "int overflow")
-		return
-	}
-	return converted
-}
-
-func (iter *Iterator) ReadUint8() (ret uint8) {
-	val := iter.ReadUint64()
-	converted := uint8(val)
-	if uint64(converted) != val {
-		iter.ReportError("ReadUint8", "int overflow")
-		return
-	}
-	return converted
-}
-
-func (iter *Iterator) ReadUint16() (ret uint16) {
-	val := iter.ReadUint64()
-	converted := uint16(val)
-	if uint64(converted) != val {
-		iter.ReportError("ReadUint16", "int overflow")
-		return
-	}
-	return converted
-}
-
-func (iter *Iterator) ReadUint32() (ret uint32) {
-	val := iter.ReadUint64()
-	converted := uint32(val)
-	if uint64(converted) != val {
-		iter.ReportError("ReadUint32", "int overflow")
-		return
-	}
-	return converted
-}
-
-func (iter *Iterator) ReadUint64() (ret uint64) {
-	c := iter.readByte()
-	v := digits[c]
-	if v == 0 {
-		return 0 // single zero
-	}
-	if v == 255 {
-		iter.ReportError("ReadUint64", "unexpected character")
-		return
-	}
-	for {
-		if ret >= cutoffUint64 {
-			iter.ReportError("ReadUint64", "overflow")
-			return
-		}
-		ret = ret * 10 + uint64(v)
-		c = iter.readByte()
-		v = digits[c]
-		if v == 255 {
-			iter.unreadByte()
-			break
-		}
-	}
-	return ret
-}
-
-func (iter *Iterator) ReadInt() (ret int) {
-	val := iter.ReadInt64()
-	converted := int(val)
-	if int64(converted) != val {
-		iter.ReportError("ReadInt", "int overflow")
-		return
-	}
-	return converted
-}
-
-func (iter *Iterator) ReadInt8() (ret int8) {
-	val := iter.ReadInt64()
-	converted := int8(val)
-	if int64(converted) != val {
-		iter.ReportError("ReadInt8", "int overflow")
-		return
-	}
-	return converted
-}
-
-func (iter *Iterator) ReadInt16() (ret int16) {
-	val := iter.ReadInt64()
-	converted := int16(val)
-	if int64(converted) != val {
-		iter.ReportError("ReadInt16", "int overflow")
-		return
-	}
-	return converted
-}
-
-func (iter *Iterator) ReadInt32() (ret int32) {
-	val := iter.ReadInt64()
-	converted := int32(val)
-	if int64(converted) != val {
-		iter.ReportError("ReadInt32", "int overflow")
-		return
-	}
-	return converted
-}
-
-func (iter *Iterator) ReadInt64() (ret int64) {
-	c := iter.readByte()
-	if iter.Error != nil {
-		return
-	}
-
-	/* optional leading minus */
-	if c == '-' {
-		n := iter.ReadUint64()
-		return -int64(n)
-	} else {
-		iter.unreadByte()
-		n := iter.ReadUint64()
-		return int64(n)
-	}
-}
-
-func (iter *Iterator) ReadString() (ret string) {
-	return string(iter.readStringAsBytes())
-}
-
-
-func (iter *Iterator) readStringAsBytes() (ret []byte) {
-	c := iter.readByte()
-	if c == 'n' {
-		iter.skipUntilBreak()
-		return
-	}
-	if c != '"' {
-		iter.ReportError("ReadString", `expects " or n`)
-		return
-	}
-	end := iter.findStringEndWithoutEscape()
-	if end != -1 {
-		// fast path: reuse the underlying buffer
-		ret = iter.buf[iter.head:end-1]
-		iter.head = end
-		return ret
-	}
-	str := make([]byte, 0, 8)
-	for iter.Error == nil {
-		c = iter.readByte()
-		if c == '"' {
-			return str
-		}
-		if c == '\\' {
-			c = iter.readByte()
-			if iter.Error != nil {
-				return
-			}
-			switch c {
-			case 'u':
-				r := iter.readU4()
-				if iter.Error != nil {
-					return
-				}
-				if utf16.IsSurrogate(r) {
-					c = iter.readByte()
-					if iter.Error != nil {
-						return
-					}
-					if c != '\\' {
-						iter.ReportError("ReadString",
-							`expects \u after utf16 surrogate, but \ not found`)
-						return
-					}
-					c = iter.readByte()
-					if iter.Error != nil {
-						return
-					}
-					if c != 'u' {
-						iter.ReportError("ReadString",
-							`expects \u after utf16 surrogate, but \u not found`)
-						return
-					}
-					r2 := iter.readU4()
-					if iter.Error != nil {
-						return
-					}
-					combined := utf16.DecodeRune(r, r2)
-					str = appendRune(str, combined)
-				} else {
-					str = appendRune(str, r)
-				}
-			case '"':
-				str = append(str, '"')
-			case '\\':
-				str = append(str, '\\')
-			case '/':
-				str = append(str, '/')
-			case 'b':
-				str = append(str, '\b')
-			case 'f':
-				str = append(str, '\f')
-			case 'n':
-				str = append(str, '\n')
-			case 'r':
-				str = append(str, '\r')
-			case 't':
-				str = append(str, '\t')
-			default:
-				iter.ReportError("ReadString",
-					`invalid escape char after \`)
-				return
-			}
-		} else {
-			str = append(str, c)
-		}
-	}
-	return
-}
-
-func (iter *Iterator) readU4() (ret rune) {
-	for i := 0; i < 4; i++ {
-		c := iter.readByte()
-		if iter.Error != nil {
-			return
-		}
-		if (c >= '0' && c <= '9') {
-			if ret >= cutoffUint32 {
-				iter.ReportError("readU4", "overflow")
-				return
-			}
-			ret = ret * 16 + rune(c - '0')
-		} else if ((c >= 'a' && c <= 'f') ) {
-			if ret >= cutoffUint32 {
-				iter.ReportError("readU4", "overflow")
-				return
-			}
-			ret = ret * 16 + rune(c - 'a' + 10)
-		} else {
-			iter.ReportError("readU4", "expects 0~9 or a~f")
-			return
-		}
-	}
-	return ret
-}
-
-const (
-	t1 = 0x00 // 0000 0000
-	tx = 0x80 // 1000 0000
-	t2 = 0xC0 // 1100 0000
-	t3 = 0xE0 // 1110 0000
-	t4 = 0xF0 // 1111 0000
-	t5 = 0xF8 // 1111 1000
-
-	maskx = 0x3F // 0011 1111
-	mask2 = 0x1F // 0001 1111
-	mask3 = 0x0F // 0000 1111
-	mask4 = 0x07 // 0000 0111
-
-	rune1Max = 1 << 7 - 1
-	rune2Max = 1 << 11 - 1
-	rune3Max = 1 << 16 - 1
-
-	surrogateMin = 0xD800
-	surrogateMax = 0xDFFF
-
-	MaxRune = '\U0010FFFF' // Maximum valid Unicode code point.
-	RuneError = '\uFFFD'     // the "error" Rune or "Unicode replacement character"
-)
-
-func appendRune(p []byte, r rune) []byte {
-	// Negative values are erroneous. Making it unsigned addresses the problem.
-	switch i := uint32(r); {
-	case i <= rune1Max:
-		p = append(p, byte(r))
-		return p
-	case i <= rune2Max:
-		p = append(p, t2 | byte(r >> 6))
-		p = append(p, tx | byte(r) & maskx)
-		return p
-	case i > MaxRune, surrogateMin <= i && i <= surrogateMax:
-		r = RuneError
-		fallthrough
-	case i <= rune3Max:
-		p = append(p, t3 | byte(r >> 12))
-		p = append(p, tx | byte(r >> 6) & maskx)
-		p = append(p, tx | byte(r) & maskx)
-		return p
-	default:
-		p = append(p, t4 | byte(r >> 18))
-		p = append(p, tx | byte(r >> 12) & maskx)
-		p = append(p, tx | byte(r >> 6) & maskx)
-		p = append(p, tx | byte(r) & maskx)
-		return p
-	}
-}
-
-func (iter *Iterator) ReadArray() (ret bool) {
-	c := iter.nextToken()
-	if iter.Error != nil {
-		return
-	}
-	switch c {
-	case 'n': {
-		iter.skipUntilBreak()
-		return false // null
-	}
-	case '[': {
-		c = iter.nextToken()
-		if iter.Error != nil {
-			return
-		}
-		if c == ']' {
-			return false
-		} else {
-			iter.unreadByte()
-			return true
-		}
-	}
-	case ']': return false
-	case ',':
-		iter.skipWhitespaces()
-		return true
-	default:
-		iter.ReportError("ReadArray", "expect [ or , or ] or n")
-		return
-	}
-}
-
-func (iter *Iterator) ReadObject() (ret string) {
-	c := iter.nextToken()
-	if iter.Error != nil {
-		return
-	}
-	switch c {
-	case 'n': {
-		iter.skipUntilBreak()
-		if iter.Error != nil {
-			return
-		}
-		return "" // null
-	}
-	case '{': {
-		c = iter.nextToken()
-		if iter.Error != nil {
-			return
-		}
-		switch c {
-		case '}':
-			return "" // end of object
-		case '"':
-			iter.unreadByte()
-			return iter.readObjectField()
-		default:
-			iter.ReportError("ReadObject", `expect " after {`)
-			return
-		}
-	}
-	case ',':
-		iter.skipWhitespaces()
-		return iter.readObjectField()
-	case '}':
-		return "" // end of object
-	default:
-		iter.ReportError("ReadObject", `expect { or , or } or n`)
-		return
-	}
-}
-
-func (iter *Iterator) readObjectField() (ret string) {
-	str := iter.readStringAsBytes()
-	if iter.skipWhitespacesWithoutLoadMore() {
-		if ret == "" {
-			ret = string(str);
-		}
-		if !iter.loadMore() {
-			return
-		}
-	}
-	if iter.buf[iter.head] != ':' {
-		iter.ReportError("ReadObject", "expect : after object field")
-		return
-	}
-	iter.head++
-	if iter.skipWhitespacesWithoutLoadMore() {
-		if ret == "" {
-			ret = string(str);
-		}
-		if !iter.loadMore() {
-			return
-		}
-	}
-	if ret == "" {
-		return *(*string)(unsafe.Pointer(&str))
-	}
-	return ret
-}
-
-func (iter *Iterator) ReadFloat32() (ret float32) {
-	strBuf := [8]byte{}
-	str := strBuf[0:0]
-	hasMore := true
-	for(hasMore) {
-		for i := iter.head; i < iter.tail; i++ {
-			c := iter.buf[i]
-			switch c {
-			case '-', '+', '.', 'e', 'E', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
-				str = append(str, c)
-				continue
-			default:
-				hasMore = false
-				break
-			}
-		}
-		if hasMore {
-			if !iter.loadMore() {
-				break
-			}
-		}
-	}
-	if iter.Error != nil && iter.Error != io.EOF {
-		return
-	}
-	val, err := strconv.ParseFloat(*(*string)(unsafe.Pointer(&str)), 32)
-	if err != nil {
-		iter.Error = err
-		return
-	}
-	return float32(val)
-}
-
-func (iter *Iterator) ReadFloat64() (ret float64) {
-	strBuf := [8]byte{}
-	str := strBuf[0:0]
-	hasMore := true
-	for(hasMore) {
-		for i := iter.head; i < iter.tail; i++ {
-			c := iter.buf[i]
-			switch c {
-			case '-', '+', '.', 'e', 'E', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
-				str = append(str, c)
-				continue
-			default:
-				hasMore = false
-				break
-			}
-		}
-		if hasMore {
-			if !iter.loadMore() {
-				break
-			}
-		}
-	}
-	if iter.Error != nil && iter.Error != io.EOF {
-		return
-	}
-	val, err := strconv.ParseFloat(*(*string)(unsafe.Pointer(&str)), 64)
-	if err != nil {
-		iter.Error = err
-		return
-	}
-	return val
-}
-
-func (iter *Iterator) ReadBool() (ret bool) {
-	c := iter.readByte()
-	if iter.Error != nil {
-		return
-	}
-	switch c {
-	case 't':
-		iter.skipUntilBreak()
-		return true
-	case 'f':
-		iter.skipUntilBreak()
-		return false
-	default:
-		iter.ReportError("ReadBool", "expect t or f")
-		return
-	}
-}
-
-func (iter *Iterator) ReadBase64() (ret []byte) {
-	src := iter.readStringAsBytes()
-	if iter.Error != nil {
-		return
-	}
-	b64 := base64.StdEncoding
-	ret = make([]byte, b64.DecodedLen(len(src)))
-	n, err := b64.Decode(ret, src)
-	if err != nil {
-		iter.Error = err
-		return
-	}
-	return ret[:n]
-}
-
-func (iter *Iterator) ReadNull() (ret bool) {
-	c := iter.readByte()
-	if c == 'n' {
-		iter.skipUntilBreak()
-		return true
-	}
-	iter.unreadByte()
-	return false
-}
-
-func (iter *Iterator) Skip() {
-	c := iter.readByte()
-	switch c {
-	case '"':
-		iter.skipString()
-	case '-', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 't', 'f', 'n':
-		iter.skipUntilBreak()
-	case '[':
-		iter.skipArray()
-	case '{':
-		iter.skipObject()
-	default:
-		iter.ReportError("Skip", fmt.Sprintf("do not know how to skip: %v", c))
-		return
-	}
-}
-
-func (iter *Iterator) skipString() {
-	for {
-		end, escaped := iter.findStringEnd()
-		if end == -1 {
-			if !iter.loadMore() {
-				return
-			}
-			if escaped {
-				iter.head = 1 // skip the first char as last char read is \
-			}
-		} else {
-			iter.head = end
-			return
-		}
-	}
-}
-
-
-// adapted from: https://github.com/buger/jsonparser/blob/master/parser.go
-// Tries to find the end of string
-// Support if string contains escaped quote symbols.
-func (iter *Iterator) findStringEnd() (int, bool) {
-	escaped := false
-	for i := iter.head; i < iter.tail; i++ {
-		c := iter.buf[i]
-		if c == '"' {
-			if !escaped {
-				return i + 1, false
-			} else {
-				j := i - 1
-				for {
-					if j < iter.head || iter.buf[j] != '\\' {
-						// even number of backslashes
-						// either end of buffer, or " found
-						return i + 1, true
-					}
-					j--
-					if j < iter.head || iter.buf[j] != '\\' {
-						// odd number of backslashes
-						// it is \" or \\\"
-						break
-					}
-					j--
-				}
-			}
-		} else if c == '\\' {
-			escaped = true
-		}
-	}
-	j := iter.tail - 1
-	for {
-		if j < iter.head || iter.buf[j] != '\\' {
-			// even number of backslashes
-			// either end of buffer, or " found
-			return -1, false // do not end with \
-		}
-		j--
-		if j < iter.head || iter.buf[j] != '\\' {
-			// odd number of backslashes
-			// it is \" or \\\"
-			break
-		}
-		j--
-
-	}
-	return -1, true // end with \
-}
-
-
-func (iter *Iterator) findStringEndWithoutEscape() int {
-	for i := iter.head; i < iter.tail; i++ {
-		c := iter.buf[i]
-		if c == '"' {
-			return i + 1
-		} else if c == '\\' {
-			return -1
-		}
-	}
-	return -1
-}
-
-func (iter *Iterator) skipArray() {
-	level := 1
-	for {
-		for i := iter.head; i < iter.tail; i++ {
-			switch iter.buf[i] {
-			case '"': // If inside string, skip it
-				iter.head = i + 1
-				iter.skipString()
-				i = iter.head - 1 // it will be i++ soon
-			case '[': // If open symbol, increase level
-				level++
-			case ']': // If close symbol, increase level
-				level--
-
-				// If we have returned to the original level, we're done
-				if level == 0 {
-					iter.head = i + 1
-					return
-				}
-			}
-		}
-		if (!iter.loadMore()) {
-			return
-		}
-	}
-}
-
-func (iter *Iterator) skipObject() {
-	level := 1
-	for {
-		for i := iter.head; i < iter.tail; i++ {
-			switch iter.buf[i] {
-			case '"': // If inside string, skip it
-				iter.head = i + 1
-				iter.skipString()
-				i = iter.head - 1 // it will be i++ soon
-			case '{': // If open symbol, increase level
-				level++
-			case '}': // If close symbol, increase level
-				level--
-
-				// If we have returned to the original level, we're done
-				if level == 0 {
-					iter.head = i + 1
-					return
-				}
-			}
-		}
-		if (!iter.loadMore()) {
-			return
-		}
-	}
-}
-
-func (iter *Iterator) skipUntilBreak() {
-	// true, false, null, number
-	for {
-		for i := iter.head; i < iter.tail; i++ {
-			c := iter.buf[i]
-			switch c {
-			case ' ', '\n', '\r', '\t', ',', '}', ']':
-				iter.head = i
-				return
-			}
-		}
-		if (!iter.loadMore()) {
-			return
-		}
-	}
-}

jsoniter_1dot8_only_test.go

@@ -0,0 +1,45 @@
+// +build go1.8
+
+package jsoniter
+
+import (
+	"bytes"
+	"encoding/json"
+	"testing"
+	"unicode/utf8"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_new_encoder(t *testing.T) {
+	should := require.New(t)
+	buf1 := &bytes.Buffer{}
+	encoder1 := json.NewEncoder(buf1)
+	encoder1.SetEscapeHTML(false)
+	encoder1.Encode([]int{1})
+	should.Equal("[1]\n", buf1.String())
+	buf2 := &bytes.Buffer{}
+	encoder2 := NewEncoder(buf2)
+	encoder2.SetEscapeHTML(false)
+	encoder2.Encode([]int{1})
+	should.Equal("[1]", buf2.String())
+}
+
+func Test_string_encode_with_std_without_html_escape(t *testing.T) {
+	api := Config{EscapeHTML: false}.Froze()
+	should := require.New(t)
+	for i := 0; i < utf8.RuneSelf; i++ {
+		input := string([]byte{byte(i)})
+		buf := &bytes.Buffer{}
+		encoder := json.NewEncoder(buf)
+		encoder.SetEscapeHTML(false)
+		err := encoder.Encode(input)
+		should.Nil(err)
+		stdOutput := buf.String()
+		stdOutput = stdOutput[:len(stdOutput)-1]
+		jsoniterOutputBytes, err := api.Marshal(input)
+		should.Nil(err)
+		jsoniterOutput := string(jsoniterOutputBytes)
+		should.Equal(stdOutput, jsoniterOutput)
+	}
+}

jsoniter_adapter.go

@@ -1,14 +0,0 @@
-package jsoniter
-
-import "io"
-
-// adapt to json/encoding api
-
-func Unmarshal(data []byte, v interface{}) error {
-	iter := ParseBytes(data)
-	iter.Read(v)
-	if iter.Error == io.EOF {
-		return nil
-	}
-	return iter.Error
-}

jsoniter_adapter_test.go

@@ -0,0 +1,84 @@
+package jsoniter
+
+import (
+	"bytes"
+	"encoding/json"
+	"github.com/stretchr/testify/require"
+	"io/ioutil"
+	"testing"
+)
+
+func Test_new_decoder(t *testing.T) {
+	should := require.New(t)
+	decoder1 := json.NewDecoder(bytes.NewBufferString(`[1][2]`))
+	decoder2 := NewDecoder(bytes.NewBufferString(`[1][2]`))
+	arr1 := []int{}
+	should.Nil(decoder1.Decode(&arr1))
+	should.Equal([]int{1}, arr1)
+	arr2 := []int{}
+	should.True(decoder1.More())
+	buffered, _ := ioutil.ReadAll(decoder1.Buffered())
+	should.Equal("[2]", string(buffered))
+	should.Nil(decoder2.Decode(&arr2))
+	should.Equal([]int{1}, arr2)
+	should.True(decoder2.More())
+	buffered, _ = ioutil.ReadAll(decoder2.Buffered())
+	should.Equal("[2]", string(buffered))
+
+	should.Nil(decoder1.Decode(&arr1))
+	should.Equal([]int{2}, arr1)
+	should.False(decoder1.More())
+	should.Nil(decoder2.Decode(&arr2))
+	should.Equal([]int{2}, arr2)
+	should.False(decoder2.More())
+}
+
+func Test_use_number(t *testing.T) {
+	should := require.New(t)
+	decoder1 := json.NewDecoder(bytes.NewBufferString(`123`))
+	decoder1.UseNumber()
+	decoder2 := NewDecoder(bytes.NewBufferString(`123`))
+	decoder2.UseNumber()
+	var obj1 interface{}
+	should.Nil(decoder1.Decode(&obj1))
+	should.Equal(json.Number("123"), obj1)
+	var obj2 interface{}
+	should.Nil(decoder2.Decode(&obj2))
+	should.Equal(json.Number("123"), obj2)
+}
+
+func Test_use_number_for_unmarshal(t *testing.T) {
+	should := require.New(t)
+	api := Config{UseNumber: true}.Froze()
+	var obj interface{}
+	should.Nil(api.UnmarshalFromString("123", &obj))
+	should.Equal(json.Number("123"), obj)
+}
+
+func Test_marshal_indent(t *testing.T) {
+	should := require.New(t)
+	obj := struct {
+		F1 int
+		F2 []int
+	}{1, []int{2, 3, 4}}
+	output, err := json.MarshalIndent(obj, "", "  ")
+	should.Nil(err)
+	should.Equal("{\n  \"F1\": 1,\n  \"F2\": [\n    2,\n    3,\n    4\n  ]\n}", string(output))
+	output, err = MarshalIndent(obj, "", "  ")
+	should.Nil(err)
+	should.Equal("{\n  \"F1\": 1,\n  \"F2\": [\n    2,\n    3,\n    4\n  ]\n}", string(output))
+}
+
+func Test_marshal_indent_map(t *testing.T) {
+	should := require.New(t)
+	obj := map[int]int{1: 2}
+	output, err := json.MarshalIndent(obj, "", "  ")
+	should.Nil(err)
+	should.Equal("{\n  \"1\": 2\n}", string(output))
+	output, err = MarshalIndent(obj, "", "  ")
+	should.Nil(err)
+	should.Equal("{\n  \"1\": 2\n}", string(output))
+	output, err = ConfigCompatibleWithStandardLibrary.MarshalIndent(obj, "", "  ")
+	should.Nil(err)
+	should.Equal("{\n  \"1\": 2\n}", string(output))
+}

jsoniter_alias_test.go

@@ -0,0 +1,62 @@
+package jsoniter
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_alias(t *testing.T) {
+	should := require.New(t)
+	type myint int
+	type myint8 int8
+	type myint16 int16
+	type myint32 int32
+	type myint64 int64
+	type myuint uint
+	type myuint8 uint8
+	type myuint16 uint16
+	type myuint32 uint32
+	type myuint64 uint64
+	type myfloat32 float32
+	type myfloat64 float64
+	type mystring string
+	type mybool bool
+	type myuintptr uintptr
+	var a struct {
+		A myint8    `json:"a"`
+		B myint16   `json:"stream"`
+		C myint32   `json:"c"`
+		D myint64   `json:"d"`
+		E myuint8   `json:"e"`
+		F myuint16  `json:"f"`
+		G myuint32  `json:"g"`
+		H myuint64  `json:"h"`
+		I myfloat32 `json:"i"`
+		J myfloat64 `json:"j"`
+		K mystring  `json:"k"`
+		L myint     `json:"l"`
+		M myuint    `json:"m"`
+		N mybool    `json:"n"`
+		O myuintptr `json:"o"`
+	}
+
+	should.Nil(UnmarshalFromString(`{"a" : 1, "stream" : 1, "c": 1, "d" : 1, "e" : 1, "f" : 1, "g" : 1, "h": 1, "i" : 1, "j" : 1, "k" :"xxxx", "l" : 1, "m":1, "n": true, "o" : 1}`, &a))
+	should.Equal(myfloat32(1), a.I)
+	should.Equal(myfloat64(1), a.J)
+	should.Equal(myint8(1), a.A)
+	should.Equal(myint16(1), a.B)
+	should.Equal(myint32(1), a.C)
+	should.Equal(myint64(1), a.D)
+	should.Equal(myuint8(1), a.E)
+	should.Equal(myuint16(1), a.F)
+	should.Equal(myuint32(1), a.G)
+	should.Equal(myuint64(1), a.H)
+	should.Equal(mystring("xxxx"), a.K)
+	should.Equal(mybool(true), a.N)
+	should.Equal(myuintptr(1), a.O)
+	b, err := Marshal(a)
+	should.Nil(err)
+	should.Equal(`{"a":1,"stream":1,"c":1,"d":1,"e":1,"f":1,"g":1,"h":1,"i":1,"j":1,"k":"xxxx","l":1,"m":1,"n":true,"o":1}`, string(b))
+
+}

jsoniter_any_array_test.go

@@ -0,0 +1,122 @@
+package jsoniter
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_read_empty_array_as_any(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("[]"))
+	should.Equal(ArrayValue, any.Get().ValueType())
+	should.Equal(InvalidValue, any.Get(0.3).ValueType())
+	should.Equal(0, any.Size())
+	should.Equal(ArrayValue, any.ValueType())
+	should.Nil(any.LastError())
+	should.Equal(0, any.ToInt())
+	should.Equal(int32(0), any.ToInt32())
+	should.Equal(int64(0), any.ToInt64())
+	should.Equal(uint(0), any.ToUint())
+	should.Equal(uint32(0), any.ToUint32())
+	should.Equal(uint64(0), any.ToUint64())
+	should.Equal(float32(0), any.ToFloat32())
+	should.Equal(float64(0), any.ToFloat64())
+}
+
+func Test_read_one_element_array_as_any(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("[1]"))
+	should.Equal(1, any.Size())
+}
+
+func Test_read_two_element_array_as_any(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("[1,2]"))
+	should.Equal(1, any.Get(0).ToInt())
+	should.Equal(2, any.Size())
+	should.True(any.ToBool())
+	should.Equal(1, any.ToInt())
+	should.Equal([]interface{}{float64(1), float64(2)}, any.GetInterface())
+	stream := NewStream(ConfigDefault, nil, 32)
+	any.WriteTo(stream)
+	should.Equal("[1,2]", string(stream.Buffer()))
+	arr := []int{}
+	any.ToVal(&arr)
+	should.Equal([]int{1, 2}, arr)
+}
+
+func Test_wrap_array_and_convert_to_any(t *testing.T) {
+	should := require.New(t)
+	any := Wrap([]int{1, 2, 3})
+	any2 := Wrap([]int{})
+
+	should.Equal("[1,2,3]", any.ToString())
+	should.True(any.ToBool())
+	should.False(any2.ToBool())
+
+	should.Equal(1, any.ToInt())
+	should.Equal(0, any2.ToInt())
+	should.Equal(int32(1), any.ToInt32())
+	should.Equal(int32(0), any2.ToInt32())
+	should.Equal(int64(1), any.ToInt64())
+	should.Equal(int64(0), any2.ToInt64())
+	should.Equal(uint(1), any.ToUint())
+	should.Equal(uint(0), any2.ToUint())
+	should.Equal(uint32(1), any.ToUint32())
+	should.Equal(uint32(0), any2.ToUint32())
+	should.Equal(uint64(1), any.ToUint64())
+	should.Equal(uint64(0), any2.ToUint64())
+	should.Equal(float32(1), any.ToFloat32())
+	should.Equal(float32(0), any2.ToFloat32())
+	should.Equal(float64(1), any.ToFloat64())
+	should.Equal(float64(0), any2.ToFloat64())
+	should.Equal(3, any.Size())
+	should.Equal(0, any2.Size())
+
+	var i interface{} = []int{1, 2, 3}
+	should.Equal(i, any.GetInterface())
+}
+
+func Test_array_lazy_any_get(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("[1,[2,3],4]"))
+	should.Equal(3, any.Get(1, 1).ToInt())
+	should.Equal("[1,[2,3],4]", any.ToString())
+}
+
+func Test_array_lazy_any_get_all(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("[[1],[2],[3,4]]"))
+	should.Equal("[1,2,3]", any.Get('*', 0).ToString())
+	any = Get([]byte("[[[1],[2],[3,4]]]"), 0, '*', 0)
+	should.Equal("[1,2,3]", any.ToString())
+}
+
+func Test_array_wrapper_any_get_all(t *testing.T) {
+	should := require.New(t)
+	any := wrapArray([][]int{
+		{1, 2},
+		{3, 4},
+		{5, 6},
+	})
+	should.Equal("[1,3,5]", any.Get('*', 0).ToString())
+	should.Equal(ArrayValue, any.ValueType())
+	should.True(any.ToBool())
+	should.Equal(1, any.Get(0, 0).ToInt())
+}
+
+func Test_array_lazy_any_get_invalid(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("[]"))
+	should.Equal(InvalidValue, any.Get(1, 1).ValueType())
+	should.NotNil(any.Get(1, 1).LastError())
+	should.Equal(InvalidValue, any.Get("1").ValueType())
+	should.NotNil(any.Get("1").LastError())
+}
+
+func Test_invalid_array(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("["), 0)
+	should.Equal(InvalidValue, any.ValueType())
+}

jsoniter_any_bool_test.go

@@ -0,0 +1,64 @@
+package jsoniter
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+var boolConvertMap = map[string]bool{
+	"null":  false,
+	"true":  true,
+	"false": false,
+
+	`"true"`:  true,
+	`"false"`: true,
+
+	"123":   true,
+	`"123"`: true,
+	"0":     false,
+	`"0"`:   false,
+	"-1":    true,
+	`"-1"`:  true,
+
+	"1.1":       true,
+	"0.0":       false,
+	"-1.1":      true,
+	`""`:        false,
+	"[1,2]":     true,
+	"[]":        false,
+	"{}":        true,
+	`{"abc":1}`: true,
+}
+
+func Test_read_bool_as_any(t *testing.T) {
+	should := require.New(t)
+
+	var any Any
+	for k, v := range boolConvertMap {
+		any = Get([]byte(k))
+		if v {
+			should.True(any.ToBool(), fmt.Sprintf("origin val is %v", k))
+		} else {
+			should.False(any.ToBool(), fmt.Sprintf("origin val is %v", k))
+		}
+	}
+
+}
+
+func Test_write_bool_to_stream(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("true"))
+	stream := NewStream(ConfigDefault, nil, 32)
+	any.WriteTo(stream)
+	should.Equal("true", string(stream.Buffer()))
+	should.Equal(any.ValueType(), BoolValue)
+
+	any = Get([]byte("false"))
+	stream = NewStream(ConfigDefault, nil, 32)
+	any.WriteTo(stream)
+	should.Equal("false", string(stream.Buffer()))
+
+	should.Equal(any.ValueType(), BoolValue)
+}

jsoniter_any_float_test.go

@@ -0,0 +1,102 @@
+package jsoniter
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+var floatConvertMap = map[string]float64{
+	"null":  0,
+	"true":  1,
+	"false": 0,
+
+	`"true"`:  0,
+	`"false"`: 0,
+
+	"1e1":  10,
+	"1e+1": 10,
+	"1e-1": .1,
+	"1E1":  10,
+	"1E+1": 10,
+	"1E-1": .1,
+
+	"-1e1":  -10,
+	"-1e+1": -10,
+	"-1e-1": -.1,
+	"-1E1":  -10,
+	"-1E+1": -10,
+	"-1E-1": -.1,
+
+	`"1e1"`:  10,
+	`"1e+1"`: 10,
+	`"1e-1"`: .1,
+	`"1E1"`:  10,
+	`"1E+1"`: 10,
+	`"1E-1"`: .1,
+
+	`"-1e1"`:  -10,
+	`"-1e+1"`: -10,
+	`"-1e-1"`: -.1,
+	`"-1E1"`:  -10,
+	`"-1E+1"`: -10,
+	`"-1E-1"`: -.1,
+
+	"123":       123,
+	`"123true"`: 123,
+	`"+"`:       0,
+	`"-"`:       0,
+
+	`"-123true"`:  -123,
+	`"-99.9true"`: -99.9,
+	"0":           0,
+	`"0"`:         0,
+	"-1":          -1,
+
+	"1.1":       1.1,
+	"0.0":       0,
+	"-1.1":      -1.1,
+	`"+1.1"`:    1.1,
+	`""`:        0,
+	"[1,2]":     1,
+	"[]":        0,
+	"{}":        0,
+	`{"abc":1}`: 0,
+}
+
+func Test_read_any_to_float(t *testing.T) {
+	should := require.New(t)
+	for k, v := range floatConvertMap {
+		any := Get([]byte(k))
+		should.Equal(float64(v), any.ToFloat64(), "the original val is "+k)
+	}
+
+	for k, v := range floatConvertMap {
+		any := Get([]byte(k))
+		should.Equal(float32(v), any.ToFloat32(), "the original val is "+k)
+	}
+}
+
+func Test_read_float_to_any(t *testing.T) {
+	should := require.New(t)
+	any := WrapFloat64(12.3)
+	anyFloat64 := float64(12.3)
+	//negaAnyFloat64 := float64(-1.1)
+	any2 := WrapFloat64(-1.1)
+	should.Equal(float64(12.3), any.ToFloat64())
+	//should.Equal("12.3", any.ToString())
+	should.True(any.ToBool())
+	should.Equal(float32(anyFloat64), any.ToFloat32())
+	should.Equal(int(anyFloat64), any.ToInt())
+	should.Equal(int32(anyFloat64), any.ToInt32())
+	should.Equal(int64(anyFloat64), any.ToInt64())
+	should.Equal(uint(anyFloat64), any.ToUint())
+	should.Equal(uint32(anyFloat64), any.ToUint32())
+	should.Equal(uint64(anyFloat64), any.ToUint64())
+	should.Equal(uint(0), any2.ToUint())
+	should.Equal(uint32(0), any2.ToUint32())
+	should.Equal(uint64(0), any2.ToUint64())
+	should.Equal(any.ValueType(), NumberValue)
+
+	should.Equal("1.23E+01", any.ToString())
+}

jsoniter_any_int_test.go

@@ -0,0 +1,197 @@
+package jsoniter
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+var intConvertMap = map[string]int{
+	"null":       0,
+	"321.1":      321,
+	"-321.1":     -321,
+	`"1.1"`:      1,
+	`"-321.1"`:   -321,
+	"0.0":        0,
+	"0":          0,
+	`"0"`:        0,
+	`"0.0"`:      0,
+	"-1.1":       -1,
+	"true":       1,
+	"false":      0,
+	`"true"`:     0,
+	`"false"`:    0,
+	`"true123"`:  0,
+	`"123true"`:  123,
+	`"-123true"`: -123,
+	`"1.2332e6"`: 1,
+	`""`:         0,
+	"+":          0,
+	"-":          0,
+	"[]":         0,
+	"[1,2]":      1,
+	`["1","2"]`:  1,
+	// object in php cannot convert to int
+	"{}": 0,
+}
+
+func Test_read_any_to_int(t *testing.T) {
+	should := require.New(t)
+
+	// int
+	for k, v := range intConvertMap {
+		any := Get([]byte(k))
+		should.Equal(v, any.ToInt(), fmt.Sprintf("origin val %v", k))
+	}
+
+	// int32
+	for k, v := range intConvertMap {
+		any := Get([]byte(k))
+		should.Equal(int32(v), any.ToInt32(), fmt.Sprintf("original val is %v", k))
+	}
+
+	// int64
+	for k, v := range intConvertMap {
+		any := Get([]byte(k))
+		should.Equal(int64(v), any.ToInt64(), fmt.Sprintf("original val is %v", k))
+	}
+
+}
+
+var uintConvertMap = map[string]int{
+	"null":       0,
+	"321.1":      321,
+	`"1.1"`:      1,
+	`"-123.1"`:   0,
+	"0.0":        0,
+	"0":          0,
+	`"0"`:        0,
+	`"0.0"`:      0,
+	`"00.0"`:     0,
+	"true":       1,
+	"false":      0,
+	`"true"`:     0,
+	`"false"`:    0,
+	`"true123"`:  0,
+	`"+1"`:       1,
+	`"123true"`:  123,
+	`"-123true"`: 0,
+	`"1.2332e6"`: 1,
+	`""`:         0,
+	"+":          0,
+	"-":          0,
+	".":          0,
+	"[]":         0,
+	"[1,2]":      1,
+	"{}":         0,
+	"{1,2}":      0,
+	"-1.1":       0,
+	"-321.1":     0,
+}
+
+func Test_read_any_to_uint(t *testing.T) {
+	should := require.New(t)
+
+	for k, v := range uintConvertMap {
+		any := Get([]byte(k))
+		should.Equal(uint64(v), any.ToUint64(), fmt.Sprintf("origin val %v", k))
+	}
+
+	for k, v := range uintConvertMap {
+		any := Get([]byte(k))
+		should.Equal(uint32(v), any.ToUint32(), fmt.Sprintf("origin val %v", k))
+	}
+
+	for k, v := range uintConvertMap {
+		any := Get([]byte(k))
+		should.Equal(uint(v), any.ToUint(), fmt.Sprintf("origin val %v", k))
+	}
+
+}
+
+func Test_read_int64_to_any(t *testing.T) {
+	should := require.New(t)
+	any := WrapInt64(12345)
+	should.Equal(12345, any.ToInt())
+	should.Equal(int32(12345), any.ToInt32())
+	should.Equal(int64(12345), any.ToInt64())
+	should.Equal(uint(12345), any.ToUint())
+	should.Equal(uint32(12345), any.ToUint32())
+	should.Equal(uint64(12345), any.ToUint64())
+	should.Equal(float32(12345), any.ToFloat32())
+	should.Equal(float64(12345), any.ToFloat64())
+	should.Equal("12345", any.ToString())
+	should.Equal(true, any.ToBool())
+	should.Equal(any.ValueType(), NumberValue)
+	stream := NewStream(ConfigDefault, nil, 32)
+	any.WriteTo(stream)
+	should.Equal("12345", string(stream.Buffer()))
+}
+func Test_read_int32_to_any(t *testing.T) {
+	should := require.New(t)
+	any := WrapInt32(12345)
+	should.Equal(12345, any.ToInt())
+	should.Equal(int32(12345), any.ToInt32())
+	should.Equal(int64(12345), any.ToInt64())
+	should.Equal(uint(12345), any.ToUint())
+	should.Equal(uint32(12345), any.ToUint32())
+	should.Equal(uint64(12345), any.ToUint64())
+	should.Equal(float32(12345), any.ToFloat32())
+	should.Equal(float64(12345), any.ToFloat64())
+	should.Equal("12345", any.ToString())
+	should.Equal(true, any.ToBool())
+	should.Equal(any.ValueType(), NumberValue)
+	stream := NewStream(ConfigDefault, nil, 32)
+	any.WriteTo(stream)
+	should.Equal("12345", string(stream.Buffer()))
+}
+
+func Test_read_uint32_to_any(t *testing.T) {
+	should := require.New(t)
+	any := WrapUint32(12345)
+	should.Equal(12345, any.ToInt())
+	should.Equal(int32(12345), any.ToInt32())
+	should.Equal(int64(12345), any.ToInt64())
+	should.Equal(uint(12345), any.ToUint())
+	should.Equal(uint32(12345), any.ToUint32())
+	should.Equal(uint64(12345), any.ToUint64())
+	should.Equal(float32(12345), any.ToFloat32())
+	should.Equal(float64(12345), any.ToFloat64())
+	should.Equal("12345", any.ToString())
+	should.Equal(true, any.ToBool())
+	should.Equal(any.ValueType(), NumberValue)
+	stream := NewStream(ConfigDefault, nil, 32)
+	any.WriteTo(stream)
+	should.Equal("12345", string(stream.Buffer()))
+}
+
+func Test_read_uint64_to_any(t *testing.T) {
+	should := require.New(t)
+	any := WrapUint64(12345)
+	should.Equal(12345, any.ToInt())
+	should.Equal(int32(12345), any.ToInt32())
+	should.Equal(int64(12345), any.ToInt64())
+	should.Equal(uint(12345), any.ToUint())
+	should.Equal(uint32(12345), any.ToUint32())
+	should.Equal(uint64(12345), any.ToUint64())
+	should.Equal(float32(12345), any.ToFloat32())
+	should.Equal(float64(12345), any.ToFloat64())
+	should.Equal("12345", any.ToString())
+	should.Equal(true, any.ToBool())
+	should.Equal(any.ValueType(), NumberValue)
+	stream := NewStream(ConfigDefault, nil, 32)
+	any.WriteTo(stream)
+	should.Equal("12345", string(stream.Buffer()))
+	stream = NewStream(ConfigDefault, nil, 32)
+	stream.WriteUint(uint(123))
+	should.Equal("123", string(stream.Buffer()))
+}
+
+func Test_int_lazy_any_get(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("1234"))
+	// panic!!
+	//should.Equal(any.LastError(), io.EOF)
+	should.Equal(InvalidValue, any.Get(1, "2").ValueType())
+}

jsoniter_any_map_test.go

@@ -0,0 +1,14 @@
+package jsoniter
+
+import (
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func Test_wrap_map(t *testing.T) {
+	should := require.New(t)
+	any := Wrap(map[string]string{"Field1": "hello"})
+	should.Equal("hello", any.Get("Field1").ToString())
+	any = Wrap(map[string]string{"Field1": "hello"})
+	should.Equal(1, any.Size())
+}

jsoniter_any_null_test.go

@@ -0,0 +1,15 @@
+package jsoniter
+
+import (
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func Test_read_null_as_any(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte(`null`))
+	should.Equal(0, any.ToInt())
+	should.Equal(float64(0), any.ToFloat64())
+	should.Equal("", any.ToString())
+	should.False(any.ToBool())
+}

jsoniter_any_object_test.go

@@ -0,0 +1,107 @@
+package jsoniter
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_read_object_as_any(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte(`{"a":"stream","c":"d"}`))
+	should.Equal(`{"a":"stream","c":"d"}`, any.ToString())
+	// partial parse
+	should.Equal("stream", any.Get("a").ToString())
+	should.Equal("d", any.Get("c").ToString())
+	should.Equal(2, len(any.Keys()))
+	any = Get([]byte(`{"a":"stream","c":"d"}`))
+	// full parse
+	should.Equal(2, len(any.Keys()))
+	should.Equal(2, any.Size())
+	should.True(any.ToBool())
+	should.Equal(0, any.ToInt())
+	should.Equal(ObjectValue, any.ValueType())
+	should.Nil(any.LastError())
+	obj := struct {
+		A string
+	}{}
+	any.ToVal(&obj)
+	should.Equal("stream", obj.A)
+}
+
+func Test_object_lazy_any_get(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte(`{"a":{"stream":{"c":"d"}}}`))
+	should.Equal("d", any.Get("a", "stream", "c").ToString())
+}
+
+func Test_object_lazy_any_get_all(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte(`{"a":[0],"stream":[1]}`))
+	should.Contains(any.Get('*', 0).ToString(), `"a":0`)
+}
+
+func Test_object_lazy_any_get_invalid(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte(`{}`))
+	should.Equal(InvalidValue, any.Get("a", "stream", "c").ValueType())
+	should.Equal(InvalidValue, any.Get(1).ValueType())
+}
+
+func Test_wrap_map_and_convert_to_any(t *testing.T) {
+	should := require.New(t)
+	any := Wrap(map[string]interface{}{"a": 1})
+	should.True(any.ToBool())
+	should.Equal(0, any.ToInt())
+	should.Equal(int32(0), any.ToInt32())
+	should.Equal(int64(0), any.ToInt64())
+	should.Equal(float32(0), any.ToFloat32())
+	should.Equal(float64(0), any.ToFloat64())
+	should.Equal(uint(0), any.ToUint())
+	should.Equal(uint32(0), any.ToUint32())
+	should.Equal(uint64(0), any.ToUint64())
+}
+
+func Test_wrap_object_and_convert_to_any(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+		field2 string
+	}
+	any := Wrap(TestObject{"hello", "world"})
+	should.Equal("hello", any.Get("Field1").ToString())
+	any = Wrap(TestObject{"hello", "world"})
+	should.Equal(2, any.Size())
+	should.Equal(`{"Field1":"hello"}`, any.Get('*').ToString())
+
+	should.Equal(0, any.ToInt())
+	should.Equal(int32(0), any.ToInt32())
+	should.Equal(int64(0), any.ToInt64())
+	should.Equal(float32(0), any.ToFloat32())
+	should.Equal(float64(0), any.ToFloat64())
+	should.Equal(uint(0), any.ToUint())
+	should.Equal(uint32(0), any.ToUint32())
+	should.Equal(uint64(0), any.ToUint64())
+	should.True(any.ToBool())
+	should.Equal(`{"Field1":"hello"}`, any.ToString())
+
+	// cannot pass!
+	//stream := NewStream(ConfigDefault, nil, 32)
+	//any.WriteTo(stream)
+	//should.Equal(`{"Field1":"hello"}`, string(stream.Buffer()))
+	// cannot pass!
+
+}
+
+func Test_any_within_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 Any
+		Field2 Any
+	}
+	obj := TestObject{}
+	err := UnmarshalFromString(`{"Field1": "hello", "Field2": [1,2,3]}`, &obj)
+	should.Nil(err)
+	should.Equal("hello", obj.Field1.ToString())
+	should.Equal("[1,2,3]", obj.Field2.ToString())
+}

jsoniter_any_string_test.go

@@ -0,0 +1,56 @@
+package jsoniter
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+var stringConvertMap = map[string]string{
+	"null":      "",
+	"321.1":     "321.1",
+	`"1.1"`:     "1.1",
+	`"-123.1"`:  "-123.1",
+	"0.0":       "0.0",
+	"0":         "0",
+	`"0"`:       "0",
+	`"0.0"`:     "0.0",
+	`"00.0"`:    "00.0",
+	"true":      "true",
+	"false":     "false",
+	`"true"`:    "true",
+	`"false"`:   "false",
+	`"true123"`: "true123",
+	`"+1"`:      "+1",
+	"[]":        "[]",
+	"[1,2]":     "[1,2]",
+	"{}":        "{}",
+	`{"a":1, "stream":true}`: `{"a":1, "stream":true}`,
+}
+
+func Test_read_any_to_string(t *testing.T) {
+	should := require.New(t)
+	for k, v := range stringConvertMap {
+		any := Get([]byte(k))
+		should.Equal(v, any.ToString(), "original val "+k)
+	}
+}
+
+func Test_read_string_as_any(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte(`"hello"`))
+	should.Equal("hello", any.ToString())
+	should.True(any.ToBool())
+	any = Get([]byte(`" "`))
+	should.False(any.ToBool())
+	any = Get([]byte(`"false"`))
+	should.True(any.ToBool())
+	any = Get([]byte(`"123"`))
+	should.Equal(123, any.ToInt())
+}
+
+func Test_wrap_string(t *testing.T) {
+	should := require.New(t)
+	any := WrapString("123")
+	should.Equal(123, any.ToInt())
+}

jsoniter_any_test.go

@@ -1,39 +0,0 @@
-package jsoniter
-
-import (
-	"testing"
-	"fmt"
-)
-
-func Test_read_string_as_any(t *testing.T) {
-	iter := ParseString(`[1, {"hello": "world"}, 2]`)
-	any := iter.ReadAny()
-	if any.ToString(1, "hello") != "world" {
-		t.FailNow()
-	}
-}
-
-func Test_read_float64_as_any(t *testing.T) {
-	iter := ParseString(`1.23`)
-	any := iter.ReadAny()
-	if any.ToFloat32() != 1.23 {
-		t.FailNow()
-	}
-}
-
-func Test_read_int_as_any(t *testing.T) {
-	iter := ParseString(`123`)
-	any := iter.ReadAny()
-	if any.ToFloat32() != 123 {
-		t.FailNow()
-	}
-}
-
-func Test_read_any_from_nested(t *testing.T) {
-	iter := ParseString(`{"numbers": ["1", "2", ["3", "4"]]}`)
-	val := iter.ReadAny()
-	if val.ToInt("numbers", 2, 0) != 3 {
-		fmt.Println(val.Error)
-		t.FailNow()
-	}
-}

jsoniter_array_test.go

@@ -1,65 +1,51 @@
 package jsoniter
 
 import (
-	"testing"
+	"bytes"
 	"encoding/json"
+	"github.com/stretchr/testify/require"
+	"testing"
 )
 
 func Test_empty_array(t *testing.T) {
-	iter := ParseString(`[]`)
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `[]`)
 	cont := iter.ReadArray()
-	if cont != false {
-		t.FailNow()
-	}
+	should.False(cont)
+	iter = ParseString(ConfigDefault, `[]`)
+	iter.ReadArrayCB(func(iter *Iterator) bool {
+		should.FailNow("should not call")
+		return true
+	})
 }
 
 func Test_one_element(t *testing.T) {
-	iter := ParseString(`[1]`)
-	cont := iter.ReadArray()
-	if cont != true {
-		t.FailNow()
-	}
-	if iter.ReadInt64() != 1 {
-		t.FailNow()
-	}
-	cont = iter.ReadArray()
-	if cont != false {
-		t.FailNow()
-	}
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `[1]`)
+	should.True(iter.ReadArray())
+	should.Equal(1, iter.ReadInt())
+	should.False(iter.ReadArray())
+	iter = ParseString(ConfigDefault, `[1]`)
+	iter.ReadArrayCB(func(iter *Iterator) bool {
+		should.Equal(1, iter.ReadInt())
+		return true
+	})
 }
 
 func Test_two_elements(t *testing.T) {
-	iter := ParseString(`[1,2]`)
-	cont := iter.ReadArray()
-	if cont != true {
-		t.FailNow()
-	}
-	if iter.ReadInt64() != 1 {
-		t.FailNow()
-	}
-	cont = iter.ReadArray()
-	if cont != true {
-		t.FailNow()
-	}
-	if iter.ReadInt64() != 2 {
-		t.FailNow()
-	}
-	cont = iter.ReadArray()
-	if cont != false {
-		t.FailNow()
-	}
-}
-
-func Test_invalid_array(t *testing.T) {
-	iter := ParseString(`[`)
-	iter.ReadArray()
-	if iter.Error == nil {
-		t.FailNow()
-	}
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `[1,2]`)
+	should.True(iter.ReadArray())
+	should.Equal(int64(1), iter.ReadInt64())
+	should.True(iter.ReadArray())
+	should.Equal(int64(2), iter.ReadInt64())
+	should.False(iter.ReadArray())
+	iter = ParseString(ConfigDefault, `[1,2]`)
+	should.Equal([]interface{}{float64(1), float64(2)}, iter.Read())
 }
 
 func Test_whitespace_in_head(t *testing.T) {
-	iter := ParseString(` [1]`)
+	iter := ParseString(ConfigDefault, ` [1]`)
 	cont := iter.ReadArray()
 	if cont != true {
 		t.FailNow()
@@ -70,7 +56,7 @@ func Test_whitespace_in_head(t *testing.T) {
 }
 
 func Test_whitespace_after_array_start(t *testing.T) {
-	iter := ParseString(`[ 1]`)
+	iter := ParseString(ConfigDefault, `[ 1]`)
 	cont := iter.ReadArray()
 	if cont != true {
 		t.FailNow()
@@ -81,7 +67,7 @@ func Test_whitespace_after_array_start(t *testing.T) {
 }
 
 func Test_whitespace_before_array_end(t *testing.T) {
-	iter := ParseString(`[1 ]`)
+	iter := ParseString(ConfigDefault, `[1 ]`)
 	cont := iter.ReadArray()
 	if cont != true {
 		t.FailNow()
@@ -96,7 +82,7 @@ func Test_whitespace_before_array_end(t *testing.T) {
 }
 
 func Test_whitespace_before_comma(t *testing.T) {
-	iter := ParseString(`[1 ,2]`)
+	iter := ParseString(ConfigDefault, `[1 ,2]`)
 	cont := iter.ReadArray()
 	if cont != true {
 		t.FailNow()
@@ -117,10 +103,99 @@ func Test_whitespace_before_comma(t *testing.T) {
 	}
 }
 
+func Test_write_array(t *testing.T) {
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(Config{IndentionStep: 2}.Froze(), buf, 4096)
+	stream.WriteArrayStart()
+	stream.WriteInt(1)
+	stream.WriteMore()
+	stream.WriteInt(2)
+	stream.WriteArrayEnd()
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("[\n  1,\n  2\n]", buf.String())
+}
+
+func Test_write_val_array(t *testing.T) {
+	should := require.New(t)
+	val := []int{1, 2, 3}
+	str, err := MarshalToString(&val)
+	should.Nil(err)
+	should.Equal("[1,2,3]", str)
+}
+
+func Test_write_val_empty_array(t *testing.T) {
+	should := require.New(t)
+	val := []int{}
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal("[]", str)
+}
+
+func Test_write_array_of_interface_in_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field  []interface{}
+		Field2 string
+	}
+	val := TestObject{[]interface{}{1, 2}, ""}
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Contains(str, `"Field":[1,2]`)
+	should.Contains(str, `"Field2":""`)
+}
+
+func Test_encode_byte_array(t *testing.T) {
+	should := require.New(t)
+	bytes, err := json.Marshal([]byte{1, 2, 3})
+	should.Nil(err)
+	should.Equal(`"AQID"`, string(bytes))
+	bytes, err = Marshal([]byte{1, 2, 3})
+	should.Nil(err)
+	should.Equal(`"AQID"`, string(bytes))
+}
+
+func Test_decode_byte_array_from_base64(t *testing.T) {
+	should := require.New(t)
+	data := []byte{}
+	err := json.Unmarshal([]byte(`"AQID"`), &data)
+	should.Nil(err)
+	should.Equal([]byte{1, 2, 3}, data)
+	err = Unmarshal([]byte(`"AQID"`), &data)
+	should.Nil(err)
+	should.Equal([]byte{1, 2, 3}, data)
+}
+
+func Test_decode_byte_array_from_array(t *testing.T) {
+	should := require.New(t)
+	data := []byte{}
+	err := json.Unmarshal([]byte(`[1,2,3]`), &data)
+	should.Nil(err)
+	should.Equal([]byte{1, 2, 3}, data)
+	err = Unmarshal([]byte(`[1,2,3]`), &data)
+	should.Nil(err)
+	should.Equal([]byte{1, 2, 3}, data)
+}
+
+func Test_decode_slice(t *testing.T) {
+	should := require.New(t)
+	slice := make([]string, 0, 5)
+	UnmarshalFromString(`["hello", "world"]`, &slice)
+	should.Equal([]string{"hello", "world"}, slice)
+}
+
+func Test_decode_large_slice(t *testing.T) {
+	should := require.New(t)
+	slice := make([]int, 0, 1)
+	UnmarshalFromString(`[1,2,3,4,5,6,7,8,9]`, &slice)
+	should.Equal([]int{1, 2, 3, 4, 5, 6, 7, 8, 9}, slice)
+}
+
 func Benchmark_jsoniter_array(b *testing.B) {
 	b.ReportAllocs()
 	input := []byte(`[1,2,3,4,5,6,7,8,9]`)
-	iter := ParseBytes(input)
+	iter := ParseBytes(ConfigDefault, input)
 	b.ResetTimer()
 	for n := 0; n < b.N; n++ {
 		iter.ResetBytes(input)
@@ -135,4 +210,4 @@ func Benchmark_json_array(b *testing.B) {
 		result := []interface{}{}
 		json.Unmarshal([]byte(`[1,2,3]`), &result)
 	}
-}
+}

jsoniter_bool_test.go

@@ -1,17 +1,84 @@
 package jsoniter
 
-import "testing"
+import (
+	"bytes"
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
 
 func Test_true(t *testing.T) {
-	iter := ParseString(`true`)
-	if iter.ReadBool() != true {
-		t.FailNow()
-	}
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `true`)
+	should.True(iter.ReadBool())
+	iter = ParseString(ConfigDefault, `true`)
+	should.Equal(true, iter.Read())
 }
 
 func Test_false(t *testing.T) {
-	iter := ParseString(`false`)
-	if iter.ReadBool() != false {
-		t.FailNow()
-	}
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `false`)
+	should.False(iter.ReadBool())
+}
+
+func Test_write_true_false(t *testing.T) {
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 4096)
+	stream.WriteTrue()
+	stream.WriteFalse()
+	stream.WriteBool(false)
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("truefalsefalse", buf.String())
+}
+
+func Test_write_val_bool(t *testing.T) {
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 4096)
+	stream.WriteVal(true)
+	should.Equal(stream.Buffered(), 4)
+	stream.Flush()
+	should.Equal(stream.Buffered(), 0)
+	should.Nil(stream.Error)
+	should.Equal("true", buf.String())
+}
+
+func Test_encode_string_bool(t *testing.T) {
+	type TestObject struct {
+		Field bool `json:",omitempty,string"`
+	}
+	should := require.New(t)
+	output, err := json.Marshal(TestObject{true})
+	should.Nil(err)
+	should.Equal(`{"Field":"true"}`, string(output))
+	output, err = Marshal(TestObject{true})
+	should.Nil(err)
+	should.Equal(`{"Field":"true"}`, string(output))
+}
+
+func Test_decode_string_bool(t *testing.T) {
+	type TestObject struct {
+		Field bool `json:",omitempty,string"`
+	}
+	should := require.New(t)
+	obj := TestObject{}
+	err := json.Unmarshal([]byte(`{"Field":"true"}`), &obj)
+	should.Nil(err)
+	should.True(obj.Field)
+
+	obj = TestObject{}
+	err = json.Unmarshal([]byte(`{"Field":true}`), &obj)
+	should.NotNil(err)
+
+	obj = TestObject{}
+	err = Unmarshal([]byte(`{"Field":"true"}`), &obj)
+	should.Nil(err)
+	should.True(obj.Field)
+
+	obj = TestObject{}
+	err = Unmarshal([]byte(`{"Field":true}`), &obj)
+	should.NotNil(err)
 }

jsoniter_customize_test.go

@@ -1,15 +1,16 @@
 package jsoniter
 
 import (
+	"encoding/json"
+	"github.com/stretchr/testify/require"
+	"strconv"
 	"testing"
 	"time"
 	"unsafe"
-	"strconv"
-	"reflect"
 )
 
 func Test_customize_type_decoder(t *testing.T) {
-	RegisterTypeDecoder("time.Time", func(ptr unsafe.Pointer, iter *Iterator) {
+	RegisterTypeDecoderFunc("time.Time", func(ptr unsafe.Pointer, iter *Iterator) {
 		t, err := time.ParseInLocation("2006-01-02 15:04:05", iter.ReadString(), time.UTC)
 		if err != nil {
 			iter.Error = err
@@ -17,7 +18,7 @@ func Test_customize_type_decoder(t *testing.T) {
 		}
 		*((*time.Time)(ptr)) = t
 	})
-	defer ClearDecoders()
+	defer ConfigDefault.(*frozenConfig).cleanDecoders()
 	val := time.Time{}
 	err := Unmarshal([]byte(`"2016-12-05 08:43:28"`), &val)
 	if err != nil {
@@ -29,15 +30,50 @@ func Test_customize_type_decoder(t *testing.T) {
 	}
 }
 
+func Test_customize_type_encoder(t *testing.T) {
+	should := require.New(t)
+	RegisterTypeEncoderFunc("time.Time", func(ptr unsafe.Pointer, stream *Stream) {
+		t := *((*time.Time)(ptr))
+		stream.WriteString(t.UTC().Format("2006-01-02 15:04:05"))
+	}, nil)
+	defer ConfigDefault.(*frozenConfig).cleanEncoders()
+	val := time.Unix(0, 0)
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`"1970-01-01 00:00:00"`, str)
+}
+
+func Test_customize_byte_array_encoder(t *testing.T) {
+	ConfigDefault.(*frozenConfig).cleanEncoders()
+	should := require.New(t)
+	RegisterTypeEncoderFunc("[]uint8", func(ptr unsafe.Pointer, stream *Stream) {
+		t := *((*[]byte)(ptr))
+		stream.WriteString(string(t))
+	}, nil)
+	defer ConfigDefault.(*frozenConfig).cleanEncoders()
+	val := []byte("abc")
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`"abc"`, str)
+}
+
+func Test_customize_float_marshal(t *testing.T) {
+	should := require.New(t)
+	json := Config{MarshalFloatWith6Digits: true}.Froze()
+	str, err := json.MarshalToString(float32(1.23456789))
+	should.Nil(err)
+	should.Equal("1.234568", str)
+}
+
 type Tom struct {
 	field1 string
 }
 
 func Test_customize_field_decoder(t *testing.T) {
-	RegisterFieldDecoder("jsoniter.Tom", "field1", func(ptr unsafe.Pointer, iter *Iterator) {
+	RegisterFieldDecoderFunc("jsoniter.Tom", "field1", func(ptr unsafe.Pointer, iter *Iterator) {
 		*((*string)(ptr)) = strconv.Itoa(iter.ReadInt())
 	})
-	defer ClearDecoders()
+	defer ConfigDefault.(*frozenConfig).cleanDecoders()
 	tom := Tom{}
 	err := Unmarshal([]byte(`{"field1": 100}`), &tom)
 	if err != nil {
@@ -45,21 +81,236 @@ func Test_customize_field_decoder(t *testing.T) {
 	}
 }
 
-func Test_customize_field_decoder_factory(t *testing.T) {
-	RegisterFieldCustomizer(func(type_ reflect.Type, field *reflect.StructField) ([]string, DecoderFunc) {
-		if (type_.String() == "jsoniter.Tom" && field.Name == "field1") {
-			return []string{"field-1"}, func(ptr unsafe.Pointer, iter *Iterator) {
-				*((*string)(ptr)) = strconv.Itoa(iter.ReadInt())
-			}
-		}
-		return nil, nil
+type TestObject1 struct {
+	field1 string
+}
+
+type testExtension struct {
+	DummyExtension
+}
+
+func (extension *testExtension) UpdateStructDescriptor(structDescriptor *StructDescriptor) {
+	if structDescriptor.Type.String() != "jsoniter.TestObject1" {
+		return
+	}
+	binding := structDescriptor.GetField("field1")
+	binding.Encoder = &funcEncoder{fun: func(ptr unsafe.Pointer, stream *Stream) {
+		str := *((*string)(ptr))
+		val, _ := strconv.Atoi(str)
+		stream.WriteInt(val)
+	}}
+	binding.Decoder = &funcDecoder{func(ptr unsafe.Pointer, iter *Iterator) {
+		*((*string)(ptr)) = strconv.Itoa(iter.ReadInt())
+	}}
+	binding.ToNames = []string{"field-1"}
+	binding.FromNames = []string{"field-1"}
+}
+
+func Test_customize_field_by_extension(t *testing.T) {
+	should := require.New(t)
+	RegisterExtension(&testExtension{})
+	obj := TestObject1{}
+	err := UnmarshalFromString(`{"field-1": 100}`, &obj)
+	should.Nil(err)
+	should.Equal("100", obj.field1)
+	str, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{"field-1":100}`, str)
+}
+
+type timeImplementedMarshaler time.Time
+
+func (obj timeImplementedMarshaler) MarshalJSON() ([]byte, error) {
+	seconds := time.Time(obj).Unix()
+	return []byte(strconv.FormatInt(seconds, 10)), nil
+}
+
+func Test_marshaler(t *testing.T) {
+	type TestObject struct {
+		Field timeImplementedMarshaler
+	}
+	should := require.New(t)
+	val := timeImplementedMarshaler(time.Unix(123, 0))
+	obj := TestObject{val}
+	bytes, err := json.Marshal(obj)
+	should.Nil(err)
+	should.Equal(`{"Field":123}`, string(bytes))
+	str, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{"Field":123}`, str)
+}
+
+func Test_marshaler_and_encoder(t *testing.T) {
+	type TestObject struct {
+		Field *timeImplementedMarshaler
+	}
+	ConfigDefault.(*frozenConfig).cleanEncoders()
+	should := require.New(t)
+	RegisterTypeEncoderFunc("jsoniter.timeImplementedMarshaler", func(ptr unsafe.Pointer, stream *Stream) {
+		stream.WriteString("hello from encoder")
+	}, nil)
+	val := timeImplementedMarshaler(time.Unix(123, 0))
+	obj := TestObject{&val}
+	bytes, err := json.Marshal(obj)
+	should.Nil(err)
+	should.Equal(`{"Field":123}`, string(bytes))
+	str, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{"Field":"hello from encoder"}`, str)
+}
+
+type ObjectImplementedUnmarshaler int
+
+func (obj *ObjectImplementedUnmarshaler) UnmarshalJSON(s []byte) error {
+	val, _ := strconv.ParseInt(string(s[1:len(s)-1]), 10, 64)
+	*obj = ObjectImplementedUnmarshaler(val)
+	return nil
+}
+
+func Test_unmarshaler(t *testing.T) {
+	should := require.New(t)
+	var obj ObjectImplementedUnmarshaler
+	err := json.Unmarshal([]byte(`   "100" `), &obj)
+	should.Nil(err)
+	should.Equal(100, int(obj))
+	iter := ParseString(ConfigDefault, `   "100" `)
+	iter.ReadVal(&obj)
+	should.Nil(err)
+	should.Equal(100, int(obj))
+}
+
+func Test_unmarshaler_and_decoder(t *testing.T) {
+	type TestObject struct {
+		Field  *ObjectImplementedUnmarshaler
+		Field2 string
+	}
+	ConfigDefault.(*frozenConfig).cleanDecoders()
+	should := require.New(t)
+	RegisterTypeDecoderFunc("jsoniter.ObjectImplementedUnmarshaler", func(ptr unsafe.Pointer, iter *Iterator) {
+		*(*ObjectImplementedUnmarshaler)(ptr) = 10
+		iter.Skip()
 	})
-	tom := Tom{}
-	err := Unmarshal([]byte(`{"field-1": 100}`), &tom)
-	if err != nil {
-		t.Fatal(err)
+	obj := TestObject{}
+	val := ObjectImplementedUnmarshaler(0)
+	obj.Field = &val
+	err := json.Unmarshal([]byte(`{"Field":"100"}`), &obj)
+	should.Nil(err)
+	should.Equal(100, int(*obj.Field))
+	err = Unmarshal([]byte(`{"Field":"100"}`), &obj)
+	should.Nil(err)
+	should.Equal(10, int(*obj.Field))
+}
+
+type tmString string
+type tmStruct struct {
+	String tmString
+}
+
+func (s tmStruct) MarshalJSON() ([]byte, error) {
+	var b []byte
+	b = append(b, '"')
+	b = append(b, s.String...)
+	b = append(b, '"')
+	return b, nil
+}
+
+func Test_marshaler_on_struct(t *testing.T) {
+	fixed := tmStruct{"hello"}
+	//json.Marshal(fixed)
+	Marshal(fixed)
+}
+
+type withChan struct {
+	F2 chan []byte
+}
+
+func (q withChan) MarshalJSON() ([]byte, error) {
+	return []byte(`""`), nil
+}
+
+func (q *withChan) UnmarshalJSON(value []byte) error {
+	return nil
+}
+
+func Test_marshal_json_with_chan(t *testing.T) {
+	type TestObject struct {
+		F1 withChan
 	}
-	if tom.field1 != "100" {
-		t.Fatal(tom.field1)
+	should := require.New(t)
+	output, err := MarshalToString(TestObject{})
+	should.Nil(err)
+	should.Equal(`{"F1":""}`, output)
+}
+
+type withTime struct {
+	time.Time
+}
+
+func (t *withTime) UnmarshalJSON(b []byte) error {
+	return nil
+}
+func (t withTime) MarshalJSON() ([]byte, error) {
+	return []byte(`"fake"`), nil
+}
+
+func Test_marshal_json_with_time(t *testing.T) {
+	type S1 struct {
+		F1 withTime
+		F2 *withTime
 	}
-}
+	type TestObject struct {
+		TF1 S1
+	}
+	should := require.New(t)
+	obj := TestObject{
+		S1{
+			F1: withTime{
+				time.Unix(0, 0),
+			},
+			F2: &withTime{
+				time.Unix(0, 0),
+			},
+		},
+	}
+	output, err := json.Marshal(obj)
+	should.Nil(err)
+	should.Equal(`{"TF1":{"F1":"fake","F2":"fake"}}`, string(output))
+	output, err = Marshal(obj)
+	should.Nil(err)
+	should.Equal(`{"TF1":{"F1":"fake","F2":"fake"}}`, string(output))
+	obj = TestObject{}
+	should.Nil(json.Unmarshal([]byte(`{"TF1":{"F1":"fake","F2":"fake"}}`), &obj))
+	should.NotNil(obj.TF1.F2)
+	obj = TestObject{}
+	should.Nil(Unmarshal([]byte(`{"TF1":{"F1":"fake","F2":"fake"}}`), &obj))
+	should.NotNil(obj.TF1.F2)
+}
+
+func Test_customize_tag_key(t *testing.T) {
+
+	type TestObject struct {
+		Field string `orm:"field"`
+	}
+
+	should := require.New(t)
+	json := Config{TagKey: "orm"}.Froze()
+	str, err := json.MarshalToString(TestObject{"hello"})
+	should.Nil(err)
+	should.Equal(`{"field":"hello"}`, str)
+}
+
+func Test_recursive_empty_interface_customization(t *testing.T) {
+	t.Skip()
+	var obj interface{}
+	RegisterTypeDecoderFunc("interface {}", func(ptr unsafe.Pointer, iter *Iterator) {
+		switch iter.WhatIsNext() {
+		case NumberValue:
+			*(*interface{})(ptr) = iter.ReadInt64()
+		default:
+			*(*interface{})(ptr) = iter.Read()
+		}
+	})
+	should := require.New(t)
+	Unmarshal([]byte("[100]"), &obj)
+	should.Equal([]interface{}{int64(100)}, obj)
+}

jsoniter_demo_test.go

@@ -1,56 +1,87 @@
 package jsoniter
 
 import (
+	"encoding/json"
 	"testing"
-	"fmt"
+
+	"github.com/stretchr/testify/require"
 )
 
 func Test_bind_api_demo(t *testing.T) {
-	iter := ParseString(`[0,1,2,3]`)
+	should := require.New(t)
 	val := []int{}
-	iter.Read(&val)
-	fmt.Println(val[3])
-}
-
-func Test_any_api_demo(t *testing.T) {
-	iter := ParseString(`[0,1,2,3]`)
-	val := iter.ReadAny()
-	fmt.Println(val.Get(3))
+	err := UnmarshalFromString(`[0,1,2,3]  `, &val)
+	should.Nil(err)
+	should.Equal([]int{0, 1, 2, 3}, val)
 }
 
 func Test_iterator_api_demo(t *testing.T) {
-	iter := ParseString(`[0,1,2,3]`)
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `[0,1,2,3]`)
 	total := 0
 	for iter.ReadArray() {
 		total += iter.ReadInt()
 	}
-	fmt.Println(total)
+	should.Equal(6, total)
 }
 
-type ABC struct {
-	a Any
+type People struct {
+	Name    string
+	Gender  string
+	Age     int
+	Address string
+	Mobile  string
+	Country string
+	Height  int
 }
 
-func Test_deep_nested_any_api(t *testing.T) {
-	iter := ParseString(`{"a": {"b": {"c": "d"}}}`)
-	abc := &ABC{}
-	iter.Read(&abc)
-	fmt.Println(abc.a.Get("b", "c"))
+func jsoniterMarshal(p *People) error {
+	_, err := Marshal(p)
+	if nil != err {
+		return err
+	}
+	return nil
+}
+func stdMarshal(p *People) error {
+	_, err := json.Marshal(p)
+	if nil != err {
+		return err
+	}
+	return nil
 }
 
-type User struct {
-	userId int
-	name string
-	tags []string
+func BenchmarkJosniterMarshal(b *testing.B) {
+	var p People
+	p.Address = "上海市徐汇区漕宝路"
+	p.Age = 30
+	p.Country = "中国"
+	p.Gender = "male"
+	p.Height = 170
+	p.Mobile = "18502120533"
+	p.Name = "Elvin"
+	b.ReportAllocs()
+	for i := 0; i < b.N; i++ {
+		err := jsoniterMarshal(&p)
+		if nil != err {
+			b.Error(err)
+		}
+	}
 }
 
-func Test_iterator_and_bind_api(t *testing.T) {
-	iter := ParseString(`[123, {"name": "taowen", "tags": ["crazy", "hacker"]}]`)
-	user := User{}
-	iter.ReadArray()
-	user.userId = iter.ReadInt()
-	iter.ReadArray()
-	iter.Read(&user)
-	iter.ReadArray() // array end
-	fmt.Println(user)
+func BenchmarkStdMarshal(b *testing.B) {
+	var p People
+	p.Address = "上海市徐汇区漕宝路"
+	p.Age = 30
+	p.Country = "中国"
+	p.Gender = "male"
+	p.Height = 170
+	p.Mobile = "18502120533"
+	p.Name = "Elvin"
+	b.ReportAllocs()
+	for i := 0; i < b.N; i++ {
+		err := stdMarshal(&p)
+		if nil != err {
+			b.Error(err)
+		}
+	}
 }

jsoniter_encode_interface_test.go

@@ -0,0 +1,42 @@
+package jsoniter
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_encode_interface(t *testing.T) {
+	should := require.New(t)
+	var a interface{}
+	a = int8(10)
+	str, err := MarshalToString(a)
+	should.Nil(err)
+	should.Equal(str, "10")
+	a = float32(3)
+	str, err = MarshalToString(a)
+	should.Nil(err)
+	should.Equal(str, "3")
+	a = map[string]interface{}{"abc": 1}
+	str, err = MarshalToString(a)
+	should.Nil(err)
+	should.Equal(str, `{"abc":1}`)
+	a = uintptr(1)
+	str, err = MarshalToString(a)
+	should.Nil(err)
+	should.Equal(str, "1")
+	a = uint(1)
+	str, err = MarshalToString(a)
+	should.Nil(err)
+	should.Equal(str, "1")
+	a = uint8(1)
+	str, err = MarshalToString(a)
+	should.Nil(err)
+	should.Equal(str, "1")
+	a = json.RawMessage("abc")
+	MarshalToString(a)
+	str, err = MarshalToString(a)
+	should.Nil(err)
+	should.Equal(str, "abc")
+}

jsoniter_fixed_array_test.go

@@ -0,0 +1,37 @@
+package jsoniter
+
+import (
+	"encoding/json"
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func Test_encode_fixed_array(t *testing.T) {
+	should := require.New(t)
+	type FixedArray [2]float64
+	fixed := FixedArray{0.1, 1.0}
+	output, err := MarshalToString(fixed)
+	should.Nil(err)
+	should.Equal("[0.1,1]", output)
+}
+
+func Test_encode_fixed_array_of_map(t *testing.T) {
+	should := require.New(t)
+	type FixedArray [2]map[string]string
+	fixed := FixedArray{map[string]string{"1": "2"}, map[string]string{"3": "4"}}
+	output, err := MarshalToString(fixed)
+	should.Nil(err)
+	should.Equal(`[{"1":"2"},{"3":"4"}]`, output)
+}
+
+func Test_decode_fixed_array(t *testing.T) {
+	should := require.New(t)
+	type FixedArray [2]float64
+	var fixed FixedArray
+	should.Nil(json.Unmarshal([]byte("[1,2,3]"), &fixed))
+	should.Equal(float64(1), fixed[0])
+	should.Equal(float64(2), fixed[1])
+	should.Nil(Unmarshal([]byte("[1,2,3]"), &fixed))
+	should.Equal(float64(1), fixed[0])
+	should.Equal(float64(2), fixed[1])
+}

jsoniter_float_test.go

@@ -1,40 +1,203 @@
+// +build go1.8
+
 package jsoniter
 
 import (
-	"testing"
+	"bytes"
 	"encoding/json"
 	"fmt"
+	"strconv"
+	"testing"
+
+	"github.com/stretchr/testify/require"
 )
 
-func Test_float64_0(t *testing.T) {
-	iter := ParseString(`0`)
-	val := iter.ReadFloat64()
-	if val != 0 {
-		t.Fatal(val)
+func Test_read_big_float(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `12.3`)
+	val := iter.ReadBigFloat()
+	val64, _ := val.Float64()
+	should.Equal(12.3, val64)
+}
+
+func Test_read_big_int(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `92233720368547758079223372036854775807`)
+	val := iter.ReadBigInt()
+	should.NotNil(val)
+	should.Equal(`92233720368547758079223372036854775807`, val.String())
+}
+
+func Test_read_float(t *testing.T) {
+	inputs := []string{
+		`1.1`, `1000`, `9223372036854775807`, `12.3`, `-12.3`, `720368.54775807`, `720368.547758075`,
+		`1e1`, `1e+1`, `1e-1`, `1E1`, `1E+1`, `1E-1`, `-1e1`, `-1e+1`, `-1e-1`,
+	}
+	for _, input := range inputs {
+		// non-streaming
+		t.Run(fmt.Sprintf("%v", input), func(t *testing.T) {
+			should := require.New(t)
+			iter := ParseString(ConfigDefault, input+",")
+			expected, err := strconv.ParseFloat(input, 32)
+			should.Nil(err)
+			should.Equal(float32(expected), iter.ReadFloat32())
+		})
+		t.Run(fmt.Sprintf("%v", input), func(t *testing.T) {
+			should := require.New(t)
+			iter := ParseString(ConfigDefault, input+",")
+			expected, err := strconv.ParseFloat(input, 64)
+			should.Nil(err)
+			should.Equal(expected, iter.ReadFloat64())
+		})
+		// streaming
+		t.Run(fmt.Sprintf("%v", input), func(t *testing.T) {
+			should := require.New(t)
+			iter := Parse(ConfigDefault, bytes.NewBufferString(input+","), 2)
+			expected, err := strconv.ParseFloat(input, 32)
+			should.Nil(err)
+			should.Equal(float32(expected), iter.ReadFloat32())
+		})
+		t.Run(fmt.Sprintf("%v", input), func(t *testing.T) {
+			should := require.New(t)
+			iter := Parse(ConfigDefault, bytes.NewBufferString(input+","), 2)
+			val := float64(0)
+			err := json.Unmarshal([]byte(input), &val)
+			should.Nil(err)
+			should.Equal(val, iter.ReadFloat64())
+		})
 	}
 }
 
-func Test_float64_1_dot_1(t *testing.T) {
-	iter := ParseString(`1.1`)
-	val := iter.ReadFloat64()
-	if val != 1.1 {
-		t.Fatal(val)
-	}
+func Test_read_float_as_interface(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `12.3`)
+	should.Equal(float64(12.3), iter.Read())
 }
 
-func Test_float32_1_dot_1_comma(t *testing.T) {
-	iter := ParseString(`1.1,`)
-	val := iter.ReadFloat32()
-	if val != 1.1 {
-		fmt.Println(iter.Error)
-		t.Fatal(val)
+func Test_wrap_float(t *testing.T) {
+	should := require.New(t)
+	str, err := MarshalToString(WrapFloat64(12.3))
+	should.Nil(err)
+	should.Equal("12.3", str)
+}
+
+func Test_write_float32(t *testing.T) {
+	vals := []float32{0, 1, -1, 99, 0xff, 0xfff, 0xffff, 0xfffff, 0xffffff, 0x4ffffff, 0xfffffff,
+		-0x4ffffff, -0xfffffff, 1.2345, 1.23456, 1.234567, 1.001}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteFloat32Lossy(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			output, err := json.Marshal(val)
+			should.Nil(err)
+			should.Equal(string(output), buf.String())
+		})
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteVal(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			output, err := json.Marshal(val)
+			should.Nil(err)
+			should.Equal(string(output), buf.String())
+		})
 	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 10)
+	stream.WriteRaw("abcdefg")
+	stream.WriteFloat32Lossy(1.123456)
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("abcdefg1.123456", buf.String())
+
+	stream = NewStream(ConfigDefault, nil, 0)
+	stream.WriteFloat32(float32(0.0000001))
+	should.Equal("1e-07", string(stream.buf))
+}
+
+func Test_write_float64(t *testing.T) {
+	vals := []float64{0, 1, -1, 99, 0xff, 0xfff, 0xffff, 0xfffff, 0xffffff, 0x4ffffff, 0xfffffff,
+		-0x4ffffff, -0xfffffff, 1.2345, 1.23456, 1.234567, 1.001}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteFloat64Lossy(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatFloat(val, 'f', -1, 64), buf.String())
+		})
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteVal(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatFloat(val, 'f', -1, 64), buf.String())
+		})
+	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 10)
+	stream.WriteRaw("abcdefg")
+	stream.WriteFloat64Lossy(1.123456)
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("abcdefg1.123456", buf.String())
+
+	stream = NewStream(ConfigDefault, nil, 0)
+	stream.WriteFloat64(float64(0.0000001))
+	should.Equal("1e-07", string(stream.buf))
+}
+
+func Test_read_float64_cursor(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, "[1.23456789\n,2,3]")
+	should.True(iter.ReadArray())
+	should.Equal(1.23456789, iter.Read())
+	should.True(iter.ReadArray())
+	should.Equal(float64(2), iter.Read())
+}
+
+func Test_read_float_scientific(t *testing.T) {
+	should := require.New(t)
+	var obj interface{}
+	should.Nil(UnmarshalFromString(`1e1`, &obj))
+	should.Equal(float64(10), obj)
+	should.Nil(json.Unmarshal([]byte(`1e1`), &obj))
+	should.Equal(float64(10), obj)
+	should.Nil(UnmarshalFromString(`1.0e1`, &obj))
+	should.Equal(float64(10), obj)
+	should.Nil(json.Unmarshal([]byte(`1.0e1`), &obj))
+	should.Equal(float64(10), obj)
+}
+
+func Test_lossy_float_marshal(t *testing.T) {
+	should := require.New(t)
+	api := Config{MarshalFloatWith6Digits: true}.Froze()
+	output, err := api.MarshalToString(float64(0.1234567))
+	should.Nil(err)
+	should.Equal("0.123457", output)
+	output, err = api.MarshalToString(float32(0.1234567))
+	should.Nil(err)
+	should.Equal("0.123457", output)
 }
 
 func Benchmark_jsoniter_float(b *testing.B) {
 	b.ReportAllocs()
+	input := []byte(`1.1123,`)
+	iter := NewIterator(ConfigDefault)
 	for n := 0; n < b.N; n++ {
-		iter := ParseString(`1.1111111111`)
+		iter.ResetBytes(input)
 		iter.ReadFloat64()
 	}
 }
@@ -44,4 +207,4 @@ func Benchmark_json_float(b *testing.B) {
 		result := float64(0)
 		json.Unmarshal([]byte(`1.1`), &result)
 	}
-}
+}

jsoniter_int_test.go

@@ -1,76 +1,492 @@
+// +build go1.8
+
 package jsoniter
 
 import (
-	"testing"
 	"bytes"
 	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"strconv"
+	"testing"
+
+	"github.com/stretchr/testify/require"
 )
 
-func Test_uint64_0(t *testing.T) {
-	iter := Parse(bytes.NewBufferString("0"), 4096)
-	val := iter.ReadUint64()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
-	}
-	if val != 0 {
-		t.Fatal(val)
-	}
-}
-
-func Test_uint64_1(t *testing.T) {
-	iter := Parse(bytes.NewBufferString("1"), 4096)
-	val := iter.ReadUint64()
-	if val != 1 {
-		t.Fatal(val)
-	}
-}
-
-func Test_uint64_100(t *testing.T) {
-	iter := Parse(bytes.NewBufferString("100"), 4096)
-	val := iter.ReadUint64()
-	if val != 100 {
-		t.Fatal(val)
-	}
-}
-
-func Test_uint64_100_comma(t *testing.T) {
-	iter := Parse(bytes.NewBufferString("100,"), 4096)
-	val := iter.ReadUint64()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
-	}
-	if val != 100 {
-		t.Fatal(val)
-	}
-}
-
-func Test_uint64_invalid(t *testing.T) {
-	iter := Parse(bytes.NewBufferString(","), 4096)
+func Test_read_uint64_invalid(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, ",")
 	iter.ReadUint64()
-	if iter.Error == nil {
-		t.FailNow()
+	should.NotNil(iter.Error)
+}
+
+func Test_read_int8(t *testing.T) {
+	inputs := []string{`127`, `-128`}
+	for _, input := range inputs {
+		t.Run(fmt.Sprintf("%v", input), func(t *testing.T) {
+			should := require.New(t)
+			iter := ParseString(ConfigDefault, input)
+			expected, err := strconv.ParseInt(input, 10, 8)
+			should.Nil(err)
+			should.Equal(int8(expected), iter.ReadInt8())
+		})
 	}
 }
 
-func Test_int64_100(t *testing.T) {
-	iter := Parse(bytes.NewBufferString("100"), 4096)
-	val := iter.ReadInt64()
-	if val != 100 {
-		t.Fatal(val)
+func Test_read_int16(t *testing.T) {
+	inputs := []string{`32767`, `-32768`}
+	for _, input := range inputs {
+		t.Run(fmt.Sprintf("%v", input), func(t *testing.T) {
+			should := require.New(t)
+			iter := ParseString(ConfigDefault, input)
+			expected, err := strconv.ParseInt(input, 10, 16)
+			should.Nil(err)
+			should.Equal(int16(expected), iter.ReadInt16())
+		})
 	}
 }
 
-func Test_int64_minus_100(t *testing.T) {
-	iter := Parse(bytes.NewBufferString("-100"), 4096)
-	val := iter.ReadInt64()
-	if val != -100 {
-		t.Fatal(val)
+func Test_read_int32(t *testing.T) {
+	inputs := []string{`1`, `12`, `123`, `1234`, `12345`, `123456`, `2147483647`, `-2147483648`}
+	for _, input := range inputs {
+		t.Run(fmt.Sprintf("%v", input), func(t *testing.T) {
+			should := require.New(t)
+			iter := ParseString(ConfigDefault, input)
+			expected, err := strconv.ParseInt(input, 10, 32)
+			should.Nil(err)
+			should.Equal(int32(expected), iter.ReadInt32())
+		})
+		t.Run(fmt.Sprintf("%v", input), func(t *testing.T) {
+			should := require.New(t)
+			iter := Parse(ConfigDefault, bytes.NewBufferString(input), 2)
+			expected, err := strconv.ParseInt(input, 10, 32)
+			should.Nil(err)
+			should.Equal(int32(expected), iter.ReadInt32())
+		})
+	}
+}
+
+func Test_read_int32_array(t *testing.T) {
+	should := require.New(t)
+	input := `[123,456,789]`
+	val := make([]int32, 0)
+	UnmarshalFromString(input, &val)
+	should.Equal(3, len(val))
+}
+
+func Test_read_int64_array(t *testing.T) {
+	should := require.New(t)
+	input := `[123,456,789]`
+	val := make([]int64, 0)
+	UnmarshalFromString(input, &val)
+	should.Equal(3, len(val))
+}
+
+func Test_read_int_overflow(t *testing.T) {
+	should := require.New(t)
+	inputArr := []string{"123451", "-123451"}
+	for _, s := range inputArr {
+		iter := ParseString(ConfigDefault, s)
+		iter.ReadInt8()
+		should.NotNil(iter.Error)
+
+		iterU := ParseString(ConfigDefault, s)
+		iterU.ReadUint8()
+		should.NotNil(iterU.Error)
+
+	}
+
+	inputArr = []string{"12345678912", "-12345678912"}
+	for _, s := range inputArr {
+		iter := ParseString(ConfigDefault, s)
+		iter.ReadInt16()
+		should.NotNil(iter.Error)
+
+		iterUint := ParseString(ConfigDefault, s)
+		iterUint.ReadUint16()
+		should.NotNil(iterUint.Error)
+	}
+
+	inputArr = []string{"3111111111", "-3111111111", "1234232323232323235678912", "-1234567892323232323212"}
+	for _, s := range inputArr {
+		iter := ParseString(ConfigDefault, s)
+		iter.ReadInt32()
+		should.NotNil(iter.Error)
+
+		iterUint := ParseString(ConfigDefault, s)
+		iterUint.ReadUint32()
+		should.NotNil(iterUint.Error)
+	}
+
+	inputArr = []string{"9223372036854775811", "-9523372036854775807", "1234232323232323235678912", "-1234567892323232323212"}
+	for _, s := range inputArr {
+		iter := ParseString(ConfigDefault, s)
+		iter.ReadInt64()
+		should.NotNil(iter.Error)
+
+		iterUint := ParseString(ConfigDefault, s)
+		iterUint.ReadUint64()
+		should.NotNil(iterUint.Error)
+	}
+}
+
+func Test_read_int64(t *testing.T) {
+	inputs := []string{`1`, `12`, `123`, `1234`, `12345`, `123456`, `9223372036854775807`, `-9223372036854775808`}
+	for _, input := range inputs {
+		t.Run(fmt.Sprintf("%v", input), func(t *testing.T) {
+			should := require.New(t)
+			iter := ParseString(ConfigDefault, input)
+			expected, err := strconv.ParseInt(input, 10, 64)
+			should.Nil(err)
+			should.Equal(expected, iter.ReadInt64())
+		})
+		t.Run(fmt.Sprintf("%v", input), func(t *testing.T) {
+			should := require.New(t)
+			iter := Parse(ConfigDefault, bytes.NewBufferString(input), 2)
+			expected, err := strconv.ParseInt(input, 10, 64)
+			should.Nil(err)
+			should.Equal(expected, iter.ReadInt64())
+		})
+	}
+}
+
+func Test_read_int64_overflow(t *testing.T) {
+	should := require.New(t)
+	input := "123456789123456789123456789123456789,"
+	iter := ParseString(ConfigDefault, input)
+	iter.ReadInt64()
+	should.NotNil(iter.Error)
+}
+
+func Test_wrap_int(t *testing.T) {
+	should := require.New(t)
+	str, err := MarshalToString(WrapInt64(100))
+	should.Nil(err)
+	should.Equal("100", str)
+}
+
+func Test_write_uint8(t *testing.T) {
+	vals := []uint8{0, 1, 11, 111, 255}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteUint8(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatUint(uint64(val), 10), buf.String())
+		})
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteVal(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatUint(uint64(val), 10), buf.String())
+		})
+	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 3)
+	stream.WriteRaw("a")
+	stream.WriteUint8(100) // should clear buffer
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("a100", buf.String())
+}
+
+func Test_write_int8(t *testing.T) {
+	vals := []int8{0, 1, -1, 99, 0x7f, -0x80}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteInt8(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatInt(int64(val), 10), buf.String())
+		})
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteVal(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatInt(int64(val), 10), buf.String())
+		})
+	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 4)
+	stream.WriteRaw("a")
+	stream.WriteInt8(-100) // should clear buffer
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("a-100", buf.String())
+}
+
+func Test_write_uint16(t *testing.T) {
+	vals := []uint16{0, 1, 11, 111, 255, 0xfff, 0xffff}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteUint16(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatUint(uint64(val), 10), buf.String())
+		})
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteVal(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatUint(uint64(val), 10), buf.String())
+		})
+	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 5)
+	stream.WriteRaw("a")
+	stream.WriteUint16(10000) // should clear buffer
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("a10000", buf.String())
+}
+
+func Test_write_int16(t *testing.T) {
+	vals := []int16{0, 1, 11, 111, 255, 0xfff, 0x7fff, -0x8000}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteInt16(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatInt(int64(val), 10), buf.String())
+		})
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteVal(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatInt(int64(val), 10), buf.String())
+		})
+	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 6)
+	stream.WriteRaw("a")
+	stream.WriteInt16(-10000) // should clear buffer
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("a-10000", buf.String())
+}
+
+func Test_write_uint32(t *testing.T) {
+	vals := []uint32{0, 1, 11, 111, 255, 999999, 0xfff, 0xffff, 0xfffff, 0xffffff, 0xfffffff, 0xffffffff}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteUint32(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatUint(uint64(val), 10), buf.String())
+		})
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteVal(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatUint(uint64(val), 10), buf.String())
+		})
+	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 10)
+	stream.WriteRaw("a")
+	stream.WriteUint32(0xffffffff) // should clear buffer
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("a4294967295", buf.String())
+}
+
+func Test_write_int32(t *testing.T) {
+	vals := []int32{0, 1, 11, 111, 255, 999999, 0xfff, 0xffff, 0xfffff, 0xffffff, 0xfffffff, 0x7fffffff, -0x80000000}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteInt32(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatInt(int64(val), 10), buf.String())
+		})
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteVal(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatInt(int64(val), 10), buf.String())
+		})
+	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 11)
+	stream.WriteRaw("a")
+	stream.WriteInt32(-0x7fffffff) // should clear buffer
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("a-2147483647", buf.String())
+}
+
+func Test_write_uint64(t *testing.T) {
+	vals := []uint64{0, 1, 11, 111, 255, 999999, 0xfff, 0xffff, 0xfffff, 0xffffff, 0xfffffff, 0xffffffff,
+		0xfffffffff, 0xffffffffff, 0xfffffffffff, 0xffffffffffff, 0xfffffffffffff, 0xffffffffffffff,
+		0xfffffffffffffff, 0xffffffffffffffff}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteUint64(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatUint(uint64(val), 10), buf.String())
+		})
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteVal(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatUint(uint64(val), 10), buf.String())
+		})
+	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 10)
+	stream.WriteRaw("a")
+	stream.WriteUint64(0xffffffff) // should clear buffer
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("a4294967295", buf.String())
+}
+
+func Test_write_int64(t *testing.T) {
+	vals := []int64{0, 1, 11, 111, 255, 999999, 0xfff, 0xffff, 0xfffff, 0xffffff, 0xfffffff, 0xffffffff,
+		0xfffffffff, 0xffffffffff, 0xfffffffffff, 0xffffffffffff, 0xfffffffffffff, 0xffffffffffffff,
+		0xfffffffffffffff, 0x7fffffffffffffff, -0x8000000000000000}
+	for _, val := range vals {
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteInt64(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatInt(val, 10), buf.String())
+		})
+		t.Run(fmt.Sprintf("%v", val), func(t *testing.T) {
+			should := require.New(t)
+			buf := &bytes.Buffer{}
+			stream := NewStream(ConfigDefault, buf, 4096)
+			stream.WriteVal(val)
+			stream.Flush()
+			should.Nil(stream.Error)
+			should.Equal(strconv.FormatInt(val, 10), buf.String())
+		})
+	}
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 10)
+	stream.WriteRaw("a")
+	stream.WriteInt64(0xffffffff) // should clear buffer
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("a4294967295", buf.String())
+}
+
+func Test_write_val_int(t *testing.T) {
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 4096)
+	stream.WriteVal(1001)
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("1001", buf.String())
+}
+
+func Test_write_val_int_ptr(t *testing.T) {
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 4096)
+	val := 1001
+	stream.WriteVal(&val)
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("1001", buf.String())
+}
+
+func Test_json_number(t *testing.T) {
+	should := require.New(t)
+	var arr []json.Number
+	err := Unmarshal([]byte(`[1]`), &arr)
+	should.Nil(err)
+	should.Equal(json.Number("1"), arr[0])
+	str, err := MarshalToString(arr)
+	should.Nil(err)
+	should.Equal(`[1]`, str)
+}
+
+func Test_jsoniter_number(t *testing.T) {
+	should := require.New(t)
+	var arr []Number
+	err := Unmarshal([]byte(`[1]`), &arr)
+	should.Nil(err)
+	should.Equal(Number("1"), arr[0])
+	str, isNumber := CastJsonNumber(arr[0])
+	should.True(isNumber)
+	should.Equal("1", str)
+}
+
+func Benchmark_jsoniter_encode_int(b *testing.B) {
+	stream := NewStream(ConfigDefault, ioutil.Discard, 64)
+	for n := 0; n < b.N; n++ {
+		stream.n = 0
+		stream.WriteUint64(0xffffffff)
+	}
+}
+
+func Benchmark_itoa(b *testing.B) {
+	for n := 0; n < b.N; n++ {
+		strconv.FormatInt(0xffffffff, 10)
 	}
 }
 
 func Benchmark_jsoniter_int(b *testing.B) {
+	iter := NewIterator(ConfigDefault)
+	input := []byte(`100`)
 	for n := 0; n < b.N; n++ {
-		iter := ParseString(`-100`)
+		iter.ResetBytes(input)
 		iter.ReadInt64()
 	}
 }
@@ -80,4 +496,4 @@ func Benchmark_json_int(b *testing.B) {
 		result := int64(0)
 		json.Unmarshal([]byte(`-100`), &result)
 	}
-}
+}

jsoniter_interface_test.go

@@ -0,0 +1,299 @@
+package jsoniter
+
+import (
+	"encoding/json"
+	"github.com/stretchr/testify/require"
+	"testing"
+	"unsafe"
+)
+
+func Test_write_array_of_interface(t *testing.T) {
+	should := require.New(t)
+	array := []interface{}{"hello"}
+	str, err := MarshalToString(array)
+	should.Nil(err)
+	should.Equal(`["hello"]`, str)
+}
+
+func Test_write_map_of_interface(t *testing.T) {
+	should := require.New(t)
+	val := map[string]interface{}{"hello": "world"}
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`{"hello":"world"}`, str)
+}
+
+func Test_write_map_of_interface_in_struct(t *testing.T) {
+	type TestObject struct {
+		Field map[string]interface{}
+	}
+	should := require.New(t)
+	val := TestObject{map[string]interface{}{"hello": "world"}}
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`{"Field":{"hello":"world"}}`, str)
+}
+
+func Test_write_map_of_interface_in_struct_with_two_fields(t *testing.T) {
+	type TestObject struct {
+		Field  map[string]interface{}
+		Field2 string
+	}
+	should := require.New(t)
+	val := TestObject{map[string]interface{}{"hello": "world"}, ""}
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Contains(str, `"Field":{"hello":"world"}`)
+}
+
+type MyInterface interface {
+	Hello() string
+}
+
+type MyString string
+
+func (ms MyString) Hello() string {
+	return string(ms)
+}
+
+func Test_write_map_of_custom_interface(t *testing.T) {
+	should := require.New(t)
+	myStr := MyString("world")
+	should.Equal("world", myStr.Hello())
+	val := map[string]MyInterface{"hello": myStr}
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`{"hello":"world"}`, str)
+}
+
+func Test_write_interface(t *testing.T) {
+	should := require.New(t)
+	var val interface{}
+	val = "hello"
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`"hello"`, str)
+}
+
+func Test_read_interface(t *testing.T) {
+	should := require.New(t)
+	var val interface{}
+	err := UnmarshalFromString(`"hello"`, &val)
+	should.Nil(err)
+	should.Equal("hello", val)
+	err = UnmarshalFromString(`1e1`, &val)
+	should.Nil(err)
+	should.Equal(float64(10), val)
+	err = UnmarshalFromString(`1.0e1`, &val)
+	should.Nil(err)
+	should.Equal(float64(10), val)
+	err = json.Unmarshal([]byte(`1.0e1`), &val)
+	should.Nil(err)
+	should.Equal(float64(10), val)
+}
+
+func Test_read_custom_interface(t *testing.T) {
+	should := require.New(t)
+	var val MyInterface
+	RegisterTypeDecoderFunc("jsoniter.MyInterface", func(ptr unsafe.Pointer, iter *Iterator) {
+		*((*MyInterface)(ptr)) = MyString(iter.ReadString())
+	})
+	err := UnmarshalFromString(`"hello"`, &val)
+	should.Nil(err)
+	should.Equal("hello", val.Hello())
+}
+
+func Test_decode_object_contain_empty_interface(t *testing.T) {
+	type TestObject struct {
+		Field interface{}
+	}
+	should := require.New(t)
+	obj := TestObject{}
+	obj.Field = 1024
+	should.Nil(UnmarshalFromString(`{"Field": "hello"}`, &obj))
+	should.Equal("hello", obj.Field)
+}
+
+func Test_decode_object_contain_non_empty_interface(t *testing.T) {
+	type TestObject struct {
+		Field MyInterface
+	}
+	should := require.New(t)
+	obj := TestObject{}
+	obj.Field = MyString("abc")
+	should.Nil(UnmarshalFromString(`{"Field": "hello"}`, &obj))
+	should.Equal(MyString("hello"), obj.Field)
+}
+
+func Test_encode_object_contain_empty_interface(t *testing.T) {
+	type TestObject struct {
+		Field interface{}
+	}
+	should := require.New(t)
+	obj := TestObject{}
+	obj.Field = 1024
+	str, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{"Field":1024}`, str)
+}
+
+func Test_encode_object_contain_non_empty_interface(t *testing.T) {
+	type TestObject struct {
+		Field MyInterface
+	}
+	should := require.New(t)
+	obj := TestObject{}
+	obj.Field = MyString("hello")
+	str, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{"Field":"hello"}`, str)
+}
+
+func Test_nil_non_empty_interface(t *testing.T) {
+	ConfigDefault.(*frozenConfig).cleanEncoders()
+	ConfigDefault.(*frozenConfig).cleanDecoders()
+	type TestObject struct {
+		Field []MyInterface
+	}
+	should := require.New(t)
+	obj := TestObject{}
+	b := []byte(`{"Field":["AAA"]}`)
+	should.NotNil(json.Unmarshal(b, &obj))
+	should.NotNil(Unmarshal(b, &obj))
+}
+
+func Test_read_large_number_as_interface(t *testing.T) {
+	should := require.New(t)
+	var val interface{}
+	err := Config{UseNumber: true}.Froze().UnmarshalFromString(`123456789123456789123456789`, &val)
+	should.Nil(err)
+	output, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`123456789123456789123456789`, output)
+}
+
+func Test_nested_one_field_struct(t *testing.T) {
+	should := require.New(t)
+	type YetYetAnotherObject struct {
+		Field string
+	}
+	type YetAnotherObject struct {
+		Field *YetYetAnotherObject
+	}
+	type AnotherObject struct {
+		Field *YetAnotherObject
+	}
+	type TestObject struct {
+		Me *AnotherObject
+	}
+	obj := TestObject{&AnotherObject{&YetAnotherObject{&YetYetAnotherObject{"abc"}}}}
+	str, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{"Me":{"Field":{"Field":{"Field":"abc"}}}}`, str)
+	str, err = MarshalToString(&obj)
+	should.Nil(err)
+	should.Equal(`{"Me":{"Field":{"Field":{"Field":"abc"}}}}`, str)
+}
+
+func Test_struct_with_embedded_ptr_with_tag(t *testing.T) {
+	type O1 struct {
+		O1F string
+	}
+
+	type Option struct {
+		O1 *O1
+	}
+
+	type T struct {
+		Option `json:","`
+	}
+	var obj T
+	should := require.New(t)
+	output, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{"O1":null}`, output)
+}
+
+func Test_struct_with_one_nil(t *testing.T) {
+	type TestObject struct {
+		F *float64
+	}
+	var obj TestObject
+	should := require.New(t)
+	output, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{"F":null}`, output)
+}
+
+func Test_struct_with_one_nil_embedded(t *testing.T) {
+	type Parent struct {
+		Field1 string
+		Field2 string
+	}
+	type TestObject struct {
+		*Parent
+	}
+	obj := TestObject{}
+	should := require.New(t)
+	bytes, err := json.Marshal(obj)
+	should.Nil(err)
+	should.Equal("{}", string(bytes))
+	output, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{}`, output)
+}
+
+func Test_struct_with_not_nil_embedded(t *testing.T) {
+	type Parent struct {
+		Field0 string
+		Field1 []string
+		Field2 map[string]interface{}
+	}
+	type TestObject struct {
+		*Parent
+	}
+	should := require.New(t)
+	var obj TestObject
+	err := UnmarshalFromString(`{"Field0":"1","Field1":null,"Field2":{"K":"V"}}`, &obj)
+	should.Nil(err)
+	should.Nil(obj.Field1)
+	should.Equal(map[string]interface{}{"K": "V"}, obj.Field2)
+	should.Equal("1", obj.Field0)
+}
+
+func Test_array_with_one_nil_ptr(t *testing.T) {
+	obj := [1]*float64{nil}
+	should := require.New(t)
+	output, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`[null]`, output)
+}
+
+func Test_array_with_one_not_nil_ptr(t *testing.T) {
+	two := float64(2)
+	obj := [1]*float64{&two}
+	should := require.New(t)
+	output, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`[2]`, output)
+}
+
+func Test_embedded_array_with_one_nil(t *testing.T) {
+	type TestObject struct {
+		Field1 int
+		Field2 [1]*float64
+	}
+	var obj TestObject
+	should := require.New(t)
+	output, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Contains(output, `"Field2":[null]`)
+}
+
+func Test_array_with_nothing(t *testing.T) {
+	var obj [2]*float64
+	should := require.New(t)
+	output, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`[null,null]`, output)
+}

jsoniter_invalid_test.go

@@ -0,0 +1,132 @@
+package jsoniter
+
+import (
+	"encoding/json"
+	"github.com/stretchr/testify/require"
+	"io"
+	"testing"
+	"bytes"
+)
+
+func Test_missing_object_end(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Metric string                 `json:"metric"`
+		Tags   map[string]interface{} `json:"tags"`
+	}
+	obj := TestObject{}
+	should.NotNil(UnmarshalFromString(`{"metric": "sys.777","tags": {"a":"123"}`, &obj))
+}
+
+func Test_missing_array_end(t *testing.T) {
+	should := require.New(t)
+	should.NotNil(UnmarshalFromString(`[1,2,3`, &[]int{}))
+}
+
+func Test_invalid_any(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("[]"))
+	should.Equal(InvalidValue, any.Get(0.3).ValueType())
+	// is nil correct ?
+	should.Equal(nil, any.Get(0.3).GetInterface())
+
+	any = any.Get(0.3)
+	should.Equal(false, any.ToBool())
+	should.Equal(int(0), any.ToInt())
+	should.Equal(int32(0), any.ToInt32())
+	should.Equal(int64(0), any.ToInt64())
+	should.Equal(uint(0), any.ToUint())
+	should.Equal(uint32(0), any.ToUint32())
+	should.Equal(uint64(0), any.ToUint64())
+	should.Equal(float32(0), any.ToFloat32())
+	should.Equal(float64(0), any.ToFloat64())
+	should.Equal("", any.ToString())
+
+	should.Equal(InvalidValue, any.Get(0.1).Get(1).ValueType())
+}
+
+func Test_invalid_struct_input(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct{}
+	input := []byte{54, 141, 30}
+	obj := TestObject{}
+	should.NotNil(Unmarshal(input, &obj))
+}
+
+func Test_invalid_slice_input(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct{}
+	input := []byte{93}
+	obj := []string{}
+	should.NotNil(Unmarshal(input, &obj))
+}
+
+func Test_invalid_array_input(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct{}
+	input := []byte{93}
+	obj := [0]string{}
+	should.NotNil(Unmarshal(input, &obj))
+}
+
+func Test_invalid_float(t *testing.T) {
+	inputs := []string{
+		`1.e1`, // dot without following digit
+		`1.`,   // dot can not be the last char
+		``,     // empty number
+		`01`,   // extra leading zero
+		`-`,    // negative without digit
+		`--`,   // double negative
+		`--2`,  // double negative
+	}
+	for _, input := range inputs {
+		t.Run(input, func(t *testing.T) {
+			should := require.New(t)
+			iter := ParseString(ConfigDefault, input+",")
+			iter.Skip()
+			should.NotEqual(io.EOF, iter.Error)
+			should.NotNil(iter.Error)
+			v := float64(0)
+			should.NotNil(json.Unmarshal([]byte(input), &v))
+			iter = ParseString(ConfigDefault, input+",")
+			iter.ReadFloat64()
+			should.NotEqual(io.EOF, iter.Error)
+			should.NotNil(iter.Error)
+			iter = ParseString(ConfigDefault, input+",")
+			iter.ReadFloat32()
+			should.NotEqual(io.EOF, iter.Error)
+			should.NotNil(iter.Error)
+		})
+	}
+}
+
+func Test_chan(t *testing.T) {
+	t.Skip("do not support chan")
+
+	type TestObject struct {
+		MyChan  chan bool
+		MyField int
+	}
+
+	should := require.New(t)
+	obj := TestObject{}
+	str, err := json.Marshal(obj)
+	should.Nil(err)
+	should.Equal(``, str)
+}
+
+func Test_invalid_number(t *testing.T) {
+	type Message struct {
+		Number int `json:"number"`
+	}
+	obj := Message{}
+	decoder := ConfigCompatibleWithStandardLibrary.NewDecoder(bytes.NewBufferString(`{"number":"5"}`))
+	err := decoder.Decode(&obj)
+	invalidStr := err.Error()
+	result, err := ConfigCompatibleWithStandardLibrary.Marshal(invalidStr)
+	should := require.New(t)
+	should.Nil(err)
+	result2, err := json.Marshal(invalidStr)
+	should.Nil(err)
+	should.Equal(string(result2), string(result))
+}

jsoniter_io_test.go

@@ -1,13 +1,14 @@
 package jsoniter
 
 import (
-	"testing"
 	"bytes"
+	"github.com/stretchr/testify/require"
 	"io"
+	"testing"
 )
 
 func Test_read_by_one(t *testing.T) {
-	iter := Parse(bytes.NewBufferString("abc"), 1)
+	iter := Parse(ConfigDefault, bytes.NewBufferString("abc"), 1)
 	b := iter.readByte()
 	if iter.Error != nil {
 		t.Fatal(iter.Error)
@@ -19,11 +20,6 @@ func Test_read_by_one(t *testing.T) {
 	if iter.Error != nil {
 		t.Fatal(iter.Error)
 	}
-	iter.unreadByte()
-	if iter.Error == nil {
-		t.FailNow()
-	}
-	iter.Error = nil
 	b = iter.readByte()
 	if iter.Error != nil {
 		t.Fatal(iter.Error)
@@ -34,40 +30,25 @@ func Test_read_by_one(t *testing.T) {
 }
 
 func Test_read_by_two(t *testing.T) {
-	iter := Parse(bytes.NewBufferString("abc"), 2)
+	should := require.New(t)
+	iter := Parse(ConfigDefault, bytes.NewBufferString("abc"), 2)
 	b := iter.readByte()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
-	}
-	if b != 'a' {
-		t.Fatal(b)
-	}
+	should.Nil(iter.Error)
+	should.Equal(byte('a'), b)
 	b = iter.readByte()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
-	}
-	if b != 'b' {
-		t.Fatal(b)
-	}
+	should.Nil(iter.Error)
+	should.Equal(byte('b'), b)
 	iter.unreadByte()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
-	}
+	should.Nil(iter.Error)
 	iter.unreadByte()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
-	}
+	should.Nil(iter.Error)
 	b = iter.readByte()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
-	}
-	if b != 'a' {
-		t.Fatal(b)
-	}
+	should.Nil(iter.Error)
+	should.Equal(byte('a'), b)
 }
 
 func Test_read_until_eof(t *testing.T) {
-	iter := Parse(bytes.NewBufferString("abc"), 2)
+	iter := Parse(ConfigDefault, bytes.NewBufferString("abc"), 2)
 	iter.readByte()
 	iter.readByte()
 	b := iter.readByte()
@@ -81,4 +62,4 @@ func Test_read_until_eof(t *testing.T) {
 	if iter.Error != io.EOF {
 		t.Fatal(iter.Error)
 	}
-}
+}

jsoniter_large_file_test.go

@@ -1,40 +1,144 @@
 package jsoniter
 
 import (
-	"testing"
-	"os"
 	"encoding/json"
 	"io/ioutil"
+	"os"
+	"testing"
 )
 
-func Test_large_file(t *testing.T) {
-	file, err := os.Open("/tmp/large-file.json")
-	if err != nil {
-		t.Fatal(err)
-	}
-	iter := Parse(file, 4096)
-	count := 0
-	for iter.ReadArray() {
-		iter.Skip()
-		count++
-	}
-	if count != 11351 {
-		t.Fatal(count)
-	}
+//func Test_large_file(t *testing.T) {
+//	file, err := os.Open("/tmp/large-file.json")
+//	if err != nil {
+//		t.Fatal(err)
+//	}
+//	iter := Parse(file, 4096)
+//	count := 0
+//	for iter.ReadArray() {
+//		iter.Skip()
+//		count++
+//	}
+//	if count != 11351 {
+//		t.Fatal(count)
+//	}
+//}
+
+func init() {
+	ioutil.WriteFile("/tmp/large-file.json", []byte(`[{
+  "person": {
+    "id": "d50887ca-a6ce-4e59-b89f-14f0b5d03b03",
+    "name": {
+      "fullName": "Leonid Bugaev",
+      "givenName": "Leonid",
+      "familyName": "Bugaev"
+    },
+    "email": "leonsbox@gmail.com",
+    "gender": "male",
+    "location": "Saint Petersburg, Saint Petersburg, RU",
+    "geo": {
+      "city": "Saint Petersburg",
+      "state": "Saint Petersburg",
+      "country": "Russia",
+      "lat": 59.9342802,
+      "lng": 30.3350986
+    },
+    "bio": "Senior engineer at Granify.com",
+    "site": "http://flickfaver.com",
+    "avatar": "https://d1ts43dypk8bqh.cloudfront.net/v1/avatars/d50887ca-a6ce-4e59-b89f-14f0b5d03b03",
+    "employment": {
+      "name": "www.latera.ru",
+      "title": "Software Engineer",
+      "domain": "gmail.com"
+    },
+    "facebook": {
+      "handle": "leonid.bugaev"
+    },
+    "github": {
+      "handle": "buger",
+      "id": 14009,
+      "avatar": "https://avatars.githubusercontent.com/u/14009?v=3",
+      "company": "Granify",
+      "blog": "http://leonsbox.com",
+      "followers": 95,
+      "following": 10
+    },
+    "twitter": {
+      "handle": "flickfaver",
+      "id": 77004410,
+      "bio": null,
+      "followers": 2,
+      "following": 1,
+      "statuses": 5,
+      "favorites": 0,
+      "location": "",
+      "site": "http://flickfaver.com",
+      "avatar": null
+    },
+    "linkedin": {
+      "handle": "in/leonidbugaev"
+    },
+    "googleplus": {
+      "handle": null
+    },
+    "angellist": {
+      "handle": "leonid-bugaev",
+      "id": 61541,
+      "bio": "Senior engineer at Granify.com",
+      "blog": "http://buger.github.com",
+      "site": "http://buger.github.com",
+      "followers": 41,
+      "avatar": "https://d1qb2nb5cznatu.cloudfront.net/users/61541-medium_jpg?1405474390"
+    },
+    "klout": {
+      "handle": null,
+      "score": null
+    },
+    "foursquare": {
+      "handle": null
+    },
+    "aboutme": {
+      "handle": "leonid.bugaev",
+      "bio": null,
+      "avatar": null
+    },
+    "gravatar": {
+      "handle": "buger",
+      "urls": [
+      ],
+      "avatar": "http://1.gravatar.com/avatar/f7c8edd577d13b8930d5522f28123510",
+      "avatars": [
+        {
+          "url": "http://1.gravatar.com/avatar/f7c8edd577d13b8930d5522f28123510",
+          "type": "thumbnail"
+        }
+      ]
+    },
+    "fuzzy": false
+  },
+  "company": "hello"
+}]`), 0666)
 }
 
-
+/*
+200000	      8886 ns/op	    4336 B/op	       6 allocs/op
+50000	     34244 ns/op	    6744 B/op	      14 allocs/op
+*/
 func Benchmark_jsoniter_large_file(b *testing.B) {
 	b.ReportAllocs()
 	for n := 0; n < b.N; n++ {
 		file, _ := os.Open("/tmp/large-file.json")
-		iter := Parse(file, 4096)
+		iter := Parse(ConfigDefault, file, 4096)
 		count := 0
-		for iter.ReadArray() {
+		iter.ReadArrayCB(func(iter *Iterator) bool {
+			// Skip() is strict by default, use --tags jsoniter-sloppy to skip without validation
 			iter.Skip()
 			count++
-		}
+			return true
+		})
 		file.Close()
+		if iter.Error != nil {
+			b.Error(iter.Error)
+		}
 	}
 }
 
@@ -45,6 +149,9 @@ func Benchmark_json_large_file(b *testing.B) {
 		bytes, _ := ioutil.ReadAll(file)
 		file.Close()
 		result := []struct{}{}
-		json.Unmarshal(bytes, &result)
+		err := json.Unmarshal(bytes, &result)
+		if err != nil {
+			b.Error(err)
+		}
 	}
 }

jsoniter_map_test.go

@@ -1,38 +1,160 @@
 package jsoniter
 
 import (
+	"encoding/json"
+	"math/big"
 	"testing"
-	"reflect"
-	"fmt"
+
+	"github.com/stretchr/testify/require"
+	"strings"
 )
 
 func Test_read_map(t *testing.T) {
-	iter := ParseString(`{"hello": "world"}`)
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `{"hello": "world"}`)
 	m := map[string]string{"1": "2"}
-	iter.Read(&m)
-	copy(iter.buf, []byte{0,0,0,0,0,0})
-	if !reflect.DeepEqual(map[string]string{"1": "2", "hello": "world"}, m) {
-		fmt.Println(iter.Error)
-		t.Fatal(m)
-	}
+	iter.ReadVal(&m)
+	copy(iter.buf, []byte{0, 0, 0, 0, 0, 0})
+	should.Equal(map[string]string{"1": "2", "hello": "world"}, m)
 }
 
 func Test_read_map_of_interface(t *testing.T) {
-	iter := ParseString(`{"hello": "world"}`)
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `{"hello": "world"}`)
 	m := map[string]interface{}{"1": "2"}
-	iter.Read(&m)
-	if !reflect.DeepEqual(map[string]interface{}{"1": "2", "hello": "world"}, m) {
-		fmt.Println(iter.Error)
-		t.Fatal(m)
+	iter.ReadVal(&m)
+	should.Equal(map[string]interface{}{"1": "2", "hello": "world"}, m)
+	iter = ParseString(ConfigDefault, `{"hello": "world"}`)
+	should.Equal(map[string]interface{}{"hello": "world"}, iter.Read())
+}
+
+func Test_map_wrapper_any_get_all(t *testing.T) {
+	should := require.New(t)
+	any := Wrap(map[string][]int{"Field1": {1, 2}})
+	should.Equal(`{"Field1":1}`, any.Get('*', 0).ToString())
+	should.Contains(any.Keys(), "Field1")
+
+	// map write to
+	stream := NewStream(ConfigDefault, nil, 0)
+	any.WriteTo(stream)
+	// TODO cannot pass
+	//should.Equal(string(stream.buf), "")
+}
+
+func Test_write_val_map(t *testing.T) {
+	should := require.New(t)
+	val := map[string]string{"1": "2"}
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`{"1":"2"}`, str)
+}
+
+func Test_slice_of_map(t *testing.T) {
+	should := require.New(t)
+	val := []map[string]string{{"1": "2"}}
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`[{"1":"2"}]`, str)
+	val = []map[string]string{}
+	should.Nil(UnmarshalFromString(str, &val))
+	should.Equal("2", val[0]["1"])
+}
+
+func Test_encode_int_key_map(t *testing.T) {
+	should := require.New(t)
+	val := map[int]string{1: "2"}
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`{"1":"2"}`, str)
+}
+
+func Test_decode_int_key_map(t *testing.T) {
+	should := require.New(t)
+	var val map[int]string
+	should.Nil(UnmarshalFromString(`{"1":"2"}`, &val))
+	should.Equal(map[int]string{1: "2"}, val)
+}
+
+func Test_encode_TextMarshaler_key_map(t *testing.T) {
+	should := require.New(t)
+	f, _, _ := big.ParseFloat("1", 10, 64, big.ToZero)
+	val := map[*big.Float]string{f: "2"}
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`{"1":"2"}`, str)
+}
+
+func Test_decode_TextMarshaler_key_map(t *testing.T) {
+	should := require.New(t)
+	var val map[*big.Float]string
+	should.Nil(UnmarshalFromString(`{"1":"2"}`, &val))
+	str, err := MarshalToString(val)
+	should.Nil(err)
+	should.Equal(`{"1":"2"}`, str)
+}
+
+func Test_map_key_with_escaped_char(t *testing.T) {
+	type Ttest struct {
+		Map map[string]string
+	}
+	var jsonBytes = []byte(`
+	{
+	    "Map":{
+		"k\"ey": "val"
+	    }
+	}`)
+	should := require.New(t)
+	{
+		var obj Ttest
+		should.Nil(json.Unmarshal(jsonBytes, &obj))
+		should.Equal(map[string]string{"k\"ey": "val"}, obj.Map)
+	}
+	{
+		var obj Ttest
+		should.Nil(Unmarshal(jsonBytes, &obj))
+		should.Equal(map[string]string{"k\"ey": "val"}, obj.Map)
 	}
 }
 
-func Test_read_map_of_any(t *testing.T) {
-	iter := ParseString(`{"hello": "world"}`)
-	m := map[string]Any{"1": *MakeAny("2")}
-	iter.Read(&m)
-	if !reflect.DeepEqual(map[string]Any{"1": *MakeAny("2"), "hello": *MakeAny("world")}, m) {
-		fmt.Println(iter.Error)
-		t.Fatal(m)
+func Test_encode_map_with_sorted_keys(t *testing.T) {
+	should := require.New(t)
+	m := map[string]interface{}{
+		"3": 3,
+		"1": 1,
+		"2": 2,
 	}
+	bytes, err := json.Marshal(m)
+	should.Nil(err)
+	output, err := ConfigCompatibleWithStandardLibrary.MarshalToString(m)
+	should.Nil(err)
+	should.Equal(string(bytes), output)
+}
+
+func Test_encode_map_uint_keys(t *testing.T) {
+	should := require.New(t)
+	m := map[uint64]interface{}{
+		uint64(1): "a",
+		uint64(2): "a",
+		uint64(4): "a",
+	}
+
+	bytes, err := json.Marshal(m)
+	should.Nil(err)
+
+	output, err := ConfigCompatibleWithStandardLibrary.MarshalToString(m)
+	should.Nil(err)
+	should.Equal(string(bytes), output)
+}
+
+func Test_read_map_with_reader(t *testing.T) {
+	should := require.New(t)
+	input := `{"branch":"beta","change_log":"add the rows{10}","channel":"fros","create_time":"2017-06-13 16:39:08","firmware_list":"","md5":"80dee2bf7305bcf179582088e29fd7b9","note":{"CoreServices":{"md5":"d26975c0a8c7369f70ed699f2855cc2e","package_name":"CoreServices","version_code":"76","version_name":"1.0.76"},"FrDaemon":{"md5":"6b1f0626673200bc2157422cd2103f5d","package_name":"FrDaemon","version_code":"390","version_name":"1.0.390"},"FrGallery":{"md5":"90d767f0f31bcd3c1d27281ec979ba65","package_name":"FrGallery","version_code":"349","version_name":"1.0.349"},"FrLocal":{"md5":"f15a215b2c070a80a01f07bde4f219eb","package_name":"FrLocal","version_code":"791","version_name":"1.0.791"}},"pack_region_urls":{"CN":"https://s3.cn-north-1.amazonaws.com.cn/xxx-os/ttt_xxx_android_1.5.3.344.393.zip","default":"http://192.168.8.78/ttt_xxx_android_1.5.3.344.393.zip","local":"http://192.168.8.78/ttt_xxx_android_1.5.3.344.393.zip"},"pack_version":"1.5.3.344.393","pack_version_code":393,"region":"all","release_flag":0,"revision":62,"size":38966875,"status":3}`
+	reader := strings.NewReader(input)
+	decoder := ConfigCompatibleWithStandardLibrary.NewDecoder(reader)
+	m1 := map[string]interface{}{}
+	should.Nil(decoder.Decode(&m1))
+	m2 := map[string]interface{}{}
+	should.Nil(json.Unmarshal([]byte(input), &m2))
+	should.Equal(m2, m1)
+	should.Equal("1.0.76", m1["note"].(map[string]interface{})["CoreServices"].(map[string]interface{})["version_name"])
 }

jsoniter_must_be_valid_test.go

@@ -0,0 +1,71 @@
+package jsoniter
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+// if must be valid is useless, just drop this test
+func Test_must_be_valid(t *testing.T) {
+	should := require.New(t)
+	any := Get([]byte("123"))
+	should.Equal(any.MustBeValid().ToInt(), 123)
+
+	any = Wrap(int8(10))
+	should.Equal(any.MustBeValid().ToInt(), 10)
+
+	any = Wrap(int16(10))
+	should.Equal(any.MustBeValid().ToInt(), 10)
+
+	any = Wrap(int32(10))
+	should.Equal(any.MustBeValid().ToInt(), 10)
+
+	any = Wrap(int64(10))
+	should.Equal(any.MustBeValid().ToInt(), 10)
+
+	any = Wrap(uint(10))
+	should.Equal(any.MustBeValid().ToInt(), 10)
+
+	any = Wrap(uint8(10))
+	should.Equal(any.MustBeValid().ToInt(), 10)
+
+	any = Wrap(uint16(10))
+	should.Equal(any.MustBeValid().ToInt(), 10)
+
+	any = Wrap(uint32(10))
+	should.Equal(any.MustBeValid().ToInt(), 10)
+
+	any = Wrap(uint64(10))
+	should.Equal(any.MustBeValid().ToInt(), 10)
+
+	any = Wrap(float32(10))
+	should.Equal(any.MustBeValid().ToFloat64(), float64(10))
+
+	any = Wrap(float64(10))
+	should.Equal(any.MustBeValid().ToFloat64(), float64(10))
+
+	any = Wrap(true)
+	should.Equal(any.MustBeValid().ToFloat64(), float64(1))
+
+	any = Wrap(false)
+	should.Equal(any.MustBeValid().ToFloat64(), float64(0))
+
+	any = Wrap(nil)
+	should.Equal(any.MustBeValid().ToFloat64(), float64(0))
+
+	any = Wrap(struct{ age int }{age: 1})
+	should.Equal(any.MustBeValid().ToFloat64(), float64(0))
+
+	any = Wrap(map[string]interface{}{"abc": 1})
+	should.Equal(any.MustBeValid().ToFloat64(), float64(0))
+
+	any = Wrap("abc")
+	should.Equal(any.MustBeValid().ToFloat64(), float64(0))
+
+	any = Wrap([]int{})
+	should.Equal(any.MustBeValid().ToFloat64(), float64(0))
+
+	any = Wrap([]int{1, 2})
+	should.Equal(any.MustBeValid().ToFloat64(), float64(1))
+}

jsoniter_nested_test.go

@@ -1,9 +1,9 @@
 package jsoniter
 
 import (
-	"testing"
-	"reflect"
 	"encoding/json"
+	"reflect"
+	"testing"
 )
 
 type Level1 struct {
@@ -15,7 +15,7 @@ type Level2 struct {
 }
 
 func Test_nested(t *testing.T) {
-	iter := ParseString(`{"hello": [{"world": "value1"}, {"world": "value2"}]}`)
+	iter := ParseString(ConfigDefault, `{"hello": [{"world": "value1"}, {"world": "value2"}]}`)
 	l1 := Level1{}
 	for l1Field := iter.ReadObject(); l1Field != ""; l1Field = iter.ReadObject() {
 		switch l1Field {
@@ -28,14 +28,14 @@ func Test_nested(t *testing.T) {
 					case "world":
 						l2.World = iter.ReadString()
 					default:
-						iter.ReportError("bind l2", "unexpected field: " + l2Field)
+						iter.ReportError("bind l2", "unexpected field: "+l2Field)
 					}
 				}
 				l2Array = append(l2Array, l2)
 			}
 			l1.Hello = l2Array
 		default:
-			iter.ReportError("bind l1", "unexpected field: " + l1Field)
+			iter.ReportError("bind l1", "unexpected field: "+l1Field)
 		}
 	}
 	if !reflect.DeepEqual(l1, Level1{
@@ -50,7 +50,7 @@ func Test_nested(t *testing.T) {
 
 func Benchmark_jsoniter_nested(b *testing.B) {
 	for n := 0; n < b.N; n++ {
-		iter := ParseString(`{"hello": [{"world": "value1"}, {"world": "value2"}]}`)
+		iter := ParseString(ConfigDefault, `{"hello": [{"world": "value1"}, {"world": "value2"}]}`)
 		l1 := Level1{}
 		for l1Field := iter.ReadObject(); l1Field != ""; l1Field = iter.ReadObject() {
 			switch l1Field {
@@ -85,4 +85,4 @@ func Benchmark_json_nested(b *testing.B) {
 		l1 := Level1{}
 		json.Unmarshal([]byte(`{"hello": [{"world": "value1"}, {"world": "value2"}]}`), &l1)
 	}
-}
+}

jsoniter_null_test.go

@@ -1,18 +1,47 @@
 package jsoniter
 
 import (
+	"bytes"
+	"encoding/json"
+	"github.com/stretchr/testify/require"
+	"io"
 	"testing"
 )
 
-func Test_null(t *testing.T) {
-	iter := ParseString(`null`)
-	if iter.ReadNull() != true {
-		t.FailNow()
-	}
+func Test_read_null(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `null`)
+	should.True(iter.ReadNil())
+	iter = ParseString(ConfigDefault, `null`)
+	should.Nil(iter.Read())
+	iter = ParseString(ConfigDefault, `navy`)
+	iter.Read()
+	should.True(iter.Error != nil && iter.Error != io.EOF)
+	iter = ParseString(ConfigDefault, `navy`)
+	iter.ReadNil()
+	should.True(iter.Error != nil && iter.Error != io.EOF)
 }
 
-func Test_null_object(t *testing.T) {
-	iter := ParseString(`[null,"a"]`)
+func Test_write_null(t *testing.T) {
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 4096)
+	stream.WriteNil()
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("null", buf.String())
+}
+
+func Test_encode_null(t *testing.T) {
+	should := require.New(t)
+	str, err := MarshalToString(nil)
+	should.Nil(err)
+	should.Equal("null", str)
+}
+
+func Test_decode_null_object_field(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `[null,"a"]`)
 	iter.ReadArray()
 	if iter.ReadObject() != "" {
 		t.FailNow()
@@ -21,38 +50,88 @@ func Test_null_object(t *testing.T) {
 	if iter.ReadString() != "a" {
 		t.FailNow()
 	}
+	type TestObject struct {
+		Field string
+	}
+	objs := []TestObject{}
+	should.Nil(UnmarshalFromString("[null]", &objs))
+	should.Len(objs, 1)
 }
 
-func Test_null_array(t *testing.T) {
-	iter := ParseString(`[null,"a"]`)
-	iter.ReadArray()
-	if iter.ReadArray() != false {
-		t.FailNow()
-	}
-	iter.ReadArray()
-	if iter.ReadString() != "a" {
-		t.FailNow()
-	}
+func Test_decode_null_array_element(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `[null,"a"]`)
+	should.True(iter.ReadArray())
+	should.True(iter.ReadNil())
+	should.True(iter.ReadArray())
+	should.Equal("a", iter.ReadString())
 }
 
-func Test_null_string(t *testing.T) {
-	iter := ParseString(`[null,"a"]`)
-	iter.ReadArray()
-	if iter.ReadString() != "" {
-		t.FailNow()
-	}
-	iter.ReadArray()
-	if iter.ReadString() != "a" {
-		t.FailNow()
-	}
+func Test_decode_null_array(t *testing.T) {
+	should := require.New(t)
+	arr := []string{}
+	should.Nil(UnmarshalFromString("null", &arr))
+	should.Nil(arr)
 }
 
-func Test_null_skip(t *testing.T) {
-	iter := ParseString(`[null,"a"]`)
+func Test_decode_null_map(t *testing.T) {
+	should := require.New(t)
+	arr := map[string]string{}
+	should.Nil(UnmarshalFromString("null", &arr))
+	should.Nil(arr)
+}
+
+func Test_decode_null_string(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `[null,"a"]`)
+	should.True(iter.ReadArray())
+	should.Equal("", iter.ReadString())
+	should.True(iter.ReadArray())
+	should.Equal("a", iter.ReadString())
+}
+
+func Test_decode_null_skip(t *testing.T) {
+	iter := ParseString(ConfigDefault, `[null,"a"]`)
 	iter.ReadArray()
 	iter.Skip()
 	iter.ReadArray()
 	if iter.ReadString() != "a" {
 		t.FailNow()
 	}
-}
+}
+
+func Test_encode_nil_map(t *testing.T) {
+	should := require.New(t)
+	type Ttest map[string]string
+	var obj1 Ttest
+	output, err := json.Marshal(obj1)
+	should.Nil(err)
+	should.Equal("null", string(output))
+	output, err = json.Marshal(&obj1)
+	should.Nil(err)
+	should.Equal("null", string(output))
+	output, err = Marshal(obj1)
+	should.Nil(err)
+	should.Equal("null", string(output))
+	output, err = Marshal(&obj1)
+	should.Nil(err)
+	should.Equal("null", string(output))
+}
+
+func Test_encode_nil_array(t *testing.T) {
+	should := require.New(t)
+	type Ttest []string
+	var obj1 Ttest
+	output, err := json.Marshal(obj1)
+	should.Nil(err)
+	should.Equal("null", string(output))
+	output, err = json.Marshal(&obj1)
+	should.Nil(err)
+	should.Equal("null", string(output))
+	output, err = Marshal(obj1)
+	should.Nil(err)
+	should.Equal("null", string(output))
+	output, err = Marshal(&obj1)
+	should.Nil(err)
+	should.Equal("null", string(output))
+}

jsoniter_object_test.go

@@ -1,59 +1,57 @@
 package jsoniter
 
 import (
-	"testing"
-	"encoding/json"
+	"bytes"
 	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
 )
 
 func Test_empty_object(t *testing.T) {
-	iter := ParseString(`{}`)
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `{}`)
 	field := iter.ReadObject()
-	if field != "" {
-		t.Fatal(field)
-	}
+	should.Equal("", field)
+	iter = ParseString(ConfigDefault, `{}`)
+	iter.ReadObjectCB(func(iter *Iterator, field string) bool {
+		should.FailNow("should not call")
+		return true
+	})
 }
 
 func Test_one_field(t *testing.T) {
-	iter := ParseString(`{"a": "b"}`)
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `{"a": "stream"}`)
 	field := iter.ReadObject()
-	if field != "a" {
-		fmt.Println(iter.Error)
-		t.Fatal(field)
-	}
+	should.Equal("a", field)
 	value := iter.ReadString()
-	if value != "b" {
-		t.Fatal(field)
-	}
+	should.Equal("stream", value)
 	field = iter.ReadObject()
-	if field != "" {
-		t.Fatal(field)
-	}
+	should.Equal("", field)
+	iter = ParseString(ConfigDefault, `{"a": "stream"}`)
+	should.True(iter.ReadObjectCB(func(iter *Iterator, field string) bool {
+		should.Equal("a", field)
+		iter.Skip()
+		return true
+	}))
+
 }
 
 func Test_two_field(t *testing.T) {
-	iter := ParseString(`{ "a": "b" , "c": "d" }`)
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `{ "a": "stream" , "c": "d" }`)
 	field := iter.ReadObject()
-	if field != "a" {
-		t.Fatal(field)
-	}
+	should.Equal("a", field)
 	value := iter.ReadString()
-	if value != "b" {
-		t.Fatal(field)
-	}
+	should.Equal("stream", value)
 	field = iter.ReadObject()
-	if field != "c" {
-		t.Fatal(field)
-	}
+	should.Equal("c", field)
 	value = iter.ReadString()
-	if value != "d" {
-		t.Fatal(field)
-	}
+	should.Equal("d", value)
 	field = iter.ReadObject()
-	if field != "" {
-		t.Fatal(field)
-	}
-	iter = ParseString(`{"field1": "1", "field2": 2}`)
+	should.Equal("", field)
+	iter = ParseString(ConfigDefault, `{"field1": "1", "field2": 2}`)
 	for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
 		switch field {
 		case "field1":
@@ -66,31 +64,267 @@ func Test_two_field(t *testing.T) {
 	}
 }
 
-type TestObj struct {
-	Field1 string
-	Field2 uint64
+func Test_object_wrapper_any_get_all(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 []int
+		Field2 []int
+	}
+	any := Wrap(TestObject{[]int{1, 2}, []int{3, 4}})
+	should.Contains(any.Get('*', 0).ToString(), `"Field2":3`)
+	should.Contains(any.Keys(), "Field1")
+	should.Contains(any.Keys(), "Field2")
+	should.NotContains(any.Keys(), "Field3")
+
+	//should.Contains(any.GetObject()["Field1"].GetArray()[0], 1)
 }
 
-func Benchmark_jsoniter_object(b *testing.B) {
-	for n := 0; n < b.N; n++ {
-		iter := ParseString(`{"field1": "1", "field2": 2}`)
-		obj := TestObj{}
-		for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
-			switch field {
-			case "field1":
-				obj.Field1 = iter.ReadString()
-			case "field2":
-				obj.Field2 = iter.ReadUint64()
-			default:
-				iter.ReportError("bind object", "unexpected field")
-			}
-		}
-	}
+func Test_write_object(t *testing.T) {
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(Config{IndentionStep: 2}.Froze(), buf, 4096)
+	stream.WriteObjectStart()
+	stream.WriteObjectField("hello")
+	stream.WriteInt(1)
+	stream.WriteMore()
+	stream.WriteObjectField("world")
+	stream.WriteInt(2)
+	stream.WriteObjectEnd()
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal("{\n  \"hello\": 1,\n  \"world\": 2\n}", buf.String())
 }
 
-func Benchmark_json_object(b *testing.B) {
-	for n := 0; n < b.N; n++ {
-		result := TestObj{}
-		json.Unmarshal([]byte(`{"field1": "1", "field2": 2}`), &result)
+func Test_write_val_zero_field_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+	}
+	obj := TestObject{}
+	str, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{}`, str)
+}
+
+func Test_write_val_one_field_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string `json:"field-1"`
+	}
+	obj := TestObject{"hello"}
+	str, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{"field-1":"hello"}`, str)
+}
+
+func Test_mixed(t *testing.T) {
+	should := require.New(t)
+	type AA struct {
+		ID      int                    `json:"id"`
+		Payload map[string]interface{} `json:"payload"`
+		buf     *bytes.Buffer
+	}
+	aa := AA{}
+	err := UnmarshalFromString(` {"id":1, "payload":{"account":"123","password":"456"}}`, &aa)
+	should.Nil(err)
+	should.Equal(1, aa.ID)
+	should.Equal("123", aa.Payload["account"])
+}
+
+func Test_omit_empty(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string `json:"field-1,omitempty"`
+		Field2 string `json:"field-2,omitempty"`
+		Field3 string `json:"field-3,omitempty"`
+	}
+	obj := TestObject{}
+	obj.Field2 = "hello"
+	str, err := MarshalToString(&obj)
+	should.Nil(err)
+	should.Equal(`{"field-2":"hello"}`, str)
+}
+
+func Test_ignore_field_on_not_valid_type(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string `json:"field-1,omitempty"`
+		Field2 func() `json:"-"`
+	}
+	obj := TestObject{}
+	obj.Field1 = "hello world"
+	obj.Field2 = func() {}
+	str, err := MarshalToString(&obj)
+	should.Nil(err)
+	should.Equal(`{"field-1":"hello world"}`, str)
+}
+
+func Test_recursive_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+		Me     *TestObject
+	}
+	obj := TestObject{}
+	str, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Contains(str, `"Field1":""`)
+	should.Contains(str, `"Me":null`)
+	err = UnmarshalFromString(str, &obj)
+	should.Nil(err)
+}
+
+func Test_encode_anonymous_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field string
+	}
+	str, err := MarshalToString(struct {
+		TestObject
+		Field int
+	}{
+		Field: 100,
+	})
+	should.Nil(err)
+	should.Equal(`{"Field":100}`, str)
+}
+
+func Test_decode_anonymous_struct(t *testing.T) {
+	should := require.New(t)
+	type Inner struct {
+		Key string `json:"key"`
+	}
+
+	type Outer struct {
+		Inner
+	}
+	var outer Outer
+	j := []byte("{\"key\":\"value\"}")
+	should.Nil(Unmarshal(j, &outer))
+	should.Equal("value", outer.Key)
+}
+
+func Test_multiple_level_anonymous_struct(t *testing.T) {
+	type Level1 struct {
+		Field1 string
+	}
+	type Level2 struct {
+		Level1
+		Field2 string
+	}
+	type Level3 struct {
+		Level2
+		Field3 string
+	}
+	should := require.New(t)
+	obj := Level3{Level2{Level1{"1"}, "2"}, "3"}
+	output, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Equal(`{"Field1":"1","Field2":"2","Field3":"3"}`, output)
+}
+
+func Test_multiple_level_anonymous_struct_with_ptr(t *testing.T) {
+	type Level1 struct {
+		Field1 string
+		Field2 string
+		Field4 string
+	}
+	type Level2 struct {
+		*Level1
+		Field2 string
+		Field3 string
+	}
+	type Level3 struct {
+		*Level2
+		Field3 string
+	}
+	should := require.New(t)
+	obj := Level3{&Level2{&Level1{"1", "", "4"}, "2", ""}, "3"}
+	output, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Contains(output, `"Field1":"1"`)
+	should.Contains(output, `"Field2":"2"`)
+	should.Contains(output, `"Field3":"3"`)
+	should.Contains(output, `"Field4":"4"`)
+}
+
+func Test_shadow_struct_field(t *testing.T) {
+	should := require.New(t)
+	type omit *struct{}
+	type CacheItem struct {
+		Key    string `json:"key"`
+		MaxAge int    `json:"cacheAge"`
+	}
+	output, err := MarshalToString(struct {
+		*CacheItem
+
+		// Omit bad keys
+		OmitMaxAge omit `json:"cacheAge,omitempty"`
+
+		// Add nice keys
+		MaxAge int `json:"max_age"`
+	}{
+		CacheItem: &CacheItem{
+			Key:    "value",
+			MaxAge: 100,
+		},
+		MaxAge: 20,
+	})
+	should.Nil(err)
+	should.Contains(output, `"key":"value"`)
+	should.Contains(output, `"max_age":20`)
+}
+
+func Test_embedded_order(t *testing.T) {
+	type A struct {
+		Field2 string
+	}
+
+	type C struct {
+		Field5 string
+	}
+
+	type B struct {
+		Field4 string
+		C
+		Field6 string
+	}
+
+	type TestObject struct {
+		Field1 string
+		A
+		Field3 string
+		B
+		Field7 string
+	}
+	should := require.New(t)
+	s := TestObject{}
+	output, err := MarshalToString(s)
+	should.Nil(err)
+	should.Equal(`{"Field1":"","Field2":"","Field3":"","Field4":"","Field5":"","Field6":"","Field7":""}`, output)
+}
+
+func Test_decode_nested(t *testing.T) {
+	type StructOfString struct {
+		Field1 string
+		Field2 string
+	}
+	iter := ParseString(ConfigDefault, `[{"field1": "hello"}, null, {"field2": "world"}]`)
+	slice := []*StructOfString{}
+	iter.ReadVal(&slice)
+	if len(slice) != 3 {
+		fmt.Println(iter.Error)
+		t.Fatal(len(slice))
+	}
+	if slice[0].Field1 != "hello" {
+		fmt.Println(iter.Error)
+		t.Fatal(slice[0])
+	}
+	if slice[1] != nil {
+		fmt.Println(iter.Error)
+		t.Fatal(slice[1])
+	}
+	if slice[2].Field2 != "world" {
+		fmt.Println(iter.Error)
+		t.Fatal(slice[2])
 	}
 }

jsoniter_optional_test.go

@@ -0,0 +1,46 @@
+package jsoniter
+
+import (
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func Test_encode_optional_int_pointer(t *testing.T) {
+	should := require.New(t)
+	var ptr *int
+	str, err := MarshalToString(ptr)
+	should.Nil(err)
+	should.Equal("null", str)
+	val := 100
+	ptr = &val
+	str, err = MarshalToString(ptr)
+	should.Nil(err)
+	should.Equal("100", str)
+}
+
+func Test_decode_struct_with_optional_field(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 *string
+		Field2 *string
+	}
+	obj := TestObject{}
+	UnmarshalFromString(`{"field1": null, "field2": "world"}`, &obj)
+	should.Nil(obj.Field1)
+	should.Equal("world", *obj.Field2)
+}
+
+func Test_encode_struct_with_optional_field(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 *string
+		Field2 *string
+	}
+	obj := TestObject{}
+	world := "world"
+	obj.Field2 = &world
+	str, err := MarshalToString(obj)
+	should.Nil(err)
+	should.Contains(str, `"Field1":null`)
+	should.Contains(str, `"Field2":"world"`)
+}

jsoniter_raw_message_test.go

@@ -0,0 +1,74 @@
+package jsoniter
+
+import (
+	"encoding/json"
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func Test_json_RawMessage(t *testing.T) {
+	should := require.New(t)
+	var data json.RawMessage
+	should.Nil(Unmarshal([]byte(`[1,2,3]`), &data))
+	should.Equal(`[1,2,3]`, string(data))
+	str, err := MarshalToString(data)
+	should.Nil(err)
+	should.Equal(`[1,2,3]`, str)
+}
+
+func Test_jsoniter_RawMessage(t *testing.T) {
+	should := require.New(t)
+	var data RawMessage
+	should.Nil(Unmarshal([]byte(`[1,2,3]`), &data))
+	should.Equal(`[1,2,3]`, string(data))
+	str, err := MarshalToString(data)
+	should.Nil(err)
+	should.Equal(`[1,2,3]`, str)
+}
+
+func Test_json_RawMessage_in_struct(t *testing.T) {
+	type TestObject struct {
+		Field1 string
+		Field2 json.RawMessage
+	}
+	should := require.New(t)
+	var data TestObject
+	should.Nil(Unmarshal([]byte(`{"field1": "hello", "field2": [1,2,3]}`), &data))
+	should.Equal(` [1,2,3]`, string(data.Field2))
+	should.Equal(`hello`, data.Field1)
+}
+
+func Test_decode_map_of_raw_message(t *testing.T) {
+	should := require.New(t)
+	type RawMap map[string]*json.RawMessage
+	b := []byte("{\"test\":[{\"key\":\"value\"}]}")
+	var rawMap RawMap
+	should.Nil(Unmarshal(b, &rawMap))
+	should.Equal(`[{"key":"value"}]`, string(*rawMap["test"]))
+	type Inner struct {
+		Key string `json:"key"`
+	}
+	var inner []Inner
+	Unmarshal(*rawMap["test"], &inner)
+	should.Equal("value", inner[0].Key)
+}
+
+func Test_encode_map_of_raw_message(t *testing.T) {
+	should := require.New(t)
+	type RawMap map[string]*json.RawMessage
+	value := json.RawMessage("[]")
+	rawMap := RawMap{"hello": &value}
+	output, err := MarshalToString(rawMap)
+	should.Nil(err)
+	should.Equal(`{"hello":[]}`, output)
+}
+
+func Test_encode_map_of_jsoniter_raw_message(t *testing.T) {
+	should := require.New(t)
+	type RawMap map[string]*RawMessage
+	value := RawMessage("[]")
+	rawMap := RawMap{"hello": &value}
+	output, err := MarshalToString(rawMap)
+	should.Nil(err)
+	should.Equal(`{"hello":[]}`, output)
+}

jsoniter_reader_test.go

@@ -0,0 +1,57 @@
+package jsoniter
+
+import (
+	"github.com/stretchr/testify/require"
+	"strings"
+	"testing"
+	"time"
+)
+
+func Test_reader_and_load_more(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		CreatedAt time.Time
+	}
+	reader := strings.NewReader(`
+{
+	"agency": null,
+	"candidateId": 0,
+	"candidate": "Blah Blah",
+	"bookingId": 0,
+	"shiftId": 1,
+	"shiftTypeId": 0,
+	"shift": "Standard",
+	"bonus": 0,
+	"bonusNI": 0,
+	"days": [],
+	"totalHours": 27,
+	"expenses": [],
+	"weekEndingDateSystem": "2016-10-09",
+	"weekEndingDateClient": "2016-10-09",
+	"submittedAt": null,
+	"submittedById": null,
+	"approvedAt": "2016-10-10T18:38:04Z",
+	"approvedById": 0,
+	"authorisedAt": "2016-10-10T18:38:04Z",
+	"authorisedById": 0,
+	"invoicedAt": "2016-10-10T20:00:00Z",
+	"revokedAt": null,
+	"revokedById": null,
+	"revokeReason": null,
+	"rejectedAt": null,
+	"rejectedById": null,
+	"rejectReasonCode": null,
+	"rejectReason": null,
+	"createdAt": "2016-10-03T00:00:00Z",
+	"updatedAt": "2016-11-09T10:26:13Z",
+	"updatedById": null,
+	"overrides": [],
+	"bookingApproverId": null,
+	"bookingApprover": null,
+	"status": "approved"
+}
+	`)
+	decoder := ConfigCompatibleWithStandardLibrary.NewDecoder(reader)
+	obj := TestObject{}
+	should.Nil(decoder.Decode(&obj))
+}

jsoniter_reflect.go

@@ -1,819 +0,0 @@
-package jsoniter
-
-import (
-	"reflect"
-	"errors"
-	"fmt"
-	"unsafe"
-	"sync/atomic"
-	"strings"
-	"io"
-	"strconv"
-)
-
-type Decoder interface {
-	decode(ptr unsafe.Pointer, iter *Iterator)
-}
-
-type stringDecoder struct {
-}
-
-func (decoder *stringDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*string)(ptr)) = iter.ReadString()
-}
-
-type intDecoder struct {
-}
-
-func (decoder *intDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*int)(ptr)) = iter.ReadInt()
-}
-
-type int8Decoder struct {
-}
-
-func (decoder *int8Decoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*int8)(ptr)) = iter.ReadInt8()
-}
-
-type int16Decoder struct {
-}
-
-func (decoder *int16Decoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*int16)(ptr)) = iter.ReadInt16()
-}
-
-type int32Decoder struct {
-}
-
-func (decoder *int32Decoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*int32)(ptr)) = iter.ReadInt32()
-}
-
-type int64Decoder struct {
-}
-
-func (decoder *int64Decoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*int64)(ptr)) = iter.ReadInt64()
-}
-
-type uintDecoder struct {
-}
-
-func (decoder *uintDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*uint)(ptr)) = iter.ReadUint()
-}
-
-type uint8Decoder struct {
-}
-
-func (decoder *uint8Decoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*uint8)(ptr)) = iter.ReadUint8()
-}
-
-type uint16Decoder struct {
-}
-
-func (decoder *uint16Decoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*uint16)(ptr)) = iter.ReadUint16()
-}
-
-type uint32Decoder struct {
-}
-
-func (decoder *uint32Decoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*uint32)(ptr)) = iter.ReadUint32()
-}
-
-type uint64Decoder struct {
-}
-
-func (decoder *uint64Decoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*uint64)(ptr)) = iter.ReadUint64()
-}
-
-type float32Decoder struct {
-}
-
-func (decoder *float32Decoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*float32)(ptr)) = iter.ReadFloat32()
-}
-
-type float64Decoder struct {
-}
-
-func (decoder *float64Decoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*float64)(ptr)) = iter.ReadFloat64()
-}
-
-type boolDecoder struct {
-}
-
-func (decoder *boolDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*bool)(ptr)) = iter.ReadBool()
-}
-
-type interfaceDecoder struct {
-}
-
-func (decoder *interfaceDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*interface{})(ptr)) = iter.ReadAny().Get()
-}
-
-
-type anyDecoder struct {
-}
-
-func (decoder *anyDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	*((*Any)(ptr)) = *iter.ReadAny()
-}
-
-type stringNumberDecoder struct {
-	elemDecoder Decoder
-}
-
-func (decoder *stringNumberDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	c := iter.readByte()
-	if c != '"' {
-		iter.ReportError("stringNumberDecoder", `expect "`)
-		return
-	}
-	decoder.elemDecoder.decode(ptr, iter)
-	if iter.Error != nil {
-		return
-	}
-	c = iter.readByte()
-	if c != '"' {
-		iter.ReportError("stringNumberDecoder", `expect "`)
-		return
-	}
-}
-
-type optionalDecoder struct {
-	valueType    reflect.Type
-	valueDecoder Decoder
-}
-
-func (decoder *optionalDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	if iter.ReadNull() {
-		*((*unsafe.Pointer)(ptr)) = nil
-	} else {
-		value := reflect.New(decoder.valueType)
-		decoder.valueDecoder.decode(unsafe.Pointer(value.Pointer()), iter)
-		*((*uintptr)(ptr)) = value.Pointer()
-	}
-}
-
-type generalStructDecoder struct {
-	type_  reflect.Type
-	fields map[string]*structFieldDecoder
-}
-
-func (decoder *generalStructDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
-		fieldDecoder := decoder.fields[field]
-		if fieldDecoder == nil {
-			iter.Skip()
-		} else {
-			fieldDecoder.decode(ptr, iter)
-		}
-	}
-	if iter.Error != nil && iter.Error != io.EOF {
-		iter.Error = fmt.Errorf("%v: %s", decoder.type_, iter.Error.Error())
-	}
-}
-
-type skipDecoder struct {
-	type_ reflect.Type
-}
-
-func (decoder *skipDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	iter.Skip()
-	if iter.Error != nil && iter.Error != io.EOF {
-		iter.Error = fmt.Errorf("%v: %s", decoder.type_, iter.Error.Error())
-	}
-}
-
-type oneFieldStructDecoder struct {
-	type_        reflect.Type
-	fieldName    string
-	fieldDecoder *structFieldDecoder
-}
-
-func (decoder *oneFieldStructDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
-		if field == decoder.fieldName {
-			decoder.fieldDecoder.decode(ptr, iter)
-		} else {
-			iter.Skip()
-		}
-	}
-	if iter.Error != nil && iter.Error != io.EOF {
-		iter.Error = fmt.Errorf("%v: %s", decoder.type_, iter.Error.Error())
-	}
-}
-
-type twoFieldsStructDecoder struct {
-	type_         reflect.Type
-	fieldName1    string
-	fieldDecoder1 *structFieldDecoder
-	fieldName2    string
-	fieldDecoder2 *structFieldDecoder
-}
-
-func (decoder *twoFieldsStructDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
-		switch field {
-		case decoder.fieldName1:
-			decoder.fieldDecoder1.decode(ptr, iter)
-		case decoder.fieldName2:
-			decoder.fieldDecoder2.decode(ptr, iter)
-		default:
-			iter.Skip()
-		}
-	}
-	if iter.Error != nil && iter.Error != io.EOF {
-		iter.Error = fmt.Errorf("%v: %s", decoder.type_, iter.Error.Error())
-	}
-}
-
-type threeFieldsStructDecoder struct {
-	type_         reflect.Type
-	fieldName1    string
-	fieldDecoder1 *structFieldDecoder
-	fieldName2    string
-	fieldDecoder2 *structFieldDecoder
-	fieldName3    string
-	fieldDecoder3 *structFieldDecoder
-}
-
-func (decoder *threeFieldsStructDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
-		switch field {
-		case decoder.fieldName1:
-			decoder.fieldDecoder1.decode(ptr, iter)
-		case decoder.fieldName2:
-			decoder.fieldDecoder2.decode(ptr, iter)
-		case decoder.fieldName3:
-			decoder.fieldDecoder3.decode(ptr, iter)
-		default:
-			iter.Skip()
-		}
-	}
-	if iter.Error != nil && iter.Error != io.EOF {
-		iter.Error = fmt.Errorf("%v: %s", decoder.type_, iter.Error.Error())
-	}
-}
-
-type fourFieldsStructDecoder struct {
-	type_         reflect.Type
-	fieldName1    string
-	fieldDecoder1 *structFieldDecoder
-	fieldName2    string
-	fieldDecoder2 *structFieldDecoder
-	fieldName3    string
-	fieldDecoder3 *structFieldDecoder
-	fieldName4    string
-	fieldDecoder4 *structFieldDecoder
-}
-
-func (decoder *fourFieldsStructDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
-		switch field {
-		case decoder.fieldName1:
-			decoder.fieldDecoder1.decode(ptr, iter)
-		case decoder.fieldName2:
-			decoder.fieldDecoder2.decode(ptr, iter)
-		case decoder.fieldName3:
-			decoder.fieldDecoder3.decode(ptr, iter)
-		case decoder.fieldName4:
-			decoder.fieldDecoder4.decode(ptr, iter)
-		default:
-			iter.Skip()
-		}
-	}
-	if iter.Error != nil && iter.Error != io.EOF {
-		iter.Error = fmt.Errorf("%v: %s", decoder.type_, iter.Error.Error())
-	}
-}
-
-type structFieldDecoder struct {
-	field        *reflect.StructField
-	fieldDecoder Decoder
-}
-
-func (decoder *structFieldDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	fieldPtr := uintptr(ptr) + decoder.field.Offset
-	decoder.fieldDecoder.decode(unsafe.Pointer(fieldPtr), iter)
-	if iter.Error != nil && iter.Error != io.EOF {
-		iter.Error = fmt.Errorf("%s: %s", decoder.field.Name, iter.Error.Error())
-	}
-}
-
-type mapDecoder struct {
-	mapType  reflect.Type
-	elemType  reflect.Type
-	elemDecoder Decoder
-	mapInterface emptyInterface
-}
-
-func (decoder *mapDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	// dark magic to cast unsafe.Pointer back to interface{} using reflect.Type
-	mapInterface := decoder.mapInterface
-	mapInterface.word = ptr
-	realInterface := (*interface{})(unsafe.Pointer(&mapInterface))
-	realVal := reflect.ValueOf(*realInterface).Elem()
-
-	for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
-		elem := reflect.New(decoder.elemType)
-		decoder.elemDecoder.decode(unsafe.Pointer(elem.Pointer()), iter)
-		realVal.SetMapIndex(reflect.ValueOf(string([]byte(field))), elem.Elem())
-	}
-}
-
-type sliceDecoder struct {
-	sliceType   reflect.Type
-	elemType    reflect.Type
-	elemDecoder Decoder
-}
-
-// sliceHeader is a safe version of SliceHeader used within this package.
-type sliceHeader struct {
-	Data unsafe.Pointer
-	Len  int
-	Cap  int
-}
-
-func (decoder *sliceDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	decoder.doDecode(ptr, iter)
-	if iter.Error != nil && iter.Error != io.EOF {
-		iter.Error = fmt.Errorf("%v: %s", decoder.sliceType, iter.Error.Error())
-	}
-}
-
-func (decoder *sliceDecoder) doDecode(ptr unsafe.Pointer, iter *Iterator) {
-	slice := (*sliceHeader)(ptr)
-	reuseSlice(slice, decoder.sliceType, 4)
-	if !iter.ReadArray() {
-		return
-	}
-	offset := uintptr(0)
-	decoder.elemDecoder.decode(unsafe.Pointer(uintptr(slice.Data) + offset), iter)
-	if !iter.ReadArray() {
-		slice.Len = 1
-		return
-	}
-	offset += decoder.elemType.Size()
-	decoder.elemDecoder.decode(unsafe.Pointer(uintptr(slice.Data) + offset), iter)
-	if !iter.ReadArray() {
-		slice.Len = 2
-		return
-	}
-	offset += decoder.elemType.Size()
-	decoder.elemDecoder.decode(unsafe.Pointer(uintptr(slice.Data) + offset), iter)
-	if !iter.ReadArray() {
-		slice.Len = 3
-		return
-	}
-	offset += decoder.elemType.Size()
-	decoder.elemDecoder.decode(unsafe.Pointer(uintptr(slice.Data) + offset), iter)
-	slice.Len = 4
-	for iter.ReadArray() {
-		growOne(slice, decoder.sliceType, decoder.elemType)
-		offset += decoder.elemType.Size()
-		decoder.elemDecoder.decode(unsafe.Pointer(uintptr(slice.Data) + offset), iter)
-	}
-}
-
-// grow grows the slice s so that it can hold extra more values, allocating
-// more capacity if needed. It also returns the old and new slice lengths.
-func growOne(slice *sliceHeader, sliceType reflect.Type, elementType reflect.Type) {
-	newLen := slice.Len + 1
-	if newLen <= slice.Cap {
-		slice.Len = newLen
-		return
-	}
-	newCap := slice.Cap
-	if newCap == 0 {
-		newCap = 1
-	} else {
-		for newCap < newLen {
-			if slice.Len < 1024 {
-				newCap += newCap
-			} else {
-				newCap += newCap / 4
-			}
-		}
-	}
-	dst := unsafe.Pointer(reflect.MakeSlice(sliceType, newLen, newCap).Pointer())
-	originalBytesCount := uintptr(slice.Len) * elementType.Size()
-	srcPtr := (*[1 << 30]byte)(slice.Data)
-	dstPtr := (*[1 << 30]byte)(dst)
-	for i := uintptr(0); i < originalBytesCount; i++ {
-		dstPtr[i] = srcPtr[i]
-	}
-	slice.Len = newLen
-	slice.Cap = newCap
-	slice.Data = dst
-}
-
-func reuseSlice(slice *sliceHeader, sliceType reflect.Type, expectedCap int) {
-	if expectedCap <= slice.Cap {
-		return
-	}
-	dst := unsafe.Pointer(reflect.MakeSlice(sliceType, 0, expectedCap).Pointer())
-	slice.Cap = expectedCap
-	slice.Data = dst
-}
-
-var DECODERS unsafe.Pointer
-
-func addDecoderToCache(cacheKey reflect.Type, decoder Decoder) {
-	retry := true
-	for retry {
-		ptr := atomic.LoadPointer(&DECODERS)
-		cache := *(*map[reflect.Type]Decoder)(ptr)
-		copy := map[reflect.Type]Decoder{}
-		for k, v := range cache {
-			copy[k] = v
-		}
-		copy[cacheKey] = decoder
-		retry = !atomic.CompareAndSwapPointer(&DECODERS, ptr, unsafe.Pointer(&copy))
-	}
-}
-
-func getDecoderFromCache(cacheKey reflect.Type) Decoder {
-	ptr := atomic.LoadPointer(&DECODERS)
-	cache := *(*map[reflect.Type]Decoder)(ptr)
-	return cache[cacheKey]
-}
-
-var typeDecoders map[string]Decoder
-var fieldDecoders map[string]Decoder
-var fieldCustomizers []FieldCustomizerFunc
-
-func init() {
-	typeDecoders = map[string]Decoder{}
-	fieldDecoders = map[string]Decoder{}
-	fieldCustomizers = []FieldCustomizerFunc{}
-	atomic.StorePointer(&DECODERS, unsafe.Pointer(&map[string]Decoder{}))
-}
-
-type DecoderFunc func(ptr unsafe.Pointer, iter *Iterator)
-type FieldCustomizerFunc func(type_ reflect.Type, field *reflect.StructField) ([]string, DecoderFunc)
-
-type funcDecoder struct {
-	func_ DecoderFunc
-}
-
-func (decoder *funcDecoder) decode(ptr unsafe.Pointer, iter *Iterator) {
-	decoder.func_(ptr, iter)
-}
-
-func RegisterTypeDecoder(type_ string, func_ DecoderFunc) {
-	typeDecoders[type_] = &funcDecoder{func_}
-}
-
-func RegisterFieldDecoder(type_ string, field string, func_ DecoderFunc) {
-	fieldDecoders[fmt.Sprintf("%s/%s", type_, field)] = &funcDecoder{func_}
-}
-
-func RegisterFieldCustomizer(func_ FieldCustomizerFunc) {
-	fieldCustomizers = append(fieldCustomizers, func_)
-}
-
-func ClearDecoders() {
-	typeDecoders = map[string]Decoder{}
-	fieldDecoders = map[string]Decoder{}
-}
-
-// emptyInterface is the header for an interface{} value.
-type emptyInterface struct {
-	typ  *struct{}
-	word unsafe.Pointer
-}
-
-func (iter *Iterator) ReadAny() (ret *Any) {
-	valueType := iter.WhatIsNext()
-	switch valueType {
-	case String:
-		return MakeAny(iter.ReadString())
-	case Number:
-		return iter.readNumber()
-	case Null:
-		return MakeAny(nil)
-	case Bool:
-		return MakeAny(iter.ReadBool())
-	case Array:
-		val := []interface{}{}
-		for (iter.ReadArray()) {
-			element := iter.ReadAny()
-			if iter.Error != nil {
-				return
-			}
-			val = append(val, element.val)
-		}
-		return MakeAny(val)
-	case Object:
-		val := map[string]interface{}{}
-		for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
-			element := iter.ReadAny()
-			if iter.Error != nil {
-				return
-			}
-			val[string([]byte(field))] = element.val
-		}
-		return MakeAny(val)
-	default:
-		iter.ReportError("ReadAny", fmt.Sprintf("unexpected value type: %v", valueType))
-		return MakeAny(nil)
-	}
-}
-
-
-
-func (iter *Iterator) readNumber() (ret *Any) {
-	strBuf := [8]byte{}
-	str := strBuf[0:0]
-	hasMore := true
-	foundFloat := false
-	foundNegative := false
-	for(hasMore) {
-		for i := iter.head; i < iter.tail; i++ {
-			c := iter.buf[i]
-			switch c {
-			case '-':
-				foundNegative = true
-				str = append(str, c)
-				continue
-			case '+', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
-				str = append(str, c)
-				continue
-			case '.', 'e', 'E':
-				foundFloat = true
-				str = append(str, c)
-				continue
-			default:
-				hasMore = false
-				break
-			}
-		}
-		if hasMore {
-			if !iter.loadMore() {
-				break
-			}
-		}
-	}
-	if iter.Error != nil && iter.Error != io.EOF {
-		return
-	}
-	number := *(*string)(unsafe.Pointer(&str))
-	if foundFloat {
-		val, err := strconv.ParseFloat(number, 64)
-		if err != nil {
-			iter.Error = err
-			return
-		}
-		return MakeAny(val)
-	}
-	if foundNegative {
-		val, err := strconv.ParseInt(number, 10, 64)
-		if err != nil {
-			iter.Error = err
-			return
-		}
-		return MakeAny(val)
-	}
-	val, err := strconv.ParseUint(number, 10, 64)
-	if err != nil {
-		iter.Error = err
-		return
-	}
-	return MakeAny(val)
-}
-
-func (iter *Iterator) Read(obj interface{}) {
-	type_ := reflect.TypeOf(obj)
-	cacheKey := type_.Elem()
-	cachedDecoder := getDecoderFromCache(cacheKey)
-	if cachedDecoder == nil {
-		decoder, err := decoderOfType(type_)
-		if err != nil {
-			iter.Error = err
-			return
-		}
-		cachedDecoder = decoder
-		addDecoderToCache(cacheKey, decoder)
-	}
-	e := (*emptyInterface)(unsafe.Pointer(&obj))
-	cachedDecoder.decode(e.word, iter)
-}
-
-type prefix string
-
-func (p prefix) addTo(decoder Decoder, err error) (Decoder, error) {
-	if err != nil {
-		return nil, fmt.Errorf("%s: %s", p, err.Error())
-	}
-	return decoder, err
-}
-
-func decoderOfType(type_ reflect.Type) (Decoder, error) {
-	switch type_.Kind() {
-	case reflect.Ptr:
-		return prefix("ptr").addTo(decoderOfPtr(type_.Elem()))
-	default:
-		return nil, errors.New("expect ptr")
-	}
-}
-
-func decoderOfPtr(type_ reflect.Type) (Decoder, error) {
-	typeName := type_.String()
-	if typeName == "jsoniter.Any" {
-		return &anyDecoder{}, nil
-	}
-	typeDecoder := typeDecoders[typeName]
-	if typeDecoder != nil {
-		return typeDecoder, nil
-	}
-	switch type_.Kind() {
-	case reflect.String:
-		return &stringDecoder{}, nil
-	case reflect.Int:
-		return &intDecoder{}, nil
-	case reflect.Int8:
-		return &int8Decoder{}, nil
-	case reflect.Int16:
-		return &int16Decoder{}, nil
-	case reflect.Int32:
-		return &int32Decoder{}, nil
-	case reflect.Int64:
-		return &int64Decoder{}, nil
-	case reflect.Uint:
-		return &uintDecoder{}, nil
-	case reflect.Uint8:
-		return &uint8Decoder{}, nil
-	case reflect.Uint16:
-		return &uint16Decoder{}, nil
-	case reflect.Uint32:
-		return &uint32Decoder{}, nil
-	case reflect.Uint64:
-		return &uint64Decoder{}, nil
-	case reflect.Float32:
-		return &float32Decoder{}, nil
-	case reflect.Float64:
-		return &float64Decoder{}, nil
-	case reflect.Bool:
-		return &boolDecoder{}, nil
-	case reflect.Interface:
-		return &interfaceDecoder{}, nil
-	case reflect.Struct:
-		return decoderOfStruct(type_)
-	case reflect.Slice:
-		return prefix("[slice]").addTo(decoderOfSlice(type_))
-	case reflect.Map:
-		return prefix("[map]").addTo(decoderOfMap(type_))
-	case reflect.Ptr:
-		return prefix("[optional]").addTo(decoderOfOptional(type_.Elem()))
-	default:
-		return nil, fmt.Errorf("unsupported type: %v", type_)
-	}
-}
-
-func decoderOfOptional(type_ reflect.Type) (Decoder, error) {
-	decoder, err := decoderOfPtr(type_)
-	if err != nil {
-		return nil, err
-	}
-	return &optionalDecoder{type_, decoder}, nil
-}
-
-func decoderOfStruct(type_ reflect.Type) (Decoder, error) {
-	fields := map[string]*structFieldDecoder{}
-	for i := 0; i < type_.NumField(); i++ {
-		field := type_.Field(i)
-		fieldDecoderKey := fmt.Sprintf("%s/%s", type_.String(), field.Name)
-		var fieldNames []string
-		for _, customizer := range fieldCustomizers {
-			alternativeFieldNames, func_ := customizer(type_, &field)
-			if alternativeFieldNames != nil {
-				fieldNames = alternativeFieldNames
-			}
-			if func_ != nil {
-				fieldDecoders[fieldDecoderKey] = &funcDecoder{func_}
-			}
-		}
-		decoder := fieldDecoders[fieldDecoderKey]
-		tagParts := strings.Split(field.Tag.Get("json"), ",")
-		if fieldNames == nil {
-			switch tagParts[0] {
-			case "":
-				fieldNames = []string{field.Name}
-			case "-":
-				fieldNames = []string{}
-			}
-		}
-		if decoder == nil {
-			var err error
-			decoder, err = decoderOfPtr(field.Type)
-			if err != nil {
-				return prefix(fmt.Sprintf("{%s}", field.Name)).addTo(decoder, err)
-			}
-		}
-		if len(tagParts) > 1 && tagParts[1] == "string" {
-			decoder = &stringNumberDecoder{decoder}
-		}
-		for _, fieldName := range fieldNames {
-			fields[fieldName] = &structFieldDecoder{&field, decoder}
-		}
-	}
-	switch len(fields) {
-	case 0:
-		return &skipDecoder{type_}, nil
-	case 1:
-		for fieldName, fieldDecoder := range fields {
-			return &oneFieldStructDecoder{type_, fieldName, fieldDecoder}, nil
-		}
-	case 2:
-		var fieldName1 string
-		var fieldName2 string
-		var fieldDecoder1 *structFieldDecoder
-		var fieldDecoder2 *structFieldDecoder
-		for fieldName, fieldDecoder := range fields {
-			if fieldName1 == "" {
-				fieldName1 = fieldName
-				fieldDecoder1 = fieldDecoder
-			} else {
-				fieldName2 = fieldName
-				fieldDecoder2 = fieldDecoder
-			}
-		}
-		return &twoFieldsStructDecoder{type_, fieldName1, fieldDecoder1, fieldName2, fieldDecoder2}, nil
-	case 3:
-		var fieldName1 string
-		var fieldName2 string
-		var fieldName3 string
-		var fieldDecoder1 *structFieldDecoder
-		var fieldDecoder2 *structFieldDecoder
-		var fieldDecoder3 *structFieldDecoder
-		for fieldName, fieldDecoder := range fields {
-			if fieldName1 == "" {
-				fieldName1 = fieldName
-				fieldDecoder1 = fieldDecoder
-			} else if fieldName2 == "" {
-				fieldName2 = fieldName
-				fieldDecoder2 = fieldDecoder
-			} else {
-				fieldName3 = fieldName
-				fieldDecoder3 = fieldDecoder
-			}
-		}
-		return &threeFieldsStructDecoder{type_,
-			fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3}, nil
-	case 4:
-		var fieldName1 string
-		var fieldName2 string
-		var fieldName3 string
-		var fieldName4 string
-		var fieldDecoder1 *structFieldDecoder
-		var fieldDecoder2 *structFieldDecoder
-		var fieldDecoder3 *structFieldDecoder
-		var fieldDecoder4 *structFieldDecoder
-		for fieldName, fieldDecoder := range fields {
-			if fieldName1 == "" {
-				fieldName1 = fieldName
-				fieldDecoder1 = fieldDecoder
-			} else if fieldName2 == "" {
-				fieldName2 = fieldName
-				fieldDecoder2 = fieldDecoder
-			} else if fieldName3 == "" {
-				fieldName3 = fieldName
-				fieldDecoder3 = fieldDecoder
-			} else {
-				fieldName4 = fieldName
-				fieldDecoder4 = fieldDecoder
-			}
-		}
-		return &fourFieldsStructDecoder{type_,
-			fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3,
-			fieldName4, fieldDecoder4}, nil
-	}
-	return &generalStructDecoder{type_, fields}, nil
-}
-
-func decoderOfSlice(type_ reflect.Type) (Decoder, error) {
-	decoder, err := decoderOfPtr(type_.Elem())
-	if err != nil {
-		return nil, err
-	}
-	return &sliceDecoder{type_, type_.Elem(), decoder}, nil
-}
-
-func decoderOfMap(type_ reflect.Type) (Decoder, error) {
-	decoder, err := decoderOfPtr(type_.Elem())
-	if err != nil {
-		return nil, err
-	}
-	mapInterface := reflect.New(type_).Interface()
-	return &mapDecoder{type_, type_.Elem(), decoder, *((*emptyInterface)(unsafe.Pointer(&mapInterface)))}, nil
-}

jsoniter_reflect_native_test.go

@@ -0,0 +1,154 @@
+package jsoniter
+
+import (
+	"fmt"
+	"testing"
+)
+
+func Test_reflect_str(t *testing.T) {
+	iter := ParseString(ConfigDefault, `"hello"`)
+	str := ""
+	iter.ReadVal(&str)
+	if str != "hello" {
+		fmt.Println(iter.Error)
+		t.Fatal(str)
+	}
+}
+
+func Test_reflect_ptr_str(t *testing.T) {
+	iter := ParseString(ConfigDefault, `"hello"`)
+	var str *string
+	iter.ReadVal(&str)
+	if *str != "hello" {
+		t.Fatal(str)
+	}
+}
+
+func Test_reflect_int(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := int(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_int8(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := int8(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_int16(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := int16(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_int32(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := int32(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_int64(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := int64(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_uint(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := uint(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_uint8(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := uint8(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_uint16(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := uint16(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_uint32(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := uint32(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_uint64(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := uint64(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_byte(t *testing.T) {
+	iter := ParseString(ConfigDefault, `123`)
+	val := byte(0)
+	iter.ReadVal(&val)
+	if val != 123 {
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_float32(t *testing.T) {
+	iter := ParseString(ConfigDefault, `1.23`)
+	val := float32(0)
+	iter.ReadVal(&val)
+	if val != 1.23 {
+		fmt.Println(iter.Error)
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_float64(t *testing.T) {
+	iter := ParseString(ConfigDefault, `1.23`)
+	val := float64(0)
+	iter.ReadVal(&val)
+	if val != 1.23 {
+		fmt.Println(iter.Error)
+		t.Fatal(val)
+	}
+}
+
+func Test_reflect_bool(t *testing.T) {
+	iter := ParseString(ConfigDefault, `true`)
+	val := false
+	iter.ReadVal(&val)
+	if val != true {
+		fmt.Println(iter.Error)
+		t.Fatal(val)
+	}
+}

jsoniter_reflect_test.go

@@ -1,341 +0,0 @@
-package jsoniter
-
-import (
-	"testing"
-	"fmt"
-	"encoding/json"
-	"unsafe"
-)
-
-func Test_reflect_str(t *testing.T) {
-	iter := ParseString(`"hello"`)
-	str := ""
-	iter.Read(&str)
-	if str != "hello" {
-		fmt.Println(iter.Error)
-		t.Fatal(str)
-	}
-}
-
-func Test_reflect_ptr_str(t *testing.T) {
-	iter := ParseString(`"hello"`)
-	var str *string
-	iter.Read(&str)
-	if *str != "hello" {
-		t.Fatal(str)
-	}
-}
-
-func Test_reflect_int(t *testing.T) {
-	iter := ParseString(`123`)
-	val := int(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_int8(t *testing.T) {
-	iter := ParseString(`123`)
-	val := int8(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_int16(t *testing.T) {
-	iter := ParseString(`123`)
-	val := int16(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_int32(t *testing.T) {
-	iter := ParseString(`123`)
-	val := int32(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_int64(t *testing.T) {
-	iter := ParseString(`123`)
-	val := int64(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_uint(t *testing.T) {
-	iter := ParseString(`123`)
-	val := uint(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_uint8(t *testing.T) {
-	iter := ParseString(`123`)
-	val := uint8(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_uint16(t *testing.T) {
-	iter := ParseString(`123`)
-	val := uint16(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_uint32(t *testing.T) {
-	iter := ParseString(`123`)
-	val := uint32(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_uint64(t *testing.T) {
-	iter := ParseString(`123`)
-	val := uint64(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_byte(t *testing.T) {
-	iter := ParseString(`123`)
-	val := byte(0)
-	iter.Read(&val)
-	if val != 123 {
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_float32(t *testing.T) {
-	iter := ParseString(`1.23`)
-	val := float32(0)
-	iter.Read(&val)
-	if val != 1.23 {
-		fmt.Println(iter.Error)
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_float64(t *testing.T) {
-	iter := ParseString(`1.23`)
-	val := float64(0)
-	iter.Read(&val)
-	if val != 1.23 {
-		fmt.Println(iter.Error)
-		t.Fatal(val)
-	}
-}
-
-func Test_reflect_bool(t *testing.T) {
-	iter := ParseString(`true`)
-	val := false
-	iter.Read(&val)
-	if val != true {
-		fmt.Println(iter.Error)
-		t.Fatal(val)
-	}
-}
-
-type StructOfString struct {
-	field1 string
-	field2 string
-}
-
-func Test_reflect_struct_string(t *testing.T) {
-	iter := ParseString(`{"field1": "hello", "field2": "world"}`)
-	struct_ := StructOfString{}
-	iter.Read(&struct_)
-	if struct_.field1 != "hello" {
-		fmt.Println(iter.Error)
-		t.Fatal(struct_.field1)
-	}
-	if struct_.field2 != "world" {
-		fmt.Println(iter.Error)
-		t.Fatal(struct_.field1)
-	}
-}
-
-type StructOfStringPtr struct {
-	field1 *string
-	field2 *string
-}
-
-func Test_reflect_struct_string_ptr(t *testing.T) {
-	iter := ParseString(`{"field1": null, "field2": "world"}`)
-	struct_ := StructOfStringPtr{}
-	iter.Read(&struct_)
-	if struct_.field1 != nil {
-		fmt.Println(iter.Error)
-		t.Fatal(struct_.field1)
-	}
-	if *struct_.field2 != "world" {
-		fmt.Println(iter.Error)
-		t.Fatal(struct_.field2)
-	}
-}
-
-type StructOfTag struct {
-	field1 string `json:"field-1"`
-	field2 string `json:"-"`
-	field3 int `json:",string"`
-}
-
-func Test_reflect_struct_tag_field(t *testing.T) {
-	iter := ParseString(`{"field-1": "hello", "field2": "", "field3": "100"}`)
-	struct_ := StructOfTag{field2: "world"}
-	iter.Read(&struct_)
-	if struct_.field1 != "hello" {
-		fmt.Println(iter.Error)
-		t.Fatal(struct_.field1)
-	}
-	if struct_.field2 != "world" {
-		fmt.Println(iter.Error)
-		t.Fatal(struct_.field2)
-	}
-	if struct_.field3 != 100 {
-		fmt.Println(iter.Error)
-		t.Fatal(struct_.field3)
-	}
-}
-
-func Test_reflect_slice(t *testing.T) {
-	iter := ParseString(`["hello", "world"]`)
-	slice := make([]string, 0, 5)
-	iter.Read(&slice)
-	if len(slice) != 2 {
-		fmt.Println(iter.Error)
-		t.Fatal(len(slice))
-	}
-	if slice[0] != "hello" {
-		fmt.Println(iter.Error)
-		t.Fatal(slice[0])
-	}
-	if slice[1] != "world" {
-		fmt.Println(iter.Error)
-		t.Fatal(slice[1])
-	}
-}
-
-func Test_reflect_large_slice(t *testing.T) {
-	iter := ParseString(`[1,2,3,4,5,6,7,8,9]`)
-	slice := make([]int, 0, 1)
-	iter.Read(&slice)
-	if len(slice) != 9 {
-		fmt.Println(iter.Error)
-		t.Fatal(len(slice))
-	}
-	if slice[0] != 1 {
-		fmt.Println(iter.Error)
-		t.Fatal(slice[0])
-	}
-	if slice[8] != 9 {
-		fmt.Println(iter.Error)
-		t.Fatal(slice[1])
-	}
-}
-
-func Test_reflect_nested(t *testing.T) {
-	iter := ParseString(`[{"field1": "hello"}, null, {"field2": "world"}]`)
-	slice := []*StructOfString{}
-	iter.Read(&slice)
-	if len(slice) != 3 {
-		fmt.Println(iter.Error)
-		t.Fatal(len(slice))
-	}
-	if slice[0].field1 != "hello" {
-		fmt.Println(iter.Error)
-		t.Fatal(slice[0])
-	}
-	if slice[1] != nil {
-		fmt.Println(iter.Error)
-		t.Fatal(slice[1])
-	}
-	if slice[2].field2 != "world" {
-		fmt.Println(iter.Error)
-		t.Fatal(slice[1])
-	}
-}
-
-func Test_reflect_base64(t *testing.T) {
-	iter := ParseString(`"YWJj"`)
-	val := []byte{}
-	RegisterTypeDecoder("[]uint8", func(ptr unsafe.Pointer, iter *Iterator) {
-		*((*[]byte)(ptr)) = iter.ReadBase64()
-	})
-	defer ClearDecoders()
-	iter.Read(&val)
-	if "abc" != string(val) {
-		t.Fatal(string(val))
-	}
-}
-
-type StructOfTagOne struct {
-	field1 string `json:"field1"`
-	field2 string `json:"field2"`
-	field3 int `json:"field3,string"`
-	field4 int `json:"field4,string"`
-}
-
-func Benchmark_jsoniter_reflect(b *testing.B) {
-	b.ReportAllocs()
-	for n := 0; n < b.N; n++ {
-		iter := ParseString(`{"field3": "100"}`)
-		struct_ := StructOfTagOne{}
-		iter.Read(&struct_)
-		//iter := ParseString(`[1,2,3]`)
-		//var array []int
-		//iter.Read(&array)
-	}
-}
-
-func Benchmark_jsoniter_direct(b *testing.B) {
-	b.ReportAllocs()
-	for n := 0; n < b.N; n++ {
-		//iter := ParseString(`{"field1": "hello", "field2": "world"}`)
-		//struct_ := StructOfString{}
-		//for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
-		//	switch field {
-		//	case "field1":
-		//		struct_.field1 = iter.ReadString()
-		//	case "field2":
-		//		struct_.field2 = iter.ReadString()
-		//	default:
-		//		iter.Skip()
-		//	}
-		//}
-		iter := ParseString(`["hello", "world"]`)
-		array := make([]string, 0, 2)
-		for iter.ReadArray() {
-			array = append(array, iter.ReadString())
-		}
-	}
-}
-
-func Benchmark_json_reflect(b *testing.B) {
-	b.ReportAllocs()
-	for n := 0; n < b.N; n++ {
-		struct_ := StructOfTagOne{}
-		json.Unmarshal([]byte(`{"field3": "100"}`), &struct_)
-		//array := make([]string, 0, 2)
-		//json.Unmarshal([]byte(`["hello", "world"]`), &array)
-	}
-}

jsoniter_skip_test.go

@@ -1,81 +1,109 @@
 package jsoniter
 
 import (
-	"testing"
+	"bytes"
 	"encoding/json"
+	"testing"
+
+	"github.com/stretchr/testify/require"
 )
 
-
-func Test_skip_number(t *testing.T) {
-	iter := ParseString(`[-0.12, "b"]`)
+func Test_skip_number_in_array(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `[-0.12, "stream"]`)
 	iter.ReadArray()
 	iter.Skip()
 	iter.ReadArray()
-	if iter.ReadString() != "b" {
-		t.FailNow()
-	}
+	should.Nil(iter.Error)
+	should.Equal("stream", iter.ReadString())
+}
+
+func Test_skip_string_in_array(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `["hello", "stream"]`)
+	iter.ReadArray()
+	iter.Skip()
+	iter.ReadArray()
+	should.Nil(iter.Error)
+	should.Equal("stream", iter.ReadString())
 }
 
 func Test_skip_null(t *testing.T) {
-	iter := ParseString(`[null , "b"]`)
+	iter := ParseString(ConfigDefault, `[null , "stream"]`)
 	iter.ReadArray()
 	iter.Skip()
 	iter.ReadArray()
-	if iter.ReadString() != "b" {
+	if iter.ReadString() != "stream" {
 		t.FailNow()
 	}
 }
 
 func Test_skip_true(t *testing.T) {
-	iter := ParseString(`[true , "b"]`)
+	iter := ParseString(ConfigDefault, `[true , "stream"]`)
 	iter.ReadArray()
 	iter.Skip()
 	iter.ReadArray()
-	if iter.ReadString() != "b" {
+	if iter.ReadString() != "stream" {
 		t.FailNow()
 	}
 }
 
 func Test_skip_false(t *testing.T) {
-	iter := ParseString(`[false , "b"]`)
+	iter := ParseString(ConfigDefault, `[false , "stream"]`)
 	iter.ReadArray()
 	iter.Skip()
 	iter.ReadArray()
-	if iter.ReadString() != "b" {
+	if iter.ReadString() != "stream" {
 		t.FailNow()
 	}
 }
 
 func Test_skip_array(t *testing.T) {
-	iter := ParseString(`[[1, [2, [3], 4]], "b"]`)
+	iter := ParseString(ConfigDefault, `[[1, [2, [3], 4]], "stream"]`)
 	iter.ReadArray()
 	iter.Skip()
 	iter.ReadArray()
-	if iter.ReadString() != "b" {
+	if iter.ReadString() != "stream" {
 		t.FailNow()
 	}
 }
 
 func Test_skip_empty_array(t *testing.T) {
-	iter := ParseString(`[ [ ], "b"]`)
+	iter := ParseString(ConfigDefault, `[ [ ], "stream"]`)
 	iter.ReadArray()
 	iter.Skip()
 	iter.ReadArray()
-	if iter.ReadString() != "b" {
+	if iter.ReadString() != "stream" {
 		t.FailNow()
 	}
 }
 
 func Test_skip_nested(t *testing.T) {
-	iter := ParseString(`[ {"a" : [{"b": "c"}], "d": 102 }, "b"]`)
+	iter := ParseString(ConfigDefault, `[ {"a" : [{"stream": "c"}], "d": 102 }, "stream"]`)
 	iter.ReadArray()
 	iter.Skip()
 	iter.ReadArray()
-	if iter.ReadString() != "b" {
+	if iter.ReadString() != "stream" {
 		t.FailNow()
 	}
 }
 
+func Test_skip_and_return_bytes(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `[ {"a" : [{"stream": "c"}], "d": 102 }, "stream"]`)
+	iter.ReadArray()
+	skipped := iter.SkipAndReturnBytes()
+	should.Equal(`{"a" : [{"stream": "c"}], "d": 102 }`, string(skipped))
+}
+
+func Test_skip_and_return_bytes_with_reader(t *testing.T) {
+	should := require.New(t)
+	iter := Parse(ConfigDefault, bytes.NewBufferString(`[ {"a" : [{"stream": "c"}], "d": 102 }, "stream"]`), 4)
+	iter.ReadArray()
+	skipped := iter.SkipAndReturnBytes()
+	should.Equal(`{"a" : [{"stream": "c"}], "d": 102 }`, string(skipped))
+}
+
 type TestResp struct {
 	Code uint64
 }
@@ -107,7 +135,7 @@ func Benchmark_jsoniter_skip(b *testing.B) {
 }`)
 	for n := 0; n < b.N; n++ {
 		result := TestResp{}
-		iter := ParseBytes(input)
+		iter := ParseBytes(ConfigDefault, input)
 		for field := iter.ReadObject(); field != ""; field = iter.ReadObject() {
 			switch field {
 			case "code":
@@ -148,4 +176,4 @@ func Benchmark_json_skip(b *testing.B) {
 		result := TestResp{}
 		json.Unmarshal(input, &result)
 	}
-}
+}

jsoniter_sloppy_test.go

@@ -1,61 +1,64 @@
+//+build jsoniter-sloppy
+
 package jsoniter
 
 import (
-	"testing"
+	"github.com/stretchr/testify/require"
 	"io"
+	"testing"
 )
 
 func Test_string_end(t *testing.T) {
-	end, escaped := ParseString(`abc"`).findStringEnd()
+	end, escaped := ParseString(ConfigDefault, `abc"`).findStringEnd()
 	if end != 4 {
 		t.Fatal(end)
 	}
 	if escaped != false {
 		t.Fatal(escaped)
 	}
-	end, escaped = ParseString(`abc\\"`).findStringEnd()
+	end, escaped = ParseString(ConfigDefault, `abc\\"`).findStringEnd()
 	if end != 6 {
 		t.Fatal(end)
 	}
 	if escaped != true {
 		t.Fatal(escaped)
 	}
-	end, escaped = ParseString(`abc\\\\"`).findStringEnd()
+	end, escaped = ParseString(ConfigDefault, `abc\\\\"`).findStringEnd()
 	if end != 8 {
 		t.Fatal(end)
 	}
 	if escaped != true {
 		t.Fatal(escaped)
 	}
-	end, escaped = ParseString(`abc\"`).findStringEnd()
+	end, escaped = ParseString(ConfigDefault, `abc\"`).findStringEnd()
 	if end != -1 {
 		t.Fatal(end)
 	}
 	if escaped != false {
 		t.Fatal(escaped)
 	}
-	end, escaped = ParseString(`abc\`).findStringEnd()
+	end, escaped = ParseString(ConfigDefault, `abc\`).findStringEnd()
 	if end != -1 {
 		t.Fatal(end)
 	}
 	if escaped != true {
 		t.Fatal(escaped)
 	}
-	end, escaped = ParseString(`abc\\`).findStringEnd()
+	end, escaped = ParseString(ConfigDefault, `abc\\`).findStringEnd()
 	if end != -1 {
 		t.Fatal(end)
 	}
 	if escaped != false {
 		t.Fatal(escaped)
 	}
-	end, escaped = ParseString(`\\`).findStringEnd()
+	end, escaped = ParseString(ConfigDefault, `\\`).findStringEnd()
 	if end != -1 {
 		t.Fatal(end)
 	}
 	if escaped != false {
 		t.Fatal(escaped)
 	}
-	end, escaped = ParseString(`\`).findStringEnd()
+	end, escaped = ParseString(ConfigDefault, `\`).findStringEnd()
 	if end != -1 {
 		t.Fatal(end)
 	}
@@ -89,66 +92,55 @@ func (reader *StagedReader) Read(p []byte) (n int, err error) {
 }
 
 func Test_skip_string(t *testing.T) {
-	iter := ParseString(`"abc`)
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `"abc`)
 	iter.skipString()
-	if iter.head != 1 {
-		t.Fatal(iter.head)
-	}
-	iter = ParseString(`\""abc`)
+	should.Equal(1, iter.head)
+	iter = ParseString(ConfigDefault, `\""abc`)
 	iter.skipString()
-	if iter.head != 3 {
-		t.Fatal(iter.head)
-	}
+	should.Equal(3, iter.head)
 	reader := &StagedReader{
 		r1: `abc`,
 		r2: `"`,
 	}
-	iter = Parse(reader, 4096)
+	iter = Parse(ConfigDefault, reader, 4096)
 	iter.skipString()
-	if iter.head != 1 {
-		t.Fatal(iter.head)
-	}
+	should.Equal(1, iter.head)
 	reader = &StagedReader{
 		r1: `abc`,
 		r2: `1"`,
 	}
-	iter = Parse(reader, 4096)
+	iter = Parse(ConfigDefault, reader, 4096)
 	iter.skipString()
-	if iter.head != 2 {
-		t.Fatal(iter.head)
-	}
+	should.Equal(2, iter.head)
 	reader = &StagedReader{
 		r1: `abc\`,
 		r2: `"`,
 	}
-	iter = Parse(reader, 4096)
+	iter = Parse(ConfigDefault, reader, 4096)
 	iter.skipString()
-	if iter.Error != io.EOF {
-		t.Fatal(iter.Error)
-	}
+	should.NotNil(iter.Error)
 	reader = &StagedReader{
 		r1: `abc\`,
 		r2: `""`,
 	}
-	iter = Parse(reader, 4096)
+	iter = Parse(ConfigDefault, reader, 4096)
 	iter.skipString()
-	if iter.head != 2 {
-		t.Fatal(iter.head)
-	}
+	should.Equal(2, iter.head)
 }
 
 func Test_skip_object(t *testing.T) {
-	iter := ParseString(`}`)
+	iter := ParseString(ConfigDefault, `}`)
 	iter.skipObject()
 	if iter.head != 1 {
 		t.Fatal(iter.head)
 	}
-	iter = ParseString(`a}`)
+	iter = ParseString(ConfigDefault, `a}`)
 	iter.skipObject()
 	if iter.head != 2 {
 		t.Fatal(iter.head)
 	}
-	iter = ParseString(`{}}a`)
+	iter = ParseString(ConfigDefault, `{}}a`)
 	iter.skipObject()
 	if iter.head != 3 {
 		t.Fatal(iter.head)
@@ -157,12 +149,12 @@ func Test_skip_object(t *testing.T) {
 		r1: `{`,
 		r2: `}}a`,
 	}
-	iter = Parse(reader, 4096)
+	iter = Parse(ConfigDefault, reader, 4096)
 	iter.skipObject()
 	if iter.head != 2 {
 		t.Fatal(iter.head)
 	}
-	iter = ParseString(`"}"}a`)
+	iter = ParseString(ConfigDefault, `"}"}a`)
 	iter.skipObject()
 	if iter.head != 4 {
 		t.Fatal(iter.head)

jsoniter_stream_test.go

@@ -0,0 +1,53 @@
+package jsoniter
+
+import (
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func Test_writeByte_should_grow_buffer(t *testing.T) {
+	should := require.New(t)
+	stream := NewStream(ConfigDefault, nil, 1)
+	stream.writeByte('1')
+	should.Equal("1", string(stream.Buffer()))
+	should.Equal(1, len(stream.buf))
+	stream.writeByte('2')
+	should.Equal("12", string(stream.Buffer()))
+	should.Equal(2, len(stream.buf))
+	stream.writeThreeBytes('3', '4', '5')
+	should.Equal("12345", string(stream.Buffer()))
+}
+
+func Test_writeBytes_should_grow_buffer(t *testing.T) {
+	should := require.New(t)
+	stream := NewStream(ConfigDefault, nil, 1)
+	stream.Write([]byte{'1', '2'})
+	should.Equal("12", string(stream.Buffer()))
+	should.Equal(3, len(stream.buf))
+	stream.Write([]byte{'3', '4', '5', '6', '7'})
+	should.Equal("1234567", string(stream.Buffer()))
+	should.Equal(8, len(stream.buf))
+}
+
+func Test_writeIndention_should_grow_buffer(t *testing.T) {
+	should := require.New(t)
+	stream := NewStream(Config{IndentionStep: 2}.Froze(), nil, 1)
+	stream.WriteVal([]int{1, 2, 3})
+	should.Equal("[\n  1,\n  2,\n  3\n]", string(stream.Buffer()))
+}
+
+func Test_writeRaw_should_grow_buffer(t *testing.T) {
+	should := require.New(t)
+	stream := NewStream(ConfigDefault, nil, 1)
+	stream.WriteRaw("123")
+	should.Nil(stream.Error)
+	should.Equal("123", string(stream.Buffer()))
+}
+
+func Test_writeString_should_grow_buffer(t *testing.T) {
+	should := require.New(t)
+	stream := NewStream(ConfigDefault, nil, 0)
+	stream.WriteString("123")
+	should.Nil(stream.Error)
+	should.Equal(`"123"`, string(stream.Buffer()))
+}

jsoniter_string_test.go

@@ -1,111 +1,248 @@
+// +build go1.8
+
 package jsoniter
 
 import (
-	"testing"
 	"bytes"
 	"encoding/json"
+	"fmt"
+	"testing"
+	"unicode/utf8"
+
+	"github.com/stretchr/testify/require"
 )
 
-func Test_string_empty(t *testing.T) {
-	iter := Parse(bytes.NewBufferString(`""`), 4096)
-	val := iter.ReadString()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
+func Test_read_string(t *testing.T) {
+	badInputs := []string{
+		``,
+		`"`,
+		`"\"`,
+		`"\\\"`,
+		"\"\n\"",
+		`"\U0001f64f"`,
+		`"\uD83D\u00"`,
 	}
-	if val != "" {
-		t.Fatal(val)
+	for i := 0; i < 32; i++ {
+		// control characters are invalid
+		badInputs = append(badInputs, string([]byte{'"', byte(i), '"'}))
+	}
+
+	for _, input := range badInputs {
+		testReadString(t, input, "", true, "json.Unmarshal", json.Unmarshal)
+		testReadString(t, input, "", true, "jsoniter.Unmarshal", Unmarshal)
+		testReadString(t, input, "", true, "jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal", ConfigCompatibleWithStandardLibrary.Unmarshal)
+	}
+
+	goodInputs := []struct {
+		input       string
+		expectValue string
+	}{
+		{`""`, ""},
+		{`"a"`, "a"},
+		{`null`, ""},
+		{`"Iñtërnâtiônàlizætiøn,💝🐹🌇⛔"`, "Iñtërnâtiônàlizætiøn,💝🐹🌇⛔"},
+		{`"\uD83D"`, string([]byte{239, 191, 189})},
+		{`"\uD83D\\"`, string([]byte{239, 191, 189, '\\'})},
+		{`"\uD83D\ub000"`, string([]byte{239, 191, 189, 235, 128, 128})},
+		{`"\uD83D\ude04"`, "😄"},
+		{`"\uDEADBEEF"`, string([]byte{239, 191, 189, 66, 69, 69, 70})},
+	}
+
+	for _, tc := range goodInputs {
+		testReadString(t, tc.input, tc.expectValue, false, "json.Unmarshal", json.Unmarshal)
+		testReadString(t, tc.input, tc.expectValue, false, "jsoniter.Unmarshal", Unmarshal)
+		testReadString(t, tc.input, tc.expectValue, false, "jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal", ConfigCompatibleWithStandardLibrary.Unmarshal)
 	}
 }
 
-func Test_string_hello(t *testing.T) {
-	iter := Parse(bytes.NewBufferString(`"hello"`), 4096)
-	val := iter.ReadString()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
+func testReadString(t *testing.T, input string, expectValue string, expectError bool, marshalerName string, marshaler func([]byte, interface{}) error) {
+	var value string
+	err := marshaler([]byte(input), &value)
+	if expectError != (err != nil) {
+		t.Errorf("%q: %s: expected error %v, got %v", input, marshalerName, expectError, err)
+		return
 	}
-	if val != "hello" {
-		t.Fatal(val)
+	if value != expectValue {
+		t.Errorf("%q: %s: expected %q, got %q", input, marshalerName, expectValue, value)
+		return
 	}
 }
 
-func Test_string_escape_quote(t *testing.T) {
-	iter := Parse(bytes.NewBufferString(`"hel\"lo"`), 4096)
-	val := iter.ReadString()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
+func Test_read_normal_string(t *testing.T) {
+	cases := map[string]string{
+		`"0123456789012345678901234567890123456789"`: `0123456789012345678901234567890123456789`,
+		`""`:      ``,
+		`"hello"`: `hello`,
 	}
-	if val != `hel"lo` {
-		t.Fatal(val)
+	for input, output := range cases {
+		t.Run(fmt.Sprintf("%v:%v", input, output), func(t *testing.T) {
+			should := require.New(t)
+			iter := ParseString(ConfigDefault, input)
+			should.Equal(output, iter.ReadString())
+		})
+		t.Run(fmt.Sprintf("%v:%v", input, output), func(t *testing.T) {
+			should := require.New(t)
+			iter := Parse(ConfigDefault, bytes.NewBufferString(input), 2)
+			should.Equal(output, iter.ReadString())
+		})
+		t.Run(fmt.Sprintf("%v:%v", input, output), func(t *testing.T) {
+			should := require.New(t)
+			iter := ParseString(ConfigDefault, input)
+			should.Equal(output, string(iter.ReadStringAsSlice()))
+		})
+		t.Run(fmt.Sprintf("%v:%v", input, output), func(t *testing.T) {
+			should := require.New(t)
+			iter := Parse(ConfigDefault, bytes.NewBufferString(input), 2)
+			should.Equal(output, string(iter.ReadStringAsSlice()))
+		})
 	}
 }
 
-func Test_string_escape_newline(t *testing.T) {
-	iter := Parse(bytes.NewBufferString(`"hel\nlo"`), 4096)
-	val := iter.ReadString()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
+func Test_read_exotic_string(t *testing.T) {
+	cases := map[string]string{
+		`"hel\"lo"`:      `hel"lo`,
+		`"hel\\\/lo"`:    `hel\/lo`,
+		`"hel\\blo"`:     `hel\blo`,
+		`"hel\\\blo"`:    "hel\\\blo",
+		`"hel\\nlo"`:     `hel\nlo`,
+		`"hel\\\nlo"`:    "hel\\\nlo",
+		`"hel\\tlo"`:     `hel\tlo`,
+		`"hel\\flo"`:     `hel\flo`,
+		`"hel\\\flo"`:    "hel\\\flo",
+		`"hel\\\rlo"`:    "hel\\\rlo",
+		`"hel\\\tlo"`:    "hel\\\tlo",
+		`"\u4e2d\u6587"`: "中文",
+		`"\ud83d\udc4a"`: "\xf0\x9f\x91\x8a", // surrogate
 	}
-	if val != "hel\nlo" {
-		t.Fatal(val)
+	for input, output := range cases {
+		t.Run(fmt.Sprintf("%v:%v", input, output), func(t *testing.T) {
+			should := require.New(t)
+			iter := ParseString(ConfigDefault, input)
+			var v string
+			should.Nil(json.Unmarshal([]byte(input), &v))
+			should.Equal(v, iter.ReadString())
+		})
+		t.Run(fmt.Sprintf("%v:%v", input, output), func(t *testing.T) {
+			should := require.New(t)
+			iter := Parse(ConfigDefault, bytes.NewBufferString(input), 2)
+			should.Equal(output, iter.ReadString())
+		})
 	}
 }
 
-func Test_string_escape_unicode(t *testing.T) {
-	iter := Parse(bytes.NewBufferString(`"\u4e2d\u6587"`), 4096)
-	val := iter.ReadString()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
-	}
-	if val != "中文" {
-		t.Fatal(val)
+func Test_read_string_as_interface(t *testing.T) {
+	should := require.New(t)
+	iter := ParseString(ConfigDefault, `"hello"`)
+	should.Equal("hello", iter.Read())
+}
+
+func Test_write_string(t *testing.T) {
+	should := require.New(t)
+	str, err := MarshalToString("hello")
+	should.Equal(`"hello"`, str)
+	should.Nil(err)
+	str, err = MarshalToString(`hel"lo`)
+	should.Equal(`"hel\"lo"`, str)
+	should.Nil(err)
+}
+
+func Test_write_val_string(t *testing.T) {
+	should := require.New(t)
+	buf := &bytes.Buffer{}
+	stream := NewStream(ConfigDefault, buf, 4096)
+	stream.WriteVal("hello")
+	stream.Flush()
+	should.Nil(stream.Error)
+	should.Equal(`"hello"`, buf.String())
+}
+
+func Test_decode_slash(t *testing.T) {
+	should := require.New(t)
+	var obj interface{}
+	should.NotNil(json.Unmarshal([]byte("\\"), &obj))
+	should.NotNil(UnmarshalFromString("\\", &obj))
+}
+
+func Test_html_escape(t *testing.T) {
+	should := require.New(t)
+	output, err := json.Marshal(`>`)
+	should.Nil(err)
+	should.Equal(`"\u003e"`, string(output))
+	output, err = ConfigCompatibleWithStandardLibrary.Marshal(`>`)
+	should.Nil(err)
+	should.Equal(`"\u003e"`, string(output))
+	type MyString string
+	output, err = ConfigCompatibleWithStandardLibrary.Marshal(MyString(`>`))
+	should.Nil(err)
+	should.Equal(`"\u003e"`, string(output))
+}
+
+func Test_string_encode_with_std(t *testing.T) {
+	should := require.New(t)
+	for i := 0; i < utf8.RuneSelf; i++ {
+		input := string([]byte{byte(i)})
+		stdOutputBytes, err := json.Marshal(input)
+		should.Nil(err)
+		stdOutput := string(stdOutputBytes)
+		jsoniterOutputBytes, err := ConfigCompatibleWithStandardLibrary.Marshal(input)
+		should.Nil(err)
+		jsoniterOutput := string(jsoniterOutputBytes)
+		should.Equal(stdOutput, jsoniterOutput)
 	}
 }
 
-func Test_string_escape_unicode_with_surrogate(t *testing.T) {
-	iter := Parse(bytes.NewBufferString(`"\ud83d\udc4a"`), 4096)
-	val := iter.ReadString()
-	if iter.Error != nil {
-		t.Fatal(iter.Error)
-	}
-	if val != "\xf0\x9f\x91\x8a" {
-		t.Fatal(val)
-	}
+func Test_unicode(t *testing.T) {
+	should := require.New(t)
+	output, _ := MarshalToString(map[string]interface{}{"a": "数字山谷"})
+	should.Equal(`{"a":"数字山谷"}`, output)
+	output, _ = Config{EscapeHTML: false}.Froze().MarshalToString(map[string]interface{}{"a": "数字山谷"})
+	should.Equal(`{"a":"数字山谷"}`, output)
 }
 
-func Test_string_as_bytes(t *testing.T) {
-	iter := Parse(bytes.NewBufferString(`"hello""world"`), 4096)
-	val := string(iter.readStringAsBytes())
-	if val != "hello" {
-		t.Fatal(val)
-	}
-	val = string(iter.readStringAsBytes())
-	if val != "world" {
-		t.Fatal(val)
-	}
+func Test_unicode_and_escape(t *testing.T) {
+	should := require.New(t)
+	output, err := MarshalToString(`"数字山谷"`)
+	should.Nil(err)
+	should.Equal(`"\"数字山谷\""`, output)
+	output, err = ConfigFastest.MarshalToString(`"数字山谷"`)
+	should.Nil(err)
+	should.Equal(`"\"数字山谷\""`, output)
+}
+
+func Test_unsafe_unicode(t *testing.T) {
+	ConfigDefault.(*frozenConfig).cleanEncoders()
+	should := require.New(t)
+	output, err := ConfigDefault.MarshalToString("he\u2029\u2028he")
+	should.Nil(err)
+	should.Equal(`"he\u2029\u2028he"`, output)
+	output, err = ConfigFastest.MarshalToString("he\u2029\u2028he")
+	should.Nil(err)
+	should.Equal("\"he\u2029\u2028he\"", output)
 }
 
 func Benchmark_jsoniter_unicode(b *testing.B) {
 	for n := 0; n < b.N; n++ {
-		iter := ParseString(`"\ud83d\udc4a"`)
+		iter := ParseString(ConfigDefault, `"\ud83d\udc4a"`)
 		iter.ReadString()
 	}
 }
 
 func Benchmark_jsoniter_ascii(b *testing.B) {
-	iter := ParseString(`"hello, world!"`)
+	iter := NewIterator(ConfigDefault)
+	input := []byte(`"hello, world! hello, world!"`)
 	b.ResetTimer()
 	for n := 0; n < b.N; n++ {
-		iter.ResetBytes(iter.buf)
+		iter.ResetBytes(input)
 		iter.ReadString()
 	}
 }
 
 func Benchmark_jsoniter_string_as_bytes(b *testing.B) {
-	iter := ParseString(`"hello, world!"`)
+	iter := ParseString(ConfigDefault, `"hello, world!"`)
 	b.ResetTimer()
 	for n := 0; n < b.N; n++ {
 		iter.ResetBytes(iter.buf)
-		iter.readStringAsBytes()
+		iter.ReadStringAsSlice()
 	}
 }
 
@@ -121,4 +258,4 @@ func Benchmark_json_ascii(b *testing.B) {
 		result := ""
 		json.Unmarshal([]byte(`"hello"`), &result)
 	}
-}
+}

jsoniter_struct_decoder_test.go

@@ -0,0 +1,267 @@
+package jsoniter
+
+import (
+	"github.com/stretchr/testify/require"
+	"testing"
+)
+
+func Test_decode_one_field_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"field1": "hello"}`, &obj))
+	should.Equal("hello", obj.Field1)
+}
+
+func Test_decode_two_fields_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+		Field2 string
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"Field1": "a", "Field2": "stream"}`, &obj))
+	should.Equal("a", obj.Field1)
+	should.Equal("stream", obj.Field2)
+}
+
+func Test_decode_three_fields_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+		Field2 string
+		Field3 string
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"Field1": "a", "Field2": "stream", "Field3": "c"}`, &obj))
+	should.Equal("a", obj.Field1)
+	should.Equal("stream", obj.Field2)
+	should.Equal("c", obj.Field3)
+}
+
+func Test_decode_four_fields_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+		Field2 string
+		Field3 string
+		Field4 string
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"Field1": "a", "Field2": "stream", "Field3": "c", "Field4": "d"}`, &obj))
+	should.Equal("a", obj.Field1)
+	should.Equal("stream", obj.Field2)
+	should.Equal("c", obj.Field3)
+	should.Equal("d", obj.Field4)
+}
+
+func Test_decode_five_fields_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+		Field2 string
+		Field3 string
+		Field4 string
+		Field5 string
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"Field1": "a", "Field2": "stream", "Field3": "c", "Field4": "d", "Field5": "e"}`, &obj))
+	should.Equal("a", obj.Field1)
+	should.Equal("stream", obj.Field2)
+	should.Equal("c", obj.Field3)
+	should.Equal("d", obj.Field4)
+	should.Equal("e", obj.Field5)
+}
+
+func Test_decode_six_fields_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+		Field2 string
+		Field3 string
+		Field4 string
+		Field5 string
+		Field6 string
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"Field1": "a", "Field2": "stream", "Field3": "c", "Field4": "d", "Field5": "e", "Field6": "x"}`, &obj))
+	should.Equal("a", obj.Field1)
+	should.Equal("stream", obj.Field2)
+	should.Equal("c", obj.Field3)
+	should.Equal("d", obj.Field4)
+	should.Equal("e", obj.Field5)
+	should.Equal("x", obj.Field6)
+}
+
+func Test_decode_seven_fields_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+		Field2 string
+		Field3 string
+		Field4 string
+		Field5 string
+		Field6 string
+		Field7 string
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"Field1": "a", "Field2": "stream", "Field3": "c", "Field4": "d", "Field5": "e", "Field6": "x", "Field7":"y"}`, &obj))
+	should.Equal("a", obj.Field1)
+	should.Equal("stream", obj.Field2)
+	should.Equal("c", obj.Field3)
+	should.Equal("d", obj.Field4)
+	should.Equal("e", obj.Field5)
+	should.Equal("x", obj.Field6)
+	should.Equal("y", obj.Field7)
+}
+
+func Test_decode_eight_fields_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+		Field2 string
+		Field3 string
+		Field4 string
+		Field5 string
+		Field6 string
+		Field7 string
+		Field8 string
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"Field8":"1", "Field1": "a", "Field2": "stream", "Field3": "c", "Field4": "d", "Field5": "e", "Field6": "x", "Field7":"y"}`, &obj))
+	should.Equal("a", obj.Field1)
+	should.Equal("stream", obj.Field2)
+	should.Equal("c", obj.Field3)
+	should.Equal("d", obj.Field4)
+	should.Equal("e", obj.Field5)
+	should.Equal("x", obj.Field6)
+	should.Equal("y", obj.Field7)
+	should.Equal("1", obj.Field8)
+}
+
+func Test_decode_nine_fields_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string
+		Field2 string
+		Field3 string
+		Field4 string
+		Field5 string
+		Field6 string
+		Field7 string
+		Field8 string
+		Field9 string
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"Field8" : "zzzzzzzzzzz", "Field7": "zz", "Field6" : "xx", "Field1": "a", "Field2": "stream", "Field3": "c", "Field4": "d", "Field5": "e", "Field9":"f"}`, &obj))
+	should.Equal("a", obj.Field1)
+	should.Equal("stream", obj.Field2)
+	should.Equal("c", obj.Field3)
+	should.Equal("d", obj.Field4)
+	should.Equal("e", obj.Field5)
+	should.Equal("xx", obj.Field6)
+	should.Equal("zz", obj.Field7)
+	should.Equal("zzzzzzzzzzz", obj.Field8)
+	should.Equal("f", obj.Field9)
+}
+
+func Test_decode_ten_fields_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1  string
+		Field2  string
+		Field3  string
+		Field4  string
+		Field5  string
+		Field6  string
+		Field7  string
+		Field8  string
+		Field9  string
+		Field10 string
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"Field10":"x", "Field9": "x", "Field8":"x", "Field7":"x", "Field6":"x", "Field1": "a", "Field2": "stream", "Field3": "c", "Field4": "d", "Field5": "e"}`, &obj))
+	should.Equal("a", obj.Field1)
+	should.Equal("stream", obj.Field2)
+	should.Equal("c", obj.Field3)
+	should.Equal("d", obj.Field4)
+	should.Equal("e", obj.Field5)
+	should.Equal("x", obj.Field6)
+	should.Equal("x", obj.Field7)
+	should.Equal("x", obj.Field8)
+	should.Equal("x", obj.Field9)
+	should.Equal("x", obj.Field10)
+}
+
+func Test_decode_more_than_ten_fields_struct(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1  string
+		Field2  string
+		Field3  string
+		Field4  string
+		Field5  string
+		Field6  string
+		Field7  string
+		Field8  string
+		Field9  string
+		Field10 string
+		Field11 int
+	}
+	obj := TestObject{}
+	should.Nil(UnmarshalFromString(`{}`, &obj))
+	should.Equal("", obj.Field1)
+	should.Nil(UnmarshalFromString(`{"field11":1, "field1": "a", "Field2": "stream", "Field3": "c", "Field4": "d", "Field5": "e"}`, &obj))
+	should.Equal("a", obj.Field1)
+	should.Equal("stream", obj.Field2)
+	should.Equal("c", obj.Field3)
+	should.Equal("d", obj.Field4)
+	should.Equal("e", obj.Field5)
+	should.Equal(1, obj.Field11)
+}
+
+func Test_decode_struct_field_with_tag(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 string `json:"field-1"`
+		Field2 string `json:"-"`
+		Field3 int    `json:",string"`
+	}
+	obj := TestObject{Field2: "world"}
+	UnmarshalFromString(`{"field-1": "hello", "field2": "", "Field3": "100"}`, &obj)
+	should.Equal("hello", obj.Field1)
+	should.Equal("world", obj.Field2)
+	should.Equal(100, obj.Field3)
+}
+
+func Test_decode_struct_field_with_tag_string(t *testing.T) {
+	should := require.New(t)
+	type TestObject struct {
+		Field1 int `json:",string"`
+	}
+	obj := TestObject{Field1: 100}
+	should.Nil(UnmarshalFromString(`{"Field1": "100"}`, &obj))
+	should.Equal(100, obj.Field1)
+}

jsoniter_wrap_test.go

@@ -0,0 +1,118 @@
+package jsoniter
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_wrap_and_valuetype_everything(t *testing.T) {
+	should := require.New(t)
+	var i interface{}
+	any := Get([]byte("123"))
+	// default of number type is float64
+	i = float64(123)
+	should.Equal(i, any.GetInterface())
+
+	any = Wrap(int8(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	//  get interface is not int8 interface
+	// i = int8(10)
+	// should.Equal(i, any.GetInterface())
+
+	any = Wrap(int16(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	//i = int16(10)
+	//should.Equal(i, any.GetInterface())
+
+	any = Wrap(int32(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	i = int32(10)
+	should.Equal(i, any.GetInterface())
+	any = Wrap(int64(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	i = int64(10)
+	should.Equal(i, any.GetInterface())
+
+	any = Wrap(uint(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	// not equal
+	//i = uint(10)
+	//should.Equal(i, any.GetInterface())
+	any = Wrap(uint8(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	// not equal
+	// i = uint8(10)
+	// should.Equal(i, any.GetInterface())
+	any = Wrap(uint16(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	any = Wrap(uint32(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	i = uint32(10)
+	should.Equal(i, any.GetInterface())
+	any = Wrap(uint64(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	i = uint64(10)
+	should.Equal(i, any.GetInterface())
+
+	any = Wrap(float32(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	// not equal
+	//i = float32(10)
+	//should.Equal(i, any.GetInterface())
+	any = Wrap(float64(10))
+	should.Equal(any.ValueType(), NumberValue)
+	should.Equal(any.LastError(), nil)
+	i = float64(10)
+	should.Equal(i, any.GetInterface())
+
+	any = Wrap(true)
+	should.Equal(any.ValueType(), BoolValue)
+	should.Equal(any.LastError(), nil)
+	i = true
+	should.Equal(i, any.GetInterface())
+	any = Wrap(false)
+	should.Equal(any.ValueType(), BoolValue)
+	should.Equal(any.LastError(), nil)
+	i = false
+	should.Equal(i, any.GetInterface())
+
+	any = Wrap(nil)
+	should.Equal(any.ValueType(), NilValue)
+	should.Equal(any.LastError(), nil)
+	i = nil
+	should.Equal(i, any.GetInterface())
+
+	stream := NewStream(ConfigDefault, nil, 32)
+	any.WriteTo(stream)
+	should.Equal("null", string(stream.Buffer()))
+	should.Equal(any.LastError(), nil)
+
+	any = Wrap(struct{ age int }{age: 1})
+	should.Equal(any.ValueType(), ObjectValue)
+	should.Equal(any.LastError(), nil)
+	i = struct{ age int }{age: 1}
+	should.Equal(i, any.GetInterface())
+
+	any = Wrap(map[string]interface{}{"abc": 1})
+	should.Equal(any.ValueType(), ObjectValue)
+	should.Equal(any.LastError(), nil)
+	i = map[string]interface{}{"abc": 1}
+	should.Equal(i, any.GetInterface())
+
+	any = Wrap("abc")
+	i = "abc"
+	should.Equal(i, any.GetInterface())
+	should.Equal(nil, any.LastError())
+
+}

output_tests/array/array/bool/json_test.go

@@ -0,0 +1,152 @@
+package test
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"strings"
+	"testing"
+
+	"github.com/davecgh/go-spew/spew"
+	fuzz "github.com/google/gofuzz"
+	jsoniter "github.com/json-iterator/go"
+)
+
+func Test_Roundtrip(t *testing.T) {
+	fz := fuzz.New().MaxDepth(10).NilChance(0.3)
+	for i := 0; i < 100; i++ {
+		var before typeForTest
+		fz.Fuzz(&before)
+
+		jbStd, err := json.Marshal(before)
+		if err != nil {
+			t.Fatalf("failed to marshal with stdlib: %v", err)
+		}
+		if len(strings.TrimSpace(string(jbStd))) == 0 {
+			t.Fatal("stdlib marshal produced empty result and no error")
+		}
+		jbIter, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(before)
+		if err != nil {
+			t.Fatalf("failed to marshal with jsoniter: %v", err)
+		}
+		if len(strings.TrimSpace(string(jbIter))) == 0 {
+			t.Fatal("jsoniter marshal produced empty result and no error")
+		}
+		if string(jbStd) != string(jbIter) {
+			t.Fatalf("marshal expected:\n    %s\ngot:\n    %s\nobj:\n    %s",
+				indent(jbStd, "    "), indent(jbIter, "    "), dump(before))
+		}
+
+		var afterStd typeForTest
+		err = json.Unmarshal(jbIter, &afterStd)
+		if err != nil {
+			t.Fatalf("failed to unmarshal with stdlib: %v\nvia:\n    %s",
+				err, indent(jbIter, "    "))
+		}
+		var afterIter typeForTest
+		err = jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal(jbIter, &afterIter)
+		if err != nil {
+			t.Fatalf("failed to unmarshal with jsoniter: %v\nvia:\n    %s",
+				err, indent(jbIter, "    "))
+		}
+		if fingerprint(afterStd) != fingerprint(afterIter) {
+			t.Fatalf("unmarshal expected:\n    %s\ngot:\n    %s\nvia:\n    %s",
+				dump(afterStd), dump(afterIter), indent(jbIter, "    "))
+		}
+	}
+}
+
+const indentStr = ">  "
+
+func fingerprint(obj interface{}) string {
+	c := spew.ConfigState{
+		SortKeys: true,
+		SpewKeys: true,
+	}
+	return c.Sprintf("%v", obj)
+}
+
+func dump(obj interface{}) string {
+	cfg := spew.ConfigState{
+		Indent: indentStr,
+	}
+	return cfg.Sdump(obj)
+}
+
+func indent(src []byte, prefix string) string {
+	var buf bytes.Buffer
+	err := json.Indent(&buf, src, prefix, indentStr)
+	if err != nil {
+		return fmt.Sprintf("!!! %v", err)
+	}
+	return buf.String()
+}
+
+func benchmarkMarshal(t *testing.B, name string, fn func(interface{}) ([]byte, error)) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var obj typeForTest
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&obj)
+	for i := 0; i < t.N; i++ {
+		jb, err := fn(obj)
+		if err != nil {
+			t.Fatalf("%s failed to marshal:\n input: %s\n  error: %v", name, dump(obj), err)
+		}
+		_ = jb
+	}
+}
+
+func benchmarkUnmarshal(t *testing.B, name string, fn func(data []byte, v interface{}) error) {
+	t.ReportAllocs()
+	t.ResetTimer()
+
+	var before typeForTest
+	fz := fuzz.NewWithSeed(0).MaxDepth(10).NilChance(0.3)
+	fz.Fuzz(&before)
+	jb, err := json.Marshal(before)
+	if err != nil {
+		t.Fatalf("failed to marshal: %v", err)
+	}
+
+	for i := 0; i < t.N; i++ {
+		var after typeForTest
+		err = fn(jb, &after)
+		if err != nil {
+			t.Fatalf("%s failed to unmarshal:\n  input: %q\n  error: %v", name, string(jb), err)
+		}
+	}
+}
+
+func BenchmarkStandardMarshal(t *testing.B) {
+	benchmarkMarshal(t, "stdlib", json.Marshal)
+}
+
+func BenchmarkStandardUnmarshal(t *testing.B) {
+	benchmarkUnmarshal(t, "stdlib", json.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalFastest(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalFastest(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-fastest", jsoniter.ConfigFastest.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalDefault(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-default", jsoniter.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalDefault(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-default", jsoniter.Unmarshal)
+}
+
+func BenchmarkJSONIterMarshalCompatible(t *testing.B) {
+	benchmarkMarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Marshal)
+}
+
+func BenchmarkJSONIterUnmarshalCompatible(t *testing.B) {
+	benchmarkUnmarshal(t, "jsoniter-compat", jsoniter.ConfigCompatibleWithStandardLibrary.Unmarshal)
+}

output_tests/array/array/bool/types.go

@@ -0,0 +1,3 @@
+package test
+
+type typeForTest [4][4]bool