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mirror of https://github.com/json-iterator/go.git synced 2024-11-27 08:30:57 +02:00
json-iterator/feature_any_object.go
2017-06-06 23:27:00 +08:00

849 lines
16 KiB
Go

package jsoniter
import (
"fmt"
"reflect"
"unsafe"
)
type objectLazyAny struct {
baseAny
buf []byte
iter *Iterator
err error
cache map[string]Any
remaining []byte
}
func (any *objectLazyAny) ValueType() ValueType {
return Object
}
func (any *objectLazyAny) Parse() *Iterator {
iter := any.iter
if iter == nil {
iter = NewIterator()
any.iter = iter
}
iter.ResetBytes(any.remaining)
return iter
}
func (any *objectLazyAny) fillCacheUntil(target string) Any {
if any.remaining == nil {
return any.cache[target]
}
if any.cache == nil {
any.cache = map[string]Any{}
}
val := any.cache[target]
if val != nil {
return val
}
iter := any.Parse()
if len(any.remaining) == len(any.buf) {
iter.head++
c := iter.nextToken()
if c != '}' {
iter.unreadByte()
k := string(iter.readObjectFieldAsBytes())
v := iter.readAny(iter)
any.cache[k] = v
if target == k {
any.remaining = iter.buf[iter.head:]
any.err = iter.Error
return v
}
} else {
any.remaining = nil
any.err = iter.Error
return nil
}
}
for iter.nextToken() == ',' {
k := string(iter.readObjectFieldAsBytes())
v := iter.readAny(iter)
any.cache[k] = v
if target == k {
any.remaining = iter.buf[iter.head:]
any.err = iter.Error
return v
}
}
any.remaining = nil
any.err = iter.Error
return nil
}
func (any *objectLazyAny) fillCache() {
if any.remaining == nil {
return
}
if any.cache == nil {
any.cache = map[string]Any{}
}
iter := any.Parse()
if len(any.remaining) == len(any.buf) {
iter.head++
c := iter.nextToken()
if c != '}' {
iter.unreadByte()
k := string(iter.readObjectFieldAsBytes())
v := iter.readAny(iter)
any.cache[k] = v
} else {
any.remaining = nil
any.err = iter.Error
return
}
}
for iter.nextToken() == ',' {
k := string(iter.readObjectFieldAsBytes())
v := iter.readAny(iter)
any.cache[k] = v
}
any.remaining = nil
any.err = iter.Error
return
}
func (any *objectLazyAny) LastError() error {
return any.err
}
func (any *objectLazyAny) ToBool() bool {
if any.cache == nil {
any.IterateObject() // trigger first value read
}
return len(any.cache) != 0
}
func (any *objectLazyAny) ToInt() int {
if any.cache == nil {
any.IterateObject() // trigger first value read
}
if len(any.cache) == 0 {
return 0
}
return 1
}
func (any *objectLazyAny) ToInt32() int32 {
if any.cache == nil {
any.IterateObject() // trigger first value read
}
if len(any.cache) == 0 {
return 0
}
return 1
}
func (any *objectLazyAny) ToInt64() int64 {
if any.cache == nil {
any.IterateObject() // trigger first value read
}
if len(any.cache) == 0 {
return 0
}
return 1
}
func (any *objectLazyAny) ToUint() uint {
if any.cache == nil {
any.IterateObject() // trigger first value read
}
if len(any.cache) == 0 {
return 0
}
return 1
}
func (any *objectLazyAny) ToUint32() uint32 {
if any.cache == nil {
any.IterateObject() // trigger first value read
}
if len(any.cache) == 0 {
return 0
}
return 1
}
func (any *objectLazyAny) ToUint64() uint64 {
if any.cache == nil {
any.IterateObject() // trigger first value read
}
if len(any.cache) == 0 {
return 0
}
return 1
}
func (any *objectLazyAny) ToFloat32() float32 {
if any.cache == nil {
any.IterateObject() // trigger first value read
}
if len(any.cache) == 0 {
return 0
}
return 1
}
func (any *objectLazyAny) ToFloat64() float64 {
if any.cache == nil {
any.IterateObject() // trigger first value read
}
if len(any.cache) == 0 {
return 0
}
return 1
}
func (any *objectLazyAny) ToString() string {
if len(any.remaining) == len(any.buf) {
// nothing has been parsed yet
return *(*string)(unsafe.Pointer(&any.buf))
} else {
any.fillCache()
str, err := MarshalToString(any.cache)
any.err = err
return str
}
}
func (any *objectLazyAny) Get(path ...interface{}) Any {
if len(path) == 0 {
return any
}
var element Any
switch firstPath := path[0].(type) {
case string:
element = any.fillCacheUntil(firstPath)
if element == nil {
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", firstPath, any.cache)}
}
case int32:
if '*' == firstPath {
any.fillCache()
mappedAll := map[string]Any{}
for key, value := range any.cache {
mapped := value.Get(path[1:]...)
if mapped.ValueType() != Invalid {
mappedAll[key] = mapped
}
}
return wrapMap(mappedAll)
} else {
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", firstPath, any.cache)}
}
default:
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", firstPath, any.cache)}
}
if len(path) == 1 {
return element
} else {
return element.Get(path[1:]...)
}
}
func (any *objectLazyAny) Keys() []string {
any.fillCache()
keys := make([]string, 0, len(any.cache))
for key := range any.cache {
keys = append(keys, key)
}
return keys
}
func (any *objectLazyAny) Size() int {
any.fillCache()
return len(any.cache)
}
func (any *objectLazyAny) IterateObject() (func() (string, Any, bool), bool) {
if any.cache == nil {
any.cache = map[string]Any{}
}
remaining := any.remaining
if len(remaining) == len(any.buf) {
iter := any.Parse()
iter.head++
c := iter.nextToken()
if c != '}' {
iter.unreadByte()
k := string(iter.readObjectFieldAsBytes())
v := iter.readAny(iter)
any.cache[k] = v
remaining = iter.buf[iter.head:]
any.remaining = remaining
} else {
remaining = nil
any.remaining = nil
any.err = iter.Error
return nil, false
}
}
if len(any.cache) == 0 {
return nil, false
}
keys := make([]string, 0, len(any.cache))
values := make([]Any, 0, len(any.cache))
for key, value := range any.cache {
keys = append(keys, key)
values = append(values, value)
}
nextKey := keys[0]
nextValue := values[0]
i := 1
return func() (string, Any, bool) {
key := nextKey
value := nextValue
if i < len(keys) {
// read from cache
nextKey = keys[i]
nextValue = values[i]
i++
return key, value, true
} else {
// read from buffer
iter := any.iter
if iter == nil {
iter = NewIterator()
any.iter = iter
}
iter.ResetBytes(remaining)
c := iter.nextToken()
if c == ',' {
nextKey = string(iter.readObjectFieldAsBytes())
nextValue = iter.readAny(iter)
any.cache[nextKey] = nextValue
remaining = iter.buf[iter.head:]
any.remaining = remaining
any.err = iter.Error
return key, value, true
} else {
nextKey = ""
remaining = nil
any.remaining = nil
any.err = iter.Error
return key, value, false
}
}
}, true
}
func (any *objectLazyAny) GetObject() map[string]Any {
any.fillCache()
return any.cache
}
func (any *objectLazyAny) SetObject(val map[string]Any) bool {
any.fillCache()
any.cache = val
return true
}
func (any *objectLazyAny) WriteTo(stream *Stream) {
if len(any.remaining) == len(any.buf) {
// nothing has been parsed yet
stream.Write(any.buf)
} else {
any.fillCache()
stream.WriteVal(any.cache)
}
}
func (any *objectLazyAny) GetInterface() interface{} {
any.fillCache()
return any.cache
}
type objectAny struct {
baseAny
err error
cache map[string]Any
val reflect.Value
}
func wrapStruct(val interface{}) *objectAny {
return &objectAny{baseAny{}, nil, nil, reflect.ValueOf(val)}
}
func (any *objectAny) ValueType() ValueType {
return Object
}
func (any *objectAny) Parse() *Iterator {
return nil
}
func (any *objectAny) fillCacheUntil(target string) Any {
if any.cache == nil {
any.cache = map[string]Any{}
}
element, found := any.cache[target]
if found {
return element
}
for i := len(any.cache); i < any.val.NumField(); i++ {
field := any.val.Field(i)
fieldName := any.val.Type().Field(i).Name
var element Any
if field.CanInterface() {
element = Wrap(field.Interface())
} else {
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", fieldName, any.cache)}
}
any.cache[fieldName] = element
if fieldName == target {
return element
}
}
return nil
}
func (any *objectAny) fillCache() {
if any.cache == nil {
any.cache = map[string]Any{}
}
if len(any.cache) == any.val.NumField() {
return
}
for i := 0; i < any.val.NumField(); i++ {
field := any.val.Field(i)
fieldName := any.val.Type().Field(i).Name
var element Any
if field.CanInterface() {
element = Wrap(field.Interface())
} else {
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", fieldName, any.cache)}
}
any.cache[fieldName] = element
}
}
func (any *objectAny) LastError() error {
return any.err
}
func (any *objectAny) ToBool() bool {
return any.val.NumField() != 0
}
func (any *objectAny) ToInt() int {
if any.val.NumField() == 0 {
return 0
}
return 1
}
func (any *objectAny) ToInt32() int32 {
if any.val.NumField() == 0 {
return 0
}
return 1
}
func (any *objectAny) ToInt64() int64 {
if any.val.NumField() == 0 {
return 0
}
return 1
}
func (any *objectAny) ToUint() uint {
if any.val.NumField() == 0 {
return 0
}
return 1
}
func (any *objectAny) ToUint32() uint32 {
if any.val.NumField() == 0 {
return 0
}
return 1
}
func (any *objectAny) ToUint64() uint64 {
if any.val.NumField() == 0 {
return 0
}
return 1
}
func (any *objectAny) ToFloat32() float32 {
if any.val.NumField() == 0 {
return 0
}
return 1
}
func (any *objectAny) ToFloat64() float64 {
if any.val.NumField() == 0 {
return 0
}
return 1
}
func (any *objectAny) ToString() string {
if len(any.cache) == 0 {
str, err := MarshalToString(any.val.Interface())
any.err = err
return str
} else {
any.fillCache()
str, err := MarshalToString(any.cache)
any.err = err
return str
}
}
func (any *objectAny) Get(path ...interface{}) Any {
if len(path) == 0 {
return any
}
var element Any
switch firstPath := path[0].(type) {
case string:
element = any.fillCacheUntil(firstPath)
if element == nil {
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", firstPath, any.cache)}
}
case int32:
if '*' == firstPath {
any.fillCache()
mappedAll := map[string]Any{}
for key, value := range any.cache {
mapped := value.Get(path[1:]...)
if mapped.ValueType() != Invalid {
mappedAll[key] = mapped
}
}
return wrapMap(mappedAll)
} else {
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", firstPath, any.cache)}
}
default:
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", firstPath, any.cache)}
}
if len(path) == 1 {
return element
} else {
return element.Get(path[1:]...)
}
}
func (any *objectAny) Keys() []string {
any.fillCache()
keys := make([]string, 0, len(any.cache))
for key := range any.cache {
keys = append(keys, key)
}
return keys
}
func (any *objectAny) Size() int {
any.fillCache()
return len(any.cache)
}
func (any *objectAny) IterateObject() (func() (string, Any, bool), bool) {
if any.cache == nil {
any.cache = map[string]Any{}
}
if any.val.NumField() == 0 {
return nil, false
}
cacheKeys := make([]string, len(any.cache))
i := 0
for key := range any.cache {
cacheKeys[i] = key
i++
}
i = 0
return func() (string, Any, bool) {
if i == any.val.NumField() {
return "", nil, false
}
var fieldName string
var fieldValueAsAny Any
if i == len(cacheKeys) {
fieldName = any.val.Type().Field(i).Name
cacheKeys = append(cacheKeys, fieldName)
fieldValue := any.val.Field(i)
if fieldValue.CanInterface() {
fieldValueAsAny = Wrap(fieldValue.Interface())
any.cache[fieldName] = fieldValueAsAny
} else {
fieldValueAsAny = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", fieldName, any.cache)}
any.cache[fieldName] = fieldValueAsAny
}
} else {
fieldName = cacheKeys[i]
fieldValueAsAny = any.cache[fieldName]
}
i++
return fieldName, fieldValueAsAny, i != any.val.NumField()
}, true
}
func (any *objectAny) GetObject() map[string]Any {
any.fillCache()
return any.cache
}
func (any *objectAny) SetObject(val map[string]Any) bool {
any.fillCache()
any.cache = val
return true
}
func (any *objectAny) WriteTo(stream *Stream) {
if len(any.cache) == 0 {
// nothing has been parsed yet
stream.WriteVal(any.val)
} else {
any.fillCache()
stream.WriteVal(any.cache)
}
}
func (any *objectAny) GetInterface() interface{} {
any.fillCache()
return any.cache
}
type mapAny struct {
baseAny
err error
cache map[string]Any
val reflect.Value
}
func wrapMap(val interface{}) *mapAny {
return &mapAny{baseAny{}, nil, nil, reflect.ValueOf(val)}
}
func (any *mapAny) ValueType() ValueType {
return Object
}
func (any *mapAny) Parse() *Iterator {
return nil
}
func (any *mapAny) fillCacheUntil(target string) Any {
if any.cache == nil {
any.cache = map[string]Any{}
}
element, found := any.cache[target]
if found {
return element
}
for _, key := range any.val.MapKeys() {
keyAsStr := key.String()
_, found := any.cache[keyAsStr]
if found {
continue
}
element := Wrap(any.val.MapIndex(key).Interface())
any.cache[keyAsStr] = element
if keyAsStr == target {
return element
}
}
return nil
}
func (any *mapAny) fillCache() {
if any.cache == nil {
any.cache = map[string]Any{}
}
if len(any.cache) == any.val.Len() {
return
}
for _, key := range any.val.MapKeys() {
keyAsStr := key.String()
element := Wrap(any.val.MapIndex(key).Interface())
any.cache[keyAsStr] = element
}
}
func (any *mapAny) LastError() error {
return any.err
}
func (any *mapAny) ToBool() bool {
return any.val.Len() != 0
}
func (any *mapAny) ToInt() int {
if any.val.Len() == 0 {
return 0
}
return 1
}
func (any *mapAny) ToInt32() int32 {
if any.val.Len() == 0 {
return 0
}
return 1
}
func (any *mapAny) ToInt64() int64 {
if any.val.Len() == 0 {
return 0
}
return 1
}
func (any *mapAny) ToUint() uint {
if any.val.Len() == 0 {
return 0
}
return 1
}
func (any *mapAny) ToUint32() uint32 {
if any.val.Len() == 0 {
return 0
}
return 1
}
func (any *mapAny) ToUint64() uint64 {
if any.val.Len() == 0 {
return 0
}
return 1
}
func (any *mapAny) ToFloat32() float32 {
if any.val.Len() == 0 {
return 0
}
return 1
}
func (any *mapAny) ToFloat64() float64 {
if any.val.Len() == 0 {
return 0
}
return 1
}
func (any *mapAny) ToString() string {
if len(any.cache) == 0 {
str, err := MarshalToString(any.val.Interface())
any.err = err
return str
} else {
any.fillCache()
str, err := MarshalToString(any.cache)
any.err = err
return str
}
}
func (any *mapAny) Get(path ...interface{}) Any {
if len(path) == 0 {
return any
}
var element Any
switch firstPath := path[0].(type) {
case string:
element = any.fillCacheUntil(firstPath)
if element == nil {
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", firstPath, any.cache)}
}
case int32:
if '*' == firstPath {
any.fillCache()
mappedAll := map[string]Any{}
for key, value := range any.cache {
mapped := value.Get(path[1:]...)
if mapped.ValueType() != Invalid {
mappedAll[key] = mapped
}
}
return wrapMap(mappedAll)
} else {
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", firstPath, any.cache)}
}
default:
element = &invalidAny{baseAny{}, fmt.Errorf("%v not found in %v", firstPath, any.cache)}
}
if len(path) == 1 {
return element
} else {
return element.Get(path[1:]...)
}
}
func (any *mapAny) Keys() []string {
any.fillCache()
keys := make([]string, 0, len(any.cache))
for key := range any.cache {
keys = append(keys, key)
}
return keys
}
func (any *mapAny) Size() int {
any.fillCache()
return len(any.cache)
}
func (any *mapAny) IterateObject() (func() (string, Any, bool), bool) {
any.fillCache()
if len(any.cache) == 0 {
return nil, false
}
keys := make([]string, len(any.cache))
values := make([]Any, len(any.cache))
i := 0
for k, v := range any.cache {
keys[i] = k
values[i] = v
i++
}
i = 0
return func() (string, Any, bool) {
if i == len(keys) {
return "", nil, false
}
k := keys[i]
v := values[i]
i++
return k, v, i != len(keys)
}, true
}
func (any *mapAny) GetObject() map[string]Any {
any.fillCache()
return any.cache
}
func (any *mapAny) SetObject(val map[string]Any) bool {
any.fillCache()
any.cache = val
return true
}
func (any *mapAny) WriteTo(stream *Stream) {
if len(any.cache) == 0 {
// nothing has been parsed yet
stream.WriteVal(any.val)
} else {
any.fillCache()
stream.WriteVal(any.cache)
}
}
func (any *mapAny) GetInterface() interface{} {
any.fillCache()
return any.cache
}