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Code Issues Releases Activity

#87 fix embedded field sorting order

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This commit is contained in:
Tao Wen 2017-06-30 14:01:50 +08:00
parent 401a56bc20
commit a3a2d1cd25
2 changed files with 56 additions and 27 deletions
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51
feature_reflect_extension.go
View File

@ -6,6 +6,7 @@ import (
"strings"
"unicode"
"unsafe"
"sort"
)
var typeDecoders = map[string]ValDecoder{}
@ -195,8 +196,7 @@ func _getTypeEncoderFromExtension(typ reflect.Type) ValEncoder {
}
func describeStruct(cfg *frozenConfig, typ reflect.Type) (*StructDescriptor, error) {
headAnonymousBindings := []*Binding{}
tailAnonymousBindings := []*Binding{}
embeddedBindings := []*Binding{}
bindings := []*Binding{}
for i := 0; i < typ.NumField(); i++ {
field := typ.Field(i)
@ -210,11 +210,7 @@ func describeStruct(cfg *frozenConfig, typ reflect.Type) (*StructDescriptor, err
binding.levels = append([]int{i}, binding.levels...)
binding.Encoder = &structFieldEncoder{&field, binding.Encoder, false}
binding.Decoder = &structFieldDecoder{&field, binding.Decoder}
if field.Offset == 0 {
headAnonymousBindings = append(headAnonymousBindings, binding)
} else {
tailAnonymousBindings = append(tailAnonymousBindings, binding)
}
embeddedBindings = append(embeddedBindings, binding)
}
continue
} else if field.Type.Kind() == reflect.Ptr && field.Type.Elem().Kind() == reflect.Struct {
@ -228,11 +224,7 @@ func describeStruct(cfg *frozenConfig, typ reflect.Type) (*StructDescriptor, err
binding.Encoder = &structFieldEncoder{&field, binding.Encoder, false}
binding.Decoder = &deferenceDecoder{field.Type.Elem(), binding.Decoder}
binding.Decoder = &structFieldDecoder{&field, binding.Decoder}
if field.Offset == 0 {
headAnonymousBindings = append(headAnonymousBindings, binding)
} else {
tailAnonymousBindings = append(tailAnonymousBindings, binding)
}
embeddedBindings = append(embeddedBindings, binding)
}
continue
}
@ -270,9 +262,9 @@ func describeStruct(cfg *frozenConfig, typ reflect.Type) (*StructDescriptor, err
binding.levels = []int{i}
bindings = append(bindings, binding)
}
return createStructDescriptor(cfg, typ, bindings, headAnonymousBindings, tailAnonymousBindings), nil
return createStructDescriptor(cfg, typ, bindings, embeddedBindings), nil
}
func createStructDescriptor(cfg *frozenConfig, typ reflect.Type, bindings []*Binding, headAnonymousBindings []*Binding, tailAnonymousBindings []*Binding) *StructDescriptor {
func createStructDescriptor(cfg *frozenConfig, typ reflect.Type, bindings []*Binding, embeddedBindings []*Binding) *StructDescriptor {
onePtrEmbedded := false
onePtrOptimization := false
if typ.NumField() == 1 {
@ -297,12 +289,37 @@ func createStructDescriptor(cfg *frozenConfig, typ reflect.Type, bindings []*Bin
extension.UpdateStructDescriptor(structDescriptor)
}
processTags(structDescriptor, cfg)
// insert anonymous bindings to the head
structDescriptor.Fields = append(headAnonymousBindings, structDescriptor.Fields...)
structDescriptor.Fields = append(structDescriptor.Fields, tailAnonymousBindings...)
// merge normal & embedded bindings & sort with original order
allBindings := sortableBindings(append(embeddedBindings, structDescriptor.Fields...))
sort.Sort(allBindings)
structDescriptor.Fields = allBindings
return structDescriptor
}
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

32
jsoniter_object_test.go
View File

@ -84,7 +84,7 @@ func Test_write_object(t *testing.T) {
stream.WriteObjectEnd()
stream.Flush()
should.Nil(stream.Error)
should.Equal("{\n \"hello\":1,\n \"world\":2\n}", buf.String())
should.Equal("{\n \"hello\": 1,\n \"world\": 2\n}", buf.String())
}
func Test_decode_one_field_struct(t *testing.T) {
@ -381,21 +381,33 @@ func Test_shadow_struct_field(t *testing.T) {
should.Contains(output, `"max_age":20`)
}
func Test_embed_at_last(t *testing.T) {
type Base struct {
Type string `json:"type"`
func Test_embeded_order(t *testing.T) {
type A struct {
Field2 string
}
type Struct struct {
Field string `json:"field"`
FieldType string `json:"field_type"`
Base
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 := Struct{Field: "field", FieldType: "field_type", Base: Base{"type"}}
s := TestObject{}
output, err := MarshalToString(s)
should.Nil(err)
should.Equal(`{"field":"field","field_type":"field_type","type":"type"}`, output)
should.Equal(`{"Field1":"","Field2":"","Field3":"","Field4":"","Field5":"","Field6":"","Field7":""}`, output)
}
func Test_decode_nested(t *testing.T) {