diff options
Diffstat (limited to 'vendor/github.com/json-iterator/go/reflect.go')
| -rw-r--r-- | vendor/github.com/json-iterator/go/reflect.go | 321 |
1 files changed, 0 insertions, 321 deletions
diff --git a/vendor/github.com/json-iterator/go/reflect.go b/vendor/github.com/json-iterator/go/reflect.go deleted file mode 100644 index 5c7d3a8a..00000000 --- a/vendor/github.com/json-iterator/go/reflect.go +++ /dev/null @@ -1,321 +0,0 @@ -package jsoniter - -import ( - "fmt" - "github.com/modern-go/reflect2" - "reflect" - "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) -} - -type checkIsEmpty interface { - IsEmpty(ptr unsafe.Pointer) bool -} - -type ctx struct { - *frozenConfig - prefix string - encoders map[reflect2.Type]ValEncoder - decoders map[reflect2.Type]ValDecoder -} - -func (b *ctx) append(prefix string) *ctx { - return &ctx{ - frozenConfig: b.frozenConfig, - prefix: b.prefix + " " + prefix, - encoders: b.encoders, - decoders: b.decoders, - } -} - -// ReadVal copy the underlying JSON into go interface, same as json.Unmarshal -func (iter *Iterator) ReadVal(obj interface{}) { - cacheKey := reflect2.RTypeOf(obj) - decoder := iter.cfg.getDecoderFromCache(cacheKey) - if decoder == nil { - typ := reflect2.TypeOf(obj) - if typ.Kind() != reflect.Ptr { - iter.ReportError("ReadVal", "can only unmarshal into pointer") - return - } - decoder = iter.cfg.DecoderOf(typ) - } - ptr := reflect2.PtrOf(obj) - if ptr == nil { - iter.ReportError("ReadVal", "can not read into nil pointer") - return - } - decoder.Decode(ptr, 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 - } - cacheKey := reflect2.RTypeOf(val) - encoder := stream.cfg.getEncoderFromCache(cacheKey) - if encoder == nil { - typ := reflect2.TypeOf(val) - encoder = stream.cfg.EncoderOf(typ) - } - encoder.Encode(reflect2.PtrOf(val), stream) -} - -func (cfg *frozenConfig) DecoderOf(typ reflect2.Type) ValDecoder { - cacheKey := typ.RType() - decoder := cfg.getDecoderFromCache(cacheKey) - if decoder != nil { - return decoder - } - ctx := &ctx{ - frozenConfig: cfg, - prefix: "", - decoders: map[reflect2.Type]ValDecoder{}, - encoders: map[reflect2.Type]ValEncoder{}, - } - ptrType := typ.(*reflect2.UnsafePtrType) - decoder = decoderOfType(ctx, ptrType.Elem()) - cfg.addDecoderToCache(cacheKey, decoder) - return decoder -} - -func decoderOfType(ctx *ctx, typ reflect2.Type) ValDecoder { - decoder := getTypeDecoderFromExtension(ctx, typ) - if decoder != nil { - return decoder - } - decoder = createDecoderOfType(ctx, typ) - for _, extension := range extensions { - decoder = extension.DecorateDecoder(typ, decoder) - } - for _, extension := range ctx.extensions { - decoder = extension.DecorateDecoder(typ, decoder) - } - return decoder -} - -func createDecoderOfType(ctx *ctx, typ reflect2.Type) ValDecoder { - decoder := ctx.decoders[typ] - if decoder != nil { - return decoder - } - placeholder := &placeholderDecoder{} - ctx.decoders[typ] = placeholder - decoder = _createDecoderOfType(ctx, typ) - placeholder.decoder = decoder - return decoder -} - -func _createDecoderOfType(ctx *ctx, typ reflect2.Type) ValDecoder { - decoder := createDecoderOfJsonRawMessage(ctx, typ) - if decoder != nil { - return decoder - } - decoder = createDecoderOfJsonNumber(ctx, typ) - if decoder != nil { - return decoder - } - decoder = createDecoderOfMarshaler(ctx, typ) - if decoder != nil { - return decoder - } - decoder = createDecoderOfAny(ctx, typ) - if decoder != nil { - return decoder - } - decoder = createDecoderOfNative(ctx, typ) - if decoder != nil { - return decoder - } - switch typ.Kind() { - case reflect.Interface: - ifaceType, isIFace := typ.(*reflect2.UnsafeIFaceType) - if isIFace { - return &ifaceDecoder{valType: ifaceType} - } - return &efaceDecoder{} - case reflect.Struct: - return decoderOfStruct(ctx, typ) - case reflect.Array: - return decoderOfArray(ctx, typ) - case reflect.Slice: - return decoderOfSlice(ctx, typ) - case reflect.Map: - return decoderOfMap(ctx, typ) - case reflect.Ptr: - return decoderOfOptional(ctx, typ) - default: - return &lazyErrorDecoder{err: fmt.Errorf("%s%s is unsupported type", ctx.prefix, typ.String())} - } -} - -func (cfg *frozenConfig) EncoderOf(typ reflect2.Type) ValEncoder { - cacheKey := typ.RType() - encoder := cfg.getEncoderFromCache(cacheKey) - if encoder != nil { - return encoder - } - ctx := &ctx{ - frozenConfig: cfg, - prefix: "", - decoders: map[reflect2.Type]ValDecoder{}, - encoders: map[reflect2.Type]ValEncoder{}, - } - encoder = encoderOfType(ctx, typ) - if typ.LikePtr() { - encoder = &onePtrEncoder{encoder} - } - cfg.addEncoderToCache(cacheKey, encoder) - return encoder -} - -type onePtrEncoder struct { - encoder ValEncoder -} - -func (encoder *onePtrEncoder) IsEmpty(ptr unsafe.Pointer) bool { - return encoder.encoder.IsEmpty(unsafe.Pointer(&ptr)) -} - -func (encoder *onePtrEncoder) Encode(ptr unsafe.Pointer, stream *Stream) { - encoder.encoder.Encode(unsafe.Pointer(&ptr), stream) -} - -func encoderOfType(ctx *ctx, typ reflect2.Type) ValEncoder { - encoder := getTypeEncoderFromExtension(ctx, typ) - if encoder != nil { - return encoder - } - encoder = createEncoderOfType(ctx, typ) - for _, extension := range extensions { - encoder = extension.DecorateEncoder(typ, encoder) - } - for _, extension := range ctx.extensions { - encoder = extension.DecorateEncoder(typ, encoder) - } - return encoder -} - -func createEncoderOfType(ctx *ctx, typ reflect2.Type) ValEncoder { - encoder := ctx.encoders[typ] - if encoder != nil { - return encoder - } - placeholder := &placeholderEncoder{} - ctx.encoders[typ] = placeholder - encoder = _createEncoderOfType(ctx, typ) - placeholder.encoder = encoder - return encoder -} -func _createEncoderOfType(ctx *ctx, typ reflect2.Type) ValEncoder { - encoder := createEncoderOfJsonRawMessage(ctx, typ) - if encoder != nil { - return encoder - } - encoder = createEncoderOfJsonNumber(ctx, typ) - if encoder != nil { - return encoder - } - encoder = createEncoderOfMarshaler(ctx, typ) - if encoder != nil { - return encoder - } - encoder = createEncoderOfAny(ctx, typ) - if encoder != nil { - return encoder - } - encoder = createEncoderOfNative(ctx, typ) - if encoder != nil { - return encoder - } - kind := typ.Kind() - switch kind { - case reflect.Interface: - return &dynamicEncoder{typ} - case reflect.Struct: - return encoderOfStruct(ctx, typ) - case reflect.Array: - return encoderOfArray(ctx, typ) - case reflect.Slice: - return encoderOfSlice(ctx, typ) - case reflect.Map: - return encoderOfMap(ctx, typ) - case reflect.Ptr: - return encoderOfOptional(ctx, typ) - default: - return &lazyErrorEncoder{err: fmt.Errorf("%s%s is unsupported type", ctx.prefix, typ.String())} - } -} - -type lazyErrorDecoder struct { - err error -} - -func (decoder *lazyErrorDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if iter.WhatIsNext() != NilValue { - if iter.Error == nil { - iter.Error = decoder.err - } - } else { - iter.Skip() - } -} - -type lazyErrorEncoder struct { - err error -} - -func (encoder *lazyErrorEncoder) Encode(ptr unsafe.Pointer, stream *Stream) { - if ptr == nil { - stream.WriteNil() - } else if stream.Error == nil { - stream.Error = encoder.err - } -} - -func (encoder *lazyErrorEncoder) IsEmpty(ptr unsafe.Pointer) bool { - return false -} - -type placeholderDecoder struct { - decoder ValDecoder -} - -func (decoder *placeholderDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - decoder.decoder.Decode(ptr, iter) -} - -type placeholderEncoder struct { - encoder ValEncoder -} - -func (encoder *placeholderEncoder) Encode(ptr unsafe.Pointer, stream *Stream) { - encoder.encoder.Encode(ptr, stream) -} - -func (encoder *placeholderEncoder) IsEmpty(ptr unsafe.Pointer) bool { - return encoder.encoder.IsEmpty(ptr) -} |