diff options
Diffstat (limited to 'vendor/github.com/json-iterator/go/reflect_slice.go')
-rw-r--r-- | vendor/github.com/json-iterator/go/reflect_slice.go | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/vendor/github.com/json-iterator/go/reflect_slice.go b/vendor/github.com/json-iterator/go/reflect_slice.go new file mode 100644 index 00000000..9441d79d --- /dev/null +++ b/vendor/github.com/json-iterator/go/reflect_slice.go @@ -0,0 +1,99 @@ +package jsoniter + +import ( + "fmt" + "github.com/modern-go/reflect2" + "io" + "unsafe" +) + +func decoderOfSlice(ctx *ctx, typ reflect2.Type) ValDecoder { + sliceType := typ.(*reflect2.UnsafeSliceType) + decoder := decoderOfType(ctx.append("[sliceElem]"), sliceType.Elem()) + return &sliceDecoder{sliceType, decoder} +} + +func encoderOfSlice(ctx *ctx, typ reflect2.Type) ValEncoder { + sliceType := typ.(*reflect2.UnsafeSliceType) + encoder := encoderOfType(ctx.append("[sliceElem]"), sliceType.Elem()) + return &sliceEncoder{sliceType, encoder} +} + +type sliceEncoder struct { + sliceType *reflect2.UnsafeSliceType + elemEncoder ValEncoder +} + +func (encoder *sliceEncoder) Encode(ptr unsafe.Pointer, stream *Stream) { + if encoder.sliceType.UnsafeIsNil(ptr) { + stream.WriteNil() + return + } + length := encoder.sliceType.UnsafeLengthOf(ptr) + if length == 0 { + stream.WriteEmptyArray() + return + } + stream.WriteArrayStart() + encoder.elemEncoder.Encode(encoder.sliceType.UnsafeGetIndex(ptr, 0), stream) + for i := 1; i < length; i++ { + stream.WriteMore() + elemPtr := encoder.sliceType.UnsafeGetIndex(ptr, i) + encoder.elemEncoder.Encode(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) IsEmpty(ptr unsafe.Pointer) bool { + return encoder.sliceType.UnsafeLengthOf(ptr) == 0 +} + +type sliceDecoder struct { + sliceType *reflect2.UnsafeSliceType + elemDecoder ValDecoder +} + +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) { + c := iter.nextToken() + sliceType := decoder.sliceType + if c == 'n' { + iter.skipThreeBytes('u', 'l', 'l') + sliceType.UnsafeSetNil(ptr) + return + } + if c != '[' { + iter.ReportError("decode slice", "expect [ or n, but found "+string([]byte{c})) + return + } + c = iter.nextToken() + if c == ']' { + sliceType.UnsafeSet(ptr, sliceType.UnsafeMakeSlice(0, 0)) + return + } + iter.unreadByte() + sliceType.UnsafeGrow(ptr, 1) + elemPtr := sliceType.UnsafeGetIndex(ptr, 0) + decoder.elemDecoder.Decode(elemPtr, iter) + length := 1 + for c = iter.nextToken(); c == ','; c = iter.nextToken() { + idx := length + length += 1 + sliceType.UnsafeGrow(ptr, length) + elemPtr = sliceType.UnsafeGetIndex(ptr, idx) + decoder.elemDecoder.Decode(elemPtr, iter) + } + if c != ']' { + iter.ReportError("decode slice", "expect ], but found "+string([]byte{c})) + return + } +} |