Function constructSliceCodec

json/codec.go:284–337

(t reflect.Type, seen map[reflect.Type]*structType)

}

func constructSliceCodec(t reflect.Type, seen map[reflect.Type]*structType) codec {
	e := t.Elem()
	s := alignedSize(e)

	if e.Kind() == reflect.Uint8 {
		// Go 1.7+ behavior: slices of byte types (and aliases) may override the
		// default encoding and decoding behaviors by implementing marshaler and
		// unmarshaler interfaces.
		p := reflect.PointerTo(e)
		c := codec{}

		switch {
		case e.Implements(jsonMarshalerType):
			c.encode = constructJSONMarshalerEncodeFunc(e, false)
		case e.Implements(textMarshalerType):
			c.encode = constructTextMarshalerEncodeFunc(e, false)
		case p.Implements(jsonMarshalerType):
			c.encode = constructJSONMarshalerEncodeFunc(e, true)
		case p.Implements(textMarshalerType):
			c.encode = constructTextMarshalerEncodeFunc(e, true)
		}

		switch {
		case e.Implements(jsonUnmarshalerType):
			c.decode = constructJSONUnmarshalerDecodeFunc(e, false)
		case e.Implements(textUnmarshalerType):
			c.decode = constructTextUnmarshalerDecodeFunc(e, false)
		case p.Implements(jsonUnmarshalerType):
			c.decode = constructJSONUnmarshalerDecodeFunc(e, true)
		case p.Implements(textUnmarshalerType):
			c.decode = constructTextUnmarshalerDecodeFunc(e, true)
		}

		if c.encode != nil {
			c.encode = constructSliceEncodeFunc(s, t, c.encode)
		} else {
			c.encode = encoder.encodeBytes
		}

		if c.decode != nil {
			c.decode = constructSliceDecodeFunc(s, t, c.decode)
		} else {
			c.decode = decoder.decodeBytes
		}

		return c
	}

	c := constructCodec(e, seen, true)
	return codec{
		encode: constructSliceEncodeFunc(s, t, c.encode),
		decode: constructSliceDecodeFunc(s, t, c.decode),
	}
}

func constructSliceEncodeFunc(size uintptr, t reflect.Type, encode encodeFunc) encodeFunc {
	return func(e encoder, b []byte, p unsafe.Pointer) ([]byte, error) {