gtsocial-umbx

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reflect_dynamic.go (1458B)

      1 package jsoniter
      2 
      3 import (
      4 	"github.com/modern-go/reflect2"
      5 	"reflect"
      6 	"unsafe"
      7 )
      8 
      9 type dynamicEncoder struct {
     10 	valType reflect2.Type
     11 }
     12 
     13 func (encoder *dynamicEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
     14 	obj := encoder.valType.UnsafeIndirect(ptr)
     15 	stream.WriteVal(obj)
     16 }
     17 
     18 func (encoder *dynamicEncoder) IsEmpty(ptr unsafe.Pointer) bool {
     19 	return encoder.valType.UnsafeIndirect(ptr) == nil
     20 }
     21 
     22 type efaceDecoder struct {
     23 }
     24 
     25 func (decoder *efaceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
     26 	pObj := (*interface{})(ptr)
     27 	obj := *pObj
     28 	if obj == nil {
     29 		*pObj = iter.Read()
     30 		return
     31 	}
     32 	typ := reflect2.TypeOf(obj)
     33 	if typ.Kind() != reflect.Ptr {
     34 		*pObj = iter.Read()
     35 		return
     36 	}
     37 	ptrType := typ.(*reflect2.UnsafePtrType)
     38 	ptrElemType := ptrType.Elem()
     39 	if iter.WhatIsNext() == NilValue {
     40 		if ptrElemType.Kind() != reflect.Ptr {
     41 			iter.skipFourBytes('n', 'u', 'l', 'l')
     42 			*pObj = nil
     43 			return
     44 		}
     45 	}
     46 	if reflect2.IsNil(obj) {
     47 		obj := ptrElemType.New()
     48 		iter.ReadVal(obj)
     49 		*pObj = obj
     50 		return
     51 	}
     52 	iter.ReadVal(obj)
     53 }
     54 
     55 type ifaceDecoder struct {
     56 	valType *reflect2.UnsafeIFaceType
     57 }
     58 
     59 func (decoder *ifaceDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
     60 	if iter.ReadNil() {
     61 		decoder.valType.UnsafeSet(ptr, decoder.valType.UnsafeNew())
     62 		return
     63 	}
     64 	obj := decoder.valType.UnsafeIndirect(ptr)
     65 	if reflect2.IsNil(obj) {
     66 		iter.ReportError("decode non empty interface", "can not unmarshal into nil")
     67 		return
     68 	}
     69 	iter.ReadVal(obj)
     70 }