go-json/decode_ptr.go

25 lines
445 B
Go

package json
import (
"reflect"
"unsafe"
)
type ptrDecoder struct {
dec decoder
typ reflect.Type
}
func newPtrDecoder(dec decoder, typ reflect.Type) *ptrDecoder {
return &ptrDecoder{dec: dec, typ: typ}
}
func (d *ptrDecoder) decode(ctx *context, p uintptr) error {
newptr := uintptr(reflect.New(d.typ).Pointer())
if err := d.dec.decode(ctx, newptr); err != nil {
return err
}
*(*uintptr)(unsafe.Pointer(p)) = newptr
return nil
}