gtsocial-umbx

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unsafe_eface.go (1301B)

      1 package reflect2
      2 
      3 import (
      4 	"reflect"
      5 	"unsafe"
      6 )
      7 
      8 type eface struct {
      9 	rtype unsafe.Pointer
     10 	data  unsafe.Pointer
     11 }
     12 
     13 func unpackEFace(obj interface{}) *eface {
     14 	return (*eface)(unsafe.Pointer(&obj))
     15 }
     16 
     17 func packEFace(rtype unsafe.Pointer, data unsafe.Pointer) interface{} {
     18 	var i interface{}
     19 	e := (*eface)(unsafe.Pointer(&i))
     20 	e.rtype = rtype
     21 	e.data = data
     22 	return i
     23 }
     24 
     25 type UnsafeEFaceType struct {
     26 	unsafeType
     27 }
     28 
     29 func newUnsafeEFaceType(cfg *frozenConfig, type1 reflect.Type) *UnsafeEFaceType {
     30 	return &UnsafeEFaceType{
     31 		unsafeType: *newUnsafeType(cfg, type1),
     32 	}
     33 }
     34 
     35 func (type2 *UnsafeEFaceType) IsNil(obj interface{}) bool {
     36 	if obj == nil {
     37 		return true
     38 	}
     39 	objEFace := unpackEFace(obj)
     40 	assertType("Type.IsNil argument 1", type2.ptrRType, objEFace.rtype)
     41 	return type2.UnsafeIsNil(objEFace.data)
     42 }
     43 
     44 func (type2 *UnsafeEFaceType) UnsafeIsNil(ptr unsafe.Pointer) bool {
     45 	if ptr == nil {
     46 		return true
     47 	}
     48 	return unpackEFace(*(*interface{})(ptr)).data == nil
     49 }
     50 
     51 func (type2 *UnsafeEFaceType) Indirect(obj interface{}) interface{} {
     52 	objEFace := unpackEFace(obj)
     53 	assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype)
     54 	return type2.UnsafeIndirect(objEFace.data)
     55 }
     56 
     57 func (type2 *UnsafeEFaceType) UnsafeIndirect(ptr unsafe.Pointer) interface{} {
     58 	return *(*interface{})(ptr)
     59 }