cmd/bpa-operator/vendor/github.com/modern-go/reflect2/unsafe_field.go

   1 package reflect2
   2
   3 import (
   4         "reflect"
   5         "unsafe"
   6 )
   7
   8 type UnsafeStructField struct {
   9         reflect.StructField
  10         structType *UnsafeStructType
  11         rtype      unsafe.Pointer
  12         ptrRType   unsafe.Pointer
  13 }
  14
  15 func newUnsafeStructField(structType *UnsafeStructType, structField reflect.StructField) *UnsafeStructField {
  16         return &UnsafeStructField{
  17                 StructField: structField,
  18                 rtype:       unpackEFace(structField.Type).data,
  19                 ptrRType:    unpackEFace(reflect.PtrTo(structField.Type)).data,
  20                 structType:  structType,
  21         }
  22 }
  23
  24 func (field *UnsafeStructField) Offset() uintptr {
  25         return field.StructField.Offset
  26 }
  27
  28 func (field *UnsafeStructField) Name() string {
  29         return field.StructField.Name
  30 }
  31
  32 func (field *UnsafeStructField) PkgPath() string {
  33         return field.StructField.PkgPath
  34 }
  35
  36 func (field *UnsafeStructField) Type() Type {
  37         return field.structType.cfg.Type2(field.StructField.Type)
  38 }
  39
  40 func (field *UnsafeStructField) Tag() reflect.StructTag {
  41         return field.StructField.Tag
  42 }
  43
  44 func (field *UnsafeStructField) Index() []int {
  45         return field.StructField.Index
  46 }
  47
  48 func (field *UnsafeStructField) Anonymous() bool {
  49         return field.StructField.Anonymous
  50 }
  51
  52 func (field *UnsafeStructField) Set(obj interface{}, value interface{}) {
  53         objEFace := unpackEFace(obj)
  54         assertType("StructField.SetIndex argument 1", field.structType.ptrRType, objEFace.rtype)
  55         valueEFace := unpackEFace(value)
  56         assertType("StructField.SetIndex argument 2", field.ptrRType, valueEFace.rtype)
  57         field.UnsafeSet(objEFace.data, valueEFace.data)
  58 }
  59
  60 func (field *UnsafeStructField) UnsafeSet(obj unsafe.Pointer, value unsafe.Pointer) {
  61         fieldPtr := add(obj, field.StructField.Offset, "same as non-reflect &v.field")
  62         typedmemmove(field.rtype, fieldPtr, value)
  63 }
  64
  65 func (field *UnsafeStructField) Get(obj interface{}) interface{} {
  66         objEFace := unpackEFace(obj)
  67         assertType("StructField.GetIndex argument 1", field.structType.ptrRType, objEFace.rtype)
  68         value := field.UnsafeGet(objEFace.data)
  69         return packEFace(field.ptrRType, value)
  70 }
  71
  72 func (field *UnsafeStructField) UnsafeGet(obj unsafe.Pointer) unsafe.Pointer {
  73         return add(obj, field.StructField.Offset, "same as non-reflect &v.field")
  74 }