diff options
Diffstat (limited to 'vendor/github.com/modern-go/reflect2/unsafe_array.go')
-rw-r--r-- | vendor/github.com/modern-go/reflect2/unsafe_array.go | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/vendor/github.com/modern-go/reflect2/unsafe_array.go b/vendor/github.com/modern-go/reflect2/unsafe_array.go new file mode 100644 index 000000000..76cbdba6e --- /dev/null +++ b/vendor/github.com/modern-go/reflect2/unsafe_array.go @@ -0,0 +1,65 @@ +package reflect2 + +import ( + "reflect" + "unsafe" +) + +type UnsafeArrayType struct { + unsafeType + elemRType unsafe.Pointer + pElemRType unsafe.Pointer + elemSize uintptr + likePtr bool +} + +func newUnsafeArrayType(cfg *frozenConfig, type1 reflect.Type) *UnsafeArrayType { + return &UnsafeArrayType{ + unsafeType: *newUnsafeType(cfg, type1), + elemRType: unpackEFace(type1.Elem()).data, + pElemRType: unpackEFace(reflect.PtrTo(type1.Elem())).data, + elemSize: type1.Elem().Size(), + likePtr: likePtrType(type1), + } +} + +func (type2 *UnsafeArrayType) LikePtr() bool { + return type2.likePtr +} + +func (type2 *UnsafeArrayType) Indirect(obj interface{}) interface{} { + objEFace := unpackEFace(obj) + assertType("Type.Indirect argument 1", type2.ptrRType, objEFace.rtype) + return type2.UnsafeIndirect(objEFace.data) +} + +func (type2 *UnsafeArrayType) UnsafeIndirect(ptr unsafe.Pointer) interface{} { + if type2.likePtr { + return packEFace(type2.rtype, *(*unsafe.Pointer)(ptr)) + } + return packEFace(type2.rtype, ptr) +} + +func (type2 *UnsafeArrayType) SetIndex(obj interface{}, index int, elem interface{}) { + objEFace := unpackEFace(obj) + assertType("ArrayType.SetIndex argument 1", type2.ptrRType, objEFace.rtype) + elemEFace := unpackEFace(elem) + assertType("ArrayType.SetIndex argument 3", type2.pElemRType, elemEFace.rtype) + type2.UnsafeSetIndex(objEFace.data, index, elemEFace.data) +} + +func (type2 *UnsafeArrayType) UnsafeSetIndex(obj unsafe.Pointer, index int, elem unsafe.Pointer) { + elemPtr := arrayAt(obj, index, type2.elemSize, "i < s.Len") + typedmemmove(type2.elemRType, elemPtr, elem) +} + +func (type2 *UnsafeArrayType) GetIndex(obj interface{}, index int) interface{} { + objEFace := unpackEFace(obj) + assertType("ArrayType.GetIndex argument 1", type2.ptrRType, objEFace.rtype) + elemPtr := type2.UnsafeGetIndex(objEFace.data, index) + return packEFace(type2.pElemRType, elemPtr) +} + +func (type2 *UnsafeArrayType) UnsafeGetIndex(obj unsafe.Pointer, index int) unsafe.Pointer { + return arrayAt(obj, index, type2.elemSize, "i < s.Len") +} |