unsafe_array.go
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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")
}