diff options
Diffstat (limited to 'vendor/github.com/modern-go/reflect2/safe_slice.go')
-rw-r--r-- | vendor/github.com/modern-go/reflect2/safe_slice.go | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/vendor/github.com/modern-go/reflect2/safe_slice.go b/vendor/github.com/modern-go/reflect2/safe_slice.go new file mode 100644 index 00000000..bcce6fd2 --- /dev/null +++ b/vendor/github.com/modern-go/reflect2/safe_slice.go @@ -0,0 +1,92 @@ +package reflect2 + +import ( + "reflect" + "unsafe" +) + +type safeSliceType struct { + safeType +} + +func (type2 *safeSliceType) SetIndex(obj interface{}, index int, value interface{}) { + val := reflect.ValueOf(obj).Elem() + elem := reflect.ValueOf(value).Elem() + val.Index(index).Set(elem) +} + +func (type2 *safeSliceType) UnsafeSetIndex(obj unsafe.Pointer, index int, value unsafe.Pointer) { + panic("does not support unsafe operation") +} + +func (type2 *safeSliceType) GetIndex(obj interface{}, index int) interface{} { + val := reflect.ValueOf(obj).Elem() + elem := val.Index(index) + ptr := reflect.New(elem.Type()) + ptr.Elem().Set(elem) + return ptr.Interface() +} + +func (type2 *safeSliceType) UnsafeGetIndex(obj unsafe.Pointer, index int) unsafe.Pointer { + panic("does not support unsafe operation") +} + +func (type2 *safeSliceType) MakeSlice(length int, cap int) interface{} { + val := reflect.MakeSlice(type2.Type, length, cap) + ptr := reflect.New(val.Type()) + ptr.Elem().Set(val) + return ptr.Interface() +} + +func (type2 *safeSliceType) UnsafeMakeSlice(length int, cap int) unsafe.Pointer { + panic("does not support unsafe operation") +} + +func (type2 *safeSliceType) Grow(obj interface{}, newLength int) { + oldCap := type2.Cap(obj) + oldSlice := reflect.ValueOf(obj).Elem() + delta := newLength - oldCap + deltaVals := make([]reflect.Value, delta) + newSlice := reflect.Append(oldSlice, deltaVals...) + oldSlice.Set(newSlice) +} + +func (type2 *safeSliceType) UnsafeGrow(ptr unsafe.Pointer, newLength int) { + panic("does not support unsafe operation") +} + +func (type2 *safeSliceType) Append(obj interface{}, elem interface{}) { + val := reflect.ValueOf(obj).Elem() + elemVal := reflect.ValueOf(elem).Elem() + newVal := reflect.Append(val, elemVal) + val.Set(newVal) +} + +func (type2 *safeSliceType) UnsafeAppend(obj unsafe.Pointer, elem unsafe.Pointer) { + panic("does not support unsafe operation") +} + +func (type2 *safeSliceType) SetNil(obj interface{}) { + val := reflect.ValueOf(obj).Elem() + val.Set(reflect.Zero(val.Type())) +} + +func (type2 *safeSliceType) UnsafeSetNil(ptr unsafe.Pointer) { + panic("does not support unsafe operation") +} + +func (type2 *safeSliceType) LengthOf(obj interface{}) int { + return reflect.ValueOf(obj).Elem().Len() +} + +func (type2 *safeSliceType) UnsafeLengthOf(ptr unsafe.Pointer) int { + panic("does not support unsafe operation") +} + +func (type2 *safeSliceType) Cap(obj interface{}) int { + return reflect.ValueOf(obj).Elem().Cap() +} + +func (type2 *safeSliceType) UnsafeCap(ptr unsafe.Pointer) int { + panic("does not support unsafe operation") +} |