forked from gitea/gitea
1
0
Fork 0
gitea/vendor/github.com/modern-go/reflect2/safe_map.go

102 lines
2.5 KiB
Go

package reflect2
import (
"reflect"
"unsafe"
)
type safeMapType struct {
safeType
}
func (type2 *safeMapType) Key() Type {
return type2.safeType.cfg.Type2(type2.Type.Key())
}
func (type2 *safeMapType) MakeMap(cap int) interface{} {
ptr := reflect.New(type2.Type)
ptr.Elem().Set(reflect.MakeMap(type2.Type))
return ptr.Interface()
}
func (type2 *safeMapType) UnsafeMakeMap(cap int) unsafe.Pointer {
panic("does not support unsafe operation")
}
func (type2 *safeMapType) SetIndex(obj interface{}, key interface{}, elem interface{}) {
keyVal := reflect.ValueOf(key)
elemVal := reflect.ValueOf(elem)
val := reflect.ValueOf(obj)
val.Elem().SetMapIndex(keyVal.Elem(), elemVal.Elem())
}
func (type2 *safeMapType) UnsafeSetIndex(obj unsafe.Pointer, key unsafe.Pointer, elem unsafe.Pointer) {
panic("does not support unsafe operation")
}
func (type2 *safeMapType) TryGetIndex(obj interface{}, key interface{}) (interface{}, bool) {
keyVal := reflect.ValueOf(key)
if key == nil {
keyVal = reflect.New(type2.Type.Key()).Elem()
}
val := reflect.ValueOf(obj).MapIndex(keyVal)
if !val.IsValid() {
return nil, false
}
return val.Interface(), true
}
func (type2 *safeMapType) GetIndex(obj interface{}, key interface{}) interface{} {
val := reflect.ValueOf(obj).Elem()
keyVal := reflect.ValueOf(key).Elem()
elemVal := val.MapIndex(keyVal)
if !elemVal.IsValid() {
ptr := reflect.New(reflect.PtrTo(val.Type().Elem()))
return ptr.Elem().Interface()
}
ptr := reflect.New(elemVal.Type())
ptr.Elem().Set(elemVal)
return ptr.Interface()
}
func (type2 *safeMapType) UnsafeGetIndex(obj unsafe.Pointer, key unsafe.Pointer) unsafe.Pointer {
panic("does not support unsafe operation")
}
func (type2 *safeMapType) Iterate(obj interface{}) MapIterator {
m := reflect.ValueOf(obj).Elem()
return &safeMapIterator{
m: m,
keys: m.MapKeys(),
}
}
func (type2 *safeMapType) UnsafeIterate(obj unsafe.Pointer) MapIterator {
panic("does not support unsafe operation")
}
type safeMapIterator struct {
i int
m reflect.Value
keys []reflect.Value
}
func (iter *safeMapIterator) HasNext() bool {
return iter.i != len(iter.keys)
}
func (iter *safeMapIterator) Next() (interface{}, interface{}) {
key := iter.keys[iter.i]
elem := iter.m.MapIndex(key)
iter.i += 1
keyPtr := reflect.New(key.Type())
keyPtr.Elem().Set(key)
elemPtr := reflect.New(elem.Type())
elemPtr.Elem().Set(elem)
return keyPtr.Interface(), elemPtr.Interface()
}
func (iter *safeMapIterator) UnsafeNext() (unsafe.Pointer, unsafe.Pointer) {
panic("does not support unsafe operation")
}