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go/src/themaru/vendor/github.com/modern-go/reflect2/safe_map.go 2.53 KB
476d2547e   김태훈   태마루 시스템 설정 / 업데이트...
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  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")
  }