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clone.go
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clone.go
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/* license: https://mit-license.org
* ==============================================================================
* The MIT License (MIT)
*
* Copyright (c) 2022 Albert Moky
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* ==============================================================================
*/
package types
type Cloneable interface {
Clone() interface{}
}
/**
* Shallow Copy
* ~~~~~~~~~~~~
*/
func Copy(object interface{}) interface{} {
if ValueIsNil(object) {
return nil
} else if obj, ok := object.(Cloneable); ok {
return obj.Clone()
}
// collections
if dict, ok := object.(map[string]interface{}); ok {
return CopyMap(dict)
} else if arr, ok := object.([]interface{}); ok {
return CopyList(arr)
}
// others
return object
}
func CopyMap(dictionary map[string]interface{}) map[string]interface{} {
clone := make(map[string]interface{})
for key, value := range dictionary {
clone[key] = value
}
return clone
}
func CopyList(array []interface{}) []interface{} {
clone := make([]interface{}, len(array))
for key, value := range array {
clone[key] = value
}
return clone
}
/**
* Deep Copy
* ~~~~~~~~~
*/
func DeepCopy(object interface{}) interface{} {
if ValueIsNil(object) {
return nil
} else if obj, ok := object.(Cloneable); ok {
return obj.Clone()
}
// collections
if dict, ok := object.(map[string]interface{}); ok {
return DeepCopyMap(dict)
} else if arr, ok := object.([]interface{}); ok {
return DeepCopyList(arr)
}
// others
return object
}
func DeepCopyMap(dictionary map[string]interface{}) map[string]interface{} {
clone := make(map[string]interface{})
for key, value := range dictionary {
clone[key] = DeepCopy(value)
}
return clone
}
func DeepCopyList(array []interface{}) []interface{} {
clone := make([]interface{}, len(array))
for key, value := range array {
clone[key] = DeepCopy(value)
}
return clone
}