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|
package deepcopy
import (
"fmt"
"time"
"github.com/gogo/protobuf/types"
)
// CopierFrom can be implemented if an object knows how to copy another into itself.
type CopierFrom interface {
// Copy takes the fields from src and copies them into the target object.
//
// Calling this method with a nil receiver or a nil src may panic.
CopyFrom(src interface{})
}
// Copy copies src into dst. dst and src must have the same type.
//
// If the type has a copy function defined, it will be used.
//
// Default implementations for builtin types and well known protobuf types may
// be provided.
//
// If the copy cannot be performed, this function will panic. Make sure to test
// types that use this function.
func Copy(dst, src interface{}) {
switch dst := dst.(type) {
case *types.Any:
src := src.(*types.Any)
dst.TypeUrl = src.TypeUrl
if src.Value != nil {
dst.Value = make([]byte, len(src.Value))
copy(dst.Value, src.Value)
} else {
dst.Value = nil
}
case *types.Duration:
src := src.(*types.Duration)
*dst = *src
case *time.Duration:
src := src.(*time.Duration)
*dst = *src
case *types.Timestamp:
src := src.(*types.Timestamp)
*dst = *src
case *types.BoolValue:
src := src.(*types.BoolValue)
*dst = *src
case *types.Int64Value:
src := src.(*types.Int64Value)
*dst = *src
case CopierFrom:
dst.CopyFrom(src)
default:
panic(fmt.Sprintf("Copy for %T not implemented", dst))
}
}
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