/
serialization.go
48 lines (41 loc) · 1.22 KB
/
serialization.go
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// Copyright (c) 2015, Emir Pasic. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package avltree
import (
"encoding/json"
"github.com/emirpasic/gods/containers"
"github.com/emirpasic/gods/utils"
)
// Assert Serialization implementation
var _ containers.JSONSerializer = (*Tree)(nil)
var _ containers.JSONDeserializer = (*Tree)(nil)
// ToJSON outputs the JSON representation of the tree.
func (tree *Tree) ToJSON() ([]byte, error) {
elements := make(map[string]interface{})
it := tree.Iterator()
for it.Next() {
elements[utils.ToString(it.Key())] = it.Value()
}
return json.Marshal(&elements)
}
// FromJSON populates the tree from the input JSON representation.
func (tree *Tree) FromJSON(data []byte) error {
elements := make(map[string]interface{})
err := json.Unmarshal(data, &elements)
if err == nil {
tree.Clear()
for key, value := range elements {
tree.Put(key, value)
}
}
return err
}
// UnmarshalJSON @implements json.Unmarshaler
func (tree *Tree) UnmarshalJSON(bytes []byte) error {
return tree.FromJSON(bytes)
}
// MarshalJSON @implements json.Marshaler
func (tree *Tree) MarshalJSON() ([]byte, error) {
return tree.ToJSON()
}