github.com/alexandrestein/gods@v1.0.1/trees/btree/serialization.go (about) 1 // Copyright (c) 2015, Emir Pasic. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package btree 6 7 import ( 8 "encoding/json" 9 10 "github.com/alexandrestein/gods/containers" 11 "github.com/alexandrestein/gods/utils" 12 ) 13 14 func assertSerializationImplementation() { 15 var _ containers.JSONSerializer = (*Tree)(nil) 16 var _ containers.JSONDeserializer = (*Tree)(nil) 17 } 18 19 // ToJSON outputs the JSON representation of list's elements. 20 func (tree *Tree) ToJSON() ([]byte, error) { 21 elements := make(map[string]interface{}) 22 it := tree.Iterator() 23 for it.Next() { 24 elements[utils.ToString(it.Key())] = it.Value() 25 } 26 return json.Marshal(&elements) 27 } 28 29 // FromJSON populates list's elements from the input JSON representation. 30 func (tree *Tree) FromJSON(data []byte) error { 31 elements := make(map[string]interface{}) 32 err := json.Unmarshal(data, &elements) 33 if err == nil { 34 tree.Clear() 35 for key, value := range elements { 36 tree.Put(utils.FromString(key, tree.ComparatorType), value) 37 } 38 } 39 return err 40 }