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typeddict.go
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typeddict.go
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/*
* Copyright 2021 ICON Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package codec
import (
"io"
"sort"
)
type TypedDict struct {
Keys []string
Map map[string]*TypedObj
}
func (m *TypedDict) put(key string, value *TypedObj) {
m.Keys = append(m.Keys, key)
m.Map[key] = value
}
func (m *TypedDict) RLPWriteSelf(w Writer) error {
w2, err := w.WriteMap()
if err != nil {
return err
}
e2 := NewEncoder(w2)
keys := m.Keys
if len(keys) != len(m.Map) {
keys = make([]string, 0, len(m.Map))
for k := range m.Map {
keys = append(keys, k)
}
sort.Strings(keys)
}
for _, k := range keys {
if err := e2.Encode(k); err != nil {
return err
}
if err := e2.Encode(m.Map[k]); err != nil {
return err
}
}
return e2.Close()
}
func (m *TypedDict) RLPReadSelf(r Reader) error {
m.Keys = []string{}
m.Map = make(map[string]*TypedObj)
r2, err := r.ReadMap()
if err != nil {
return err
}
d2 := NewDecoder(r2)
for true {
var key string
var value *TypedObj
if err := d2.Decode(&key); err != nil {
if err == io.EOF {
return d2.Close()
}
return err
}
if err := d2.Decode(&value); err != nil {
return err
}
m.put(key, value)
}
return nil
}