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113 lines
2.2 KiB
113 lines
2.2 KiB
// ------------------------------------------------------------------------
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// Project atila
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// Active Thing (activething.com) git.activething.com/go
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//
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// File name rpacker_map.go
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// Created by DEV
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// Modified 05/02/2024
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//
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// Copyright 2024 activething.com
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// ------------------------------------------------------------------------
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// ------------------------------------------------------------------------
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package pjson
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import (
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"codecs/cjson"
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"apacks"
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"reflect"
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"sort"
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)
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type (
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rMap struct {
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keyFn rMapEntryFnc
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packFn rPackerFnc
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}
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)
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func rMapPacker (rtype reflect.Type) rPackerFnc {
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return (*newRMap(rtype)).pack
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}
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func newRMap(rtype reflect.Type) *rMap {
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return &rMap{
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packFn: rTypePacker (rtype.Elem()),
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keyFn : stringifyRKey(rtype.Key()),
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}
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}
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func (p *rMap) pack (s *apacks.State, v reflect.Value, f apacks.Flags) {
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if p.keyFn == nil {
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s.SetError(apacks.G.ErrInvalidKey)
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return
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}
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if v.IsNil() {
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s.W(cjson.G.NullValue)
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return
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}
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if v.Len() == 0 {
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s.Write2Byte('{','}')
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return
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}
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if s.Level > maxCyclesAfter {
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if fn,ok := s.CheckCycle(v.UnsafePointer()); ok {
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defer fn()
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} else {
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s.SetError(apacks.G.ErrRedundantPack)
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return
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}
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}
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mi := v.MapRange()
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ls := make(rMapEntryList,v.Len())
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for i:=0; mi.Next(); i++ {
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ls[i] = rMapEntry{
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v: mi.Value(),
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}
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if er := p.keyFn(&ls[i], mi.Key()); er != nil {
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s.SetError(er)
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return
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}
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}
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sort.Sort(ls)
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s.Open ('{')
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for i:=0; i<len(ls); i++ {
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if i>0 {
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s.WriteByte(',')
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}
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packString(s,ls[i].k,ls[i].f)
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if s.Error != nil {
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return
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}
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s.WriteByte(':')
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p.packFn(s,ls[i].v,0)
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if s.Error != nil {
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return
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}
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}
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s.Close('}')
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}
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