forked from TrueCloudLab/lego
342 lines
9.5 KiB
Go
342 lines
9.5 KiB
Go
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package responses
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import (
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"encoding/json"
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"github.com/json-iterator/go"
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"io"
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"math"
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"strconv"
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"strings"
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"sync"
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"unsafe"
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)
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const maxUint = ^uint(0)
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const maxInt = int(maxUint >> 1)
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const minInt = -maxInt - 1
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var jsonParser jsoniter.API
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var initJson = &sync.Once{}
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func initJsonParserOnce() {
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initJson.Do(func() {
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registerBetterFuzzyDecoder()
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jsonParser = jsoniter.ConfigCompatibleWithStandardLibrary
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})
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}
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func registerBetterFuzzyDecoder() {
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jsoniter.RegisterTypeDecoder("string", &nullableFuzzyStringDecoder{})
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jsoniter.RegisterTypeDecoder("bool", &fuzzyBoolDecoder{})
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jsoniter.RegisterTypeDecoder("float32", &nullableFuzzyFloat32Decoder{})
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jsoniter.RegisterTypeDecoder("float64", &nullableFuzzyFloat64Decoder{})
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jsoniter.RegisterTypeDecoder("int", &nullableFuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if isFloat {
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val := iter.ReadFloat64()
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if val > float64(maxInt) || val < float64(minInt) {
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iter.ReportError("fuzzy decode int", "exceed range")
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return
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}
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*((*int)(ptr)) = int(val)
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} else {
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*((*int)(ptr)) = iter.ReadInt()
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}
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}})
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jsoniter.RegisterTypeDecoder("uint", &nullableFuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if isFloat {
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val := iter.ReadFloat64()
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if val > float64(maxUint) || val < 0 {
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iter.ReportError("fuzzy decode uint", "exceed range")
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return
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}
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*((*uint)(ptr)) = uint(val)
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} else {
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*((*uint)(ptr)) = iter.ReadUint()
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}
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}})
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jsoniter.RegisterTypeDecoder("int8", &nullableFuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if isFloat {
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val := iter.ReadFloat64()
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if val > float64(math.MaxInt8) || val < float64(math.MinInt8) {
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iter.ReportError("fuzzy decode int8", "exceed range")
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return
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}
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*((*int8)(ptr)) = int8(val)
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} else {
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*((*int8)(ptr)) = iter.ReadInt8()
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}
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}})
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jsoniter.RegisterTypeDecoder("uint8", &nullableFuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if isFloat {
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val := iter.ReadFloat64()
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if val > float64(math.MaxUint8) || val < 0 {
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iter.ReportError("fuzzy decode uint8", "exceed range")
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return
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}
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*((*uint8)(ptr)) = uint8(val)
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} else {
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*((*uint8)(ptr)) = iter.ReadUint8()
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}
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}})
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jsoniter.RegisterTypeDecoder("int16", &nullableFuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if isFloat {
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val := iter.ReadFloat64()
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if val > float64(math.MaxInt16) || val < float64(math.MinInt16) {
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iter.ReportError("fuzzy decode int16", "exceed range")
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return
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}
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*((*int16)(ptr)) = int16(val)
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} else {
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*((*int16)(ptr)) = iter.ReadInt16()
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}
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}})
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jsoniter.RegisterTypeDecoder("uint16", &nullableFuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if isFloat {
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val := iter.ReadFloat64()
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if val > float64(math.MaxUint16) || val < 0 {
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iter.ReportError("fuzzy decode uint16", "exceed range")
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return
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}
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*((*uint16)(ptr)) = uint16(val)
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} else {
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*((*uint16)(ptr)) = iter.ReadUint16()
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}
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}})
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jsoniter.RegisterTypeDecoder("int32", &nullableFuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if isFloat {
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val := iter.ReadFloat64()
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if val > float64(math.MaxInt32) || val < float64(math.MinInt32) {
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iter.ReportError("fuzzy decode int32", "exceed range")
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return
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}
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*((*int32)(ptr)) = int32(val)
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} else {
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*((*int32)(ptr)) = iter.ReadInt32()
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}
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}})
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jsoniter.RegisterTypeDecoder("uint32", &nullableFuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if isFloat {
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val := iter.ReadFloat64()
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if val > float64(math.MaxUint32) || val < 0 {
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iter.ReportError("fuzzy decode uint32", "exceed range")
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return
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}
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*((*uint32)(ptr)) = uint32(val)
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} else {
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*((*uint32)(ptr)) = iter.ReadUint32()
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}
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}})
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jsoniter.RegisterTypeDecoder("int64", &nullableFuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if isFloat {
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val := iter.ReadFloat64()
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if val > float64(math.MaxInt64) || val < float64(math.MinInt64) {
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iter.ReportError("fuzzy decode int64", "exceed range")
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return
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}
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*((*int64)(ptr)) = int64(val)
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} else {
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*((*int64)(ptr)) = iter.ReadInt64()
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}
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}})
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jsoniter.RegisterTypeDecoder("uint64", &nullableFuzzyIntegerDecoder{func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if isFloat {
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val := iter.ReadFloat64()
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if val > float64(math.MaxUint64) || val < 0 {
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iter.ReportError("fuzzy decode uint64", "exceed range")
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return
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}
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*((*uint64)(ptr)) = uint64(val)
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} else {
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*((*uint64)(ptr)) = iter.ReadUint64()
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}
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}})
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}
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type nullableFuzzyStringDecoder struct {
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}
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func (decoder *nullableFuzzyStringDecoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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valueType := iter.WhatIsNext()
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switch valueType {
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case jsoniter.NumberValue:
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var number json.Number
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iter.ReadVal(&number)
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*((*string)(ptr)) = string(number)
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case jsoniter.StringValue:
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*((*string)(ptr)) = iter.ReadString()
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case jsoniter.BoolValue:
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*((*string)(ptr)) = strconv.FormatBool(iter.ReadBool())
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case jsoniter.NilValue:
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iter.ReadNil()
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*((*string)(ptr)) = ""
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default:
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iter.ReportError("fuzzyStringDecoder", "not number or string or bool")
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}
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}
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type fuzzyBoolDecoder struct {
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}
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func (decoder *fuzzyBoolDecoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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valueType := iter.WhatIsNext()
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switch valueType {
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case jsoniter.BoolValue:
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*((*bool)(ptr)) = iter.ReadBool()
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case jsoniter.NumberValue:
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var number json.Number
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iter.ReadVal(&number)
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num, err := number.Int64()
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if err != nil {
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iter.ReportError("fuzzyBoolDecoder", "get value from json.number failed")
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}
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if num == 0 {
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*((*bool)(ptr)) = false
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} else {
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*((*bool)(ptr)) = true
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}
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case jsoniter.StringValue:
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strValue := strings.ToLower(iter.ReadString())
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if strValue == "true" {
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*((*bool)(ptr)) = true
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} else if strValue == "false" || strValue == "" {
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*((*bool)(ptr)) = false
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} else {
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iter.ReportError("fuzzyBoolDecoder", "unsupported bool value: "+strValue)
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}
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case jsoniter.NilValue:
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iter.ReadNil()
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*((*bool)(ptr)) = false
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default:
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iter.ReportError("fuzzyBoolDecoder", "not number or string or nil")
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}
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}
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type tolerateEmptyArrayDecoder struct {
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valDecoder jsoniter.ValDecoder
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}
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func (decoder *tolerateEmptyArrayDecoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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if iter.WhatIsNext() == jsoniter.ArrayValue {
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iter.Skip()
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newIter := iter.Pool().BorrowIterator([]byte("{}"))
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defer iter.Pool().ReturnIterator(newIter)
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decoder.valDecoder.Decode(ptr, newIter)
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} else {
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decoder.valDecoder.Decode(ptr, iter)
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}
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}
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type nullableFuzzyIntegerDecoder struct {
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fun func(isFloat bool, ptr unsafe.Pointer, iter *jsoniter.Iterator)
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}
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func (decoder *nullableFuzzyIntegerDecoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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valueType := iter.WhatIsNext()
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var str string
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switch valueType {
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case jsoniter.NumberValue:
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var number json.Number
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iter.ReadVal(&number)
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str = string(number)
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case jsoniter.StringValue:
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str = iter.ReadString()
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// support empty string
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if str == "" {
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str = "0"
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}
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case jsoniter.BoolValue:
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if iter.ReadBool() {
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str = "1"
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} else {
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str = "0"
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}
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case jsoniter.NilValue:
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iter.ReadNil()
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str = "0"
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default:
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iter.ReportError("fuzzyIntegerDecoder", "not number or string")
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}
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newIter := iter.Pool().BorrowIterator([]byte(str))
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defer iter.Pool().ReturnIterator(newIter)
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isFloat := strings.IndexByte(str, '.') != -1
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decoder.fun(isFloat, ptr, newIter)
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if newIter.Error != nil && newIter.Error != io.EOF {
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iter.Error = newIter.Error
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}
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}
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type nullableFuzzyFloat32Decoder struct {
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}
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func (decoder *nullableFuzzyFloat32Decoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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valueType := iter.WhatIsNext()
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var str string
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switch valueType {
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case jsoniter.NumberValue:
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*((*float32)(ptr)) = iter.ReadFloat32()
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case jsoniter.StringValue:
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str = iter.ReadString()
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// support empty string
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if str == "" {
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*((*float32)(ptr)) = 0
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return
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}
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newIter := iter.Pool().BorrowIterator([]byte(str))
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defer iter.Pool().ReturnIterator(newIter)
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*((*float32)(ptr)) = newIter.ReadFloat32()
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if newIter.Error != nil && newIter.Error != io.EOF {
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iter.Error = newIter.Error
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}
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case jsoniter.BoolValue:
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// support bool to float32
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if iter.ReadBool() {
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*((*float32)(ptr)) = 1
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} else {
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*((*float32)(ptr)) = 0
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}
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case jsoniter.NilValue:
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iter.ReadNil()
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*((*float32)(ptr)) = 0
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default:
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iter.ReportError("nullableFuzzyFloat32Decoder", "not number or string")
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}
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}
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type nullableFuzzyFloat64Decoder struct {
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}
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func (decoder *nullableFuzzyFloat64Decoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
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valueType := iter.WhatIsNext()
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var str string
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switch valueType {
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case jsoniter.NumberValue:
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*((*float64)(ptr)) = iter.ReadFloat64()
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case jsoniter.StringValue:
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str = iter.ReadString()
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// support empty string
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if str == "" {
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*((*float64)(ptr)) = 0
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return
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}
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newIter := iter.Pool().BorrowIterator([]byte(str))
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defer iter.Pool().ReturnIterator(newIter)
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*((*float64)(ptr)) = newIter.ReadFloat64()
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if newIter.Error != nil && newIter.Error != io.EOF {
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iter.Error = newIter.Error
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}
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case jsoniter.BoolValue:
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// support bool to float64
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if iter.ReadBool() {
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*((*float64)(ptr)) = 1
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} else {
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*((*float64)(ptr)) = 0
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}
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case jsoniter.NilValue:
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// support empty string
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iter.ReadNil()
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*((*float64)(ptr)) = 0
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default:
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iter.ReportError("nullableFuzzyFloat32Decoder", "not number or string")
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}
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}
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