mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-08-26 14:38:04 +02:00
347 lines
8.9 KiB
Go
347 lines
8.9 KiB
Go
|
package jsoniter
|
||
|
|
||
|
import (
|
||
|
"fmt"
|
||
|
"github.com/modern-go/reflect2"
|
||
|
"io"
|
||
|
"reflect"
|
||
|
"sort"
|
||
|
"unsafe"
|
||
|
)
|
||
|
|
||
|
func decoderOfMap(ctx *ctx, typ reflect2.Type) ValDecoder {
|
||
|
mapType := typ.(*reflect2.UnsafeMapType)
|
||
|
keyDecoder := decoderOfMapKey(ctx.append("[mapKey]"), mapType.Key())
|
||
|
elemDecoder := decoderOfType(ctx.append("[mapElem]"), mapType.Elem())
|
||
|
return &mapDecoder{
|
||
|
mapType: mapType,
|
||
|
keyType: mapType.Key(),
|
||
|
elemType: mapType.Elem(),
|
||
|
keyDecoder: keyDecoder,
|
||
|
elemDecoder: elemDecoder,
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func encoderOfMap(ctx *ctx, typ reflect2.Type) ValEncoder {
|
||
|
mapType := typ.(*reflect2.UnsafeMapType)
|
||
|
if ctx.sortMapKeys {
|
||
|
return &sortKeysMapEncoder{
|
||
|
mapType: mapType,
|
||
|
keyEncoder: encoderOfMapKey(ctx.append("[mapKey]"), mapType.Key()),
|
||
|
elemEncoder: encoderOfType(ctx.append("[mapElem]"), mapType.Elem()),
|
||
|
}
|
||
|
}
|
||
|
return &mapEncoder{
|
||
|
mapType: mapType,
|
||
|
keyEncoder: encoderOfMapKey(ctx.append("[mapKey]"), mapType.Key()),
|
||
|
elemEncoder: encoderOfType(ctx.append("[mapElem]"), mapType.Elem()),
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func decoderOfMapKey(ctx *ctx, typ reflect2.Type) ValDecoder {
|
||
|
decoder := ctx.decoderExtension.CreateMapKeyDecoder(typ)
|
||
|
if decoder != nil {
|
||
|
return decoder
|
||
|
}
|
||
|
for _, extension := range ctx.extraExtensions {
|
||
|
decoder := extension.CreateMapKeyDecoder(typ)
|
||
|
if decoder != nil {
|
||
|
return decoder
|
||
|
}
|
||
|
}
|
||
|
|
||
|
ptrType := reflect2.PtrTo(typ)
|
||
|
if ptrType.Implements(unmarshalerType) {
|
||
|
return &referenceDecoder{
|
||
|
&unmarshalerDecoder{
|
||
|
valType: ptrType,
|
||
|
},
|
||
|
}
|
||
|
}
|
||
|
if typ.Implements(unmarshalerType) {
|
||
|
return &unmarshalerDecoder{
|
||
|
valType: typ,
|
||
|
}
|
||
|
}
|
||
|
if ptrType.Implements(textUnmarshalerType) {
|
||
|
return &referenceDecoder{
|
||
|
&textUnmarshalerDecoder{
|
||
|
valType: ptrType,
|
||
|
},
|
||
|
}
|
||
|
}
|
||
|
if typ.Implements(textUnmarshalerType) {
|
||
|
return &textUnmarshalerDecoder{
|
||
|
valType: typ,
|
||
|
}
|
||
|
}
|
||
|
|
||
|
switch typ.Kind() {
|
||
|
case reflect.String:
|
||
|
return decoderOfType(ctx, reflect2.DefaultTypeOfKind(reflect.String))
|
||
|
case reflect.Bool,
|
||
|
reflect.Uint8, reflect.Int8,
|
||
|
reflect.Uint16, reflect.Int16,
|
||
|
reflect.Uint32, reflect.Int32,
|
||
|
reflect.Uint64, reflect.Int64,
|
||
|
reflect.Uint, reflect.Int,
|
||
|
reflect.Float32, reflect.Float64,
|
||
|
reflect.Uintptr:
|
||
|
typ = reflect2.DefaultTypeOfKind(typ.Kind())
|
||
|
return &numericMapKeyDecoder{decoderOfType(ctx, typ)}
|
||
|
default:
|
||
|
return &lazyErrorDecoder{err: fmt.Errorf("unsupported map key type: %v", typ)}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
func encoderOfMapKey(ctx *ctx, typ reflect2.Type) ValEncoder {
|
||
|
encoder := ctx.encoderExtension.CreateMapKeyEncoder(typ)
|
||
|
if encoder != nil {
|
||
|
return encoder
|
||
|
}
|
||
|
for _, extension := range ctx.extraExtensions {
|
||
|
encoder := extension.CreateMapKeyEncoder(typ)
|
||
|
if encoder != nil {
|
||
|
return encoder
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if typ == textMarshalerType {
|
||
|
return &directTextMarshalerEncoder{
|
||
|
stringEncoder: ctx.EncoderOf(reflect2.TypeOf("")),
|
||
|
}
|
||
|
}
|
||
|
if typ.Implements(textMarshalerType) {
|
||
|
return &textMarshalerEncoder{
|
||
|
valType: typ,
|
||
|
stringEncoder: ctx.EncoderOf(reflect2.TypeOf("")),
|
||
|
}
|
||
|
}
|
||
|
|
||
|
switch typ.Kind() {
|
||
|
case reflect.String:
|
||
|
return encoderOfType(ctx, reflect2.DefaultTypeOfKind(reflect.String))
|
||
|
case reflect.Bool,
|
||
|
reflect.Uint8, reflect.Int8,
|
||
|
reflect.Uint16, reflect.Int16,
|
||
|
reflect.Uint32, reflect.Int32,
|
||
|
reflect.Uint64, reflect.Int64,
|
||
|
reflect.Uint, reflect.Int,
|
||
|
reflect.Float32, reflect.Float64,
|
||
|
reflect.Uintptr:
|
||
|
typ = reflect2.DefaultTypeOfKind(typ.Kind())
|
||
|
return &numericMapKeyEncoder{encoderOfType(ctx, typ)}
|
||
|
default:
|
||
|
if typ.Kind() == reflect.Interface {
|
||
|
return &dynamicMapKeyEncoder{ctx, typ}
|
||
|
}
|
||
|
return &lazyErrorEncoder{err: fmt.Errorf("unsupported map key type: %v", typ)}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
type mapDecoder struct {
|
||
|
mapType *reflect2.UnsafeMapType
|
||
|
keyType reflect2.Type
|
||
|
elemType reflect2.Type
|
||
|
keyDecoder ValDecoder
|
||
|
elemDecoder ValDecoder
|
||
|
}
|
||
|
|
||
|
func (decoder *mapDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
|
||
|
mapType := decoder.mapType
|
||
|
c := iter.nextToken()
|
||
|
if c == 'n' {
|
||
|
iter.skipThreeBytes('u', 'l', 'l')
|
||
|
*(*unsafe.Pointer)(ptr) = nil
|
||
|
mapType.UnsafeSet(ptr, mapType.UnsafeNew())
|
||
|
return
|
||
|
}
|
||
|
if mapType.UnsafeIsNil(ptr) {
|
||
|
mapType.UnsafeSet(ptr, mapType.UnsafeMakeMap(0))
|
||
|
}
|
||
|
if c != '{' {
|
||
|
iter.ReportError("ReadMapCB", `expect { or n, but found `+string([]byte{c}))
|
||
|
return
|
||
|
}
|
||
|
c = iter.nextToken()
|
||
|
if c == '}' {
|
||
|
return
|
||
|
}
|
||
|
iter.unreadByte()
|
||
|
key := decoder.keyType.UnsafeNew()
|
||
|
decoder.keyDecoder.Decode(key, iter)
|
||
|
c = iter.nextToken()
|
||
|
if c != ':' {
|
||
|
iter.ReportError("ReadMapCB", "expect : after object field, but found "+string([]byte{c}))
|
||
|
return
|
||
|
}
|
||
|
elem := decoder.elemType.UnsafeNew()
|
||
|
decoder.elemDecoder.Decode(elem, iter)
|
||
|
decoder.mapType.UnsafeSetIndex(ptr, key, elem)
|
||
|
for c = iter.nextToken(); c == ','; c = iter.nextToken() {
|
||
|
key := decoder.keyType.UnsafeNew()
|
||
|
decoder.keyDecoder.Decode(key, iter)
|
||
|
c = iter.nextToken()
|
||
|
if c != ':' {
|
||
|
iter.ReportError("ReadMapCB", "expect : after object field, but found "+string([]byte{c}))
|
||
|
return
|
||
|
}
|
||
|
elem := decoder.elemType.UnsafeNew()
|
||
|
decoder.elemDecoder.Decode(elem, iter)
|
||
|
decoder.mapType.UnsafeSetIndex(ptr, key, elem)
|
||
|
}
|
||
|
if c != '}' {
|
||
|
iter.ReportError("ReadMapCB", `expect }, but found `+string([]byte{c}))
|
||
|
}
|
||
|
}
|
||
|
|
||
|
type numericMapKeyDecoder struct {
|
||
|
decoder ValDecoder
|
||
|
}
|
||
|
|
||
|
func (decoder *numericMapKeyDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) {
|
||
|
c := iter.nextToken()
|
||
|
if c != '"' {
|
||
|
iter.ReportError("ReadMapCB", `expect ", but found `+string([]byte{c}))
|
||
|
return
|
||
|
}
|
||
|
decoder.decoder.Decode(ptr, iter)
|
||
|
c = iter.nextToken()
|
||
|
if c != '"' {
|
||
|
iter.ReportError("ReadMapCB", `expect ", but found `+string([]byte{c}))
|
||
|
return
|
||
|
}
|
||
|
}
|
||
|
|
||
|
type numericMapKeyEncoder struct {
|
||
|
encoder ValEncoder
|
||
|
}
|
||
|
|
||
|
func (encoder *numericMapKeyEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
|
||
|
stream.writeByte('"')
|
||
|
encoder.encoder.Encode(ptr, stream)
|
||
|
stream.writeByte('"')
|
||
|
}
|
||
|
|
||
|
func (encoder *numericMapKeyEncoder) IsEmpty(ptr unsafe.Pointer) bool {
|
||
|
return false
|
||
|
}
|
||
|
|
||
|
type dynamicMapKeyEncoder struct {
|
||
|
ctx *ctx
|
||
|
valType reflect2.Type
|
||
|
}
|
||
|
|
||
|
func (encoder *dynamicMapKeyEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
|
||
|
obj := encoder.valType.UnsafeIndirect(ptr)
|
||
|
encoderOfMapKey(encoder.ctx, reflect2.TypeOf(obj)).Encode(reflect2.PtrOf(obj), stream)
|
||
|
}
|
||
|
|
||
|
func (encoder *dynamicMapKeyEncoder) IsEmpty(ptr unsafe.Pointer) bool {
|
||
|
obj := encoder.valType.UnsafeIndirect(ptr)
|
||
|
return encoderOfMapKey(encoder.ctx, reflect2.TypeOf(obj)).IsEmpty(reflect2.PtrOf(obj))
|
||
|
}
|
||
|
|
||
|
type mapEncoder struct {
|
||
|
mapType *reflect2.UnsafeMapType
|
||
|
keyEncoder ValEncoder
|
||
|
elemEncoder ValEncoder
|
||
|
}
|
||
|
|
||
|
func (encoder *mapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
|
||
|
if *(*unsafe.Pointer)(ptr) == nil {
|
||
|
stream.WriteNil()
|
||
|
return
|
||
|
}
|
||
|
stream.WriteObjectStart()
|
||
|
iter := encoder.mapType.UnsafeIterate(ptr)
|
||
|
for i := 0; iter.HasNext(); i++ {
|
||
|
if i != 0 {
|
||
|
stream.WriteMore()
|
||
|
}
|
||
|
key, elem := iter.UnsafeNext()
|
||
|
encoder.keyEncoder.Encode(key, stream)
|
||
|
if stream.indention > 0 {
|
||
|
stream.writeTwoBytes(byte(':'), byte(' '))
|
||
|
} else {
|
||
|
stream.writeByte(':')
|
||
|
}
|
||
|
encoder.elemEncoder.Encode(elem, stream)
|
||
|
}
|
||
|
stream.WriteObjectEnd()
|
||
|
}
|
||
|
|
||
|
func (encoder *mapEncoder) IsEmpty(ptr unsafe.Pointer) bool {
|
||
|
iter := encoder.mapType.UnsafeIterate(ptr)
|
||
|
return !iter.HasNext()
|
||
|
}
|
||
|
|
||
|
type sortKeysMapEncoder struct {
|
||
|
mapType *reflect2.UnsafeMapType
|
||
|
keyEncoder ValEncoder
|
||
|
elemEncoder ValEncoder
|
||
|
}
|
||
|
|
||
|
func (encoder *sortKeysMapEncoder) Encode(ptr unsafe.Pointer, stream *Stream) {
|
||
|
if *(*unsafe.Pointer)(ptr) == nil {
|
||
|
stream.WriteNil()
|
||
|
return
|
||
|
}
|
||
|
stream.WriteObjectStart()
|
||
|
mapIter := encoder.mapType.UnsafeIterate(ptr)
|
||
|
subStream := stream.cfg.BorrowStream(nil)
|
||
|
subStream.Attachment = stream.Attachment
|
||
|
subIter := stream.cfg.BorrowIterator(nil)
|
||
|
keyValues := encodedKeyValues{}
|
||
|
for mapIter.HasNext() {
|
||
|
key, elem := mapIter.UnsafeNext()
|
||
|
subStreamIndex := subStream.Buffered()
|
||
|
encoder.keyEncoder.Encode(key, subStream)
|
||
|
if subStream.Error != nil && subStream.Error != io.EOF && stream.Error == nil {
|
||
|
stream.Error = subStream.Error
|
||
|
}
|
||
|
encodedKey := subStream.Buffer()[subStreamIndex:]
|
||
|
subIter.ResetBytes(encodedKey)
|
||
|
decodedKey := subIter.ReadString()
|
||
|
if stream.indention > 0 {
|
||
|
subStream.writeTwoBytes(byte(':'), byte(' '))
|
||
|
} else {
|
||
|
subStream.writeByte(':')
|
||
|
}
|
||
|
encoder.elemEncoder.Encode(elem, subStream)
|
||
|
keyValues = append(keyValues, encodedKV{
|
||
|
key: decodedKey,
|
||
|
keyValue: subStream.Buffer()[subStreamIndex:],
|
||
|
})
|
||
|
}
|
||
|
sort.Sort(keyValues)
|
||
|
for i, keyValue := range keyValues {
|
||
|
if i != 0 {
|
||
|
stream.WriteMore()
|
||
|
}
|
||
|
stream.Write(keyValue.keyValue)
|
||
|
}
|
||
|
if subStream.Error != nil && stream.Error == nil {
|
||
|
stream.Error = subStream.Error
|
||
|
}
|
||
|
stream.WriteObjectEnd()
|
||
|
stream.cfg.ReturnStream(subStream)
|
||
|
stream.cfg.ReturnIterator(subIter)
|
||
|
}
|
||
|
|
||
|
func (encoder *sortKeysMapEncoder) IsEmpty(ptr unsafe.Pointer) bool {
|
||
|
iter := encoder.mapType.UnsafeIterate(ptr)
|
||
|
return !iter.HasNext()
|
||
|
}
|
||
|
|
||
|
type encodedKeyValues []encodedKV
|
||
|
|
||
|
type encodedKV struct {
|
||
|
key string
|
||
|
keyValue []byte
|
||
|
}
|
||
|
|
||
|
func (sv encodedKeyValues) Len() int { return len(sv) }
|
||
|
func (sv encodedKeyValues) Swap(i, j int) { sv[i], sv[j] = sv[j], sv[i] }
|
||
|
func (sv encodedKeyValues) Less(i, j int) bool { return sv[i].key < sv[j].key }
|