From 5862c51768cdcd34f859e6ec27fe6c2ca7266434 Mon Sep 17 00:00:00 2001 From: Tao Wen Date: Sun, 9 Jul 2017 15:07:53 +0800 Subject: [PATCH] extract out feature_reflect_struct_decoder --- feature_reflect_object.go | 928 +----------------------------- feature_reflect_struct_decoder.go | 914 +++++++++++++++++++++++++++++ feature_stream.go | 10 +- 3 files changed, 925 insertions(+), 927 deletions(-) create mode 100644 feature_reflect_struct_decoder.go diff --git a/feature_reflect_object.go b/feature_reflect_object.go index 8715a3d..92b683c 100644 --- a/feature_reflect_object.go +++ b/feature_reflect_object.go @@ -66,14 +66,13 @@ func resolveConflictBinding(old, new *Binding) (ignoreOld, ignoreNew bool) { } else { if oldTagged { return true, false + } + if len(old.levels) > len(new.levels) { + return true, false + } else if len(new.levels) > len(old.levels) { + return false, true } else { - if len(old.levels) > len(new.levels) { - return true, false - } else if len(new.levels) > len(old.levels) { - return false, true - } else { - return true, true - } + return true, true } } } @@ -107,921 +106,6 @@ func decoderOfStruct(cfg *frozenConfig, typ reflect.Type) (ValDecoder, error) { return createStructDecoder(typ, fields) } -func createStructDecoder(typ reflect.Type, fields map[string]*structFieldDecoder) (ValDecoder, error) { - knownHash := map[int32]struct{}{ - 0: {}, - } - switch len(fields) { - case 0: - return &skipDecoder{typ}, nil - case 1: - for fieldName, fieldDecoder := range fields { - fieldHash := calcHash(fieldName) - _, known := knownHash[fieldHash] - if known { - return &generalStructDecoder{typ, fields}, nil - } else { - knownHash[fieldHash] = struct{}{} - } - return &oneFieldStructDecoder{typ, fieldHash, fieldDecoder}, nil - } - case 2: - var fieldHash1 int32 - var fieldHash2 int32 - var fieldDecoder1 *structFieldDecoder - var fieldDecoder2 *structFieldDecoder - for fieldName, fieldDecoder := range fields { - fieldHash := calcHash(fieldName) - _, known := knownHash[fieldHash] - if known { - return &generalStructDecoder{typ, fields}, nil - } else { - knownHash[fieldHash] = struct{}{} - } - if fieldHash1 == 0 { - fieldHash1 = fieldHash - fieldDecoder1 = fieldDecoder - } else { - fieldHash2 = fieldHash - fieldDecoder2 = fieldDecoder - } - } - return &twoFieldsStructDecoder{typ, fieldHash1, fieldDecoder1, fieldHash2, fieldDecoder2}, nil - case 3: - var fieldName1 int32 - var fieldName2 int32 - var fieldName3 int32 - var fieldDecoder1 *structFieldDecoder - var fieldDecoder2 *structFieldDecoder - var fieldDecoder3 *structFieldDecoder - for fieldName, fieldDecoder := range fields { - fieldHash := calcHash(fieldName) - _, known := knownHash[fieldHash] - if known { - return &generalStructDecoder{typ, fields}, nil - } else { - knownHash[fieldHash] = struct{}{} - } - if fieldName1 == 0 { - fieldName1 = fieldHash - fieldDecoder1 = fieldDecoder - } else if fieldName2 == 0 { - fieldName2 = fieldHash - fieldDecoder2 = fieldDecoder - } else { - fieldName3 = fieldHash - fieldDecoder3 = fieldDecoder - } - } - return &threeFieldsStructDecoder{typ, - fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3}, nil - case 4: - var fieldName1 int32 - var fieldName2 int32 - var fieldName3 int32 - var fieldName4 int32 - var fieldDecoder1 *structFieldDecoder - var fieldDecoder2 *structFieldDecoder - var fieldDecoder3 *structFieldDecoder - var fieldDecoder4 *structFieldDecoder - for fieldName, fieldDecoder := range fields { - fieldHash := calcHash(fieldName) - _, known := knownHash[fieldHash] - if known { - return &generalStructDecoder{typ, fields}, nil - } else { - knownHash[fieldHash] = struct{}{} - } - if fieldName1 == 0 { - fieldName1 = fieldHash - fieldDecoder1 = fieldDecoder - } else if fieldName2 == 0 { - fieldName2 = fieldHash - fieldDecoder2 = fieldDecoder - } else if fieldName3 == 0 { - fieldName3 = fieldHash - fieldDecoder3 = fieldDecoder - } else { - fieldName4 = fieldHash - fieldDecoder4 = fieldDecoder - } - } - return &fourFieldsStructDecoder{typ, - fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, - fieldName4, fieldDecoder4}, nil - case 5: - var fieldName1 int32 - var fieldName2 int32 - var fieldName3 int32 - var fieldName4 int32 - var fieldName5 int32 - var fieldDecoder1 *structFieldDecoder - var fieldDecoder2 *structFieldDecoder - var fieldDecoder3 *structFieldDecoder - var fieldDecoder4 *structFieldDecoder - var fieldDecoder5 *structFieldDecoder - for fieldName, fieldDecoder := range fields { - fieldHash := calcHash(fieldName) - _, known := knownHash[fieldHash] - if known { - return &generalStructDecoder{typ, fields}, nil - } else { - knownHash[fieldHash] = struct{}{} - } - if fieldName1 == 0 { - fieldName1 = fieldHash - fieldDecoder1 = fieldDecoder - } else if fieldName2 == 0 { - fieldName2 = fieldHash - fieldDecoder2 = fieldDecoder - } else if fieldName3 == 0 { - fieldName3 = fieldHash - fieldDecoder3 = fieldDecoder - } else if fieldName4 == 0 { - fieldName4 = fieldHash - fieldDecoder4 = fieldDecoder - } else { - fieldName5 = fieldHash - fieldDecoder5 = fieldDecoder - } - } - return &fiveFieldsStructDecoder{typ, - fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, - fieldName4, fieldDecoder4, fieldName5, fieldDecoder5}, nil - case 6: - var fieldName1 int32 - var fieldName2 int32 - var fieldName3 int32 - var fieldName4 int32 - var fieldName5 int32 - var fieldName6 int32 - var fieldDecoder1 *structFieldDecoder - var fieldDecoder2 *structFieldDecoder - var fieldDecoder3 *structFieldDecoder - var fieldDecoder4 *structFieldDecoder - var fieldDecoder5 *structFieldDecoder - var fieldDecoder6 *structFieldDecoder - for fieldName, fieldDecoder := range fields { - fieldHash := calcHash(fieldName) - _, known := knownHash[fieldHash] - if known { - return &generalStructDecoder{typ, fields}, nil - } else { - knownHash[fieldHash] = struct{}{} - } - if fieldName1 == 0 { - fieldName1 = fieldHash - fieldDecoder1 = fieldDecoder - } else if fieldName2 == 0 { - fieldName2 = fieldHash - fieldDecoder2 = fieldDecoder - } else if fieldName3 == 0 { - fieldName3 = fieldHash - fieldDecoder3 = fieldDecoder - } else if fieldName4 == 0 { - fieldName4 = fieldHash - fieldDecoder4 = fieldDecoder - } else if fieldName5 == 0 { - fieldName5 = fieldHash - fieldDecoder5 = fieldDecoder - } else { - fieldName6 = fieldHash - fieldDecoder6 = fieldDecoder - } - } - return &sixFieldsStructDecoder{typ, - fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, - fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6}, nil - case 7: - var fieldName1 int32 - var fieldName2 int32 - var fieldName3 int32 - var fieldName4 int32 - var fieldName5 int32 - var fieldName6 int32 - var fieldName7 int32 - var fieldDecoder1 *structFieldDecoder - var fieldDecoder2 *structFieldDecoder - var fieldDecoder3 *structFieldDecoder - var fieldDecoder4 *structFieldDecoder - var fieldDecoder5 *structFieldDecoder - var fieldDecoder6 *structFieldDecoder - var fieldDecoder7 *structFieldDecoder - for fieldName, fieldDecoder := range fields { - fieldHash := calcHash(fieldName) - _, known := knownHash[fieldHash] - if known { - return &generalStructDecoder{typ, fields}, nil - } else { - knownHash[fieldHash] = struct{}{} - } - if fieldName1 == 0 { - fieldName1 = fieldHash - fieldDecoder1 = fieldDecoder - } else if fieldName2 == 0 { - fieldName2 = fieldHash - fieldDecoder2 = fieldDecoder - } else if fieldName3 == 0 { - fieldName3 = fieldHash - fieldDecoder3 = fieldDecoder - } else if fieldName4 == 0 { - fieldName4 = fieldHash - fieldDecoder4 = fieldDecoder - } else if fieldName5 == 0 { - fieldName5 = fieldHash - fieldDecoder5 = fieldDecoder - } else if fieldName6 == 0 { - fieldName6 = fieldHash - fieldDecoder6 = fieldDecoder - } else { - fieldName7 = fieldHash - fieldDecoder7 = fieldDecoder - } - } - return &sevenFieldsStructDecoder{typ, - fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, - fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6, - fieldName7, fieldDecoder7}, nil - case 8: - var fieldName1 int32 - var fieldName2 int32 - var fieldName3 int32 - var fieldName4 int32 - var fieldName5 int32 - var fieldName6 int32 - var fieldName7 int32 - var fieldName8 int32 - var fieldDecoder1 *structFieldDecoder - var fieldDecoder2 *structFieldDecoder - var fieldDecoder3 *structFieldDecoder - var fieldDecoder4 *structFieldDecoder - var fieldDecoder5 *structFieldDecoder - var fieldDecoder6 *structFieldDecoder - var fieldDecoder7 *structFieldDecoder - var fieldDecoder8 *structFieldDecoder - for fieldName, fieldDecoder := range fields { - fieldHash := calcHash(fieldName) - _, known := knownHash[fieldHash] - if known { - return &generalStructDecoder{typ, fields}, nil - } else { - knownHash[fieldHash] = struct{}{} - } - if fieldName1 == 0 { - fieldName1 = fieldHash - fieldDecoder1 = fieldDecoder - } else if fieldName2 == 0 { - fieldName2 = fieldHash - fieldDecoder2 = fieldDecoder - } else if fieldName3 == 0 { - fieldName3 = fieldHash - fieldDecoder3 = fieldDecoder - } else if fieldName4 == 0 { - fieldName4 = fieldHash - fieldDecoder4 = fieldDecoder - } else if fieldName5 == 0 { - fieldName5 = fieldHash - fieldDecoder5 = fieldDecoder - } else if fieldName6 == 0 { - fieldName6 = fieldHash - fieldDecoder6 = fieldDecoder - } else if fieldName7 == 0 { - fieldName7 = fieldHash - fieldDecoder7 = fieldDecoder - } else { - fieldName8 = fieldHash - fieldDecoder8 = fieldDecoder - } - } - return &eightFieldsStructDecoder{typ, - fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, - fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6, - fieldName7, fieldDecoder7, fieldName8, fieldDecoder8}, nil - case 9: - var fieldName1 int32 - var fieldName2 int32 - var fieldName3 int32 - var fieldName4 int32 - var fieldName5 int32 - var fieldName6 int32 - var fieldName7 int32 - var fieldName8 int32 - var fieldName9 int32 - var fieldDecoder1 *structFieldDecoder - var fieldDecoder2 *structFieldDecoder - var fieldDecoder3 *structFieldDecoder - var fieldDecoder4 *structFieldDecoder - var fieldDecoder5 *structFieldDecoder - var fieldDecoder6 *structFieldDecoder - var fieldDecoder7 *structFieldDecoder - var fieldDecoder8 *structFieldDecoder - var fieldDecoder9 *structFieldDecoder - for fieldName, fieldDecoder := range fields { - fieldHash := calcHash(fieldName) - _, known := knownHash[fieldHash] - if known { - return &generalStructDecoder{typ, fields}, nil - } else { - knownHash[fieldHash] = struct{}{} - } - if fieldName1 == 0 { - fieldName1 = fieldHash - fieldDecoder1 = fieldDecoder - } else if fieldName2 == 0 { - fieldName2 = fieldHash - fieldDecoder2 = fieldDecoder - } else if fieldName3 == 0 { - fieldName3 = fieldHash - fieldDecoder3 = fieldDecoder - } else if fieldName4 == 0 { - fieldName4 = fieldHash - fieldDecoder4 = fieldDecoder - } else if fieldName5 == 0 { - fieldName5 = fieldHash - fieldDecoder5 = fieldDecoder - } else if fieldName6 == 0 { - fieldName6 = fieldHash - fieldDecoder6 = fieldDecoder - } else if fieldName7 == 0 { - fieldName7 = fieldHash - fieldDecoder7 = fieldDecoder - } else if fieldName8 == 0 { - fieldName8 = fieldHash - fieldDecoder8 = fieldDecoder - } else { - fieldName9 = fieldHash - fieldDecoder9 = fieldDecoder - } - } - return &nineFieldsStructDecoder{typ, - fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, - fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6, - fieldName7, fieldDecoder7, fieldName8, fieldDecoder8, fieldName9, fieldDecoder9}, nil - case 10: - var fieldName1 int32 - var fieldName2 int32 - var fieldName3 int32 - var fieldName4 int32 - var fieldName5 int32 - var fieldName6 int32 - var fieldName7 int32 - var fieldName8 int32 - var fieldName9 int32 - var fieldName10 int32 - var fieldDecoder1 *structFieldDecoder - var fieldDecoder2 *structFieldDecoder - var fieldDecoder3 *structFieldDecoder - var fieldDecoder4 *structFieldDecoder - var fieldDecoder5 *structFieldDecoder - var fieldDecoder6 *structFieldDecoder - var fieldDecoder7 *structFieldDecoder - var fieldDecoder8 *structFieldDecoder - var fieldDecoder9 *structFieldDecoder - var fieldDecoder10 *structFieldDecoder - for fieldName, fieldDecoder := range fields { - fieldHash := calcHash(fieldName) - _, known := knownHash[fieldHash] - if known { - return &generalStructDecoder{typ, fields}, nil - } else { - knownHash[fieldHash] = struct{}{} - } - if fieldName1 == 0 { - fieldName1 = fieldHash - fieldDecoder1 = fieldDecoder - } else if fieldName2 == 0 { - fieldName2 = fieldHash - fieldDecoder2 = fieldDecoder - } else if fieldName3 == 0 { - fieldName3 = fieldHash - fieldDecoder3 = fieldDecoder - } else if fieldName4 == 0 { - fieldName4 = fieldHash - fieldDecoder4 = fieldDecoder - } else if fieldName5 == 0 { - fieldName5 = fieldHash - fieldDecoder5 = fieldDecoder - } else if fieldName6 == 0 { - fieldName6 = fieldHash - fieldDecoder6 = fieldDecoder - } else if fieldName7 == 0 { - fieldName7 = fieldHash - fieldDecoder7 = fieldDecoder - } else if fieldName8 == 0 { - fieldName8 = fieldHash - fieldDecoder8 = fieldDecoder - } else if fieldName9 == 0 { - fieldName9 = fieldHash - fieldDecoder9 = fieldDecoder - } else { - fieldName10 = fieldHash - fieldDecoder10 = fieldDecoder - } - } - return &tenFieldsStructDecoder{typ, - fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, - fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6, - fieldName7, fieldDecoder7, fieldName8, fieldDecoder8, fieldName9, fieldDecoder9, - fieldName10, fieldDecoder10}, nil - } - return &generalStructDecoder{typ, fields}, nil -} - -type generalStructDecoder struct { - typ reflect.Type - fields map[string]*structFieldDecoder -} - -func (decoder *generalStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - fieldBytes := iter.readObjectFieldAsBytes() - field := *(*string)(unsafe.Pointer(&fieldBytes)) - fieldDecoder := decoder.fields[field] - if fieldDecoder == nil { - iter.Skip() - } else { - fieldDecoder.Decode(ptr, iter) - } - for iter.nextToken() == ',' { - fieldBytes = iter.readObjectFieldAsBytes() - field = *(*string)(unsafe.Pointer(&fieldBytes)) - fieldDecoder = decoder.fields[field] - if fieldDecoder == nil { - iter.Skip() - } else { - fieldDecoder.Decode(ptr, iter) - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type skipDecoder struct { - typ reflect.Type -} - -func (decoder *skipDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - iter.Skip() - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type oneFieldStructDecoder struct { - typ reflect.Type - fieldHash int32 - fieldDecoder *structFieldDecoder -} - -func (decoder *oneFieldStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - for { - if iter.readFieldHash() == decoder.fieldHash { - decoder.fieldDecoder.Decode(ptr, iter) - } else { - iter.Skip() - } - if iter.isObjectEnd() { - break - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type twoFieldsStructDecoder struct { - typ reflect.Type - fieldHash1 int32 - fieldDecoder1 *structFieldDecoder - fieldHash2 int32 - fieldDecoder2 *structFieldDecoder -} - -func (decoder *twoFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - for { - switch iter.readFieldHash() { - case decoder.fieldHash1: - decoder.fieldDecoder1.Decode(ptr, iter) - case decoder.fieldHash2: - decoder.fieldDecoder2.Decode(ptr, iter) - default: - iter.Skip() - } - if iter.isObjectEnd() { - break - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type threeFieldsStructDecoder struct { - typ reflect.Type - fieldHash1 int32 - fieldDecoder1 *structFieldDecoder - fieldHash2 int32 - fieldDecoder2 *structFieldDecoder - fieldHash3 int32 - fieldDecoder3 *structFieldDecoder -} - -func (decoder *threeFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - for { - switch iter.readFieldHash() { - case decoder.fieldHash1: - decoder.fieldDecoder1.Decode(ptr, iter) - case decoder.fieldHash2: - decoder.fieldDecoder2.Decode(ptr, iter) - case decoder.fieldHash3: - decoder.fieldDecoder3.Decode(ptr, iter) - default: - iter.Skip() - } - if iter.isObjectEnd() { - break - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type fourFieldsStructDecoder struct { - typ reflect.Type - fieldHash1 int32 - fieldDecoder1 *structFieldDecoder - fieldHash2 int32 - fieldDecoder2 *structFieldDecoder - fieldHash3 int32 - fieldDecoder3 *structFieldDecoder - fieldHash4 int32 - fieldDecoder4 *structFieldDecoder -} - -func (decoder *fourFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - for { - switch iter.readFieldHash() { - case decoder.fieldHash1: - decoder.fieldDecoder1.Decode(ptr, iter) - case decoder.fieldHash2: - decoder.fieldDecoder2.Decode(ptr, iter) - case decoder.fieldHash3: - decoder.fieldDecoder3.Decode(ptr, iter) - case decoder.fieldHash4: - decoder.fieldDecoder4.Decode(ptr, iter) - default: - iter.Skip() - } - if iter.isObjectEnd() { - break - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type fiveFieldsStructDecoder struct { - typ reflect.Type - fieldHash1 int32 - fieldDecoder1 *structFieldDecoder - fieldHash2 int32 - fieldDecoder2 *structFieldDecoder - fieldHash3 int32 - fieldDecoder3 *structFieldDecoder - fieldHash4 int32 - fieldDecoder4 *structFieldDecoder - fieldHash5 int32 - fieldDecoder5 *structFieldDecoder -} - -func (decoder *fiveFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - for { - switch iter.readFieldHash() { - case decoder.fieldHash1: - decoder.fieldDecoder1.Decode(ptr, iter) - case decoder.fieldHash2: - decoder.fieldDecoder2.Decode(ptr, iter) - case decoder.fieldHash3: - decoder.fieldDecoder3.Decode(ptr, iter) - case decoder.fieldHash4: - decoder.fieldDecoder4.Decode(ptr, iter) - case decoder.fieldHash5: - decoder.fieldDecoder5.Decode(ptr, iter) - default: - iter.Skip() - } - if iter.isObjectEnd() { - break - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type sixFieldsStructDecoder struct { - typ reflect.Type - fieldHash1 int32 - fieldDecoder1 *structFieldDecoder - fieldHash2 int32 - fieldDecoder2 *structFieldDecoder - fieldHash3 int32 - fieldDecoder3 *structFieldDecoder - fieldHash4 int32 - fieldDecoder4 *structFieldDecoder - fieldHash5 int32 - fieldDecoder5 *structFieldDecoder - fieldHash6 int32 - fieldDecoder6 *structFieldDecoder -} - -func (decoder *sixFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - for { - switch iter.readFieldHash() { - case decoder.fieldHash1: - decoder.fieldDecoder1.Decode(ptr, iter) - case decoder.fieldHash2: - decoder.fieldDecoder2.Decode(ptr, iter) - case decoder.fieldHash3: - decoder.fieldDecoder3.Decode(ptr, iter) - case decoder.fieldHash4: - decoder.fieldDecoder4.Decode(ptr, iter) - case decoder.fieldHash5: - decoder.fieldDecoder5.Decode(ptr, iter) - case decoder.fieldHash6: - decoder.fieldDecoder6.Decode(ptr, iter) - default: - iter.Skip() - } - if iter.isObjectEnd() { - break - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type sevenFieldsStructDecoder struct { - typ reflect.Type - fieldHash1 int32 - fieldDecoder1 *structFieldDecoder - fieldHash2 int32 - fieldDecoder2 *structFieldDecoder - fieldHash3 int32 - fieldDecoder3 *structFieldDecoder - fieldHash4 int32 - fieldDecoder4 *structFieldDecoder - fieldHash5 int32 - fieldDecoder5 *structFieldDecoder - fieldHash6 int32 - fieldDecoder6 *structFieldDecoder - fieldHash7 int32 - fieldDecoder7 *structFieldDecoder -} - -func (decoder *sevenFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - for { - switch iter.readFieldHash() { - case decoder.fieldHash1: - decoder.fieldDecoder1.Decode(ptr, iter) - case decoder.fieldHash2: - decoder.fieldDecoder2.Decode(ptr, iter) - case decoder.fieldHash3: - decoder.fieldDecoder3.Decode(ptr, iter) - case decoder.fieldHash4: - decoder.fieldDecoder4.Decode(ptr, iter) - case decoder.fieldHash5: - decoder.fieldDecoder5.Decode(ptr, iter) - case decoder.fieldHash6: - decoder.fieldDecoder6.Decode(ptr, iter) - case decoder.fieldHash7: - decoder.fieldDecoder7.Decode(ptr, iter) - default: - iter.Skip() - } - if iter.isObjectEnd() { - break - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type eightFieldsStructDecoder struct { - typ reflect.Type - fieldHash1 int32 - fieldDecoder1 *structFieldDecoder - fieldHash2 int32 - fieldDecoder2 *structFieldDecoder - fieldHash3 int32 - fieldDecoder3 *structFieldDecoder - fieldHash4 int32 - fieldDecoder4 *structFieldDecoder - fieldHash5 int32 - fieldDecoder5 *structFieldDecoder - fieldHash6 int32 - fieldDecoder6 *structFieldDecoder - fieldHash7 int32 - fieldDecoder7 *structFieldDecoder - fieldHash8 int32 - fieldDecoder8 *structFieldDecoder -} - -func (decoder *eightFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - for { - switch iter.readFieldHash() { - case decoder.fieldHash1: - decoder.fieldDecoder1.Decode(ptr, iter) - case decoder.fieldHash2: - decoder.fieldDecoder2.Decode(ptr, iter) - case decoder.fieldHash3: - decoder.fieldDecoder3.Decode(ptr, iter) - case decoder.fieldHash4: - decoder.fieldDecoder4.Decode(ptr, iter) - case decoder.fieldHash5: - decoder.fieldDecoder5.Decode(ptr, iter) - case decoder.fieldHash6: - decoder.fieldDecoder6.Decode(ptr, iter) - case decoder.fieldHash7: - decoder.fieldDecoder7.Decode(ptr, iter) - case decoder.fieldHash8: - decoder.fieldDecoder8.Decode(ptr, iter) - default: - iter.Skip() - } - if iter.isObjectEnd() { - break - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type nineFieldsStructDecoder struct { - typ reflect.Type - fieldHash1 int32 - fieldDecoder1 *structFieldDecoder - fieldHash2 int32 - fieldDecoder2 *structFieldDecoder - fieldHash3 int32 - fieldDecoder3 *structFieldDecoder - fieldHash4 int32 - fieldDecoder4 *structFieldDecoder - fieldHash5 int32 - fieldDecoder5 *structFieldDecoder - fieldHash6 int32 - fieldDecoder6 *structFieldDecoder - fieldHash7 int32 - fieldDecoder7 *structFieldDecoder - fieldHash8 int32 - fieldDecoder8 *structFieldDecoder - fieldHash9 int32 - fieldDecoder9 *structFieldDecoder -} - -func (decoder *nineFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - for { - switch iter.readFieldHash() { - case decoder.fieldHash1: - decoder.fieldDecoder1.Decode(ptr, iter) - case decoder.fieldHash2: - decoder.fieldDecoder2.Decode(ptr, iter) - case decoder.fieldHash3: - decoder.fieldDecoder3.Decode(ptr, iter) - case decoder.fieldHash4: - decoder.fieldDecoder4.Decode(ptr, iter) - case decoder.fieldHash5: - decoder.fieldDecoder5.Decode(ptr, iter) - case decoder.fieldHash6: - decoder.fieldDecoder6.Decode(ptr, iter) - case decoder.fieldHash7: - decoder.fieldDecoder7.Decode(ptr, iter) - case decoder.fieldHash8: - decoder.fieldDecoder8.Decode(ptr, iter) - case decoder.fieldHash9: - decoder.fieldDecoder9.Decode(ptr, iter) - default: - iter.Skip() - } - if iter.isObjectEnd() { - break - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type tenFieldsStructDecoder struct { - typ reflect.Type - fieldHash1 int32 - fieldDecoder1 *structFieldDecoder - fieldHash2 int32 - fieldDecoder2 *structFieldDecoder - fieldHash3 int32 - fieldDecoder3 *structFieldDecoder - fieldHash4 int32 - fieldDecoder4 *structFieldDecoder - fieldHash5 int32 - fieldDecoder5 *structFieldDecoder - fieldHash6 int32 - fieldDecoder6 *structFieldDecoder - fieldHash7 int32 - fieldDecoder7 *structFieldDecoder - fieldHash8 int32 - fieldDecoder8 *structFieldDecoder - fieldHash9 int32 - fieldDecoder9 *structFieldDecoder - fieldHash10 int32 - fieldDecoder10 *structFieldDecoder -} - -func (decoder *tenFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - if !iter.readObjectStart() { - return - } - for { - switch iter.readFieldHash() { - case decoder.fieldHash1: - decoder.fieldDecoder1.Decode(ptr, iter) - case decoder.fieldHash2: - decoder.fieldDecoder2.Decode(ptr, iter) - case decoder.fieldHash3: - decoder.fieldDecoder3.Decode(ptr, iter) - case decoder.fieldHash4: - decoder.fieldDecoder4.Decode(ptr, iter) - case decoder.fieldHash5: - decoder.fieldDecoder5.Decode(ptr, iter) - case decoder.fieldHash6: - decoder.fieldDecoder6.Decode(ptr, iter) - case decoder.fieldHash7: - decoder.fieldDecoder7.Decode(ptr, iter) - case decoder.fieldHash8: - decoder.fieldDecoder8.Decode(ptr, iter) - case decoder.fieldHash9: - decoder.fieldDecoder9.Decode(ptr, iter) - case decoder.fieldHash10: - decoder.fieldDecoder10.Decode(ptr, iter) - default: - iter.Skip() - } - if iter.isObjectEnd() { - break - } - } - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) - } -} - -type structFieldDecoder struct { - field *reflect.StructField - fieldDecoder ValDecoder -} - -func (decoder *structFieldDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { - fieldPtr := unsafe.Pointer(uintptr(ptr) + decoder.field.Offset) - decoder.fieldDecoder.Decode(fieldPtr, iter) - if iter.Error != nil && iter.Error != io.EOF { - iter.Error = fmt.Errorf("%s: %s", decoder.field.Name, iter.Error.Error()) - } -} - type structFieldEncoder struct { field *reflect.StructField fieldEncoder ValEncoder diff --git a/feature_reflect_struct_decoder.go b/feature_reflect_struct_decoder.go new file mode 100644 index 0000000..dca109b --- /dev/null +++ b/feature_reflect_struct_decoder.go @@ -0,0 +1,914 @@ +package jsoniter + +import ( + "reflect" + "io" + "fmt" + "unsafe" +) + +func createStructDecoder(typ reflect.Type, fields map[string]*structFieldDecoder) (ValDecoder, error) { + knownHash := map[int32]struct{}{ + 0: {}, + } + switch len(fields) { + case 0: + return &skipDecoder{typ}, nil + case 1: + for fieldName, fieldDecoder := range fields { + fieldHash := calcHash(fieldName) + _, known := knownHash[fieldHash] + if known { + return &generalStructDecoder{typ, fields}, nil + } + knownHash[fieldHash] = struct{}{} + return &oneFieldStructDecoder{typ, fieldHash, fieldDecoder}, nil + } + case 2: + var fieldHash1 int32 + var fieldHash2 int32 + var fieldDecoder1 *structFieldDecoder + var fieldDecoder2 *structFieldDecoder + for fieldName, fieldDecoder := range fields { + fieldHash := calcHash(fieldName) + _, known := knownHash[fieldHash] + if known { + return &generalStructDecoder{typ, fields}, nil + } + knownHash[fieldHash] = struct{}{} + if fieldHash1 == 0 { + fieldHash1 = fieldHash + fieldDecoder1 = fieldDecoder + } else { + fieldHash2 = fieldHash + fieldDecoder2 = fieldDecoder + } + } + return &twoFieldsStructDecoder{typ, fieldHash1, fieldDecoder1, fieldHash2, fieldDecoder2}, nil + case 3: + var fieldName1 int32 + var fieldName2 int32 + var fieldName3 int32 + var fieldDecoder1 *structFieldDecoder + var fieldDecoder2 *structFieldDecoder + var fieldDecoder3 *structFieldDecoder + for fieldName, fieldDecoder := range fields { + fieldHash := calcHash(fieldName) + _, known := knownHash[fieldHash] + if known { + return &generalStructDecoder{typ, fields}, nil + } + knownHash[fieldHash] = struct{}{} + if fieldName1 == 0 { + fieldName1 = fieldHash + fieldDecoder1 = fieldDecoder + } else if fieldName2 == 0 { + fieldName2 = fieldHash + fieldDecoder2 = fieldDecoder + } else { + fieldName3 = fieldHash + fieldDecoder3 = fieldDecoder + } + } + return &threeFieldsStructDecoder{typ, + fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3}, nil + case 4: + var fieldName1 int32 + var fieldName2 int32 + var fieldName3 int32 + var fieldName4 int32 + var fieldDecoder1 *structFieldDecoder + var fieldDecoder2 *structFieldDecoder + var fieldDecoder3 *structFieldDecoder + var fieldDecoder4 *structFieldDecoder + for fieldName, fieldDecoder := range fields { + fieldHash := calcHash(fieldName) + _, known := knownHash[fieldHash] + if known { + return &generalStructDecoder{typ, fields}, nil + } + knownHash[fieldHash] = struct{}{} + if fieldName1 == 0 { + fieldName1 = fieldHash + fieldDecoder1 = fieldDecoder + } else if fieldName2 == 0 { + fieldName2 = fieldHash + fieldDecoder2 = fieldDecoder + } else if fieldName3 == 0 { + fieldName3 = fieldHash + fieldDecoder3 = fieldDecoder + } else { + fieldName4 = fieldHash + fieldDecoder4 = fieldDecoder + } + } + return &fourFieldsStructDecoder{typ, + fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, + fieldName4, fieldDecoder4}, nil + case 5: + var fieldName1 int32 + var fieldName2 int32 + var fieldName3 int32 + var fieldName4 int32 + var fieldName5 int32 + var fieldDecoder1 *structFieldDecoder + var fieldDecoder2 *structFieldDecoder + var fieldDecoder3 *structFieldDecoder + var fieldDecoder4 *structFieldDecoder + var fieldDecoder5 *structFieldDecoder + for fieldName, fieldDecoder := range fields { + fieldHash := calcHash(fieldName) + _, known := knownHash[fieldHash] + if known { + return &generalStructDecoder{typ, fields}, nil + } + knownHash[fieldHash] = struct{}{} + if fieldName1 == 0 { + fieldName1 = fieldHash + fieldDecoder1 = fieldDecoder + } else if fieldName2 == 0 { + fieldName2 = fieldHash + fieldDecoder2 = fieldDecoder + } else if fieldName3 == 0 { + fieldName3 = fieldHash + fieldDecoder3 = fieldDecoder + } else if fieldName4 == 0 { + fieldName4 = fieldHash + fieldDecoder4 = fieldDecoder + } else { + fieldName5 = fieldHash + fieldDecoder5 = fieldDecoder + } + } + return &fiveFieldsStructDecoder{typ, + fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, + fieldName4, fieldDecoder4, fieldName5, fieldDecoder5}, nil + case 6: + var fieldName1 int32 + var fieldName2 int32 + var fieldName3 int32 + var fieldName4 int32 + var fieldName5 int32 + var fieldName6 int32 + var fieldDecoder1 *structFieldDecoder + var fieldDecoder2 *structFieldDecoder + var fieldDecoder3 *structFieldDecoder + var fieldDecoder4 *structFieldDecoder + var fieldDecoder5 *structFieldDecoder + var fieldDecoder6 *structFieldDecoder + for fieldName, fieldDecoder := range fields { + fieldHash := calcHash(fieldName) + _, known := knownHash[fieldHash] + if known { + return &generalStructDecoder{typ, fields}, nil + } + knownHash[fieldHash] = struct{}{} + if fieldName1 == 0 { + fieldName1 = fieldHash + fieldDecoder1 = fieldDecoder + } else if fieldName2 == 0 { + fieldName2 = fieldHash + fieldDecoder2 = fieldDecoder + } else if fieldName3 == 0 { + fieldName3 = fieldHash + fieldDecoder3 = fieldDecoder + } else if fieldName4 == 0 { + fieldName4 = fieldHash + fieldDecoder4 = fieldDecoder + } else if fieldName5 == 0 { + fieldName5 = fieldHash + fieldDecoder5 = fieldDecoder + } else { + fieldName6 = fieldHash + fieldDecoder6 = fieldDecoder + } + } + return &sixFieldsStructDecoder{typ, + fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, + fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6}, nil + case 7: + var fieldName1 int32 + var fieldName2 int32 + var fieldName3 int32 + var fieldName4 int32 + var fieldName5 int32 + var fieldName6 int32 + var fieldName7 int32 + var fieldDecoder1 *structFieldDecoder + var fieldDecoder2 *structFieldDecoder + var fieldDecoder3 *structFieldDecoder + var fieldDecoder4 *structFieldDecoder + var fieldDecoder5 *structFieldDecoder + var fieldDecoder6 *structFieldDecoder + var fieldDecoder7 *structFieldDecoder + for fieldName, fieldDecoder := range fields { + fieldHash := calcHash(fieldName) + _, known := knownHash[fieldHash] + if known { + return &generalStructDecoder{typ, fields}, nil + } + knownHash[fieldHash] = struct{}{} + if fieldName1 == 0 { + fieldName1 = fieldHash + fieldDecoder1 = fieldDecoder + } else if fieldName2 == 0 { + fieldName2 = fieldHash + fieldDecoder2 = fieldDecoder + } else if fieldName3 == 0 { + fieldName3 = fieldHash + fieldDecoder3 = fieldDecoder + } else if fieldName4 == 0 { + fieldName4 = fieldHash + fieldDecoder4 = fieldDecoder + } else if fieldName5 == 0 { + fieldName5 = fieldHash + fieldDecoder5 = fieldDecoder + } else if fieldName6 == 0 { + fieldName6 = fieldHash + fieldDecoder6 = fieldDecoder + } else { + fieldName7 = fieldHash + fieldDecoder7 = fieldDecoder + } + } + return &sevenFieldsStructDecoder{typ, + fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, + fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6, + fieldName7, fieldDecoder7}, nil + case 8: + var fieldName1 int32 + var fieldName2 int32 + var fieldName3 int32 + var fieldName4 int32 + var fieldName5 int32 + var fieldName6 int32 + var fieldName7 int32 + var fieldName8 int32 + var fieldDecoder1 *structFieldDecoder + var fieldDecoder2 *structFieldDecoder + var fieldDecoder3 *structFieldDecoder + var fieldDecoder4 *structFieldDecoder + var fieldDecoder5 *structFieldDecoder + var fieldDecoder6 *structFieldDecoder + var fieldDecoder7 *structFieldDecoder + var fieldDecoder8 *structFieldDecoder + for fieldName, fieldDecoder := range fields { + fieldHash := calcHash(fieldName) + _, known := knownHash[fieldHash] + if known { + return &generalStructDecoder{typ, fields}, nil + } + knownHash[fieldHash] = struct{}{} + if fieldName1 == 0 { + fieldName1 = fieldHash + fieldDecoder1 = fieldDecoder + } else if fieldName2 == 0 { + fieldName2 = fieldHash + fieldDecoder2 = fieldDecoder + } else if fieldName3 == 0 { + fieldName3 = fieldHash + fieldDecoder3 = fieldDecoder + } else if fieldName4 == 0 { + fieldName4 = fieldHash + fieldDecoder4 = fieldDecoder + } else if fieldName5 == 0 { + fieldName5 = fieldHash + fieldDecoder5 = fieldDecoder + } else if fieldName6 == 0 { + fieldName6 = fieldHash + fieldDecoder6 = fieldDecoder + } else if fieldName7 == 0 { + fieldName7 = fieldHash + fieldDecoder7 = fieldDecoder + } else { + fieldName8 = fieldHash + fieldDecoder8 = fieldDecoder + } + } + return &eightFieldsStructDecoder{typ, + fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, + fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6, + fieldName7, fieldDecoder7, fieldName8, fieldDecoder8}, nil + case 9: + var fieldName1 int32 + var fieldName2 int32 + var fieldName3 int32 + var fieldName4 int32 + var fieldName5 int32 + var fieldName6 int32 + var fieldName7 int32 + var fieldName8 int32 + var fieldName9 int32 + var fieldDecoder1 *structFieldDecoder + var fieldDecoder2 *structFieldDecoder + var fieldDecoder3 *structFieldDecoder + var fieldDecoder4 *structFieldDecoder + var fieldDecoder5 *structFieldDecoder + var fieldDecoder6 *structFieldDecoder + var fieldDecoder7 *structFieldDecoder + var fieldDecoder8 *structFieldDecoder + var fieldDecoder9 *structFieldDecoder + for fieldName, fieldDecoder := range fields { + fieldHash := calcHash(fieldName) + _, known := knownHash[fieldHash] + if known { + return &generalStructDecoder{typ, fields}, nil + } + knownHash[fieldHash] = struct{}{} + if fieldName1 == 0 { + fieldName1 = fieldHash + fieldDecoder1 = fieldDecoder + } else if fieldName2 == 0 { + fieldName2 = fieldHash + fieldDecoder2 = fieldDecoder + } else if fieldName3 == 0 { + fieldName3 = fieldHash + fieldDecoder3 = fieldDecoder + } else if fieldName4 == 0 { + fieldName4 = fieldHash + fieldDecoder4 = fieldDecoder + } else if fieldName5 == 0 { + fieldName5 = fieldHash + fieldDecoder5 = fieldDecoder + } else if fieldName6 == 0 { + fieldName6 = fieldHash + fieldDecoder6 = fieldDecoder + } else if fieldName7 == 0 { + fieldName7 = fieldHash + fieldDecoder7 = fieldDecoder + } else if fieldName8 == 0 { + fieldName8 = fieldHash + fieldDecoder8 = fieldDecoder + } else { + fieldName9 = fieldHash + fieldDecoder9 = fieldDecoder + } + } + return &nineFieldsStructDecoder{typ, + fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, + fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6, + fieldName7, fieldDecoder7, fieldName8, fieldDecoder8, fieldName9, fieldDecoder9}, nil + case 10: + var fieldName1 int32 + var fieldName2 int32 + var fieldName3 int32 + var fieldName4 int32 + var fieldName5 int32 + var fieldName6 int32 + var fieldName7 int32 + var fieldName8 int32 + var fieldName9 int32 + var fieldName10 int32 + var fieldDecoder1 *structFieldDecoder + var fieldDecoder2 *structFieldDecoder + var fieldDecoder3 *structFieldDecoder + var fieldDecoder4 *structFieldDecoder + var fieldDecoder5 *structFieldDecoder + var fieldDecoder6 *structFieldDecoder + var fieldDecoder7 *structFieldDecoder + var fieldDecoder8 *structFieldDecoder + var fieldDecoder9 *structFieldDecoder + var fieldDecoder10 *structFieldDecoder + for fieldName, fieldDecoder := range fields { + fieldHash := calcHash(fieldName) + _, known := knownHash[fieldHash] + if known { + return &generalStructDecoder{typ, fields}, nil + } + knownHash[fieldHash] = struct{}{} + if fieldName1 == 0 { + fieldName1 = fieldHash + fieldDecoder1 = fieldDecoder + } else if fieldName2 == 0 { + fieldName2 = fieldHash + fieldDecoder2 = fieldDecoder + } else if fieldName3 == 0 { + fieldName3 = fieldHash + fieldDecoder3 = fieldDecoder + } else if fieldName4 == 0 { + fieldName4 = fieldHash + fieldDecoder4 = fieldDecoder + } else if fieldName5 == 0 { + fieldName5 = fieldHash + fieldDecoder5 = fieldDecoder + } else if fieldName6 == 0 { + fieldName6 = fieldHash + fieldDecoder6 = fieldDecoder + } else if fieldName7 == 0 { + fieldName7 = fieldHash + fieldDecoder7 = fieldDecoder + } else if fieldName8 == 0 { + fieldName8 = fieldHash + fieldDecoder8 = fieldDecoder + } else if fieldName9 == 0 { + fieldName9 = fieldHash + fieldDecoder9 = fieldDecoder + } else { + fieldName10 = fieldHash + fieldDecoder10 = fieldDecoder + } + } + return &tenFieldsStructDecoder{typ, + fieldName1, fieldDecoder1, fieldName2, fieldDecoder2, fieldName3, fieldDecoder3, + fieldName4, fieldDecoder4, fieldName5, fieldDecoder5, fieldName6, fieldDecoder6, + fieldName7, fieldDecoder7, fieldName8, fieldDecoder8, fieldName9, fieldDecoder9, + fieldName10, fieldDecoder10}, nil + } + return &generalStructDecoder{typ, fields}, nil +} + + +type generalStructDecoder struct { + typ reflect.Type + fields map[string]*structFieldDecoder +} + +func (decoder *generalStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + fieldBytes := iter.readObjectFieldAsBytes() + field := *(*string)(unsafe.Pointer(&fieldBytes)) + fieldDecoder := decoder.fields[field] + if fieldDecoder == nil { + iter.Skip() + } else { + fieldDecoder.Decode(ptr, iter) + } + for iter.nextToken() == ',' { + fieldBytes = iter.readObjectFieldAsBytes() + field = *(*string)(unsafe.Pointer(&fieldBytes)) + fieldDecoder = decoder.fields[field] + if fieldDecoder == nil { + iter.Skip() + } else { + fieldDecoder.Decode(ptr, iter) + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type skipDecoder struct { + typ reflect.Type +} + +func (decoder *skipDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + iter.Skip() + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type oneFieldStructDecoder struct { + typ reflect.Type + fieldHash int32 + fieldDecoder *structFieldDecoder +} + +func (decoder *oneFieldStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + for { + if iter.readFieldHash() == decoder.fieldHash { + decoder.fieldDecoder.Decode(ptr, iter) + } else { + iter.Skip() + } + if iter.isObjectEnd() { + break + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type twoFieldsStructDecoder struct { + typ reflect.Type + fieldHash1 int32 + fieldDecoder1 *structFieldDecoder + fieldHash2 int32 + fieldDecoder2 *structFieldDecoder +} + +func (decoder *twoFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + for { + switch iter.readFieldHash() { + case decoder.fieldHash1: + decoder.fieldDecoder1.Decode(ptr, iter) + case decoder.fieldHash2: + decoder.fieldDecoder2.Decode(ptr, iter) + default: + iter.Skip() + } + if iter.isObjectEnd() { + break + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type threeFieldsStructDecoder struct { + typ reflect.Type + fieldHash1 int32 + fieldDecoder1 *structFieldDecoder + fieldHash2 int32 + fieldDecoder2 *structFieldDecoder + fieldHash3 int32 + fieldDecoder3 *structFieldDecoder +} + +func (decoder *threeFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + for { + switch iter.readFieldHash() { + case decoder.fieldHash1: + decoder.fieldDecoder1.Decode(ptr, iter) + case decoder.fieldHash2: + decoder.fieldDecoder2.Decode(ptr, iter) + case decoder.fieldHash3: + decoder.fieldDecoder3.Decode(ptr, iter) + default: + iter.Skip() + } + if iter.isObjectEnd() { + break + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type fourFieldsStructDecoder struct { + typ reflect.Type + fieldHash1 int32 + fieldDecoder1 *structFieldDecoder + fieldHash2 int32 + fieldDecoder2 *structFieldDecoder + fieldHash3 int32 + fieldDecoder3 *structFieldDecoder + fieldHash4 int32 + fieldDecoder4 *structFieldDecoder +} + +func (decoder *fourFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + for { + switch iter.readFieldHash() { + case decoder.fieldHash1: + decoder.fieldDecoder1.Decode(ptr, iter) + case decoder.fieldHash2: + decoder.fieldDecoder2.Decode(ptr, iter) + case decoder.fieldHash3: + decoder.fieldDecoder3.Decode(ptr, iter) + case decoder.fieldHash4: + decoder.fieldDecoder4.Decode(ptr, iter) + default: + iter.Skip() + } + if iter.isObjectEnd() { + break + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type fiveFieldsStructDecoder struct { + typ reflect.Type + fieldHash1 int32 + fieldDecoder1 *structFieldDecoder + fieldHash2 int32 + fieldDecoder2 *structFieldDecoder + fieldHash3 int32 + fieldDecoder3 *structFieldDecoder + fieldHash4 int32 + fieldDecoder4 *structFieldDecoder + fieldHash5 int32 + fieldDecoder5 *structFieldDecoder +} + +func (decoder *fiveFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + for { + switch iter.readFieldHash() { + case decoder.fieldHash1: + decoder.fieldDecoder1.Decode(ptr, iter) + case decoder.fieldHash2: + decoder.fieldDecoder2.Decode(ptr, iter) + case decoder.fieldHash3: + decoder.fieldDecoder3.Decode(ptr, iter) + case decoder.fieldHash4: + decoder.fieldDecoder4.Decode(ptr, iter) + case decoder.fieldHash5: + decoder.fieldDecoder5.Decode(ptr, iter) + default: + iter.Skip() + } + if iter.isObjectEnd() { + break + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type sixFieldsStructDecoder struct { + typ reflect.Type + fieldHash1 int32 + fieldDecoder1 *structFieldDecoder + fieldHash2 int32 + fieldDecoder2 *structFieldDecoder + fieldHash3 int32 + fieldDecoder3 *structFieldDecoder + fieldHash4 int32 + fieldDecoder4 *structFieldDecoder + fieldHash5 int32 + fieldDecoder5 *structFieldDecoder + fieldHash6 int32 + fieldDecoder6 *structFieldDecoder +} + +func (decoder *sixFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + for { + switch iter.readFieldHash() { + case decoder.fieldHash1: + decoder.fieldDecoder1.Decode(ptr, iter) + case decoder.fieldHash2: + decoder.fieldDecoder2.Decode(ptr, iter) + case decoder.fieldHash3: + decoder.fieldDecoder3.Decode(ptr, iter) + case decoder.fieldHash4: + decoder.fieldDecoder4.Decode(ptr, iter) + case decoder.fieldHash5: + decoder.fieldDecoder5.Decode(ptr, iter) + case decoder.fieldHash6: + decoder.fieldDecoder6.Decode(ptr, iter) + default: + iter.Skip() + } + if iter.isObjectEnd() { + break + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type sevenFieldsStructDecoder struct { + typ reflect.Type + fieldHash1 int32 + fieldDecoder1 *structFieldDecoder + fieldHash2 int32 + fieldDecoder2 *structFieldDecoder + fieldHash3 int32 + fieldDecoder3 *structFieldDecoder + fieldHash4 int32 + fieldDecoder4 *structFieldDecoder + fieldHash5 int32 + fieldDecoder5 *structFieldDecoder + fieldHash6 int32 + fieldDecoder6 *structFieldDecoder + fieldHash7 int32 + fieldDecoder7 *structFieldDecoder +} + +func (decoder *sevenFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + for { + switch iter.readFieldHash() { + case decoder.fieldHash1: + decoder.fieldDecoder1.Decode(ptr, iter) + case decoder.fieldHash2: + decoder.fieldDecoder2.Decode(ptr, iter) + case decoder.fieldHash3: + decoder.fieldDecoder3.Decode(ptr, iter) + case decoder.fieldHash4: + decoder.fieldDecoder4.Decode(ptr, iter) + case decoder.fieldHash5: + decoder.fieldDecoder5.Decode(ptr, iter) + case decoder.fieldHash6: + decoder.fieldDecoder6.Decode(ptr, iter) + case decoder.fieldHash7: + decoder.fieldDecoder7.Decode(ptr, iter) + default: + iter.Skip() + } + if iter.isObjectEnd() { + break + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type eightFieldsStructDecoder struct { + typ reflect.Type + fieldHash1 int32 + fieldDecoder1 *structFieldDecoder + fieldHash2 int32 + fieldDecoder2 *structFieldDecoder + fieldHash3 int32 + fieldDecoder3 *structFieldDecoder + fieldHash4 int32 + fieldDecoder4 *structFieldDecoder + fieldHash5 int32 + fieldDecoder5 *structFieldDecoder + fieldHash6 int32 + fieldDecoder6 *structFieldDecoder + fieldHash7 int32 + fieldDecoder7 *structFieldDecoder + fieldHash8 int32 + fieldDecoder8 *structFieldDecoder +} + +func (decoder *eightFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + for { + switch iter.readFieldHash() { + case decoder.fieldHash1: + decoder.fieldDecoder1.Decode(ptr, iter) + case decoder.fieldHash2: + decoder.fieldDecoder2.Decode(ptr, iter) + case decoder.fieldHash3: + decoder.fieldDecoder3.Decode(ptr, iter) + case decoder.fieldHash4: + decoder.fieldDecoder4.Decode(ptr, iter) + case decoder.fieldHash5: + decoder.fieldDecoder5.Decode(ptr, iter) + case decoder.fieldHash6: + decoder.fieldDecoder6.Decode(ptr, iter) + case decoder.fieldHash7: + decoder.fieldDecoder7.Decode(ptr, iter) + case decoder.fieldHash8: + decoder.fieldDecoder8.Decode(ptr, iter) + default: + iter.Skip() + } + if iter.isObjectEnd() { + break + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type nineFieldsStructDecoder struct { + typ reflect.Type + fieldHash1 int32 + fieldDecoder1 *structFieldDecoder + fieldHash2 int32 + fieldDecoder2 *structFieldDecoder + fieldHash3 int32 + fieldDecoder3 *structFieldDecoder + fieldHash4 int32 + fieldDecoder4 *structFieldDecoder + fieldHash5 int32 + fieldDecoder5 *structFieldDecoder + fieldHash6 int32 + fieldDecoder6 *structFieldDecoder + fieldHash7 int32 + fieldDecoder7 *structFieldDecoder + fieldHash8 int32 + fieldDecoder8 *structFieldDecoder + fieldHash9 int32 + fieldDecoder9 *structFieldDecoder +} + +func (decoder *nineFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + for { + switch iter.readFieldHash() { + case decoder.fieldHash1: + decoder.fieldDecoder1.Decode(ptr, iter) + case decoder.fieldHash2: + decoder.fieldDecoder2.Decode(ptr, iter) + case decoder.fieldHash3: + decoder.fieldDecoder3.Decode(ptr, iter) + case decoder.fieldHash4: + decoder.fieldDecoder4.Decode(ptr, iter) + case decoder.fieldHash5: + decoder.fieldDecoder5.Decode(ptr, iter) + case decoder.fieldHash6: + decoder.fieldDecoder6.Decode(ptr, iter) + case decoder.fieldHash7: + decoder.fieldDecoder7.Decode(ptr, iter) + case decoder.fieldHash8: + decoder.fieldDecoder8.Decode(ptr, iter) + case decoder.fieldHash9: + decoder.fieldDecoder9.Decode(ptr, iter) + default: + iter.Skip() + } + if iter.isObjectEnd() { + break + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type tenFieldsStructDecoder struct { + typ reflect.Type + fieldHash1 int32 + fieldDecoder1 *structFieldDecoder + fieldHash2 int32 + fieldDecoder2 *structFieldDecoder + fieldHash3 int32 + fieldDecoder3 *structFieldDecoder + fieldHash4 int32 + fieldDecoder4 *structFieldDecoder + fieldHash5 int32 + fieldDecoder5 *structFieldDecoder + fieldHash6 int32 + fieldDecoder6 *structFieldDecoder + fieldHash7 int32 + fieldDecoder7 *structFieldDecoder + fieldHash8 int32 + fieldDecoder8 *structFieldDecoder + fieldHash9 int32 + fieldDecoder9 *structFieldDecoder + fieldHash10 int32 + fieldDecoder10 *structFieldDecoder +} + +func (decoder *tenFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + if !iter.readObjectStart() { + return + } + for { + switch iter.readFieldHash() { + case decoder.fieldHash1: + decoder.fieldDecoder1.Decode(ptr, iter) + case decoder.fieldHash2: + decoder.fieldDecoder2.Decode(ptr, iter) + case decoder.fieldHash3: + decoder.fieldDecoder3.Decode(ptr, iter) + case decoder.fieldHash4: + decoder.fieldDecoder4.Decode(ptr, iter) + case decoder.fieldHash5: + decoder.fieldDecoder5.Decode(ptr, iter) + case decoder.fieldHash6: + decoder.fieldDecoder6.Decode(ptr, iter) + case decoder.fieldHash7: + decoder.fieldDecoder7.Decode(ptr, iter) + case decoder.fieldHash8: + decoder.fieldDecoder8.Decode(ptr, iter) + case decoder.fieldHash9: + decoder.fieldDecoder9.Decode(ptr, iter) + case decoder.fieldHash10: + decoder.fieldDecoder10.Decode(ptr, iter) + default: + iter.Skip() + } + if iter.isObjectEnd() { + break + } + } + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%v: %s", decoder.typ, iter.Error.Error()) + } +} + +type structFieldDecoder struct { + field *reflect.StructField + fieldDecoder ValDecoder +} + +func (decoder *structFieldDecoder) Decode(ptr unsafe.Pointer, iter *Iterator) { + fieldPtr := unsafe.Pointer(uintptr(ptr) + decoder.field.Offset) + decoder.fieldDecoder.Decode(fieldPtr, iter) + if iter.Error != nil && iter.Error != io.EOF { + iter.Error = fmt.Errorf("%s: %s", decoder.field.Name, iter.Error.Error()) + } +} \ No newline at end of file diff --git a/feature_stream.go b/feature_stream.go index 3504dfa..2eeb079 100644 --- a/feature_stream.go +++ b/feature_stream.go @@ -16,9 +16,9 @@ type Stream struct { } // NewStream create new stream instance. -// cfg can be jsoniter.ConfigDefault -// out can be nil if write to internal buffer -// bufSize is the initial size for the internal buffer in bytes +// cfg can be jsoniter.ConfigDefault. +// out can be nil if write to internal buffer. +// bufSize is the initial size for the internal buffer in bytes. func NewStream(cfg *frozenConfig, out io.Writer, bufSize int) *Stream { return &Stream{ cfg: cfg, @@ -255,13 +255,13 @@ func (stream *Stream) WriteObjectEnd() { stream.writeByte('}') } -// WriteObjectEnd write {} +// WriteEmptyObject write {} func (stream *Stream) WriteEmptyObject() { stream.writeByte('{') stream.writeByte('}') } -// WriteObjectEnd write , with possible indention +// WriteMore write , with possible indention func (stream *Stream) WriteMore() { stream.writeByte(',') stream.writeIndention(0)