1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
package msgpack
import (
"encoding"
"fmt"
"reflect"
)
var valueEncoders []encoderFunc
//nolint:gochecknoinits
func init() {
valueEncoders = []encoderFunc{
reflect.Bool: encodeBoolValue,
reflect.Int: encodeInt64CondValue,
reflect.Int8: encodeInt8CondValue,
reflect.Int16: encodeInt16CondValue,
reflect.Int32: encodeInt32CondValue,
reflect.Int64: encodeInt64CondValue,
reflect.Uint: encodeUint64CondValue,
reflect.Uint8: encodeUint8CondValue,
reflect.Uint16: encodeUint16CondValue,
reflect.Uint32: encodeUint32CondValue,
reflect.Uint64: encodeUint64CondValue,
reflect.Float32: encodeFloat32Value,
reflect.Float64: encodeFloat64Value,
reflect.Complex64: encodeUnsupportedValue,
reflect.Complex128: encodeUnsupportedValue,
reflect.Array: encodeArrayValue,
reflect.Chan: encodeUnsupportedValue,
reflect.Func: encodeUnsupportedValue,
reflect.Interface: encodeInterfaceValue,
reflect.Map: encodeMapValue,
reflect.Ptr: encodeUnsupportedValue,
reflect.Slice: encodeSliceValue,
reflect.String: encodeStringValue,
reflect.Struct: encodeStructValue,
reflect.UnsafePointer: encodeUnsupportedValue,
}
}
func getEncoder(typ reflect.Type) encoderFunc {
if v, ok := typeEncMap.Load(typ); ok {
return v.(encoderFunc)
}
fn := _getEncoder(typ)
typeEncMap.Store(typ, fn)
return fn
}
func _getEncoder(typ reflect.Type) encoderFunc {
if typ.Implements(customEncoderType) {
return encodeCustomValue
}
if typ.Implements(marshalerType) {
return marshalValue
}
if typ.Implements(binaryMarshalerType) {
return marshalBinaryValue
}
kind := typ.Kind()
// Addressable struct field value.
if kind != reflect.Ptr {
ptr := reflect.PtrTo(typ)
if ptr.Implements(customEncoderType) {
return encodeCustomValuePtr
}
if ptr.Implements(marshalerType) {
return marshalValuePtr
}
if ptr.Implements(binaryMarshalerType) {
return marshalBinaryValuePtr
}
}
if typ == errorType {
return encodeErrorValue
}
switch kind {
case reflect.Ptr:
return ptrEncoderFunc(typ)
case reflect.Slice:
elem := typ.Elem()
if elem.Kind() == reflect.Uint8 {
return encodeByteSliceValue
}
if elem == stringType {
return encodeStringSliceValue
}
case reflect.Array:
if typ.Elem().Kind() == reflect.Uint8 {
return encodeByteArrayValue
}
case reflect.Map:
if typ.Key() == stringType {
switch typ.Elem() {
case stringType:
return encodeMapStringStringValue
case interfaceType:
return encodeMapStringInterfaceValue
}
}
}
return valueEncoders[kind]
}
func ptrEncoderFunc(typ reflect.Type) encoderFunc {
encoder := getEncoder(typ.Elem())
return func(e *Encoder, v reflect.Value) error {
if v.IsNil() {
return e.EncodeNil()
}
return encoder(e, v.Elem())
}
}
func encodeCustomValuePtr(e *Encoder, v reflect.Value) error {
if !v.CanAddr() {
return fmt.Errorf("msgpack: Encode(non-addressable %T)", v.Interface())
}
encoder := v.Addr().Interface().(CustomEncoder)
return encoder.EncodeMsgpack(e)
}
func encodeCustomValue(e *Encoder, v reflect.Value) error {
if nilable(v) && v.IsNil() {
return e.EncodeNil()
}
encoder := v.Interface().(CustomEncoder)
return encoder.EncodeMsgpack(e)
}
func marshalValuePtr(e *Encoder, v reflect.Value) error {
if !v.CanAddr() {
return fmt.Errorf("msgpack: Encode(non-addressable %T)", v.Interface())
}
return marshalValue(e, v.Addr())
}
func marshalValue(e *Encoder, v reflect.Value) error {
if nilable(v) && v.IsNil() {
return e.EncodeNil()
}
marshaler := v.Interface().(Marshaler)
b, err := marshaler.MarshalMsgpack()
if err != nil {
return err
}
_, err = e.w.Write(b)
return err
}
func encodeBoolValue(e *Encoder, v reflect.Value) error {
return e.EncodeBool(v.Bool())
}
func encodeInterfaceValue(e *Encoder, v reflect.Value) error {
if v.IsNil() {
return e.EncodeNil()
}
return e.EncodeValue(v.Elem())
}
func encodeErrorValue(e *Encoder, v reflect.Value) error {
if v.IsNil() {
return e.EncodeNil()
}
return e.EncodeString(v.Interface().(error).Error())
}
func encodeUnsupportedValue(e *Encoder, v reflect.Value) error {
return fmt.Errorf("msgpack: Encode(unsupported %s)", v.Type())
}
func nilable(v reflect.Value) bool {
switch v.Kind() {
case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
return true
}
return false
}
//------------------------------------------------------------------------------
func marshalBinaryValuePtr(e *Encoder, v reflect.Value) error {
if !v.CanAddr() {
return fmt.Errorf("msgpack: Encode(non-addressable %T)", v.Interface())
}
return marshalBinaryValue(e, v.Addr())
}
func marshalBinaryValue(e *Encoder, v reflect.Value) error {
if nilable(v) && v.IsNil() {
return e.EncodeNil()
}
marshaler := v.Interface().(encoding.BinaryMarshaler)
data, err := marshaler.MarshalBinary()
if err != nil {
return err
}
return e.EncodeBytes(data)
}
|
