blob: 2b2757f5b51dbd148309cd372fa30b2db3bb9e9b (
plain)
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
211
212
213
|
/*
* Copyright 2021 ByteDance Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package rt
import (
`reflect`
`unsafe`
)
var (
reflectRtypeItab = findReflectRtypeItab()
)
// GoType.KindFlags const
const (
F_direct = 1 << 5
F_kind_mask = (1 << 5) - 1
)
// GoType.Flags const
const (
tflagUncommon uint8 = 1 << 0
tflagExtraStar uint8 = 1 << 1
tflagNamed uint8 = 1 << 2
tflagRegularMemory uint8 = 1 << 3
)
type GoType struct {
Size uintptr
PtrData uintptr
Hash uint32
Flags uint8
Align uint8
FieldAlign uint8
KindFlags uint8
Traits unsafe.Pointer
GCData *byte
Str int32
PtrToSelf int32
}
func (self *GoType) IsNamed() bool {
return (self.Flags & tflagNamed) != 0
}
func (self *GoType) Kind() reflect.Kind {
return reflect.Kind(self.KindFlags & F_kind_mask)
}
func (self *GoType) Pack() (t reflect.Type) {
(*GoIface)(unsafe.Pointer(&t)).Itab = reflectRtypeItab
(*GoIface)(unsafe.Pointer(&t)).Value = unsafe.Pointer(self)
return
}
func (self *GoType) String() string {
return self.Pack().String()
}
func (self *GoType) Indirect() bool {
return self.KindFlags & F_direct == 0
}
type GoMap struct {
Count int
Flags uint8
B uint8
Overflow uint16
Hash0 uint32
Buckets unsafe.Pointer
OldBuckets unsafe.Pointer
Evacuate uintptr
Extra unsafe.Pointer
}
type GoMapIterator struct {
K unsafe.Pointer
V unsafe.Pointer
T *GoMapType
H *GoMap
Buckets unsafe.Pointer
Bptr *unsafe.Pointer
Overflow *[]unsafe.Pointer
OldOverflow *[]unsafe.Pointer
StartBucket uintptr
Offset uint8
Wrapped bool
B uint8
I uint8
Bucket uintptr
CheckBucket uintptr
}
type GoItab struct {
it unsafe.Pointer
Vt *GoType
hv uint32
_ [4]byte
fn [1]uintptr
}
type GoIface struct {
Itab *GoItab
Value unsafe.Pointer
}
type GoEface struct {
Type *GoType
Value unsafe.Pointer
}
func (self GoEface) Pack() (v interface{}) {
*(*GoEface)(unsafe.Pointer(&v)) = self
return
}
type GoPtrType struct {
GoType
Elem *GoType
}
type GoMapType struct {
GoType
Key *GoType
Elem *GoType
Bucket *GoType
Hasher func(unsafe.Pointer, uintptr) uintptr
KeySize uint8
ElemSize uint8
BucketSize uint16
Flags uint32
}
func (self *GoMapType) IndirectElem() bool {
return self.Flags & 2 != 0
}
type GoStructType struct {
GoType
Pkg *byte
Fields []GoStructField
}
type GoStructField struct {
Name *byte
Type *GoType
OffEmbed uintptr
}
type GoInterfaceType struct {
GoType
PkgPath *byte
Methods []GoInterfaceMethod
}
type GoInterfaceMethod struct {
Name int32
Type int32
}
type GoSlice struct {
Ptr unsafe.Pointer
Len int
Cap int
}
type GoString struct {
Ptr unsafe.Pointer
Len int
}
func PtrElem(t *GoType) *GoType {
return (*GoPtrType)(unsafe.Pointer(t)).Elem
}
func MapType(t *GoType) *GoMapType {
return (*GoMapType)(unsafe.Pointer(t))
}
func IfaceType(t *GoType) *GoInterfaceType {
return (*GoInterfaceType)(unsafe.Pointer(t))
}
func UnpackType(t reflect.Type) *GoType {
return (*GoType)((*GoIface)(unsafe.Pointer(&t)).Value)
}
func UnpackEface(v interface{}) GoEface {
return *(*GoEface)(unsafe.Pointer(&v))
}
func UnpackIface(v interface{}) GoIface {
return *(*GoIface)(unsafe.Pointer(&v))
}
func findReflectRtypeItab() *GoItab {
v := reflect.TypeOf(struct{}{})
return (*GoIface)(unsafe.Pointer(&v)).Itab
}
|
