mirror of
https://codeberg.org/superseriousbusiness/gotosocial.git
synced 2024-12-25 02:18:16 +03:00
201 lines
3.9 KiB
Go
201 lines
3.9 KiB
Go
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/*
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* Copyright 2021 ByteDance Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package rt
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import (
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`reflect`
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`unsafe`
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)
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var (
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reflectRtypeItab = findReflectRtypeItab()
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)
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const (
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F_direct = 1 << 5
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F_kind_mask = (1 << 5) - 1
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)
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type GoType struct {
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Size uintptr
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PtrData uintptr
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Hash uint32
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Flags uint8
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Align uint8
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FieldAlign uint8
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KindFlags uint8
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Traits unsafe.Pointer
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GCData *byte
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Str int32
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PtrToSelf int32
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}
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func (self *GoType) Kind() reflect.Kind {
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return reflect.Kind(self.KindFlags & F_kind_mask)
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}
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func (self *GoType) Pack() (t reflect.Type) {
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(*GoIface)(unsafe.Pointer(&t)).Itab = reflectRtypeItab
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(*GoIface)(unsafe.Pointer(&t)).Value = unsafe.Pointer(self)
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return
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}
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func (self *GoType) String() string {
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return self.Pack().String()
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}
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func (self *GoType) Indirect() bool {
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return self.KindFlags & F_direct == 0
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}
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type GoMap struct {
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Count int
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Flags uint8
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B uint8
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Overflow uint16
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Hash0 uint32
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Buckets unsafe.Pointer
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OldBuckets unsafe.Pointer
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Evacuate uintptr
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Extra unsafe.Pointer
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}
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type GoMapIterator struct {
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K unsafe.Pointer
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V unsafe.Pointer
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T *GoMapType
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H *GoMap
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Buckets unsafe.Pointer
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Bptr *unsafe.Pointer
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Overflow *[]unsafe.Pointer
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OldOverflow *[]unsafe.Pointer
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StartBucket uintptr
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Offset uint8
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Wrapped bool
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B uint8
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I uint8
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Bucket uintptr
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CheckBucket uintptr
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}
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type GoItab struct {
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it unsafe.Pointer
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Vt *GoType
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hv uint32
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_ [4]byte
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fn [1]uintptr
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}
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type GoIface struct {
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Itab *GoItab
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Value unsafe.Pointer
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}
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type GoEface struct {
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Type *GoType
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Value unsafe.Pointer
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}
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func (self GoEface) Pack() (v interface{}) {
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*(*GoEface)(unsafe.Pointer(&v)) = self
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return
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}
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type GoPtrType struct {
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GoType
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Elem *GoType
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}
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type GoMapType struct {
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GoType
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Key *GoType
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Elem *GoType
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Bucket *GoType
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Hasher func(unsafe.Pointer, uintptr) uintptr
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KeySize uint8
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ElemSize uint8
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BucketSize uint16
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Flags uint32
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}
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func (self *GoMapType) IndirectElem() bool {
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return self.Flags & 2 != 0
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}
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type GoStructType struct {
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GoType
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Pkg *byte
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Fields []GoStructField
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}
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type GoStructField struct {
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Name *byte
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Type *GoType
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OffEmbed uintptr
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}
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type GoInterfaceType struct {
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GoType
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PkgPath *byte
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Methods []GoInterfaceMethod
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}
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type GoInterfaceMethod struct {
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Name int32
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Type int32
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}
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type GoSlice struct {
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Ptr unsafe.Pointer
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Len int
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Cap int
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}
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type GoString struct {
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Ptr unsafe.Pointer
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Len int
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}
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func PtrElem(t *GoType) *GoType {
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return (*GoPtrType)(unsafe.Pointer(t)).Elem
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}
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func MapType(t *GoType) *GoMapType {
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return (*GoMapType)(unsafe.Pointer(t))
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}
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func IfaceType(t *GoType) *GoInterfaceType {
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return (*GoInterfaceType)(unsafe.Pointer(t))
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}
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func UnpackType(t reflect.Type) *GoType {
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return (*GoType)((*GoIface)(unsafe.Pointer(&t)).Value)
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}
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func UnpackEface(v interface{}) GoEface {
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return *(*GoEface)(unsafe.Pointer(&v))
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}
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func UnpackIface(v interface{}) GoIface {
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return *(*GoIface)(unsafe.Pointer(&v))
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}
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func findReflectRtypeItab() *GoItab {
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v := reflect.TypeOf(struct{}{})
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return (*GoIface)(unsafe.Pointer(&v)).Itab
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}
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