mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-05 10:02:47 +00:00
b56dae8120
* update all but bun libraries Signed-off-by: kim <grufwub@gmail.com> * remove my personal build script changes Signed-off-by: kim <grufwub@gmail.com>
180 lines
6.3 KiB
Go
180 lines
6.3 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
//go:build purego || appengine
|
|
// +build purego appengine
|
|
|
|
package impl
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
"sync"
|
|
)
|
|
|
|
const UnsafeEnabled = false
|
|
|
|
// Pointer is an opaque pointer type.
|
|
type Pointer interface{}
|
|
|
|
// offset represents the offset to a struct field, accessible from a pointer.
|
|
// The offset is the field index into a struct.
|
|
type offset struct {
|
|
index int
|
|
export exporter
|
|
}
|
|
|
|
// offsetOf returns a field offset for the struct field.
|
|
func offsetOf(f reflect.StructField, x exporter) offset {
|
|
if len(f.Index) != 1 {
|
|
panic("embedded structs are not supported")
|
|
}
|
|
if f.PkgPath == "" {
|
|
return offset{index: f.Index[0]} // field is already exported
|
|
}
|
|
if x == nil {
|
|
panic("exporter must be provided for unexported field")
|
|
}
|
|
return offset{index: f.Index[0], export: x}
|
|
}
|
|
|
|
// IsValid reports whether the offset is valid.
|
|
func (f offset) IsValid() bool { return f.index >= 0 }
|
|
|
|
// invalidOffset is an invalid field offset.
|
|
var invalidOffset = offset{index: -1}
|
|
|
|
// zeroOffset is a noop when calling pointer.Apply.
|
|
var zeroOffset = offset{index: 0}
|
|
|
|
// pointer is an abstract representation of a pointer to a struct or field.
|
|
type pointer struct{ v reflect.Value }
|
|
|
|
// pointerOf returns p as a pointer.
|
|
func pointerOf(p Pointer) pointer {
|
|
return pointerOfIface(p)
|
|
}
|
|
|
|
// pointerOfValue returns v as a pointer.
|
|
func pointerOfValue(v reflect.Value) pointer {
|
|
return pointer{v: v}
|
|
}
|
|
|
|
// pointerOfIface returns the pointer portion of an interface.
|
|
func pointerOfIface(v interface{}) pointer {
|
|
return pointer{v: reflect.ValueOf(v)}
|
|
}
|
|
|
|
// IsNil reports whether the pointer is nil.
|
|
func (p pointer) IsNil() bool {
|
|
return p.v.IsNil()
|
|
}
|
|
|
|
// Apply adds an offset to the pointer to derive a new pointer
|
|
// to a specified field. The current pointer must be pointing at a struct.
|
|
func (p pointer) Apply(f offset) pointer {
|
|
if f.export != nil {
|
|
if v := reflect.ValueOf(f.export(p.v.Interface(), f.index)); v.IsValid() {
|
|
return pointer{v: v}
|
|
}
|
|
}
|
|
return pointer{v: p.v.Elem().Field(f.index).Addr()}
|
|
}
|
|
|
|
// AsValueOf treats p as a pointer to an object of type t and returns the value.
|
|
// It is equivalent to reflect.ValueOf(p.AsIfaceOf(t))
|
|
func (p pointer) AsValueOf(t reflect.Type) reflect.Value {
|
|
if got := p.v.Type().Elem(); got != t {
|
|
panic(fmt.Sprintf("invalid type: got %v, want %v", got, t))
|
|
}
|
|
return p.v
|
|
}
|
|
|
|
// AsIfaceOf treats p as a pointer to an object of type t and returns the value.
|
|
// It is equivalent to p.AsValueOf(t).Interface()
|
|
func (p pointer) AsIfaceOf(t reflect.Type) interface{} {
|
|
return p.AsValueOf(t).Interface()
|
|
}
|
|
|
|
func (p pointer) Bool() *bool { return p.v.Interface().(*bool) }
|
|
func (p pointer) BoolPtr() **bool { return p.v.Interface().(**bool) }
|
|
func (p pointer) BoolSlice() *[]bool { return p.v.Interface().(*[]bool) }
|
|
func (p pointer) Int32() *int32 { return p.v.Interface().(*int32) }
|
|
func (p pointer) Int32Ptr() **int32 { return p.v.Interface().(**int32) }
|
|
func (p pointer) Int32Slice() *[]int32 { return p.v.Interface().(*[]int32) }
|
|
func (p pointer) Int64() *int64 { return p.v.Interface().(*int64) }
|
|
func (p pointer) Int64Ptr() **int64 { return p.v.Interface().(**int64) }
|
|
func (p pointer) Int64Slice() *[]int64 { return p.v.Interface().(*[]int64) }
|
|
func (p pointer) Uint32() *uint32 { return p.v.Interface().(*uint32) }
|
|
func (p pointer) Uint32Ptr() **uint32 { return p.v.Interface().(**uint32) }
|
|
func (p pointer) Uint32Slice() *[]uint32 { return p.v.Interface().(*[]uint32) }
|
|
func (p pointer) Uint64() *uint64 { return p.v.Interface().(*uint64) }
|
|
func (p pointer) Uint64Ptr() **uint64 { return p.v.Interface().(**uint64) }
|
|
func (p pointer) Uint64Slice() *[]uint64 { return p.v.Interface().(*[]uint64) }
|
|
func (p pointer) Float32() *float32 { return p.v.Interface().(*float32) }
|
|
func (p pointer) Float32Ptr() **float32 { return p.v.Interface().(**float32) }
|
|
func (p pointer) Float32Slice() *[]float32 { return p.v.Interface().(*[]float32) }
|
|
func (p pointer) Float64() *float64 { return p.v.Interface().(*float64) }
|
|
func (p pointer) Float64Ptr() **float64 { return p.v.Interface().(**float64) }
|
|
func (p pointer) Float64Slice() *[]float64 { return p.v.Interface().(*[]float64) }
|
|
func (p pointer) String() *string { return p.v.Interface().(*string) }
|
|
func (p pointer) StringPtr() **string { return p.v.Interface().(**string) }
|
|
func (p pointer) StringSlice() *[]string { return p.v.Interface().(*[]string) }
|
|
func (p pointer) Bytes() *[]byte { return p.v.Interface().(*[]byte) }
|
|
func (p pointer) BytesPtr() **[]byte { return p.v.Interface().(**[]byte) }
|
|
func (p pointer) BytesSlice() *[][]byte { return p.v.Interface().(*[][]byte) }
|
|
func (p pointer) WeakFields() *weakFields { return (*weakFields)(p.v.Interface().(*WeakFields)) }
|
|
func (p pointer) Extensions() *map[int32]ExtensionField {
|
|
return p.v.Interface().(*map[int32]ExtensionField)
|
|
}
|
|
|
|
func (p pointer) Elem() pointer {
|
|
return pointer{v: p.v.Elem()}
|
|
}
|
|
|
|
// PointerSlice copies []*T from p as a new []pointer.
|
|
// This behavior differs from the implementation in pointer_unsafe.go.
|
|
func (p pointer) PointerSlice() []pointer {
|
|
// TODO: reconsider this
|
|
if p.v.IsNil() {
|
|
return nil
|
|
}
|
|
n := p.v.Elem().Len()
|
|
s := make([]pointer, n)
|
|
for i := 0; i < n; i++ {
|
|
s[i] = pointer{v: p.v.Elem().Index(i)}
|
|
}
|
|
return s
|
|
}
|
|
|
|
// AppendPointerSlice appends v to p, which must be a []*T.
|
|
func (p pointer) AppendPointerSlice(v pointer) {
|
|
sp := p.v.Elem()
|
|
sp.Set(reflect.Append(sp, v.v))
|
|
}
|
|
|
|
// SetPointer sets *p to v.
|
|
func (p pointer) SetPointer(v pointer) {
|
|
p.v.Elem().Set(v.v)
|
|
}
|
|
|
|
func (Export) MessageStateOf(p Pointer) *messageState { panic("not supported") }
|
|
func (ms *messageState) pointer() pointer { panic("not supported") }
|
|
func (ms *messageState) messageInfo() *MessageInfo { panic("not supported") }
|
|
func (ms *messageState) LoadMessageInfo() *MessageInfo { panic("not supported") }
|
|
func (ms *messageState) StoreMessageInfo(mi *MessageInfo) { panic("not supported") }
|
|
|
|
type atomicNilMessage struct {
|
|
once sync.Once
|
|
m messageReflectWrapper
|
|
}
|
|
|
|
func (m *atomicNilMessage) Init(mi *MessageInfo) *messageReflectWrapper {
|
|
m.once.Do(func() {
|
|
m.m.p = pointerOfIface(reflect.Zero(mi.GoReflectType).Interface())
|
|
m.m.mi = mi
|
|
})
|
|
return &m.m
|
|
}
|