diff options
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/impl/pointer_reflect.go')
-rw-r--r-- | vendor/google.golang.org/protobuf/internal/impl/pointer_reflect.go | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/impl/pointer_reflect.go b/vendor/google.golang.org/protobuf/internal/impl/pointer_reflect.go deleted file mode 100644 index da685e8a2..000000000 --- a/vendor/google.golang.org/protobuf/internal/impl/pointer_reflect.go +++ /dev/null @@ -1,215 +0,0 @@ -// 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 any - -// 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 any) 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) any { - 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 growSlice(p pointer, addCap int) { - // TODO: Once we only support Go 1.20 and newer, use reflect.Grow. - in := p.v.Elem() - out := reflect.MakeSlice(in.Type(), in.Len(), in.Len()+addCap) - reflect.Copy(out, in) - p.v.Elem().Set(out) -} - -func (p pointer) growBoolSlice(addCap int) { - growSlice(p, addCap) -} - -func (p pointer) growInt32Slice(addCap int) { - growSlice(p, addCap) -} - -func (p pointer) growUint32Slice(addCap int) { - growSlice(p, addCap) -} - -func (p pointer) growInt64Slice(addCap int) { - growSlice(p, addCap) -} - -func (p pointer) growUint64Slice(addCap int) { - growSlice(p, addCap) -} - -func (p pointer) growFloat64Slice(addCap int) { - growSlice(p, addCap) -} - -func (p pointer) growFloat32Slice(addCap int) { - growSlice(p, addCap) -} - -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 -} |