blob: aa33e74fa462a46b55e782c2ff6280263388c9a4 (
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
|
// Copyright 2020-2024 Buf Technologies, 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.
//go:build !appengine && !gopherjs && !purego
// +build !appengine,!gopherjs,!purego
// NB: other environments where unsafe is inappropriate should use "purego" build tag
// https://github.com/golang/go/issues/23172
package linker
import (
"reflect"
"unsafe"
"google.golang.org/protobuf/reflect/protoreflect"
)
var pathElementType = reflect.TypeOf(protoreflect.SourcePath{}).Elem()
func pathKey(p protoreflect.SourcePath) interface{} {
if p == nil {
// Reflection code below doesn't work with nil slices
return [0]int32{}
}
hdr := (*reflect.SliceHeader)(unsafe.Pointer(reflect.ValueOf(&p).Pointer()))
array := reflect.NewAt(reflect.ArrayOf(hdr.Len, pathElementType), unsafe.Pointer(hdr.Data))
return array.Elem().Interface()
}
|
