diff options
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/strs/strings_unsafe_go121.go')
-rw-r--r-- | vendor/google.golang.org/protobuf/internal/strs/strings_unsafe_go121.go | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/strs/strings_unsafe_go121.go b/vendor/google.golang.org/protobuf/internal/strs/strings_unsafe_go121.go deleted file mode 100644 index 1ffddf687..000000000 --- a/vendor/google.golang.org/protobuf/internal/strs/strings_unsafe_go121.go +++ /dev/null @@ -1,73 +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 go1.21 - -package strs - -import ( - "unsafe" - - "google.golang.org/protobuf/reflect/protoreflect" -) - -// UnsafeString returns an unsafe string reference of b. -// The caller must treat the input slice as immutable. -// -// WARNING: Use carefully. The returned result must not leak to the end user -// unless the input slice is provably immutable. -func UnsafeString(b []byte) string { - return unsafe.String(unsafe.SliceData(b), len(b)) -} - -// UnsafeBytes returns an unsafe bytes slice reference of s. -// The caller must treat returned slice as immutable. -// -// WARNING: Use carefully. The returned result must not leak to the end user. -func UnsafeBytes(s string) []byte { - return unsafe.Slice(unsafe.StringData(s), len(s)) -} - -// Builder builds a set of strings with shared lifetime. -// This differs from strings.Builder, which is for building a single string. -type Builder struct { - buf []byte -} - -// AppendFullName is equivalent to protoreflect.FullName.Append, -// but optimized for large batches where each name has a shared lifetime. -func (sb *Builder) AppendFullName(prefix protoreflect.FullName, name protoreflect.Name) protoreflect.FullName { - n := len(prefix) + len(".") + len(name) - if len(prefix) == 0 { - n -= len(".") - } - sb.grow(n) - sb.buf = append(sb.buf, prefix...) - sb.buf = append(sb.buf, '.') - sb.buf = append(sb.buf, name...) - return protoreflect.FullName(sb.last(n)) -} - -// MakeString is equivalent to string(b), but optimized for large batches -// with a shared lifetime. -func (sb *Builder) MakeString(b []byte) string { - sb.grow(len(b)) - sb.buf = append(sb.buf, b...) - return sb.last(len(b)) -} - -func (sb *Builder) grow(n int) { - if cap(sb.buf)-len(sb.buf) >= n { - return - } - - // Unlike strings.Builder, we do not need to copy over the contents - // of the old buffer since our builder provides no API for - // retrieving previously created strings. - sb.buf = make([]byte, 0, 2*(cap(sb.buf)+n)) -} - -func (sb *Builder) last(n int) string { - return UnsafeString(sb.buf[len(sb.buf)-n:]) -} |