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author | 2022-04-26 20:30:25 -0700 | |
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committer | 2023-01-31 15:16:42 +0100 | |
commit | 83b4c9ebc87d0fddf4e638f13e3af1483912e3a5 (patch) | |
tree | 47840b84c0fd3cb226eab2ecb3dbce0617163406 /vendor/google.golang.org/protobuf/internal/strs/strings_unsafe.go | |
parent | [chore] update URLs to forked source (diff) | |
download | gotosocial-83b4c9ebc87d0fddf4e638f13e3af1483912e3a5.tar.xz |
[chore] remove vendor
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/strs/strings_unsafe.go')
-rw-r--r-- | vendor/google.golang.org/protobuf/internal/strs/strings_unsafe.go | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/strs/strings_unsafe.go b/vendor/google.golang.org/protobuf/internal/strs/strings_unsafe.go deleted file mode 100644 index 56a8a4ed3..000000000 --- a/vendor/google.golang.org/protobuf/internal/strs/strings_unsafe.go +++ /dev/null @@ -1,95 +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 strs - -import ( - "unsafe" - - pref "google.golang.org/protobuf/reflect/protoreflect" -) - -type ( - stringHeader struct { - Data unsafe.Pointer - Len int - } - sliceHeader struct { - Data unsafe.Pointer - Len int - Cap int - } -) - -// 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) (s string) { - src := (*sliceHeader)(unsafe.Pointer(&b)) - dst := (*stringHeader)(unsafe.Pointer(&s)) - dst.Data = src.Data - dst.Len = src.Len - return s -} - -// 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) (b []byte) { - src := (*stringHeader)(unsafe.Pointer(&s)) - dst := (*sliceHeader)(unsafe.Pointer(&b)) - dst.Data = src.Data - dst.Len = src.Len - dst.Cap = src.Len - return b -} - -// 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 pref.FullName, name pref.Name) pref.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 pref.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, 2*(cap(sb.buf)+n)) -} - -func (sb *Builder) last(n int) string { - return UnsafeString(sb.buf[len(sb.buf)-n:]) -} |