llvm/Demangle/StringViewExtras.h

0001 //===--- StringViewExtras.h ----------*- mode:c++;eval:(read-only-mode) -*-===//
0002 //       Do not edit! See README.txt.
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008 //
0009 // There are two copies of this file in the source tree.  The one under
0010 // libcxxabi is the original and the one under llvm is the copy.  Use
0011 // cp-to-llvm.sh to update the copy.  See README.txt for more details.
0012 //
0013 //===----------------------------------------------------------------------===//
0014
0015 #ifndef DEMANGLE_STRINGVIEW_H
0016 #define DEMANGLE_STRINGVIEW_H
0017
0018 #include "DemangleConfig.h"
0019
0020 #include <string_view>
0021
0022 DEMANGLE_NAMESPACE_BEGIN
0023
0024 inline bool starts_with(std::string_view self, char C) noexcept {
0025   return !self.empty() && *self.begin() == C;
0026 }
0027
0028 inline bool starts_with(std::string_view haystack,
0029                         std::string_view needle) noexcept {
0030   if (needle.size() > haystack.size())
0031     return false;
0032   haystack.remove_suffix(haystack.size() - needle.size());
0033   return haystack == needle;
0034 }
0035
0036 DEMANGLE_NAMESPACE_END
0037
0038 #endif