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1//===--- StringViewExtras.h -------------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// There are two copies of this file in the source tree. The one under10// libcxxabi is the original and the one under llvm is the copy. Use11// cp-to-llvm.sh to update the copy. See README.txt for more details.12//13//===----------------------------------------------------------------------===//14 15#ifndef DEMANGLE_STRINGVIEW_H16#define DEMANGLE_STRINGVIEW_H17 18#include "DemangleConfig.h"19 20#include <string_view>21 22DEMANGLE_NAMESPACE_BEGIN23 24inline bool starts_with(std::string_view self, char C) noexcept {25 return !self.empty() && *self.begin() == C;26}27 28inline bool starts_with(std::string_view haystack,29 std::string_view needle) noexcept {30 if (needle.size() > haystack.size())31 return false;32 haystack.remove_suffix(haystack.size() - needle.size());33 return haystack == needle;34}35 36DEMANGLE_NAMESPACE_END37 38#endif39