| 1 | //===--- StringViewExtras.h -------------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // There are two copies of this file in the source tree. The one under |
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| 10 | // libcxxabi is the original and the one under llvm is the copy. Use |
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| 11 | // cp-to-llvm.sh to update the copy. See README.txt for more details. |
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| 12 | // |
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| 13 | //===----------------------------------------------------------------------===// |
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| 14 | |
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| 15 | #ifndef DEMANGLE_STRINGVIEW_H |
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| 16 | #define DEMANGLE_STRINGVIEW_H |
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| 17 | |
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| 18 | #include "DemangleConfig.h" |
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| 19 | |
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| 20 | #include <string_view> |
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| 21 | |
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| 22 | DEMANGLE_NAMESPACE_BEGIN |
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| 23 | |
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| 24 | inline bool starts_with(std::string_view self, char C) noexcept { |
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| 25 | return !self.empty() && *self.begin() == C; |
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| 26 | } |
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| 27 | |
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| 28 | inline bool starts_with(std::string_view haystack, |
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| 29 | std::string_view needle) noexcept { |
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| 30 | if (needle.size() > haystack.size()) |
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| 31 | return false; |
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| 32 | haystack.remove_suffix(n: haystack.size() - needle.size()); |
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| 33 | return haystack == needle; |
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| 34 | } |
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| 35 | |
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| 36 | DEMANGLE_NAMESPACE_END |
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| 37 | |
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| 38 | #endif |
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| 39 | |
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