forked from OSchip/llvm-project
67 lines
2.4 KiB
C++
67 lines
2.4 KiB
C++
//===--- HeaderGuardCheck.cpp - clang-tidy --------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "HeaderGuardCheck.h"
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#include "clang/Tooling/Tooling.h"
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namespace clang {
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namespace tidy {
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namespace llvm_check {
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LLVMHeaderGuardCheck::LLVMHeaderGuardCheck(StringRef Name,
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ClangTidyContext *Context)
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: HeaderGuardCheck(Name, Context) {}
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std::string LLVMHeaderGuardCheck::getHeaderGuard(StringRef Filename,
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StringRef OldGuard) {
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std::string Guard = tooling::getAbsolutePath(Filename);
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// Sanitize the path. There are some rules for compatibility with the historic
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// style in include/llvm and include/clang which we want to preserve.
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// We don't want _INCLUDE_ in our guards.
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size_t PosInclude = Guard.rfind("include/");
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if (PosInclude != StringRef::npos)
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Guard = Guard.substr(PosInclude + std::strlen("include/"));
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// For clang we drop the _TOOLS_.
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size_t PosToolsClang = Guard.rfind("tools/clang/");
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if (PosToolsClang != StringRef::npos)
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Guard = Guard.substr(PosToolsClang + std::strlen("tools/"));
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// Unlike LLVM svn, LLVM git monorepo is named llvm-project, so we replace
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// "/llvm-project/" with the cannonical "/llvm/".
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const static StringRef LLVMProject = "/llvm-project/";
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size_t PosLLVMProject = Guard.rfind(std::string(LLVMProject));
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if (PosLLVMProject != StringRef::npos)
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Guard = Guard.replace(PosLLVMProject, LLVMProject.size(), "/llvm/");
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// The remainder is LLVM_FULL_PATH_TO_HEADER_H
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size_t PosLLVM = Guard.rfind("llvm/");
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if (PosLLVM != StringRef::npos)
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Guard = Guard.substr(PosLLVM);
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std::replace(Guard.begin(), Guard.end(), '/', '_');
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std::replace(Guard.begin(), Guard.end(), '.', '_');
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std::replace(Guard.begin(), Guard.end(), '-', '_');
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// The prevalent style in clang is LLVM_CLANG_FOO_BAR_H
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if (StringRef(Guard).startswith("clang"))
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Guard = "LLVM_" + Guard;
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// The prevalent style in flang is FORTRAN_FOO_BAR_H
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if (StringRef(Guard).startswith("flang"))
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Guard = "FORTRAN" + Guard.substr(sizeof("flang") - 1);
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return StringRef(Guard).upper();
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}
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} // namespace llvm_check
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} // namespace tidy
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} // namespace clang
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