d2e8fb3318
Looks for duplicate includes and removes them. Every time an include directive is processed, check a vector of filenames to see if the included file has already been included. If so, it issues a warning and a replacement to remove the entire line containing the duplicated include directive. When a macro is defined or undefined, the vector of filenames is cleared. This enables including the same file multiple times, but getting different expansions based on the set of active macros at the time of inclusion. For example: #undef NDEBUG #include "assertion.h" // ...code with assertions enabled #define NDEBUG #include "assertion.h" // ...code with assertions disabled Since macros are redefined between the inclusion of assertion.h, they are not flagged as redundant. Differential Revision: https://reviews.llvm.org/D7982
36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
//===--- DuplicateIncludeCheck.h - clang-tidy -------------------*- C++ -*-===//
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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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#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_DUPLICATE_INCLUDE_CHECK_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_DUPLICATE_INCLUDE_CHECK_H
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#include "../ClangTidyCheck.h"
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namespace clang {
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namespace tidy {
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namespace readability {
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/// \brief Find and remove duplicate #include directives.
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///
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/// Only consecutive include directives without any other preprocessor
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/// directives between them are analyzed.
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class DuplicateIncludeCheck : public ClangTidyCheck {
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public:
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DuplicateIncludeCheck(StringRef Name, ClangTidyContext *Context)
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: ClangTidyCheck(Name, Context) {}
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void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP,
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Preprocessor *ModuleExpanderPP) override;
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};
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} // namespace readability
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} // namespace tidy
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} // namespace clang
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#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_DUPLICATE_INCLUDE_CHECK_H
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