forked from OSchip/llvm-project
68 lines
2.5 KiB
C++
68 lines
2.5 KiB
C++
//===--- VirtualNearMissCheck.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_BUGPRONE_VIRTUAL_NEAR_MISS_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_VIRTUAL_NEAR_MISS_H
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#include "../ClangTidyCheck.h"
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#include "llvm/ADT/DenseMap.h"
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namespace clang {
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namespace tidy {
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namespace bugprone {
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/// Checks for near miss of virtual methods.
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///
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/// For a method in a derived class, this check looks for virtual method with a
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/// very similar name and an identical signature defined in a base class.
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///
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/// For the user-facing documentation see:
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/// http://clang.llvm.org/extra/clang-tidy/checks/bugprone-virtual-near-miss.html
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class VirtualNearMissCheck : public ClangTidyCheck {
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public:
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VirtualNearMissCheck(StringRef Name, ClangTidyContext *Context)
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: ClangTidyCheck(Name, Context) {}
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bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
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return LangOpts.CPlusPlus;
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}
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void registerMatchers(ast_matchers::MatchFinder *Finder) override;
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void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
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private:
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/// Check if the given method is possible to be overridden by some other
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/// method. Operators and destructors are excluded.
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///
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/// Results are memoized in PossibleMap.
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bool isPossibleToBeOverridden(const CXXMethodDecl *BaseMD);
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/// Check if the given base method is overridden by some methods in the given
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/// derived class.
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///
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/// Results are memoized in OverriddenMap.
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bool isOverriddenByDerivedClass(const CXXMethodDecl *BaseMD,
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const CXXRecordDecl *DerivedRD);
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/// Key: the unique ID of a method.
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/// Value: whether the method is possible to be overridden.
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llvm::DenseMap<const CXXMethodDecl *, bool> PossibleMap;
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/// Key: <unique ID of base method, name of derived class>
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/// Value: whether the base method is overridden by some method in the derived
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/// class.
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llvm::DenseMap<std::pair<const CXXMethodDecl *, const CXXRecordDecl *>, bool>
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OverriddenMap;
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const unsigned EditDistanceThreshold = 1;
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};
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} // namespace bugprone
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} // namespace tidy
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} // namespace clang
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#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_VIRTUAL_NEAR_MISS_H
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