forked from OSchip/llvm-project
56 lines
2.3 KiB
C++
56 lines
2.3 KiB
C++
//===--- ThrowByValueCatchByReferenceCheck.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_MISC_THROW_BY_VALUE_CATCH_BY_REFERENCE_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_THROW_BY_VALUE_CATCH_BY_REFERENCE_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 misc {
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///checks for locations that do not throw by value
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// or catch by reference.
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// The check is C++ only. It checks that all throw locations
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// throw by value and not by pointer. Additionally it
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// contains an option ("CheckThrowTemporaries", default value "true") that
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// checks that thrown objects are anonymous temporaries. It is also
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// acceptable for this check to throw string literals.
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// This test checks that exceptions are caught by reference
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// and not by value or pointer. It will not warn when catching
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// pointer to char, wchar_t, char16_t or char32_t. This is
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// due to not warning on throwing string literals.
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class ThrowByValueCatchByReferenceCheck : public ClangTidyCheck {
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public:
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ThrowByValueCatchByReferenceCheck(StringRef Name, ClangTidyContext *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 storeOptions(ClangTidyOptions::OptionMap &Opts) override;
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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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void diagnoseThrowLocations(const CXXThrowExpr *throwExpr);
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void diagnoseCatchLocations(const CXXCatchStmt *catchStmt,
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ASTContext &context);
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bool isFunctionParameter(const DeclRefExpr *declRefExpr);
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bool isCatchVariable(const DeclRefExpr *declRefExpr);
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bool isFunctionOrCatchVar(const DeclRefExpr *declRefExpr);
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const bool CheckAnonymousTemporaries;
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const bool WarnOnLargeObject;
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uint64_t MaxSize; // No `const` because we have to set it in two steps.
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};
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} // namespace misc
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} // namespace tidy
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} // namespace clang
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#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MISC_THROW_BY_VALUE_CATCH_BY_REFERENCE_H
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