6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
//===--- NonConstParameterCheck.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_NON_CONST_PARAMETER_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_NON_CONST_PARAMETER_H
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#include "../ClangTidyCheck.h"
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namespace clang::tidy::readability {
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/// Warn when a pointer function parameter can be const.
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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/readability/non-const-parameter.html
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class NonConstParameterCheck : public ClangTidyCheck {
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public:
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NonConstParameterCheck(StringRef Name, ClangTidyContext *Context)
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: ClangTidyCheck(Name, Context) {}
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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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void onEndOfTranslationUnit() override;
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std::optional<TraversalKind> getCheckTraversalKind() const override {
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return TK_IgnoreUnlessSpelledInSource;
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}
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private:
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/// Parameter info.
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struct ParmInfo {
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/// Is function parameter referenced?
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bool IsReferenced;
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/// Can function parameter be const?
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bool CanBeConst;
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};
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/// Track all nonconst integer/float parameters.
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std::map<const ParmVarDecl *, ParmInfo> Parameters;
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/// Add function parameter.
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void addParm(const ParmVarDecl *Parm);
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/// Set IsReferenced.
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void setReferenced(const DeclRefExpr *Ref);
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/// Set CanNotBeConst.
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/// Visits sub expressions recursively. If a DeclRefExpr is found
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/// and CanNotBeConst is true the Parameter is marked as not-const.
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/// The CanNotBeConst is updated as sub expressions are visited.
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void markCanNotBeConst(const Expr *E, bool CanNotBeConst);
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/// Diagnose non const parameters.
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void diagnoseNonConstParameters();
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};
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} // namespace clang::tidy::readability
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#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_NON_CONST_PARAMETER_H
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