clang-tools  8.0.0
UnnecessaryValueParamCheck.h
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1 //===--- UnnecessaryValueParamCheck.h - clang-tidy---------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_UNNECESSARY_VALUE_PARAM_H
11 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_UNNECESSARY_VALUE_PARAM_H
12 
13 #include "../ClangTidy.h"
14 #include "../utils/IncludeInserter.h"
15 #include "clang/Analysis/Analyses/ExprMutationAnalyzer.h"
16 
17 namespace clang {
18 namespace tidy {
19 namespace performance {
20 
21 /// \brief A check that flags value parameters of expensive to copy types that
22 /// can safely be converted to const references.
23 ///
24 /// For the user-facing documentation see:
25 /// http://clang.llvm.org/extra/clang-tidy/checks/performance-unnecessary-value-param.html
27 public:
29  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
30  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
31  void registerPPCallbacks(CompilerInstance &Compiler) override;
32  void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
33  void onEndOfTranslationUnit() override;
34 
35 private:
36  void handleMoveFix(const ParmVarDecl &Var, const DeclRefExpr &CopyArgument,
37  const ASTContext &Context);
38 
39  llvm::DenseMap<const FunctionDecl *, FunctionParmMutationAnalyzer>
40  MutationAnalyzers;
41  std::unique_ptr<utils::IncludeInserter> Inserter;
42  const utils::IncludeSorter::IncludeStyle IncludeStyle;
43  const std::vector<std::string> AllowedTypes;
44 };
45 
46 } // namespace performance
47 } // namespace tidy
48 } // namespace clang
49 
50 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_UNNECESSARY_VALUE_PARAM_H
IncludeStyle
Supported include styles.
Definition: IncludeSorter.h:27
void storeOptions(ClangTidyOptions::OptionMap &Opts) override
Should store all options supported by this check with their current values or default values for opti...
Base class for all clang-tidy checks.
Definition: ClangTidy.h:127
UnnecessaryValueParamCheck(StringRef Name, ClangTidyContext *Context)
A check that flags value parameters of expensive to copy types that can safely be converted to const ...
static constexpr llvm::StringLiteral Name
std::map< std::string, std::string > OptionMap
llvm::Optional< llvm::Expected< tooling::AtomicChanges > > Result
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
void registerPPCallbacks(CompilerInstance &Compiler) override
Override this to register PPCallbacks with Compiler.
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.