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
26 class UnnecessaryValueParamCheck : public ClangTidyCheck {
27 public:
28 UnnecessaryValueParamCheck(StringRef Name, ClangTidyContext *Context);
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
clang::tidy::utils::IncludeSorter::IncludeStyle
IncludeStyle
Supported include styles.
Definition: IncludeSorter.h:27
clang::tidy::performance::UnnecessaryValueParamCheck::storeOptions
void storeOptions(ClangTidyOptions::OptionMap &Opts) override
Should store all options supported by this check with their current values or default values for opti...
Definition: UnnecessaryValueParamCheck.cpp:178
clang::tidy::ClangTidyCheck
Base class for all clang-tidy checks.
Definition: ClangTidy.h:127
clang::tidy::performance::UnnecessaryValueParamCheck::onEndOfTranslationUnit
void onEndOfTranslationUnit() override
Definition: UnnecessaryValueParamCheck.cpp:186
clang::tidy::performance::UnnecessaryValueParamCheck::UnnecessaryValueParamCheck
UnnecessaryValueParamCheck(StringRef Name, ClangTidyContext *Context)
Definition: UnnecessaryValueParamCheck.cpp:68
clang::tidy::performance::UnnecessaryValueParamCheck
A check that flags value parameters of expensive to copy types that can safely be converted to const ...
Definition: UnnecessaryValueParamCheck.h:26
Name
static constexpr llvm::StringLiteral Name
Definition: UppercaseLiteralSuffixCheck.cpp:28
clang::tidy::ClangTidyOptions::OptionMap
std::map< std::string, std::string > OptionMap
Definition: ClangTidyOptions.h:98
Result
llvm::Optional< llvm::Expected< tooling::AtomicChanges > > Result
Definition: ClangdServer.cpp:60
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ChangeNamespace.cpp:18
clang::tidy::performance::UnnecessaryValueParamCheck::registerPPCallbacks
void registerPPCallbacks(CompilerInstance &Compiler) override
Override this to register PPCallbacks with Compiler.
Definition: UnnecessaryValueParamCheck.cpp:171
clang::tidy::ClangTidyContext
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
Definition: ClangTidyDiagnosticConsumer.h:100
clang::tidy::performance::UnnecessaryValueParamCheck::check
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
Definition: UnnecessaryValueParamCheck.cpp:96
clang::tidy::performance::UnnecessaryValueParamCheck::registerMatchers
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
Definition: UnnecessaryValueParamCheck.cpp:76