clang-tools
15.0.0git
llvm-project
clang-tools-extra
clang-tidy
performance
UnnecessaryValueParamCheck.h
Go to the documentation of this file.
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//===--- UnnecessaryValueParamCheck.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_PERFORMANCE_UNNECESSARY_VALUE_PARAM_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_UNNECESSARY_VALUE_PARAM_H
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#include "../ClangTidyCheck.h"
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#include "../utils/IncludeInserter.h"
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#include "clang/Analysis/Analyses/ExprMutationAnalyzer.h"
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namespace
clang
{
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namespace
tidy {
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namespace
performance {
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/// A check that flags value parameters of expensive to copy types that
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/// can safely be converted to const references.
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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/performance-unnecessary-value-param.html
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class
UnnecessaryValueParamCheck
:
public
ClangTidyCheck
{
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public
:
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UnnecessaryValueParamCheck
(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
registerMatchers
(ast_matchers::MatchFinder *Finder)
override
;
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void
check
(
const
ast_matchers::MatchFinder::MatchResult &Result)
override
;
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void
registerPPCallbacks
(
const
SourceManager &SM, Preprocessor *
PP
,
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Preprocessor *ModuleExpanderPP)
override
;
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void
storeOptions
(
ClangTidyOptions::OptionMap
&Opts)
override
;
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void
onEndOfTranslationUnit
()
override
;
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private
:
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void
handleMoveFix(
const
ParmVarDecl &Var,
const
DeclRefExpr &CopyArgument,
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const
ASTContext &Context);
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llvm::DenseMap<const FunctionDecl *, FunctionParmMutationAnalyzer>
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MutationAnalyzers;
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utils::IncludeInserter
Inserter;
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const
std::vector<StringRef> AllowedTypes;
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};
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}
// namespace performance
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}
// namespace tidy
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}
// namespace clang
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#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_UNNECESSARY_VALUE_PARAM_H
clang::tidy::ClangTidyOptions::OptionMap
llvm::StringMap< ClangTidyValue > OptionMap
Definition:
ClangTidyOptions.h:115
clang::tidy::utils::IncludeInserter
Produces fixes to insert specified includes to source files, if not yet present.
Definition:
IncludeInserter.h:55
clang::tidy::performance::UnnecessaryValueParamCheck::registerMatchers
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
Definition:
UnnecessaryValueParamCheck.cpp:77
clang::tidy::ClangTidyCheck
Base class for all clang-tidy checks.
Definition:
ClangTidyCheck.h:53
clang::tidy::performance::UnnecessaryValueParamCheck::UnnecessaryValueParamCheck
UnnecessaryValueParamCheck(StringRef Name, ClangTidyContext *Context)
Definition:
UnnecessaryValueParamCheck.cpp:68
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:177
clang::tidy::performance::UnnecessaryValueParamCheck::isLanguageVersionSupported
bool isLanguageVersionSupported(const LangOptions &LangOpts) const override
Override this to disable registering matchers and PP callbacks if an invalid language version is bein...
Definition:
UnnecessaryValueParamCheck.h:28
clang::tidy::performance::UnnecessaryValueParamCheck::registerPPCallbacks
void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP, Preprocessor *ModuleExpanderPP) override
Override this to register PPCallbacks in the preprocessor.
Definition:
UnnecessaryValueParamCheck.cpp:172
clang::tidy::ClangTidyContext
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
Definition:
ClangTidyDiagnosticConsumer.h:66
Name
Token Name
Definition:
MacroToEnumCheck.cpp:89
clang::tidy::performance::UnnecessaryValueParamCheck::onEndOfTranslationUnit
void onEndOfTranslationUnit() override
Definition:
UnnecessaryValueParamCheck.cpp:184
clang::tidy::bugprone::PP
static Preprocessor * PP
Definition:
BadSignalToKillThreadCheck.cpp:29
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:25
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition:
ApplyReplacements.h:27
LangOpts
const LangOptions * LangOpts
Definition:
ExtractFunction.cpp:366
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:95
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