clang-tools
11.0.0
clang-tools-extra
clang-tidy
performance
UnnecessaryCopyInitialization.h
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//===--- UnnecessaryCopyInitialization.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_COPY_INITIALIZATION_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_PERFORMANCE_UNNECESSARY_COPY_INITIALIZATION_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
performance {
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// The check detects local variable declarations that are copy initialized with
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// the const reference of a function call or the const reference of a method
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// call whose object is guaranteed to outlive the variable's scope and suggests
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// to use a const reference.
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//
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// The check currently only understands a subset of variables that are
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// guaranteed to outlive the const reference returned, namely: const variables,
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// const references, and const pointers to const.
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class
UnnecessaryCopyInitialization
:
public
ClangTidyCheck
{
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public
:
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UnnecessaryCopyInitialization
(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
storeOptions
(
ClangTidyOptions::OptionMap
&Opts)
override
;
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private
:
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void
handleCopyFromMethodReturn(
const
VarDecl &Var,
const
Stmt &BlockStmt,
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bool
IssueFix,
const
VarDecl *ObjectArg,
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ASTContext &Context);
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void
handleCopyFromLocalVar(
const
VarDecl &NewVar,
const
VarDecl &OldVar,
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const
Stmt &BlockStmt,
bool
IssueFix,
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ASTContext &Context);
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const
std::vector<std::string> 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_COPY_INITIALIZATION_H
clang::tidy::ClangTidyCheck
Base class for all clang-tidy checks.
Definition:
ClangTidyCheck.h:114
clang::tidy::performance::UnnecessaryCopyInitialization::check
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
Definition:
UnnecessaryCopyInitialization.cpp:92
clang::tidy::performance::UnnecessaryCopyInitialization
Definition:
UnnecessaryCopyInitialization.h:26
clang::tidy::ClangTidyContext
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
Definition:
ClangTidyDiagnosticConsumer.h:76
Name
static constexpr llvm::StringLiteral Name
Definition:
UppercaseLiteralSuffixCheck.cpp:27
clang::tidy::performance::UnnecessaryCopyInitialization::registerMatchers
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
Definition:
UnnecessaryCopyInitialization.cpp:43
clang::tidy::performance::UnnecessaryCopyInitialization::UnnecessaryCopyInitialization
UnnecessaryCopyInitialization(StringRef Name, ClangTidyContext *Context)
Definition:
UnnecessaryCopyInitialization.cpp:37
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition:
ApplyReplacements.h:27
clang::tidy::performance::UnnecessaryCopyInitialization::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:
UnnecessaryCopyInitialization.h:29
clang::tidy::ClangTidyOptions::OptionMap
std::map< std::string, ClangTidyValue > OptionMap
Definition:
ClangTidyOptions.h:111
clang::tidy::performance::UnnecessaryCopyInitialization::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:
UnnecessaryCopyInitialization.cpp:162
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