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llvm-project
clang-tools-extra
clang-tidy
readability
ContainerSizeEmptyCheck.h
Go to the documentation of this file.
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//===--- ContainerSizeEmptyCheck.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_CONTAINERSIZEEMPTYCHECK_H
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#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_CONTAINERSIZEEMPTYCHECK_H
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#include "../ClangTidyCheck.h"
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#include <vector>
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namespace
clang::tidy::readability
{
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/// Checks whether a call to the `size()`/`length()` method can be replaced with
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/// a call to `empty()`.
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///
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/// The emptiness of a container should be checked using the `empty()` method
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/// instead of the `size()`/`length()` method. It shows clearer intent to use
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/// `empty()`. Furthermore some containers may implement the `empty()` method
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/// but not implement the `size()` or `length()` method. Using `empty()`
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/// whenever possible makes it easier to switch to another container in the
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/// future.
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class
ContainerSizeEmptyCheck
:
public
ClangTidyCheck
{
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public
:
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ContainerSizeEmptyCheck
(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
;
35
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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std::vector<llvm::StringRef> ExcludedComparisonTypes;
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};
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}
// namespace clang::tidy::readability
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#endif
// LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_READABILITY_CONTAINERSIZEEMPTYCHECK_H
Name
llvm::SmallString< 256U > Name
Definition:
ChainedComparisonCheck.cpp:42
clang::tidy::ClangTidyCheck
Base class for all clang-tidy checks.
Definition:
ClangTidyCheck.h:53
clang::tidy::ClangTidyContext
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
Definition:
ClangTidyDiagnosticConsumer.h:69
clang::tidy::readability::ContainerSizeEmptyCheck
Checks whether a call to the size()/length() method can be replaced with a call to empty().
Definition:
ContainerSizeEmptyCheck.h:26
clang::tidy::readability::ContainerSizeEmptyCheck::check
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
Definition:
ContainerSizeEmptyCheck.cpp:224
clang::tidy::readability::ContainerSizeEmptyCheck::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:
ContainerSizeEmptyCheck.h:29
clang::tidy::readability::ContainerSizeEmptyCheck::registerMatchers
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
Definition:
ContainerSizeEmptyCheck.cpp:126
clang::tidy::readability::ContainerSizeEmptyCheck::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:
ContainerSizeEmptyCheck.cpp:121
clang::tidy::readability::ContainerSizeEmptyCheck::getCheckTraversalKind
std::optional< TraversalKind > getCheckTraversalKind() const override
Definition:
ContainerSizeEmptyCheck.h:35
clang::tidy::readability
Definition:
AvoidConstParamsInDecls.cpp:17
clang::tidy::ClangTidyOptions::OptionMap
llvm::StringMap< ClangTidyValue > OptionMap
Definition:
ClangTidyOptions.h:126
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1.9.6