clang-tools  14.0.0git
RedundantVoidArgCheck.h
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1 //===--- RedundantVoidArgCheck.h - clang-tidy --------------------*- C++-*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANT_VOID_ARG_CHECK_H
10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANT_VOID_ARG_CHECK_H
11 
12 #include "../ClangTidyCheck.h"
13 #include "clang/Lex/Token.h"
14 
15 #include <string>
16 
17 namespace clang {
18 namespace tidy {
19 namespace modernize {
20 
21 /// Find and remove redundant void argument lists.
22 ///
23 /// Examples:
24 /// `int f(void);` becomes `int f();`
25 /// `int (*f(void))(void);` becomes `int (*f())();`
26 /// `typedef int (*f_t(void))(void);` becomes `typedef int (*f_t())();`
27 /// `void (C::*p)(void);` becomes `void (C::*p)();`
28 /// `C::C(void) {}` becomes `C::C() {}`
29 /// `C::~C(void) {}` becomes `C::~C() {}`
30 ///
32 public:
34  : ClangTidyCheck(Name, Context) {}
35 
36  bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
37  return LangOpts.CPlusPlus;
38  }
39 
40  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
41 
42  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
43 
44 private:
45  void processFunctionDecl(const ast_matchers::MatchFinder::MatchResult &Result,
46  const FunctionDecl *Function);
47 
48  void
49  processTypedefNameDecl(const ast_matchers::MatchFinder::MatchResult &Result,
50  const TypedefNameDecl *Typedef);
51 
52  void processFieldDecl(const ast_matchers::MatchFinder::MatchResult &Result,
53  const FieldDecl *Member);
54 
55  void processVarDecl(const ast_matchers::MatchFinder::MatchResult &Result,
56  const VarDecl *Var);
57 
58  void
59  processNamedCastExpr(const ast_matchers::MatchFinder::MatchResult &Result,
60  const CXXNamedCastExpr *NamedCast);
61 
62  void
63  processExplicitCastExpr(const ast_matchers::MatchFinder::MatchResult &Result,
64  const ExplicitCastExpr *ExplicitCast);
65 
66  void processLambdaExpr(const ast_matchers::MatchFinder::MatchResult &Result,
67  const LambdaExpr *Lambda);
68 
69  void
70  removeVoidArgumentTokens(const ast_matchers::MatchFinder::MatchResult &Result,
71  SourceRange Range, StringRef GrammarLocation);
72 
73  void removeVoidToken(Token VoidToken, StringRef Diagnostic);
74 };
75 
76 } // namespace modernize
77 } // namespace tidy
78 } // namespace clang
79 
80 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANT_VOID_ARG_CHECK_H
Range
CharSourceRange Range
SourceRange for the file name.
Definition: IncludeOrderCheck.cpp:38
clang::tidy::modernize::RedundantVoidArgCheck::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: RedundantVoidArgCheck.h:36
clang::tidy::modernize::RedundantVoidArgCheck::registerMatchers
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
Definition: RedundantVoidArgCheck.cpp:46
clang::tidy::ClangTidyCheck
Base class for all clang-tidy checks.
Definition: ClangTidyCheck.h:54
clang::tidy::modernize::RedundantVoidArgCheck::check
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
Definition: RedundantVoidArgCheck.cpp:73
Diagnostic
DiagnosticCallback Diagnostic
Definition: ConfigCompile.cpp:101
clang::tidy::ClangTidyContext
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
Definition: ClangTidyDiagnosticConsumer.h:72
clang::tidy::modernize::RedundantVoidArgCheck
Find and remove redundant void argument lists.
Definition: RedundantVoidArgCheck.h:31
Name
static constexpr llvm::StringLiteral Name
Definition: UppercaseLiteralSuffixCheck.cpp:28
clang
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
Definition: ApplyReplacements.h:27
clang::tidy::modernize::RedundantVoidArgCheck::RedundantVoidArgCheck
RedundantVoidArgCheck(StringRef Name, ClangTidyContext *Context)
Definition: RedundantVoidArgCheck.h:33