clang-tools  9.0.0
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 /// \brief 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  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
37 
38  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
39 
40 private:
41  void processFunctionDecl(const ast_matchers::MatchFinder::MatchResult &Result,
42  const FunctionDecl *Function);
43 
44  void
45  processTypedefNameDecl(const ast_matchers::MatchFinder::MatchResult &Result,
46  const TypedefNameDecl *Typedef);
47 
48  void processFieldDecl(const ast_matchers::MatchFinder::MatchResult &Result,
49  const FieldDecl *Member);
50 
51  void processVarDecl(const ast_matchers::MatchFinder::MatchResult &Result,
52  const VarDecl *Var);
53 
54  void
55  processNamedCastExpr(const ast_matchers::MatchFinder::MatchResult &Result,
56  const CXXNamedCastExpr *NamedCast);
57 
58  void
59  processExplicitCastExpr(const ast_matchers::MatchFinder::MatchResult &Result,
60  const ExplicitCastExpr *ExplicitCast);
61 
62  void processLambdaExpr(const ast_matchers::MatchFinder::MatchResult &Result,
63  const LambdaExpr *Lambda);
64 
65  void
66  removeVoidArgumentTokens(const ast_matchers::MatchFinder::MatchResult &Result,
67  SourceRange Range, StringRef GrammarLocation);
68 
69  void removeVoidToken(Token VoidToken, StringRef Diagnostic);
70 };
71 
72 } // namespace modernize
73 } // namespace tidy
74 } // namespace clang
75 
76 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_REDUNDANT_VOID_ARG_CHECK_H
Base class for all clang-tidy checks.
RedundantVoidArgCheck(StringRef Name, ClangTidyContext *Context)
Find and remove redundant void argument lists.
void registerMatchers(ast_matchers::MatchFinder *Finder) override
Override this to register AST matchers with Finder.
static constexpr llvm::StringLiteral Name
void check(const ast_matchers::MatchFinder::MatchResult &Result) override
ClangTidyChecks that register ASTMatchers should do the actual work in here.
===– Representation.cpp - ClangDoc Representation --------—*- C++ -*-===//
CharSourceRange Range
SourceRange for the file name.
Every ClangTidyCheck reports errors through a DiagnosticsEngine provided by this context.
llvm::Optional< llvm::Expected< tooling::AtomicChanges > > Result
Definition: Rename.cpp:36