xref: /llvm-project/clang-tools-extra/clang-tidy/google/DefaultArgumentsCheck.cpp (revision 7d2ea6c422d3f5712b7253407005e1a465a76946)
1 //===--- DefaultArgumentsCheck.cpp - clang-tidy----------------------------===//
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 #include "DefaultArgumentsCheck.h"
10 #include "clang/AST/ASTContext.h"
11 #include "clang/ASTMatchers/ASTMatchFinder.h"
12 
13 using namespace clang::ast_matchers;
14 
15 namespace clang::tidy::google {
16 
registerMatchers(MatchFinder * Finder)17 void DefaultArgumentsCheck::registerMatchers(MatchFinder *Finder) {
18   Finder->addMatcher(
19       cxxMethodDecl(anyOf(isOverride(), isVirtual()),
20                     hasAnyParameter(parmVarDecl(hasInitializer(expr()))))
21           .bind("Decl"),
22       this);
23 }
24 
check(const MatchFinder::MatchResult & Result)25 void DefaultArgumentsCheck::check(const MatchFinder::MatchResult &Result) {
26   const auto *MatchedDecl = Result.Nodes.getNodeAs<CXXMethodDecl>("Decl");
27   diag(MatchedDecl->getLocation(),
28        "default arguments on virtual or override methods are prohibited");
29 }
30 
31 } // namespace clang::tidy::google
32