clang-tools-extra/clang-tidy/google/DefaultArgumentsCheck.cpp

   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
  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
  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