/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "ExplicitOperatorBoolChecker.h"
#include "CustomMatchers.h"

void ExplicitOperatorBoolChecker::registerMatchers(MatchFinder *AstMatcher) {
  AstMatcher->addMatcher(
      cxxConversionDecl(isFirstParty(), hasName("operator bool"),
                        isInterestingForImplicitConversion(),
                        unless(anyOf(isExplicit(), isMarkedImplicit())))
          .bind("node"),
      this);
}

void ExplicitOperatorBoolChecker::check(
    const MatchFinder::MatchResult &Result) {
  const CXXConversionDecl *Method =
      Result.Nodes.getNodeAs<CXXConversionDecl>("node");

  const CXXRecordDecl *Clazz = Method->getParent();
  diag(Method->getBeginLoc(), "bad implicit conversion operator for %0",
       DiagnosticIDs::Error)
      << Clazz;
  diag(Method->getBeginLoc(), "consider adding the explicit keyword to %0",
       DiagnosticIDs::Note)
      << "'operator bool'";
}