JSHandleRootedTypedefChecker.cpp

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/* 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 "JSHandleRootedTypedefChecker.h"

#include "CustomMatchers.h"

void JSHandleRootedTypedefChecker::registerMatchers(MatchFinder *AstMatcher) {

  AstMatcher->addMatcher(

      declaratorDecl(isUsingJSHandleRootedTypedef(), isNotSpiderMonkey())

          .bind("declaratorDecl"),

      this);

std::string getReplacement(std::string TypeName) {

  for (auto &pair : JSHandleRootedTypedefMap) {

    if (!TypeName.compare(pair[0])) {

      return pair[1];

  llvm_unreachable("Unexpected type name");

void JSHandleRootedTypedefChecker::check(

    const MatchFinder::MatchResult &Result) {

  const char *Error = "The fully qualified types are preferred over the "

                        "shorthand typedefs for JS::Handle/JS::Rooted types "

                        "outside SpiderMonkey.";

  const DeclaratorDecl *Declarator =

      Result.Nodes.getNodeAs<DeclaratorDecl>("declaratorDecl");

  std::string Replacement = getReplacement(Declarator->getType().getAsString());

  diag(Declarator->getBeginLoc(), Error, DiagnosticIDs::Error)

      << FixItHint::CreateReplacement(

             Declarator->getTypeSourceInfo()->getTypeLoc().getSourceRange(),

             Replacement);