build/clang-plugin/JSHandleRootedTypedefChecker.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "JSHandleRootedTypedefChecker.h"
   6 #include "CustomMatchers.h"
   7
   8 void JSHandleRootedTypedefChecker::registerMatchers(MatchFinder *AstMatcher) {
   9   AstMatcher->addMatcher(
  10       declaratorDecl(isUsingJSHandleRootedTypedef(), isNotSpiderMonkey())
  11           .bind("declaratorDecl"),
  12       this);
  13 }
  14
  15 std::string getReplacement(std::string TypeName) {
  16   for (auto &pair : JSHandleRootedTypedefMap) {
  17     if (!TypeName.compare(pair[0])) {
  18       return pair[1];
  19     }
  20   }
  21   llvm_unreachable("Unexpected type name");
  22 }
  23
  24 void JSHandleRootedTypedefChecker::check(
  25     const MatchFinder::MatchResult &Result) {
  26   const char *Warning = "The fully qualified types are preferred over the "
  27                         "shorthand typedefs for JS::Handle/JS::Rooted types "
  28                         "outside SpiderMonkey.";
  29
  30   const DeclaratorDecl *Declarator =
  31       Result.Nodes.getNodeAs<DeclaratorDecl>("declaratorDecl");
  32
  33   std::string Replacement = getReplacement(Declarator->getType().getAsString());
  34   diag(Declarator->getBeginLoc(), Warning, DiagnosticIDs::Warning)
  35       << FixItHint::CreateReplacement(
  36              Declarator->getTypeSourceInfo()->getTypeLoc().getSourceRange(),
  37              Replacement);
  38 }