1 files changed, 38 insertions, 0 deletions
diff --git a/build/clang-plugin/JSHandleRootedTypedefChecker.cpp b/build/clang-plugin/JSHandleRootedTypedefChecker.cpp
new file mode 100644
index 0000000000..3e3adf7906
--- /dev/null
+++ b/build/clang-plugin/JSHandleRootedTypedefChecker.cpp
@@ -0,0 +1,38 @@
+/* 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);
+}