1 files changed, 24 insertions, 0 deletions
diff --git a/build/clang-plugin/NoUsingNamespaceMozillaJavaChecker.cpp b/build/clang-plugin/NoUsingNamespaceMozillaJavaChecker.cpp
new file mode 100644
index 0000000000..20449dba92
--- /dev/null
+++ b/build/clang-plugin/NoUsingNamespaceMozillaJavaChecker.cpp
@@ -0,0 +1,24 @@
+/* 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 "NoUsingNamespaceMozillaJavaChecker.h"
+#include "CustomMatchers.h"
+
+void NoUsingNamespaceMozillaJavaChecker::registerMatchers(
+    MatchFinder *AstMatcher) {
+  AstMatcher->addMatcher(
+      usingDirectiveDecl(isUsingNamespaceMozillaJava()).bind("directive"),
+      this);
+}
+
+void NoUsingNamespaceMozillaJavaChecker::check(
+    const MatchFinder::MatchResult &Result) {
+  const UsingDirectiveDecl *Directive =
+      Result.Nodes.getNodeAs<UsingDirectiveDecl>("directive");
+  const NamespaceDecl *Namespace = Directive->getNominatedNamespace();
+
+  diag(Directive->getUsingLoc(), "using namespace %0 is forbidden",
+       DiagnosticIDs::Error)
+      << Namespace->getQualifiedNameAsString();
+}