1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/frontend/ParseNodeVerify.h b/js/src/frontend/ParseNodeVerify.h
new file mode 100644
index 0000000000..5cf7c12bf8
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+++ b/js/src/frontend/ParseNodeVerify.h
@@ -0,0 +1,42 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * 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/. */
+
+#ifndef frontend_ParseNodeVerify_h
+#define frontend_ParseNodeVerify_h
+
+#include "ds/LifoAlloc.h"                 // LifoAlloc
+#include "frontend/ParseNode.h"           // ParseNode
+#include "frontend/SyntaxParseHandler.h"  // SyntaxParseHandler::Node
+
+namespace js {
+namespace frontend {
+
+// In most builds, examine the given ParseNode and crash if it's not
+// well-formed. (In late beta and shipping builds of Firefox, this does
+// nothing.)
+//
+// This returns true on success, and false only if we hit the recursion limit.
+// If the ParseNode is actually bad, we crash.
+
+#ifdef DEBUG
+extern MOZ_MUST_USE bool CheckParseTree(JSContext* cx, const LifoAlloc& alloc,
+                                        ParseNode* pn);
+#else
+inline MOZ_MUST_USE bool CheckParseTree(JSContext* cx, const LifoAlloc& alloc,
+                                        ParseNode* pn) {
+  return true;
+}
+#endif
+
+inline MOZ_MUST_USE bool CheckParseTree(JSContext* cx, const LifoAlloc& alloc,
+                                        SyntaxParseHandler::Node pn) {
+  return true;
+}
+
+} /* namespace frontend */
+} /* namespace js */
+
+#endif  // frontend_ParseNodeVerify_h