1 files changed, 44 insertions, 0 deletions
diff --git a/js/src/frontend/TaggedParserAtomIndexHasher.h b/js/src/frontend/TaggedParserAtomIndexHasher.h
new file mode 100644
index 0000000000..0dc3f0eeaa
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+++ b/js/src/frontend/TaggedParserAtomIndexHasher.h
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+/* -*- 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_TaggedParserAtomIndexHasher_h
+#define frontend_TaggedParserAtomIndexHasher_h
+
+#include "frontend/ParserAtom.h"  // TaggedParserAtomIndex, TrivialTaggedParserAtomIndex
+#include "js/HashTable.h"  // HashNumber
+
+namespace js {
+namespace frontend {
+
+class TaggedParserAtomIndexHasher {
+ public:
+  using Lookup = TaggedParserAtomIndex;
+
+  static inline HashNumber hash(const Lookup& l) {
+    return HashNumber(l.rawData());
+  }
+  static inline bool match(TaggedParserAtomIndex entry, const Lookup& l) {
+    return l == entry;
+  }
+};
+
+class TrivialTaggedParserAtomIndexHasher {
+ public:
+  using Lookup = TrivialTaggedParserAtomIndex;
+
+  static inline HashNumber hash(const Lookup& l) {
+    return HashNumber(l.rawData());
+  }
+  static inline bool match(TrivialTaggedParserAtomIndex entry,
+                           const Lookup& l) {
+    return l == entry;
+  }
+};
+
+}  // namespace frontend
+}  // namespace js
+
+#endif  // frontend_TaggedParserAtomIndexHasher_h