1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/vm/Id.cpp b/js/src/vm/Id.cpp
new file mode 100644
index 0000000000..ee713fa9d0
--- /dev/null
+++ b/js/src/vm/Id.cpp
@@ -0,0 +1,50 @@
+/* -*- 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/. */
+
+#include "js/Id.h"
+#include "js/RootingAPI.h"
+
+#include "vm/JSContext.h"
+#include "vm/SymbolType.h"
+
+#include "vm/JSAtom-inl.h"
+
+using namespace js;
+
+static const JS::PropertyKey voidKeyValue = JS::PropertyKey::Void();
+
+const JS::HandleId JS::VoidHandlePropertyKey =
+    JS::HandleId::fromMarkedLocation(&voidKeyValue);
+
+bool JS::PropertyKey::isPrivateName() const {
+  return isSymbol() && toSymbol()->isPrivateName();
+}
+
+bool JS::PropertyKey::isWellKnownSymbol(JS::SymbolCode code) const {
+  MOZ_ASSERT(uint32_t(code) < WellKnownSymbolLimit);
+  if (!isSymbol()) {
+    return false;
+  }
+  return toSymbol()->code() == code;
+}
+
+/* static */ JS::PropertyKey JS::PropertyKey::fromPinnedString(JSString* str) {
+  MOZ_ASSERT(AtomIsPinned(TlsContext.get(), &str->asAtom()));
+  return js::AtomToId(&str->asAtom());
+}
+
+/* static */ bool JS::PropertyKey::isNonIntAtom(JSAtom* atom) {
+  uint32_t index;
+  if (!atom->isIndex(&index)) {
+    return true;
+  }
+  static_assert(PropertyKey::IntMin == 0);
+  return index > PropertyKey::IntMax;
+}
+
+/* static */ bool JS::PropertyKey::isNonIntAtom(JSString* str) {
+  return JS::PropertyKey::isNonIntAtom(&str->asAtom());
+}