Add m-esr52 at 52.6.0

1 files changed, 65 insertions, 0 deletions

diff --git a/js/src/builtin/SymbolObject.h b/js/src/builtin/SymbolObject.h
new file mode 100644
index 000000000..0f204b494
--- /dev/null
+++ b/js/src/builtin/SymbolObject.h
@@ -0,0 +1,65 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * 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 builtin_SymbolObject_h
+#define builtin_SymbolObject_h
+
+#include "vm/NativeObject.h"
+#include "vm/Symbol.h"
+
+namespace js {
+
+class SymbolObject : public NativeObject
+{
+    /* Stores this Symbol object's [[PrimitiveValue]]. */
+    static const unsigned PRIMITIVE_VALUE_SLOT = 0;
+
+  public:
+    static const unsigned RESERVED_SLOTS = 1;
+
+    static const Class class_;
+
+    static JSObject* initClass(JSContext* cx, js::HandleObject obj);
+
+    /*
+     * Creates a new Symbol object boxing the given primitive Symbol.  The
+     * object's [[Prototype]] is determined from context.
+     */
+    static SymbolObject* create(JSContext* cx, JS::HandleSymbol symbol);
+
+    JS::Symbol* unbox() const {
+        return getFixedSlot(PRIMITIVE_VALUE_SLOT).toSymbol();
+    }
+
+  private:
+    inline void setPrimitiveValue(JS::Symbol* symbol) {
+        setFixedSlot(PRIMITIVE_VALUE_SLOT, SymbolValue(symbol));
+    }
+
+    static MOZ_MUST_USE bool construct(JSContext* cx, unsigned argc, Value* vp);
+
+    // Static methods.
+    static MOZ_MUST_USE bool for_(JSContext* cx, unsigned argc, Value* vp);
+    static MOZ_MUST_USE bool keyFor(JSContext* cx, unsigned argc, Value* vp);
+
+    // Methods defined on Symbol.prototype.
+    static MOZ_MUST_USE bool toString_impl(JSContext* cx, const CallArgs& args);
+    static MOZ_MUST_USE bool toString(JSContext* cx, unsigned argc, Value* vp);
+    static MOZ_MUST_USE bool valueOf_impl(JSContext* cx, const CallArgs& args);
+    static MOZ_MUST_USE bool valueOf(JSContext* cx, unsigned argc, Value* vp);
+    static MOZ_MUST_USE bool toPrimitive(JSContext* cx, unsigned argc, Value* vp);
+
+    static const JSPropertySpec properties[];
+    static const JSFunctionSpec methods[];
+    static const JSFunctionSpec staticMethods[];
+};
+
+extern JSObject*
+InitSymbolClass(JSContext* cx, HandleObject obj);
+
+} /* namespace js */
+
+#endif /* builtin_SymbolObject_h */