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/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* 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/. */
package org.mozilla.javascript;
/**
* This interface may be combined with any object that implements Scriptable
* to add support for properties keyed by Symbol objects (as opposed to
* String and number objects as in previous versions of JavaScript.
* It's separated into its own interface so that the addition of Symbol
* support does not break compatibility for existing code.
*
* @since 1.7.8
*/
public interface SymbolScriptable
{
/**
* Return the value of the property with the specified key, or
* NOT_FOUND.
*/
Object get(Symbol key, Scriptable start);
/**
* Return true if the specified property exists.
*/
boolean has(Symbol key, Scriptable start);
/**
* Add a new property to to the object.
*/
void put(Symbol key, Scriptable start, Object value);
/**
* Delete a property with the specified key.
*/
void delete(Symbol key);
}