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/*
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package jdk.nashorn.internal.runtime;
/**
* This is the base class for function scopes. Subclasses of this class are
* produced by the ObjectClassGenerator along with additional fields for storing
* local vars. The number of fields required is determined by ObjectCreator.
*
* The scope is also responsible for handling the var arg 'arguments' object,
* though most of the access is via generated code.
*
* The constructor of this class is responsible for any function prologue
* involving the scope.
*
* TODO see NASHORN-715.
*/
public class FunctionScope extends ScriptObject implements Scope {
/** Area to store scope arguments. (public for access from scripts.) */
public final ScriptObject arguments;
/** Flag to indicate that a split method issued a return statement */
private int splitState = -1;
/**
* Constructor
*
* @param map property map
* @param callerScope caller scope
* @param arguments arguments
*/
public FunctionScope(final PropertyMap map, final ScriptObject callerScope, final ScriptObject arguments) {
super(callerScope, map);
this.arguments = arguments;
setIsScope();
}
/**
* Constructor
*
* @param map property map
* @param callerScope caller scope
*/
public FunctionScope(final PropertyMap map, final ScriptObject callerScope) {
super(callerScope, map);
this.arguments = null;
setIsScope();
}
/**
* Constructor
*
* @param map property map
* @param primitiveSpill primitive spill pool
* @param objectSpill reference spill pool
*/
public FunctionScope(final PropertyMap map, final long[] primitiveSpill, final Object[] objectSpill) {
super(map, primitiveSpill, objectSpill);
this.arguments = null;
}
/**
* Get the current split state.
* @return current split state
*/
@Override
public int getSplitState() {
return splitState;
}
/**
* Set the current split state.
* @param state current split state
*/
@Override
public void setSplitState(final int state) {
splitState = state;
}
}
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