/*
* Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.quercus.env;
import java.io.Serializable;
/**
* Represents an array-get argument which might be a call to a reference.
*
* foo($a[0]), where is not known if foo is defined as foo($a) or foo(&$a)
*/
public class ArgGetValue extends ArgValue
implements Serializable {
private final Value _obj;
private final Value _index;
public ArgGetValue(Value obj, Value index) {
_obj = obj;
_index = index;
}
@Override
public Value toRefValue() {
// php/0425
return toLocalValue();
}
/**
* Returns the arg object for a field reference, e.g.
* foo($a[0][1])
*/
@Override
public Value getArg(Value index, boolean isTop) {
return new ArgGetValue(this, index); // php/3d1p
}
/**
* Returns the arg object for a field reference, e.g.
* foo($a[0]->x)
*/
@Override
public Value getFieldArg(Env env, StringValue index, boolean isTop) {
return new ArgGetFieldValue(env, this, index); // php/3d2p
}
/**
* Converts to a reference variable.
*/
@Override
public Var toLocalVarDeclAsRef() {
// php/3d55, php/3d49, php/3921
return _obj.toAutoArray().getVar(_index).toLocalVarDeclAsRef();
}
@Override
public Value toAutoArray() {
return _obj.toAutoArray().getVar(_index).toAutoArray();
}
@Override
public Value toAutoObject(Env env) {
return _obj.toAutoArray().getVar(_index).toAutoObject(env);
}
/**
* Converts to a read-only value.
*/
@Override
public Value toLocalValueReadOnly() {
return _obj.get(_index);
}
/**
* Converts to a value.
*/
@Override
public Value toLocalValue() {
return _obj.get(_index);
}
/**
* Converts to a value.
*/
@Override
public Value toLocalRef() {
return _obj.get(_index);
}
//
// Java Serialization
//
public Object writeReplace() {
return toValue();
}
}