/*
* Copyright (c) 1998-2008 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.expr;
import com.caucho.quercus.Location;
import com.caucho.quercus.env.ArrayValue;
import com.caucho.quercus.env.ArrayValueImpl;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.Value;
import java.util.ArrayList;
/**
* Represents the array function
*/
public class ArrayFunExpr extends Expr {
protected final Expr []_keys;
protected final Expr []_values;
public ArrayFunExpr(Location location,
ArrayList<Expr> keyList,
ArrayList<Expr> valueList)
{
super(location);
_keys = new Expr[keyList.size()];
keyList.toArray(_keys);
_values = new Expr[valueList.size()];
valueList.toArray(_values);
}
public ArrayFunExpr(Location location, Expr []keys, Expr []values)
{
super(location);
_keys = keys;
_values = values;
}
public ArrayFunExpr(ArrayList<Expr> keyList, ArrayList<Expr> valueList)
{
this(Location.UNKNOWN, keyList, valueList);
}
public ArrayFunExpr(Expr []keys, Expr []values)
{
this(Location.UNKNOWN, keys, values);
}
/**
* Returns true if the expression evaluates to an array.
*/
public boolean isArray()
{
return true;
}
/**
* Returns true for a constant array.
*/
public boolean isConstant()
{
for (int i = 0; i < _keys.length; i++) {
if (_keys[i] != null && ! _keys[i].isConstant())
return false;
}
for (int i = 0; i < _values.length; i++) {
if (_values[i] != null && ! _values[i].isConstant())
return false;
}
return true;
}
/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
public Value eval(Env env)
{
ArrayValue array = new ArrayValueImpl();
for (int i = 0; i < _values.length; i++) {
Expr keyExpr = _keys[i];
Value value = _values[i].evalArg(env, true);
value = value.toArgValue();
if (keyExpr != null) {
Value key = keyExpr.evalArg(env, true).toArgValue();
array.put(key, value);
}
else
array.put(value);
}
return array;
}
public String toString()
{
return "array()";
}
}