/*
* Copyright (c) 1998-2011 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.BooleanValue;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.NullValue;
import com.caucho.quercus.env.Value;
import com.caucho.util.L10N;
import java.io.IOException;
/**
* Represents a PHP each expression.
*/
public class FunEachExpr extends AbstractUnaryExpr {
private final L10N L = new L10N(FunEachExpr.class);
private boolean _isVar;
public FunEachExpr(Location location, Expr expr)
throws IOException
{
super(location, expr);
_isVar = expr.isVar();
}
public FunEachExpr(Expr expr)
{
super(expr);
_isVar = expr.isVar();
}
/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
public Value eval(Env env)
{
if (! _isVar) {
env.error(L.l("each() argument must be a variable at '{0}'", getExpr()));
return NullValue.NULL;
}
Value var = getExpr().evalRef(env);
Value value = var.toValue();
if (value instanceof ArrayValue) {
ArrayValue array = (ArrayValue) value;
return array.each();
}
else {
env.warning(L.l("each() argument must be an array at '{0}'",
value.getClass().getSimpleName()));
return BooleanValue.FALSE;
}
}
}