/*
* 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.expr;
import com.caucho.quercus.*;
import com.caucho.quercus.env.Closure;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.NullValue;
import com.caucho.quercus.env.QuercusClass;
import com.caucho.quercus.env.UnsetValue;
import com.caucho.quercus.env.Value;
import com.caucho.quercus.parser.QuercusParser;
import com.caucho.quercus.program.Function;
import com.caucho.quercus.function.AbstractFunction;
import com.caucho.util.L10N;
import java.util.ArrayList;
/**
* Represents a PHP closure expression.
*/
public class ClosureExpr extends Expr {
private static final L10N L = new L10N(ClosureExpr.class);
protected final Function _fun;
public ClosureExpr(Location location, Function fun)
{
// quercus/120o
super(location);
_fun = fun;
}
/**
* Returns the name.
*/
public String getName()
{
return _fun.getName();
}
/**
* Returns the function
*/
public Function getFunction()
{
return _fun;
}
/**
* Returns the location if known.
*/
@Override
public String getFunctionLocation()
{
return " [" + getName() + "]";
}
/**
* Returns the reference of the value.
* @param location
*/
@Override
public Expr createRef(QuercusParser parser)
{
return parser.getFactory().createRef(this);
}
/**
* Returns the copy of the value.
* @param location
*/
@Override
public Expr createCopy(ExprFactory factory)
{
return this;
}
/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
@Override
public Value eval(Env env)
{
return evalImpl(env);
}
/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
@Override
public Value evalCopy(Env env)
{
return evalImpl(env);
}
/**
* Evaluates the expression.
*
* @param env the calling environment.
*
* @return the expression value.
*/
private Value evalImpl(Env env)
{
return new Closure(env, _fun);
}
public String toString()
{
return getName() + "()";
}
}