/*
* $Id: ExitStatement.java,v 1.6 2002/09/16 08:05:06 jkl Exp $
*
* Copyright (c) 2002 Njet Communications Ltd. All Rights Reserved.
*
* Use is subject to license terms, as defined in
* Anvil Sofware License, Version 1.1. See LICENSE
* file, or http://njet.org/license-1.1.txt
*/
package anvil.script.statements;
import anvil.Location;
import anvil.core.Any;
import anvil.codec.Code;
import anvil.codec.Info;
import anvil.codec.ConstantPool;
import anvil.parser.Tag;
import anvil.ErrorListener;
import anvil.script.compiler.ByteCompiler;
import anvil.script.Context;
import anvil.script.ExitException;
import anvil.script.expression.Expression;
import anvil.script.parser.TemplateParser;
import anvil.script.Grammar;
import java.io.IOException;
/**
* class ExitStatement
*
* @author: Jani Lehtim�ki
*/
public class ExitStatement extends Statement
{
private Expression _expression;
public ExitStatement(Statement parent, Location location)
{
super(parent, location);
}
public ExitStatement(Statement parent, Location location, Expression expr)
{
super(parent, location);
_expression = expr;
}
public int typeOf()
{
return Statement.ST_EXIT;
}
public String name()
{
return "exit";
}
public void parse(TemplateParser parser, Tag tag)
{
}
public void check(ErrorListener context)
{
if (_expression != null) {
_expression.check(context);
}
}
public Jumps eliminate(ErrorListener context)
{
return new Jumps().setExit().setBlocked(true);
}
public void compile(ByteCompiler context)
{
Code code = context.getCode();
ConstantPool pool = code.getPool();
int clazz = pool.addClass("anvil/script/ExitException");
if (_expression != null) {
if (_expression.needLineNumbers()) {
context.location(_expression.getLocation());
}
code.anew(clazz);
code.dup();
_expression.compile(context, Expression.GET);
code.invokespecial(pool.addMethodRef(clazz, "<init>", "(Lanvil/core/Any;)V"));
} else {
code.anew(clazz);
code.dup();
code.invokespecial(pool.addMethodRef(clazz, "<init>", "()V"));
}
code.athrow();
}
public boolean isBlocked()
{
return true;
}
}