/*
* $Id: ThrowStatement.java,v 1.8 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.ConstantPool;
import anvil.parser.Tag;
import anvil.ErrorListener;
import anvil.script.compiler.ByteCompiler;
import anvil.script.Context;
import anvil.script.expression.Expression;
import anvil.script.parser.TemplateParser;
import anvil.script.ScriptException;
import java.io.IOException;
/**
* class ThrowStatement
*
* @author: Jani Lehtim�ki
*/
public class ThrowStatement extends Statement
{
private Expression _expression = null;
public ThrowStatement(Statement parent, Location location, Expression expression) {
super(parent, location);
_expression = expression;
}
public int typeOf()
{
return Statement.ST_THROW;
}
public String name() {
return "throw";
}
public void parse(TemplateParser parser, Tag tag)
{
}
public void check(ErrorListener context)
{
if (_expression != null) {
_expression.check(context);
}
}
public Jumps eliminate(ErrorListener context)
{
Jumps jumps = new Jumps().setThrow().setBlocked(true);
return jumps;
}
public void compile(ByteCompiler context)
{
Code code = context.getCode();
ConstantPool pool = code.getPool();
code.aload_first();
FunctionStatement function = getFunctionStatement();
if (function.isGenerator()) {
code.aload(function.getFrameIndex());
code.invokevirtual(pool.addMethodRef("anvil/script/Generator", "setClosedState", "()V"));
}
_expression.compile(context, Expression.GET);
code.invokevirtual(pool.addMethodRef(context.TYPE_CONTEXT,
"exception", "(Lanvil/core/Any;)Lanvil/script/ScriptException;"));
code.athrow();
}
public boolean isBlocked()
{
return true;
}
}