/*
* $Id: ComprehensionNode.java,v 1.2 2002/09/16 08:05:04 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.expression;
import anvil.ErrorListener;
import anvil.core.Any;
import anvil.core.Array;
import anvil.codec.Code;
import anvil.codec.ConstantPool;
import anvil.script.statements.Statement;
import anvil.script.compiler.ByteCompiler;
import anvil.script.Context;
import java.io.IOException;
/**
* class ComprehensionNode
*
* @author: Jani Lehtim�ki
*/
public abstract class ComprehensionNode extends Node
{
protected Statement _stmt;
protected VariableNode _var;
public ComprehensionNode()
{
super();
}
public void init(Statement stmt, VariableNode var)
{
_stmt = stmt;
_var = var;
}
public abstract int getClassReference(ConstantPool pool);
public abstract int typeOf();
public Node optimize()
{
return this;
}
public void check(ErrorListener context)
{
super.check(context);
_var.check(context);
_stmt.check(context);
}
public void compile(ByteCompiler context, int operation)
{
Code code = context.getCode();
_var.compile(context, new Node() {
public void compile(ByteCompiler context, int operation)
{
Code code_ = context.getCode();
ConstantPool pool = code_.getPool();
int clazz = getClassReference(pool);
code_.anew(clazz);
code_.dup();
code_.invokespecial(pool.addMethodRef(clazz, "<init>", "()V"));
}
});
code.pop();
_stmt.compile(context);
_var.compile(context, GET);
if (operation == GET_BOOLEAN) {
context.any2boolean();
}
}
}