/*
* 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.statement;
import com.caucho.quercus.Location;
import com.caucho.quercus.env.Env;
import com.caucho.quercus.env.Value;
import java.util.ArrayList;
/**
* Represents sequence of statements.
*/
public class BlockStatement extends Statement {
protected Statement []_statements;
public BlockStatement(Location location, Statement []statements)
{
super(location);
_statements = statements;
for (Statement stmt : _statements)
stmt.setParent(this);
}
public BlockStatement(Location location, ArrayList<Statement> statementList)
{
super(location);
_statements = new Statement[statementList.size()];
statementList.toArray(_statements);
for (Statement stmt : _statements)
stmt.setParent(this);
}
public BlockStatement append(ArrayList<Statement> statementList)
{
Statement []statements
= new Statement[_statements.length + statementList.size()];
System.arraycopy(_statements, 0, statements, 0, _statements.length);
for (int i = 0; i < statementList.size(); i++)
statements[i + _statements.length] = statementList.get(i);
return new BlockStatement(getLocation(), statements);
}
public Statement []getStatements()
{
return _statements;
}
/**
* Returns true if the statement can fallthrough.
*/
public int fallThrough()
{
for (int i = 0; i < getStatements().length; i++) {
Statement stmt = getStatements()[i];
int fallThrough = stmt.fallThrough();
if (fallThrough != FALL_THROUGH)
return fallThrough;
}
return FALL_THROUGH;
}
public Value execute(Env env)
{
for (int i = 0; i < _statements.length; i++) {
Statement statement = _statements[i];
Value value = statement.execute(env);
if (value != null) {
return value;
}
}
return null;
}
}