001/*
002 *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003 *
004 *  This file is licensed to You under the Eclipse Public License (EPL);
005 *  You may not use this file except in compliance with the License. You
006 *  may obtain a copy of the License at
007 *
008 *      http://www.opensource.org/licenses/eclipse-1.0.php
009 *
010 *  See the COPYRIGHT.txt file distributed with this work for information
011 *  regarding copyright ownership.
012 */
013package org.jikesrvm.compilers.baseline;
014
015final class BasicBlockFactory {
016
017  private int nextBlockNumber = BasicBlock.STARTBBNUMBER;
018
019  /**
020   * This should be the usual constructor, we know the start, but don't
021   * yet know the end. No predecessors.
022   *
023   * @param startval start byte for the block
024   * @return a newly created block
025   */
026  BasicBlock newBlock(int startval) {
027    int blockNumber = nextBlockNumber++;
028    return new BasicBlock(startval, blockNumber);
029  }
030
031  public int getNumberofBlocks() {
032    return (nextBlockNumber - 1);
033  }
034
035}