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     */
013    package org.jikesrvm.compilers.baseline;
014    
015    final 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      BasicBlock newBlock(int startval) {
024        int blockNumber = nextBlockNumber++;
025        return new BasicBlock(startval, blockNumber);
026      }
027    
028      public int getNumberofBlocks() {
029        return (nextBlockNumber - 1);
030      }
031    
032    }