wsp/src/main/java/jp/sourceforge/stigmata/birthmarks/wsp/OpcodeManager.java

   1 package jp.sourceforge.stigmata.birthmarks.wsp;
   2
   3 /*
   4  * $Id$
   5  */
   6
   7 import java.io.BufferedReader;
   8 import java.io.IOException;
   9 import java.io.InputStreamReader;
  10 import java.net.URL;
  11 import java.util.HashMap;
  12 import java.util.Map;
  13
  14 import jp.sourceforge.talisman.csvio.CsvLine;
  15 import jp.sourceforge.talisman.csvio.CsvParser;
  16
  17 /**
  18  *
  19  * @author Haruaki Tamada
  20  * @version $Revision$
  21  */
  22 public class OpcodeManager{
  23     private static final Map<Integer, Opcode> OPCODE_MAP = new HashMap<Integer, Opcode>();
  24     private static OpcodeManager manager = new OpcodeManager();
  25
  26     static{
  27         try{
  28             URL location = StackPatternBasedBirthmarkExtractor.class.getResource("/META-INF/bytecode.def");
  29             BufferedReader in = new BufferedReader(new InputStreamReader(location.openStream()));
  30             CsvParser parser = new CsvParser(in);
  31             while(parser.hasNext()){
  32                 CsvLine line = parser.next();
  33                 String[] values = line.getValues();
  34                 if(values.length == 5){
  35                     Opcode def = new Opcode(
  36                         Integer.parseInt(values[0]), values[1],
  37                         Integer.parseInt(values[2]),
  38                         Integer.parseInt(values[3]), values[4]
  39                     );
  40                     OPCODE_MAP.put(def.getOpcode(), def);
  41                 }
  42             }
  43         } catch(IOException e){
  44             throw new InternalError(e.getMessage());
  45         }
  46     }
  47
  48     /**
  49      * private constructor for singleton pattern.
  50      */
  51     private OpcodeManager(){
  52     }
  53
  54     public static OpcodeManager getInstance(){
  55         return manager;
  56     }
  57
  58     public Opcode getOpcode(int opcode){
  59         return OPCODE_MAP.get(opcode);
  60     }
  61 }