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

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