Programming Languages Research Group: Git - IRC.git/blob

   1 package IR;
   2 import java.util.*;
   3
   4 public class Virtual {
   5     State state;
   6     Hashtable methodnumber;
   7     Hashtable classmethodcount;
   8
   9     public int getMethodNumber(MethodDescriptor md) {
  10         return ((Integer)methodnumber.get(md)).intValue();
  11     }
  12
  13     public int getMethodCount(ClassDescriptor md) {
  14         return ((Integer)classmethodcount.get(md)).intValue();
  15     }
  16
  17     public Virtual(State state) {
  18         this.state=state;
  19         methodnumber=new Hashtable();
  20         classmethodcount=new Hashtable();
  21         doAnalysis();
  22     }
  23
  24     private void doAnalysis() {
  25         Iterator classit=state.getClassSymbolTable().getDescriptorsIterator();
  26         while(classit.hasNext()) {
  27             ClassDescriptor cd=(ClassDescriptor)classit.next();
  28             numberMethods(cd);
  29         }
  30     }
  31
  32     private int numberMethods(ClassDescriptor cd) {
  33         if (classmethodcount.containsKey(cd))
  34             return ((Integer)classmethodcount.get(cd)).intValue();
  35         ClassDescriptor superdesc=cd.getSuperDesc();
  36         int start=0;
  37         if (superdesc!=null)
  38             start=numberMethods(superdesc);
  39         for(Iterator it=cd.getMethods();it.hasNext();) {
  40             MethodDescriptor md=(MethodDescriptor)it.next();
  41             if (md.isStatic()||md.getReturnType()==null)
  42                 continue;
  43             if (superdesc!=null) {
  44                 Set possiblematches=superdesc.getMethodTable().getSet(md.getSymbol());
  45                 boolean foundmatch=false;
  46                 for(Iterator matchit=possiblematches.iterator();matchit.hasNext();) {
  47                     MethodDescriptor matchmd=(MethodDescriptor)matchit.next();
  48                     if (md.matches(matchmd)) {
  49                         int num=((Integer)methodnumber.get(matchmd)).intValue();
  50                         methodnumber.put(md, new Integer(num));
  51                         foundmatch=true;
  52                         break;
  53                     }
  54                 }
  55                 if (!foundmatch)
  56                     methodnumber.put(md, new Integer(start++));
  57             } else {
  58                 methodnumber.put(md, new Integer(start++));
  59             }
  60         }
  61         classmethodcount.put(cd, new Integer(start));
  62         return start;
  63     }
  64 }
  65