Beispiel #1
0
  private Record readTestRecord(final StreamTokenizer stok) throws IOException {
    final Record rec = new Record();
    final double[] vals;
    try {
      rec.poly1 = scanString(stok);
    } catch (final EOFException e) {
      return null;
    }
    rec.lineNumber = stok.lineno();
    rec.poly2 = scanString(stok);
    rec.X21.scan("[%s]", stok);
    rec.X12.invert(rec.X21);
    final Vector pairList = new Vector(10);
    String s;
    rec.minDist = Double.POSITIVE_INFINITY;

    while (true) {
      s = scanString(stok);
      if (s.equals("P")) rec.promote = true;
      else if (s.equals("D")) rec.maxPairDist = TokenScanner.scanDouble(stok);
      else break;
    }

    while (!s.equals("*")) {
      final ClosestPointPair pair = new ClosestPointPair();
      if (!s.equals("N")) {
        pair.feat1 = getDummyFeature(s, stok);
        pair.feat2 = getDummyFeature(scanString(stok), stok);
        final Point3dX p1 = new Point3dX();
        p1.scan("[%v]", stok);
        pair.pnt1.set(p1);
      }
      final Vector3dX dir = new Vector3dX();
      dir.scan("[%v]", stok);
      dir.normalize();
      pair.nrml.set(dir);
      pair.dist = TokenScanner.scanDouble(stok);

      if (!s.equals("N")) pair.pnt2.scaleAdd(pair.dist, pair.nrml, pair.pnt1);

      if (pair.dist < rec.minDist) {
        rec.minDist = pair.dist;
        rec.minNrml = new Vector3d(pair.nrml);
      }

      pairList.add(pair);
      s = scanString(stok);
    }
    rec.basePairs = (ClosestPointPair[]) pairList.toArray(new ClosestPointPair[0]);
    rec.testPairs = new ClosestPointPair[rec.basePairs.length];
    for (int i = 0; i < rec.testPairs.length; i++)
      rec.testPairs[i] = new ClosestPointPair(rec.basePairs[i]);
    return rec;
  }
Beispiel #2
0
 // Parse the input words stream into corresponding statement
 public Statement parseStatement(TokenScanner scanner) {
   String token = scanner.nextToken();
   if (token.equals("PRINT")) {
     return new PrintStmt(scanner);
   }
   if (token.equals("LET")) {
     return new LetStmt(scanner);
   }
   if (token.equals("INPUT")) {
     return new InputStmt(scanner);
   }
   if (token.equals("GOTO")) {
     return new GoToStmt(scanner);
   }
   if (token.equals("IF")) {
     return new IfStmt(scanner);
   }
   if (token.equals("END")) {
     return new EndStmt(scanner);
   }
   if (token.equals("REM")) {
     return new RemStmt(scanner);
   }
   System.out.println("Not a legal statement");
   return null;
 }
Beispiel #3
0
 public Expression parseExp(TokenScanner scanner) {
   Expression exp = readE(scanner, 0);
   if (scanner.hasMoreTokens()) {
     System.out.println("Unexpected token");
   }
   return exp;
 }
  // gbufferedimage.setRGB(x, y, rgb);
  public void execute(TokenScanner paramTokenScanner, JavaBackEnd paramJavaBackEnd) {
    paramTokenScanner.verifyToken("(");
    String id = nextString(paramTokenScanner);
    paramTokenScanner.verifyToken(",");
    int x = nextInt(paramTokenScanner);
    paramTokenScanner.verifyToken(",");
    int y = nextInt(paramTokenScanner);
    paramTokenScanner.verifyToken(",");
    int rgb = nextInt(paramTokenScanner);
    paramTokenScanner.verifyToken(")");

    GObject gobj = paramJavaBackEnd.getGObject(id);
    if (gobj != null && gobj instanceof GBufferedImage) {
      GBufferedImage img = (GBufferedImage) gobj;
      img.setRGB(x, y, rgb);
    }
  }
Beispiel #5
0
 public Expression readT(TokenScanner scanner) {
   String token = scanner.nextToken();
   if (token.charAt(0) >= 'A' && token.charAt(0) <= 'Z'
       || token.charAt(0) >= 'a' && token.charAt(0) <= 'z') {
     return new IdentifierExp(token);
   } else if (token.charAt(0) >= '0' && token.charAt(0) <= '9') {
     return new ConstantExp(Integer.parseInt(token));
   }
   if (!token.equals("(")) {
     System.out.println("Unexpected token");
   }
   Expression exp = readE(scanner, 0);
   if (!scanner.nextToken().equals(")")) {
     System.out.println("Unbalanced parentheses");
   }
   return exp;
 }
Beispiel #6
0
 public Expression readE(TokenScanner scanner, int prec) {
   Expression exp = readT(scanner);
   String token = null;
   while (true) {
     token = scanner.nextToken();
     int tprec = precedence(token);
     if (tprec <= prec) {
       break;
     }
     Expression rhs = readE(scanner, tprec);
     exp = new CompoundExp(token, exp, rhs);
   }
   if (token != null) {
     scanner.saveToken(token);
   }
   return exp;
 }