Package org.antlr.misc

Examples of org.antlr.misc.IntervalSet


    String result = (s.and(s2)).toString();
    assertEquals(result, expecting);
  }

  @Test public void testEmptyIntersectionSingleElements() throws Exception {
    IntervalSet s = IntervalSet.of('a');
    IntervalSet s2 = IntervalSet.of('d');
    String expecting = "{}";
    String result = (s.and(s2)).toString();
    assertEquals(result, expecting);
  }
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    String result = (s.and(s2)).toString();
    assertEquals(result, expecting);
  }

    @Test public void testNotSingleElement() throws Exception {
        IntervalSet vocabulary = IntervalSet.of(1,1000);
        vocabulary.add(2000,3000);
        IntervalSet s = IntervalSet.of(50,50);
        String expecting = "{1..49, 51..1000, 2000..3000}";
        String result = (s.complement(vocabulary)).toString();
        assertEquals(result, expecting);
    }
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        String result = (s.complement(vocabulary)).toString();
        assertEquals(result, expecting);
    }

  @Test public void testNotSet() throws Exception {
    IntervalSet vocabulary = IntervalSet.of(1,1000);
    IntervalSet s = IntervalSet.of(50,60);
    s.add(5);
    s.add(250,300);
    String expecting = "{1..4, 6..49, 61..249, 301..1000}";
    String result = (s.complement(vocabulary)).toString();
    assertEquals(result, expecting);
  }
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    String result = (s.complement(vocabulary)).toString();
    assertEquals(result, expecting);
  }

  @Test public void testNotEqualSet() throws Exception {
    IntervalSet vocabulary = IntervalSet.of(1,1000);
    IntervalSet s = IntervalSet.of(1,1000);
    String expecting = "{}";
    String result = (s.complement(vocabulary)).toString();
    assertEquals(result, expecting);
  }
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    String result = (s.complement(vocabulary)).toString();
    assertEquals(result, expecting);
  }

  @Test public void testNotSetEdgeElement() throws Exception {
    IntervalSet vocabulary = IntervalSet.of(1,2);
    IntervalSet s = IntervalSet.of(1);
    String expecting = "2";
    String result = (s.complement(vocabulary)).toString();
    assertEquals(result, expecting);
  }
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  }

  protected static Integer getTokenType(Label label) {
    if ( label.isSet() ) {
      // pick random element of set
      IntervalSet typeSet = (IntervalSet)label.getSet();
      int randomIndex = random.nextInt(typeSet.size());
      return typeSet.get(randomIndex);
    }
    else {
      return Utils.integer(label.getAtom());
    }
    //System.out.println(t0.label.toString(g));
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    String result = (s.complement(vocabulary)).toString();
    assertEquals(result, expecting);
  }

    @Test public void testNotSetFragmentedVocabulary() throws Exception {
        IntervalSet vocabulary = IntervalSet.of(1,255);
        vocabulary.add(1000,2000);
        vocabulary.add(9999);
        IntervalSet s = IntervalSet.of(50,60);
        s.add(3);
        s.add(250,300);
        s.add(10000); // this is outside range of vocab and should be ignored
        String expecting = "{1..2, 4..49, 61..249, 1000..2000, 9999}";
        String result = (s.complement(vocabulary)).toString();
        assertEquals(result, expecting);
    }
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        String result = (s.complement(vocabulary)).toString();
        assertEquals(result, expecting);
    }

    @Test public void testSubtractOfCompletelyContainedRange() throws Exception {
        IntervalSet s = IntervalSet.of(10,20);
        IntervalSet s2 = IntervalSet.of(12,15);
        String expecting = "{10..11, 16..20}";
        String result = (s.subtract(s2)).toString();
        assertEquals(result, expecting);
    }
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        String result = (s.subtract(s2)).toString();
        assertEquals(result, expecting);
    }

    @Test public void testSubtractOfOverlappingRangeFromLeft() throws Exception {
        IntervalSet s = IntervalSet.of(10,20);
        IntervalSet s2 = IntervalSet.of(5,11);
        String expecting = "12..20";
        String result = (s.subtract(s2)).toString();
        assertEquals(result, expecting);

        IntervalSet s3 = IntervalSet.of(5,10);
        expecting = "11..20";
        result = (s.subtract(s3)).toString();
        assertEquals(result, expecting);
    }
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        result = (s.subtract(s3)).toString();
        assertEquals(result, expecting);
    }

    @Test public void testSubtractOfOverlappingRangeFromRight() throws Exception {
        IntervalSet s = IntervalSet.of(10,20);
        IntervalSet s2 = IntervalSet.of(15,25);
        String expecting = "10..14";
        String result = (s.subtract(s2)).toString();
        assertEquals(result, expecting);

        IntervalSet s3 = IntervalSet.of(20,25);
        expecting = "10..19";
        result = (s.subtract(s3)).toString();
        assertEquals(result, expecting);
    }
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