Examples of org.antlr.misc.IntervalSet

org.antlr.misc.IntervalSet
A set of integers that relies on ranges being common to do "run-length-encoded" like compression (if you view an IntSet like a BitSet with runs of 0s and 1s). Only ranges are recorded so that a few ints up near value 1000 don't cause massive bitsets, just two integer intervals. element values may be negative. Useful for sets of EPSILON and EOF. 0..9 char range is index pair ['\u0030','\u0039']. Multiple ranges are encoded with multiple index pairs. Isolated elements are encoded with an index pair where both intervals are the same. The ranges are ordered and disjoint so that 2..6 appears before 101..103.

        result = (s.subtract(s3)).toString();
        assertEquals(result, expecting);
    }


    @Test public void testSubtractOfCompletelyCoveredRange() throws Exception {
        IntervalSet s = IntervalSet.of(10,20);
        IntervalSet s2 = IntervalSet.of(1,25);
        String expecting = "{}";
        String result = (s.subtract(s2)).toString();
        assertEquals(result, expecting);
    }

View Full Code Here

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


    @Test public void testSubtractOfRangeSpanningMultipleRanges() throws Exception {
        IntervalSet s = IntervalSet.of(10,20);
        s.add(30,40);
        s.add(50,60); // s has 3 ranges now: 10..20, 30..40, 50..60
        IntervalSet s2 = IntervalSet.of(5,55); // covers one and touches 2nd range
        String expecting = "56..60";
        String result = (s.subtract(s2)).toString();
        assertEquals(result, expecting);


        IntervalSet s3 = IntervalSet.of(15,55); // touches both
        expecting = "{10..14, 56..60}";
        result = (s.subtract(s3)).toString();
        assertEquals(result, expecting);
    }

View Full Code Here


  /** The following was broken:
     {0..113, 115..65534}-{0..115, 117..65534}=116..65534
   */
  @Test public void testSubtractOfWackyRange() throws Exception {
    IntervalSet s = IntervalSet.of(0,113);
    s.add(115,200);
    IntervalSet s2 = IntervalSet.of(0,115);
    s2.add(117,200);
    String expecting = "116";
    String result = (s.subtract(s2)).toString();
    assertEquals(result, expecting);
  }

View Full Code Here

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


    @Test public void testSimpleEquals() throws Exception {
        IntervalSet s = IntervalSet.of(10,20);
        IntervalSet s2 = IntervalSet.of(10,20);
        Boolean expecting = new Boolean(true);
        Boolean result = new Boolean(s.equals(s2));
        assertEquals(result, expecting);


        IntervalSet s3 = IntervalSet.of(15,55);
        expecting = new Boolean(false);
        result = new Boolean(s.equals(s3));
        assertEquals(result, expecting);
    }

View Full Code Here

        result = new Boolean(s.equals(s3));
        assertEquals(result, expecting);
    }


    @Test public void testEquals() throws Exception {
        IntervalSet s = IntervalSet.of(10,20);
        s.add(2);
        s.add(499,501);
        IntervalSet s2 = IntervalSet.of(10,20);
        s2.add(2);
        s2.add(499,501);
        Boolean expecting = new Boolean(true);
        Boolean result = new Boolean(s.equals(s2));
        assertEquals(result, expecting);


        IntervalSet s3 = IntervalSet.of(10,20);
        s3.add(2);
        expecting = new Boolean(false);
        result = new Boolean(s.equals(s3));
        assertEquals(result, expecting);
    }

View Full Code Here

        result = new Boolean(s.equals(s3));
        assertEquals(result, expecting);
    }


    @Test public void testSingleElementMinusDisjointSet() throws Exception {
        IntervalSet s = IntervalSet.of(15,15);
        IntervalSet s2 = IntervalSet.of(1,5);
        s2.add(10,20);
        String expecting = "{}"; // 15 - {1..5, 10..20} = {}
        String result = s.subtract(s2).toString();
        assertEquals(result, expecting);
    }

View Full Code Here

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


    @Test public void testMembership() throws Exception {
        IntervalSet s = IntervalSet.of(15,15);
        s.add(50,60);
        assertTrue(!s.member(0));
        assertTrue(!s.member(20));
        assertTrue(!s.member(100));
        assertTrue(s.member(15));
        assertTrue(s.member(55));
        assertTrue(s.member(50));
        assertTrue(s.member(60));
    }

View Full Code Here

        assertTrue(s.member(60));
    }


    // {2,15,18} & 10..20
    @Test public void testIntersectionWithTwoContainedElements() throws Exception {
        IntervalSet s = IntervalSet.of(10,20);
        IntervalSet s2 = IntervalSet.of(2,2);
        s2.add(15);
        s2.add(18);
        String expecting = "{15, 18}";
        String result = (s.and(s2)).toString();
        assertEquals(result, expecting);
    }

View Full Code Here

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


    @Test public void testIntersectionWithTwoContainedElementsReversed() throws Exception {
        IntervalSet s = IntervalSet.of(10,20);
        IntervalSet s2 = IntervalSet.of(2,2);
        s2.add(15);
        s2.add(18);
        String expecting = "{15, 18}";
        String result = (s2.and(s)).toString();
        assertEquals(result, expecting);
    }

View Full Code Here

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


    @Test public void testComplement() throws Exception {
        IntervalSet s = IntervalSet.of(100,100);
        s.add(101,101);
        IntervalSet s2 = IntervalSet.of(100,102);
        String expecting = "102";
        String result = (s.complement(s2)).toString();
        assertEquals(result, expecting);
    }

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of org.antlr.misc.IntervalSet

org.antlr.analysis.DFA

org.antlr.analysis.Label

org.antlr.analysis.LL1DFA

org.antlr.analysis.LookaheadSet

org.antlr.test.TestIntervalSet

org.antlr.tool.Grammar

org.antlr.tool.RandomPhrase

java.util.Iterator

java.util.List

java.util.ArrayList

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.