/*
[The "BSD licence"]
Copyright (c) 2005-2006 Terence Parr
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
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2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. The name of the author may not be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.antlr.test;
import org.antlr.analysis.Label;
import org.antlr.misc.IntervalSet;
import java.util.ArrayList;
import java.util.List;
public class TestIntervalSet extends BaseTest {
/** Public default constructor used by TestRig */
public TestIntervalSet() {
}
public void testSingleElement() throws Exception {
IntervalSet s = IntervalSet.of(99);
String expecting = "99";
assertEquals(s.toString(), expecting);
}
public void testIsolatedElements() throws Exception {
IntervalSet s = new IntervalSet();
s.add(1);
s.add('z');
s.add('\uFFF0');
String expecting = "{1, 122, 65520}";
assertEquals(s.toString(), expecting);
}
public void testMixedRangesAndElements() throws Exception {
IntervalSet s = new IntervalSet();
s.add(1);
s.add('a','z');
s.add('0','9');
String expecting = "{1, 48..57, 97..122}";
assertEquals(s.toString(), expecting);
}
public void testSimpleAnd() throws Exception {
IntervalSet s = IntervalSet.of(10,20);
IntervalSet s2 = IntervalSet.of(13,15);
String expecting = "13..15";
String result = (s.and(s2)).toString();
assertEquals(result, expecting);
}
public void testRangeAndIsolatedElement() throws Exception {
IntervalSet s = IntervalSet.of('a','z');
IntervalSet s2 = IntervalSet.of('d');
String expecting = "100";
String result = (s.and(s2)).toString();
assertEquals(result, expecting);
}
public void testEmptyIntersection() throws Exception {
IntervalSet s = IntervalSet.of('a','z');
IntervalSet s2 = IntervalSet.of('0','9');
String expecting = "{}";
String result = (s.and(s2)).toString();
assertEquals(result, expecting);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
/** The following was broken:
{0..113, 115..65534}-{0..115, 117..65534}=116..65534
*/
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);
}
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);
}
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);
}
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);
}
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));
}
// {2,15,18} & 10..20
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);
}
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);
}
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);
}
public void testComplement2() throws Exception {
IntervalSet s = IntervalSet.of(100,101);
IntervalSet s2 = IntervalSet.of(100,102);
String expecting = "102";
String result = (s.complement(s2)).toString();
assertEquals(result, expecting);
}
public void testComplement3() throws Exception {
IntervalSet s = IntervalSet.of(1,96);
s.add(99,65534);
String expecting = "97..98";
String result = (s.complement(1,Label.MAX_CHAR_VALUE)).toString();
assertEquals(result, expecting);
}
public void testMergeOfRangesAndSingleValues() throws Exception {
// {0..41, 42, 43..65534}
IntervalSet s = IntervalSet.of(0,41);
s.add(42);
s.add(43,65534);
String expecting = "0..65534";
String result = s.toString();
assertEquals(result, expecting);
}
public void testMergeOfRangesAndSingleValuesReverse() throws Exception {
IntervalSet s = IntervalSet.of(43,65534);
s.add(42);
s.add(0,41);
String expecting = "0..65534";
String result = s.toString();
assertEquals(result, expecting);
}
public void testMergeWhereAdditionMergesTwoExistingIntervals() throws Exception {
// 42, 10, {0..9, 11..41, 43..65534}
IntervalSet s = IntervalSet.of(42);
s.add(10);
s.add(0,9);
s.add(43,65534);
s.add(11,41);
String expecting = "0..65534";
String result = s.toString();
assertEquals(result, expecting);
}
public void testMergeWithDoubleOverlap() throws Exception {
IntervalSet s = IntervalSet.of(1,10);
s.add(20,30);
s.add(5,25); // overlaps two!
String expecting = "1..30";
String result = s.toString();
assertEquals(result, expecting);
}
public void testSize() throws Exception {
IntervalSet s = IntervalSet.of(20,30);
s.add(50,55);
s.add(5,19);
String expecting = "32";
String result = String.valueOf(s.size());
assertEquals(result, expecting);
}
public void testToList() throws Exception {
IntervalSet s = IntervalSet.of(20,25);
s.add(50,55);
s.add(5,5);
String expecting = "[5, 20, 21, 22, 23, 24, 25, 50, 51, 52, 53, 54, 55]";
List foo = new ArrayList();
String result = String.valueOf(s.toList());
assertEquals(result, expecting);
}
/** The following was broken:
{'\u0000'..'s', 'u'..'\uFFFE'} & {'\u0000'..'q', 's'..'\uFFFE'}=
{'\u0000'..'q', 's'}!!!! broken...
'q' is 113 ascii
'u' is 117
*/
public void testNotRIntersectionNotT() throws Exception {
IntervalSet s = IntervalSet.of(0,'s');
s.add('u',200);
IntervalSet s2 = IntervalSet.of(0,'q');
s2.add('s',200);
String expecting = "{0..113, 115, 117..200}";
String result = (s.and(s2)).toString();
assertEquals(result, expecting);
}
}