Examples of JFlex.Interval

jflex.Interval
An intervall of characters with basic operations. @author Gerwin Klein @version JFlex 1.4.3, $Revision: 433 $, $Date: 2009-01-31 19:52:34 +1100 (Sat, 31 Jan 2009) $

  public CharClassesTest(String arg0) {
    super(arg0);
  }


  public void testAdd1() {
    IntCharSet set = new IntCharSet(new Interval('a','h'));
    set.add(new Interval('o','z'));
    set.add(new Interval('A','Z'));
    set.add(new Interval('h','o'));
    assertEquals("{ ['A'-'Z']['a'-'z'] }", set.toString());
  }

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    set.add(new Interval('h','o'));
    assertEquals("{ ['A'-'Z']['a'-'z'] }", set.toString());
  }


  public void testAdd2() {
    IntCharSet set = new IntCharSet(new Interval('a','h'));
    set.add(new Interval('o','z'));
    set.add(new Interval('A','Z'));
    set.add(new Interval('i','n'));
    assertEquals("{ ['A'-'Z']['a'-'z'] }", set.toString());
  }

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    set.add(new Interval('i','n'));
    assertEquals("{ ['A'-'Z']['a'-'z'] }", set.toString());
  }


  public void testAdd3() {
    IntCharSet set = new IntCharSet(new Interval('a','h'));
    set.add(new Interval('o','z'));
    set.add(new Interval('A','Z'));
    set.add(new Interval('a','n'));
    assertEquals("{ ['A'-'Z']['a'-'z'] }", set.toString());
  }

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    set.add(new Interval('a','n'));
    assertEquals("{ ['A'-'Z']['a'-'z'] }", set.toString());
  }
  
  public void testMergeLast() {
    IntCharSet set = new IntCharSet(new Interval('a','k'));
    assertEquals("{ ['a'-'k'] }", set.toString());
    set.add('l');
    assertEquals("{ ['a'-'l'] }", set.toString());
  }

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    set.add('l');
    assertEquals("{ ['a'-'l'] }", set.toString());
  }


  public void testAddChar() {
    IntCharSet set = new IntCharSet(new Interval('a','h'));
    set.add(new Interval('o','z'));
    set.add('n');
    set.add('k');
    assertEquals("{ ['a'-'h']['k']['n'-'z'] }", set.toString());
    set.add('i');
    assertEquals("{ ['a'-'i']['k']['n'-'z'] }", set.toString());    
    set.add('j');
    assertEquals("{ ['a'-'k']['n'-'z'] }", set.toString());    
    set.add(new Interval('l','m'));
    assertEquals("{ ['a'-'z'] }", set.toString());    
  }

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    set.add(new Interval('l','m'));
    assertEquals("{ ['a'-'z'] }", set.toString());    
  }


  public void testCopy() {
    IntCharSet set = new IntCharSet(new Interval('a','z'));
    IntCharSet copy = set.copy();
    Interval i = set.getNext();
    i.end = 'h';
    assertEquals("{ ['a'-'h'] }", set.toString());
    assertEquals("{ ['a'-'z'] }", copy.toString());
  }

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    assertEquals("{ ['a'-'h'] }", set.toString());
    assertEquals("{ ['a'-'z'] }", copy.toString());
  }


  public void testCaseless() {
    IntCharSet set = new IntCharSet(new Interval('a','c'));
    set.add(new Interval('h','o'));
    assertEquals("{ ['A'-'C']['H'-'O']['a'-'c']['h'-'o'] }", 
                 set.getCaseless().toString());
  }

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        int end = propertyIntervals.codePointAt(index);
        index += (end <= 0xFFFF ? 1 : 2);
        //TODO: Remove BMP boundary condition
        if (start <= 0xFFFF) {
          //TODO: Change the character type from char to int and remove boundary condition
          set.add(new Interval((char)start, (char)Math.min(end, 0xFFFF)));
        }
      }
      propertyValueIntervals.put(propertyValue, set);
      if (2 == propertyValue.length()) {
        String singleLetter = propertyValue.substring(0, 1);

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  /**
   * Adds intervals for \p{ASCII} and \p{Any} to {@link #propertyValueIntervals}.
   */
  private void bindInvariantIntervals() {
    //TODO: Change the character type from char to int
    IntCharSet asciiSet = new IntCharSet(new Interval('\000', '\u007F'));
    propertyValueIntervals.put(normalize("ASCII"), asciiSet);


    //TODO: Change the character type from char to int
    //TODO: End of interval should be maximumCodePoint instead of '\uFFFF'
    IntCharSet anySet = new IntCharSet(new Interval('\000', '\uFFFF'));
    propertyValueIntervals.put(normalize("Any"), anySet);
  }

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    assertTrue(RegExp.revString("blah").equals("halb"));
  }


  public void testCharClass() {
    Macros m = new Macros();    
    RegExp e1 = new RegExp1(CCLASS, new Interval('a','z'));
    RegExp e2 = new RegExp1(CHAR, 'Z');
    RegExp e3 = new RegExp1(CCLASS, new Interval('0','9'));
    m.insert("macro", e3);
    RegExp s = new RegExp1(STAR, e1);
    RegExp u = new RegExp1(MACROUSE, "macro");    
    RegExp b = new RegExp2(BAR, e2, u);
    assertTrue(e1.isCharClass(m));

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Related Classes of JFlex.Interval

jflex.RegExpTests

JFlex.tests.CharClassesTest

jflex.unicode.UnicodeProperties

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