Examples of de.susebox.jtopas.spi.PatternHandler.matches()

de.susebox.jtopas.spi.PatternHandler.matches()

This method checks if the start of a character range given through the {@link DataProvider} matches a pattern. An implementation should usea {@link de.susebox.jtopas.TokenizerException} to report problems.
The method returns null if the beginning of the character range doesn't match a pattern known to the PatternHandler. Otherwise it returns an object with the implemented interface {@link PatternHandler.Result}.
The pattern check is repeated if the method returns a match that is exactly as long as the given data range and more data is available. Since it is probably a rare case, that where are not enough data to find a complete or no match, the overhead of a repeated check on part of the data is neglected.
If a pattern handler has more than one pattern that could be applied to the given data, it should return the longest possible match. @param dataProvider the source to get the data from @param lengthOfMatch if a match is found, the method places the length ofit into the first element of this array @return a {@link PatternHandler.Result} object or null if nomatch was found @throws TokenizerException generic exception @throws NullPointerException if no {@link DataProvider} is given

      String                image    = _patternMatchingStrings[index];
      char[]                complete = { ';' };
      
      _currDataLength = image.length();
      System.arraycopy(image.toCharArray(), 0, _currData, _currStartPos, _currDataLength);
      result = ph.matches(new LocalDataProvider(this));
      assertTrue("Pattern matching failed for: " + image, result != null );
      assertTrue("Pattern matching returned wrong length: " + result.getLengthOfMatch(), result.getLengthOfMatch() == image.length());
      System.arraycopy(complete, 0, _currData, _currStartPos + _currDataLength, complete.length);
      _currDataLength += complete.length;
      result = ph.matches(new LocalDataProvider(this));

      result = ph.matches(new LocalDataProvider(this));
      assertTrue("Pattern matching failed for: " + image, result != null );
      assertTrue("Pattern matching returned wrong length: " + result.getLengthOfMatch(), result.getLengthOfMatch() == image.length());
      System.arraycopy(complete, 0, _currData, _currStartPos + _currDataLength, complete.length);
      _currDataLength += complete.length;
      result = ph.matches(new LocalDataProvider(this));
      assertTrue("Pattern matching failed for: " + image, result != null);
      assertTrue("Pattern matching returned wrong length: " + result.getLengthOfMatch(), result.getLengthOfMatch() == image.length());
      _currStartPos   += _currDataLength;
    }
  }

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