/* *  gnu/regexp/RETokenChar.java *  Copyright (C) 1998-2001 Wes Biggs * *  This library is free software; you can redistribute it and/or modify *  it under the terms of the GNU Lesser General Public License as published *  by the Free Software Foundation; either version 2.1 of the License, or *  (at your option) any later version. * *  This library is distributed in the hope that it will be useful, *  but WITHOUT ANY WARRANTY; without even the implied warranty of *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the *  GNU Lesser General Public License for more details. * *  You should have received a copy of the GNU Lesser General Public License *  along with this program; if not, write to the Free Software *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */package gnu.regexp;final class RETokenChar extends REToken {  private char[] ch;  private boolean insens;  RETokenChar(int subIndex, char c, boolean ins) {    super(subIndex);    ch = new char [1];    ch[0] = (insens = ins) ? Character.toLowerCase(c) : c;  }  int getMinimumLength() {    return ch.length;  }      boolean match(CharIndexed input, REMatch mymatch) {	int z = ch.length;	char c;	for (int i=0; i<z; i++) {	    c = input.charAt(mymatch.index+i);	    if (( (insens) ? Character.toLowerCase(c) : c ) != ch[i]) {		return false;	    }	}	mymatch.index += z;	return next(input, mymatch);    }  // Overrides REToken.chain() to optimize for strings  boolean chain(REToken next) {    if (next instanceof RETokenChar) {      RETokenChar cnext = (RETokenChar) next;      // assume for now that next can only be one character      int newsize = ch.length + cnext.ch.length;            char[] chTemp = new char [newsize];            System.arraycopy(ch,0,chTemp,0,ch.length);      System.arraycopy(cnext.ch,0,chTemp,ch.length,cnext.ch.length);            ch = chTemp;      return false;    } else return super.chain(next);  }  void dump(StringBuffer os) {    os.append(ch);  }}