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BasicToken.java

/* *******************************************************************
 * Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
 * All rights reserved. 
 * This program and the accompanying materials are made available 
 * under the terms of the Eclipse Public License v1.0 
 * which accompanies this distribution and is available at 
 * http://www.eclipse.org/legal/epl-v10.html 
 *  
 * Contributors: 
 *     PARC     initial implementation 
 * ******************************************************************/


package org.aspectj.weaver.patterns;


public final class BasicToken implements IToken {
      private String value;
      private boolean isIdentifier;
      private String literalKind;

      private int start;
      private int end;
      
      public static BasicToken makeOperator(String value, int start, int end) {
            return new BasicToken(value.intern(), false, null, start, end);
      }
      
      public static BasicToken makeIdentifier(String value, int start, int end) {
            return new BasicToken(value, true, null, start, end);
      }
      
      public static BasicToken makeLiteral(String value, String kind, int start, int end) {
            return new BasicToken(value, false, kind.intern(), start, end);
      }
      
      
      private BasicToken(String value, boolean isIdentifier, String literalKind, int start, int end) {
            this.value = value;
            this.isIdentifier = isIdentifier;
            this.literalKind = literalKind;
            this.start = start;
            this.end = end;
      }
      
      public int getStart() { return start; }
      public int getEnd() { return end; }
      public String getFileName() { return "unknown"; }
      
      public String getString() {
            return value;
      }

      public boolean isIdentifier() {
            return isIdentifier;
      }
      
      public Pointcut maybeGetParsedPointcut() {
            return null;
      }

      
      
      public String toString() {
            String s;
            if (isIdentifier) s = value;
            else s = "'" + value + "'";
            
            return s + "@" + start + ":" + end;
      }
      public String getLiteralKind() {
            return literalKind;
      }

}

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