001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2009 SonarSource SA 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * Sonar is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020 package org.sonar.squid.text.colorizer; 021 022 import org.sonar.squid.text.CodeReader; 023 import org.sonar.squid.text.EndTokenMatcher; 024 025 public class StringTokenizer extends Tokenizer { 026 027 public StringTokenizer(String tagBefore, String tagAfter) { 028 super(tagBefore, tagAfter); 029 } 030 031 public StringTokenizer() { 032 super("", ""); 033 } 034 035 @Override 036 public boolean hasNextToken(CodeReader code) { 037 return code.peek() == '\'' || code.peek() == '\"'; 038 } 039 040 @Override 041 public String nextToken(CodeReader code) { 042 int firstChar = code.peek(); 043 String comment = code.readTo(new EndCommentMatcher(firstChar, code)); 044 return tagBefore + comment + tagAfter; 045 } 046 047 private class EndCommentMatcher implements EndTokenMatcher { 048 049 private final int firstChar; 050 private final CodeReader code; 051 private int stringLength = 0; 052 053 public EndCommentMatcher(int firstChar, CodeReader code) { 054 this.firstChar = firstChar; 055 this.code = code; 056 } 057 058 public boolean match(int endFlag) { 059 return (code.lastChar() == firstChar && code.lastChar(2) != '\\' && ++stringLength > 1); 060 } 061 } 062 }