001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2011 SonarSource 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.colorizer; 021 022 import org.sonar.channel.CodeReader; 023 import org.sonar.channel.EndMatcher; 024 025 /** 026 * Detect Java constant 027 */ 028 public class JavaConstantTokenizer extends Tokenizer { 029 030 private final String tagBefore; 031 private final String tagAfter; 032 private final static int DOT = '.'; 033 034 public JavaConstantTokenizer(String tagBefore, String tagAfter) { 035 this.tagBefore = tagBefore; 036 this.tagAfter = tagAfter; 037 } 038 039 private boolean hasNextToken(CodeReader code) { 040 int lastChar = code.lastChar(); 041 if (isJavaConstantStart(code.peek()) && !Character.isJavaIdentifierPart(lastChar) && !Character.isJavaIdentifierStart(lastChar) 042 && lastChar != DOT) { 043 String constant = code.peekTo(endTokenMatcher); 044 int nextCharAfterConstant = code.peek(constant.length() + 1)[constant.length()]; 045 if (nextCharAfterConstant != 0 && Character.isJavaIdentifierPart(nextCharAfterConstant)) { 046 return false; 047 } 048 return true; 049 } 050 return false; 051 } 052 053 @Override 054 public boolean consume(CodeReader code, HtmlCodeBuilder codeBuilder) { 055 if (hasNextToken(code)) { 056 codeBuilder.appendWithoutTransforming(tagBefore); 057 code.popTo(endTokenMatcher, codeBuilder); 058 codeBuilder.appendWithoutTransforming(tagAfter); 059 return true; 060 } else { 061 return false; 062 } 063 } 064 065 private boolean isJavaConstantStart(int character) { 066 return Character.isUpperCase(character); 067 } 068 069 private boolean isJavaConstantPart(int character) { 070 return Character.isUpperCase(character) || character == '_' || character == '-' || Character.isDigit(character); 071 } 072 073 private EndMatcher endTokenMatcher = new EndMatcher() { 074 075 public boolean match(int endFlag) { 076 return !isJavaConstantPart(endFlag); 077 } 078 }; 079 080 }