| Clover coverage report - DrJava Test Coverage (drjava-20110828-r5448) |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| ClassAndInterfaceFinder.java | 66.7% | 74% | 90% | 73.8% |
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| 1 | /*BEGIN_COPYRIGHT_BLOCK | |
| 2 | * | |
| 3 | * Copyright (c) 2001-2010, JavaPLT group at Rice University (drjava@rice.edu) | |
| 4 | * All rights reserved. | |
| 5 | * | |
| 6 | * Redistribution and use in source and binary forms, with or without | |
| 7 | * modification, are permitted provided that the following conditions are met: | |
| 8 | * * Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * * Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * * Neither the names of DrJava, the JavaPLT group, Rice University, nor the | |
| 14 | * names of its contributors may be used to endorse or promote products | |
| 15 | * derived from this software without specific prior written permission. | |
| 16 | * | |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 21 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 22 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 24 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 25 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 26 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 | * | |
| 29 | * This software is Open Source Initiative approved Open Source Software. | |
| 30 | * Open Source Initative Approved is a trademark of the Open Source Initiative. | |
| 31 | * | |
| 32 | * This file is part of DrJava. Download the current version of this project | |
| 33 | * from http://www.drjava.org/ or http://sourceforge.net/projects/drjava/ | |
| 34 | * | |
| 35 | * END_COPYRIGHT_BLOCK*/ | |
| 36 | ||
| 37 | package edu.rice.cs.drjava.model; | |
| 38 | ||
| 39 | import java.io.*; | |
| 40 | ||
| 41 | /** Class with getClassName method for finding the name of the first class or | |
| 42 | * interface defined in a file */ | |
| 43 | ||
| 44 | public class ClassAndInterfaceFinder { | |
| 45 | ||
| 46 | private StreamTokenizer tokenizer; | |
| 47 | ||
| 48 | /* constructor to support unit testing */ | |
| 49 | 4 | public ClassAndInterfaceFinder(Reader r) { |
| 50 | 4 | initialize(r); |
| 51 | } | |
| 52 | ||
| 53 | /* normal constructor */ | |
| 54 | 0 | public ClassAndInterfaceFinder(File f) { |
| 55 | 0 | Reader r = null; |
| 56 | 0 | try { |
| 57 | 0 | try { r = new FileReader(f); } |
| 58 | catch(FileNotFoundException e) { /* create a Reader for an "empty" file */ | |
| 59 | 0 | r = new StringReader(""); |
| 60 | } | |
| 61 | 0 | initialize(r); |
| 62 | } | |
| 63 | finally { | |
| 64 | 0 | try { |
| 65 | 0 | if (r != null) r.close(); |
| 66 | } | |
| 67 | catch(IOException ioe) { /* ignore exception on close */ } | |
| 68 | } | |
| 69 | } | |
| 70 | ||
| 71 | 4 | private void initialize(Reader r) { |
| 72 | ||
| 73 | 4 | tokenizer = new StreamTokenizer(r); |
| 74 | 4 | tokenizer.slashSlashComments(true); |
| 75 | 4 | tokenizer.slashStarComments(true); |
| 76 | 4 | tokenizer.lowerCaseMode(false); |
| 77 | 4 | tokenizer.wordChars('_','_'); |
| 78 | 4 | tokenizer.wordChars('.','.'); |
| 79 | } | |
| 80 | ||
| 81 | /** Finds the the name of the first class or interface defined in this file. | |
| 82 | * @return the String containing this name or "" if no such class or interface | |
| 83 | * is found. | |
| 84 | */ | |
| 85 | 3 | public String getClassOrInterfaceName() { return getName(true); } |
| 86 | ||
| 87 | /** Finds the the name of the first class (excluding interfaces) defined in this file. | |
| 88 | * @return the String containing this name or "" if no such class or interface | |
| 89 | * is found. | |
| 90 | */ | |
| 91 | 1 | public String getClassName() { return getName(false); } |
| 92 | ||
| 93 | /** Finds the the name of the first class or interface in this file, respecting the | |
| 94 | * value of the interfaceOK flag. | |
| 95 | * I hate flags but did not see a simpler way to avoid duplicated code. | |
| 96 | * This method has package (rather than private) visibility for testing purposes. | |
| 97 | */ | |
| 98 | 4 | String getName(boolean interfaceOK) { |
| 99 | 4 | try { |
| 100 | 4 | String package_name = ""; |
| 101 | 4 | int tokenType; |
| 102 | ||
| 103 | // find the "class"/"interface" or "package" keyword (may encounter EOF) | |
| 104 | 4 | do { |
| 105 | 17 | tokenType = tokenizer.nextToken(); |
| 106 | 17 | } while(! isClassOrInterfaceWord(tokenType,interfaceOK) && ! isPackageWord(tokenType)); |
| 107 | ||
| 108 | 1 | if (isEOF(tokenType)) return ""; |
| 109 | ||
| 110 | /* Save opening keyword */ | |
| 111 | 3 | String keyword = tokenizer.sval; |
| 112 | ||
| 113 | // find the name of the class or package (may encounter EOF) | |
| 114 | 3 | do { |
| 115 | 3 | tokenType = tokenizer.nextToken(); |
| 116 | 3 | } while (! isWord(tokenType)); |
| 117 | ||
| 118 | 0 | if (isEOF(tokenType)) return ""; |
| 119 | ||
| 120 | 1 | if (keyword.equals("class")) return tokenizer.sval; // a class defined without a package |
| 121 | ||
| 122 | 1 | if (interfaceOK && keyword.equals("interface")) return tokenizer.sval; // an interface without a package |
| 123 | ||
| 124 | 1 | if (keyword.equals("package")) package_name = tokenizer.sval; |
| 125 | ||
| 126 | // find the "class" keyword | |
| 127 | 2 | do { tokenType = tokenizer.nextToken(); } while (! isClassOrInterfaceWord(tokenType, interfaceOK)); |
| 128 | ||
| 129 | // find the name of the class or interface | |
| 130 | 1 | do { tokenType = tokenizer.nextToken(); } while (! isWord(tokenType)); |
| 131 | ||
| 132 | 0 | if (tokenType == StreamTokenizer.TT_EOF) return ""; |
| 133 | ||
| 134 | 1 | if (package_name.length() > 0) return package_name + "." + tokenizer.sval; |
| 135 | ||
| 136 | 0 | return tokenizer.sval; |
| 137 | ||
| 138 | } catch(IOException e) { | |
| 139 | 0 | return ""; |
| 140 | } | |
| 141 | } | |
| 142 | ||
| 143 | /** returns true iff the token is a word (as defined by StreamTokenizer) | |
| 144 | */ | |
| 145 | 4 | private static boolean isWord(int tt) { return tt == StreamTokenizer.TT_WORD || isEOF(tt); } |
| 146 | ||
| 147 | 26 | private static boolean isEOF(int tt) { return tt == StreamTokenizer.TT_EOF; } |
| 148 | ||
| 149 | ||
| 150 | /** returns true iff the token is "class" or we're at the end of the file | |
| 151 | */ | |
| 152 | 19 | private boolean isClassOrInterfaceWord(int tt, boolean interfaceOK) { |
| 153 | 19 | return isEOF(tt) || |
| 154 | (tt == StreamTokenizer.TT_WORD && tokenizer.sval.equals("class")) || | |
| 155 | (tt == StreamTokenizer.TT_WORD && interfaceOK && tokenizer.sval.equals("interface")); | |
| 156 | } | |
| 157 | ||
| 158 | /** returns true iff the token is "package" or we're at the end of the file | |
| 159 | */ | |
| 160 | 14 | private boolean isPackageWord(int tt) { |
| 161 | 14 | return (tt == StreamTokenizer.TT_WORD && tokenizer.sval.equals("package") || |
| 162 | tt == StreamTokenizer.TT_EOF); | |
| 163 | } | |
| 164 | } | |
| 165 | ||
| 166 | ||
| 167 |
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