1 /* |
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2 * Copyright (c) 2004, 2007, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 |
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25 import com.sun.mirror.apt.*; |
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26 import com.sun.mirror.declaration.*; |
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27 import com.sun.mirror.type.*; |
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28 import com.sun.mirror.util.*; |
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29 |
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30 import java.util.Collection; |
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31 import java.util.Set; |
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32 import java.util.Arrays; |
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33 import java.util.Collections; |
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34 import java.io.*; |
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35 |
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36 public class Touch implements AnnotationProcessorFactory { |
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37 static class TouchProc implements AnnotationProcessor { |
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38 AnnotationProcessorEnvironment ape; |
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39 TouchProc(AnnotationProcessorEnvironment ape) { |
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40 this.ape = ape; |
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41 } |
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42 |
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43 public void process() { |
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44 boolean result; |
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45 // Only run the processor on the initial apt invocation |
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46 Collection<TypeDeclaration> tdecls = ape.getSpecifiedTypeDeclarations(); |
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47 |
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48 if (tdecls.size() == 1) { |
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49 for(TypeDeclaration decl: tdecls) { |
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50 if (! decl.getSimpleName().equals("Touch") ) |
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51 return; |
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52 } |
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53 |
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54 try { |
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55 // Create temporary file |
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56 java.io.File f = new java.io.File("touched"); |
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57 result = f.createNewFile(); |
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58 |
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59 |
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60 Filer filer = ape.getFiler(); |
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61 |
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62 // Create new source file |
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63 PrintWriter pw = filer.createSourceFile("HelloWorld"); |
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64 pw.println("public class HelloWorld {"); |
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65 pw.println(" public static void main(String argv[]) {"); |
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66 pw.println(" System.out.println(\"Hello World\");"); |
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67 pw.println(" }"); |
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68 pw.println("}"); |
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69 |
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70 // Create new class file and copy Empty.class |
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71 OutputStream os = filer.createClassFile("Empty"); |
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72 FileInputStream fis = new FileInputStream("Empty.clazz"); |
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73 int datum; |
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74 while((datum = fis.read()) != -1) |
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75 os.write(datum); |
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76 |
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77 } catch (java.io.IOException e) { |
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78 result = false; |
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79 } |
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80 if (!result) |
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81 throw new RuntimeException("touched file already exists or other error"); |
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82 } |
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83 |
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84 } |
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85 |
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86 } |
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87 |
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88 static Collection<String> supportedTypes; |
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89 static { |
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90 String types[] = {"*"}; |
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91 supportedTypes = Collections.unmodifiableCollection(Arrays.asList(types)); |
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92 } |
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93 |
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94 static Collection<String> supportedOptions; |
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95 static { |
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96 String options[] = {""}; |
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97 supportedOptions = Collections.unmodifiableCollection(Arrays.asList(options)); |
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98 } |
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99 |
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100 public Collection<String> supportedOptions() { |
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101 return supportedOptions; |
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102 } |
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103 |
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104 public Collection<String> supportedAnnotationTypes() { |
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105 return supportedTypes; |
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106 } |
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107 |
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108 /* |
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109 * Return the same processor independent of what annotations are |
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110 * present, if any. |
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111 */ |
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112 public AnnotationProcessor getProcessorFor(Set<AnnotationTypeDeclaration> atds, |
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113 AnnotationProcessorEnvironment env) { |
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114 return new TouchProc(env); |
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115 } |
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116 } |
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