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comparison: build/annotationProcessors/classloader/JarClassIterator.java
build/annotationProcessors/classloader/JarClassIterator.java
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:c1cb4260dfe6 |
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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 package org.mozilla.gecko.annotationProcessors.classloader; | |
| 6 | |
| 7 import java.lang.annotation.Annotation; | |
| 8 import java.lang.reflect.InvocationTargetException; | |
| 9 import java.lang.reflect.Method; | |
| 10 import java.util.Iterator; | |
| 11 | |
| 12 /** | |
| 13 * Class for iterating over an IterableJarLoadingURLClassLoader's classes. | |
| 14 */ | |
| 15 public class JarClassIterator implements Iterator<ClassWithOptions> { | |
| 16 private IterableJarLoadingURLClassLoader mTarget; | |
| 17 private Iterator<String> mTargetClassListIterator; | |
| 18 | |
| 19 public JarClassIterator(IterableJarLoadingURLClassLoader aTarget) { | |
| 20 mTarget = aTarget; | |
| 21 mTargetClassListIterator = aTarget.classNames.iterator(); | |
| 22 } | |
| 23 | |
| 24 @Override | |
| 25 public boolean hasNext() { | |
| 26 return mTargetClassListIterator.hasNext(); | |
| 27 } | |
| 28 | |
| 29 @Override | |
| 30 public ClassWithOptions next() { | |
| 31 String className = mTargetClassListIterator.next(); | |
| 32 try { | |
| 33 Class<?> ret = mTarget.loadClass(className); | |
| 34 final String canonicalName; | |
| 35 | |
| 36 // Incremental builds can leave stale classfiles in the jar. Such classfiles will cause | |
| 37 // an exception at this point. We can safely ignore these classes - they cannot possibly | |
| 38 // ever be loaded as they conflict with their parent class and will be killed by Proguard | |
| 39 // later on anyway. | |
| 40 try { | |
| 41 canonicalName = ret.getCanonicalName(); | |
| 42 } catch (IncompatibleClassChangeError e) { | |
| 43 return next(); | |
| 44 } | |
| 45 | |
| 46 if (canonicalName == null || "null".equals(canonicalName)) { | |
| 47 // Anonymous inner class - unsupported. | |
| 48 return next(); | |
| 49 } else { | |
| 50 String generateName = null; | |
| 51 for (Annotation annotation : ret.getAnnotations()) { | |
| 52 Class<?> annotationType = annotation.annotationType(); | |
| 53 if (annotationType.getCanonicalName().equals("org.mozilla.gecko.mozglue.generatorannotations.GeneratorOptions")) { | |
| 54 try { | |
| 55 // Determine the explicitly-given name of the stub to generate, if any. | |
| 56 final Method generateNameMethod = annotationType.getDeclaredMethod("generatedClassName"); | |
| 57 generateNameMethod.setAccessible(true); | |
| 58 generateName = (String) generateNameMethod.invoke(annotation); | |
| 59 break; | |
| 60 } catch (NoSuchMethodException e) { | |
| 61 System.err.println("Unable to find expected field on GeneratorOptions annotation. Did the signature change?"); | |
| 62 e.printStackTrace(System.err); | |
| 63 System.exit(3); | |
| 64 } catch (IllegalAccessException e) { | |
| 65 System.err.println("IllegalAccessException reading fields on GeneratorOptions annotation. Seems the semantics of Reflection have changed..."); | |
| 66 e.printStackTrace(System.err); | |
| 67 System.exit(4); | |
| 68 } catch (InvocationTargetException e) { | |
| 69 System.err.println("InvocationTargetException reading fields on GeneratorOptions annotation. This really shouldn't happen."); | |
| 70 e.printStackTrace(System.err); | |
| 71 System.exit(5); | |
| 72 } | |
| 73 } | |
| 74 } | |
| 75 if (generateName == null) { | |
| 76 generateName = ret.getSimpleName(); | |
| 77 } | |
| 78 return new ClassWithOptions(ret, generateName); | |
| 79 } | |
| 80 } catch (ClassNotFoundException e) { | |
| 81 System.err.println("Unable to enumerate class: " + className + ". Corrupted jar file?"); | |
| 82 e.printStackTrace(); | |
| 83 System.exit(2); | |
| 84 } | |
| 85 return null; | |
| 86 } | |
| 87 | |
| 88 @Override | |
| 89 public void remove() { | |
| 90 throw new UnsupportedOperationException("Removal of classes from iterator not supported."); | |
| 91 } | |
| 92 } |
