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/*******************************************************************************
* Copyright (c) 2007, 2011 BEA Systems, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* wharley@bea.com - initial API and implementation
* philippe.marschall@netcetera.ch - Regression test for 338370
*******************************************************************************/
package org.eclipse.jdt.compiler.apt.tests.processors.filer;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;
import java.util.Set;
import javax.annotation.processing.Filer;
import javax.annotation.processing.Messager;
import javax.annotation.processing.ProcessingEnvironment;
import javax.annotation.processing.RoundEnvironment;
import javax.annotation.processing.SupportedAnnotationTypes;
import javax.annotation.processing.SupportedOptions;
import javax.annotation.processing.SupportedSourceVersion;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;
import javax.tools.Diagnostic;
import javax.tools.Diagnostic.Kind;
import javax.tools.FileObject;
import javax.tools.StandardLocation;
import org.eclipse.jdt.compiler.apt.tests.annotations.GenResource;
import org.eclipse.jdt.compiler.apt.tests.processors.base.BaseProcessor;
/**
* A processor that reads the GenResource annotation and produces the specified Java type
*/
@SupportedAnnotationTypes({ "org.eclipse.jdt.compiler.apt.tests.annotations.GenResource" })
@SupportedSourceVersion(SourceVersion.RELEASE_6)
@SupportedOptions({})
public class FilerProc extends BaseProcessor {
private ProcessingEnvironment _processingEnv;
private Messager _messager;
private Filer _filer;
/* (non-Javadoc)
* @see javax.annotation.processing.AbstractProcessor#init(javax.annotation.processing.ProcessingEnvironment)
*/
@Override
public synchronized void init(ProcessingEnvironment processingEnv) {
super.init(processingEnv);
_processingEnv = processingEnv;
_filer = _processingEnv.getFiler();
_messager = _processingEnv.getMessager();
}
/* (non-Javadoc)
* @see javax.annotation.processing.AbstractProcessor#process(java.util.Set, javax.annotation.processing.RoundEnvironment)
*/
@Override
public boolean process(Set<? extends TypeElement> annotations,
RoundEnvironment roundEnv)
{
if (!annotations.isEmpty()) {
round(annotations, roundEnv);
}
if (roundEnv.processingOver()) {
this.triggerException();
}
return true;
}
/**
* Perform a round of processing
*/
private void round(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
TypeElement genClassAnno = annotations.iterator().next();
Set<? extends Element> annotatedEls = roundEnv.getElementsAnnotatedWith(genClassAnno);
for (Element e : annotatedEls) {
GenResource genClassMirror = e.getAnnotation(GenResource.class);
generateType(genClassMirror, e);
}
}
/**
* @param genResourceMirror
*/
private void generateType(GenResource genResourceMirror, Element annotatedEl) {
// Collect and validate the parameters of the annotation
String pkg = null;
String relativeName = null;
String stringContent = null;
byte[] binaryContent = null;
try {
pkg = genResourceMirror.pkg();
relativeName = genResourceMirror.relativeName();
stringContent = genResourceMirror.stringContent();
binaryContent = genResourceMirror.binaryContent();
} catch (Exception e) {
_messager.printMessage(Diagnostic.Kind.WARNING, "Unable to read @GenResource annotation" + e.getLocalizedMessage(), annotatedEl);
return;
}
if (relativeName.length() == 0) {
// User hasn't specified relativeName yet
_messager.printMessage(Diagnostic.Kind.WARNING, "The relativeName attribute is missing", annotatedEl);
return;
}
FileObject fo = null;
try {
fo = _filer.createResource(StandardLocation.SOURCE_OUTPUT, pkg, relativeName, annotatedEl);
} catch (IOException e) {
_messager.printMessage(Diagnostic.Kind.WARNING,
"Unable to open resource file for pkg " + pkg + ", relativeName " +
relativeName + ": " + e.getLocalizedMessage(), annotatedEl);
return;
}
if (null == fo) {
_messager.printMessage(Diagnostic.Kind.WARNING, "Filer.createResource() returned null", annotatedEl);
return;
}
if (stringContent.isEmpty()) {
// Binary content. Open an OutputStream.
OutputStream os = null;
try {
os = fo.openOutputStream();
os.write(binaryContent);
}
catch (Exception e) {
_messager.printMessage(Kind.ERROR, e.getLocalizedMessage(), annotatedEl);
return;
}
finally {
try {
os.close();
} catch (IOException e) {
_messager.printMessage(Kind.ERROR, e.getLocalizedMessage(), annotatedEl);
}
}
}
else {
// String content. Open a Writer.
Writer w = null;
try {
w = fo.openWriter();
w.write(stringContent);
}
catch (Exception e) {
_messager.printMessage(Kind.ERROR, e.getLocalizedMessage(), annotatedEl);
return;
}
finally {
try {
w.close();
} catch (IOException e) {
_messager.printMessage(Kind.ERROR, e.getLocalizedMessage(), annotatedEl);
}
}
}
}
private void triggerException() {
Messager messenger = this.processingEnv.getMessager();
try {
_filer.getResource(StandardLocation.SOURCE_OUTPUT, "", "not-existing.txt");
reportError("failed");
} catch (FileNotFoundException e) {
reportSuccess();
messenger.printMessage(Diagnostic.Kind.NOTE, "FileNotFoundException");
} catch (IOException e) {
reportSuccess();
messenger.printMessage(Diagnostic.Kind.NOTE, e.getClass().getName());
}
}
}
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