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/*******************************************************************************
* Copyright (c) 2004 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.aspectj.ajdt.internal.core.builder;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import org.aspectj.bridge.IMessageHandler;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.bcel.ClassPathManager;
import org.aspectj.org.eclipse.jdt.core.compiler.CharOperation;
import org.aspectj.org.eclipse.jdt.internal.compiler.classfmt.ClassFileReader;
import org.aspectj.org.eclipse.jdt.internal.compiler.env.IBinaryType;
import org.aspectj.org.eclipse.jdt.internal.compiler.env.INameEnvironment;
import org.aspectj.org.eclipse.jdt.internal.compiler.env.NameEnvironmentAnswer;
/**
* @author colyer
*
* Provide a type lookup environment for the weaver, without having to convert
* the various eclipse paths into their external form.
*/
public class EclipseClassPathManager extends ClassPathManager {
private INameEnvironment nameEnv;
public EclipseClassPathManager(INameEnvironment env) {
this.nameEnv = env;
}
// class path manager will be used by weaver across multiple compiles,
// whereas a name environment may be constructed per-compile.
public void setNameEnvironment(INameEnvironment env) {
this.nameEnv = env;
}
/* (non-Javadoc)
* @see org.aspectj.weaver.bcel.ClassPathManager#addPath(java.lang.String, org.aspectj.bridge.IMessageHandler)
*/
public void addPath(String name, IMessageHandler handler) {
throw new UnsupportedOperationException("Can't add paths to an *Eclipse*ClassPathManager.");
}
/* (non-Javadoc)
* @see org.aspectj.weaver.bcel.ClassPathManager#find(org.aspectj.weaver.UnresolvedType)
*/
public ClassFile find(UnresolvedType type) {
ClassFile cf = null;
String name = type.getName();
if (name.endsWith(".class")) {
name = name.substring(0,name.length() - ".class".length());
}
char[][] cname = CharOperation.splitOn('.',name.toCharArray());
NameEnvironmentAnswer answer = nameEnv.findType(cname);
if (answer == null || !answer.isBinaryType()) {
return null;
} else {
IBinaryType binType = answer.getBinaryType();
// XXX - but better than the alternative hacks
if (binType instanceof ClassFileReader) {
ClassFileReader cfr = (ClassFileReader) binType;
cf = new ClassFileReaderBackedClassFile(cfr);
} else {
throw new IllegalArgumentException(
"I'm only geared up to handle ClassFileReaders, and you gave me a " +
binType.getClass().getName());
}
return cf;
}
}
/* (non-Javadoc)
* @see org.aspectj.weaver.bcel.ClassPathManager#getAllClassFiles()
*/
public List getAllClassFiles() {
throw new UnsupportedOperationException("I don't implement getAllClassFiles()");
//return Collections.EMPTY_LIST;
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
public String toString() {
StringBuffer buf = new StringBuffer("EclipseClassPathManager: ");
buf.append(nameEnv.toString());
return buf.toString();
}
private class ClassFileReaderBackedClassFile extends ClassPathManager.ClassFile {
private ClassFileReader source;
private InputStream is;
public ClassFileReaderBackedClassFile(ClassFileReader cfr) {
source = cfr;
}
/* (non-Javadoc)
* @see org.aspectj.weaver.bcel.ClassPathManager.ClassFile#getInputStream()
*/
public InputStream getInputStream() throws IOException {
is = new ByteArrayInputStream(source.getReferenceBytes());
return is;
}
public void close() {
try {
if (is!=null) is.close();
} catch (IOException e) {
// Should never happen !
e.printStackTrace();
}
}
/* (non-Javadoc)
* @see org.aspectj.weaver.bcel.ClassPathManager.ClassFile#getPath()
*/
public String getPath() {
return new String(source.getFileName());
}
}
}