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/*
* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.io.*;
import java.util.*;
import javax.annotation.processing.*;
import javax.lang.model.element.*;
import javax.lang.model.type.*;
import javax.lang.model.util.*;
import javax.tools.*;
public class Generator extends JavacTestingAbstractProcessor {
@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
for (TypeElement te: ElementFilter.typesIn(roundEnv.getRootElements())) {
System.err.println(te);
generateIfMissing(te.getSuperclass());
generateIfMissing(te.getInterfaces());
}
return true;
}
void generateIfMissing(List<? extends TypeMirror> ts) {
for (TypeMirror t: ts)
generateIfMissing(t);
}
void generateIfMissing(TypeMirror t) {
if (t == null)
return;
if (t.getKind() == TypeKind.ERROR) {
Element e = ((ErrorType) t).asElement();
if (e == null)
return;
if (e.asType().getKind() == TypeKind.ERROR)
createFile((TypeElement) e);
}
}
void createFile(TypeElement e) {
try {
JavaFileObject fo = filer.createSourceFile(e.getSimpleName());
Writer out = fo.openWriter();
try {
switch (e.getKind()) {
case CLASS:
out.write("import java.util.*;\n");
out.write("class " + signature(e) + " {\n");
out.write(" public void run() {\n");
out.write(" Class<?> c = getClass();\n");
out.write(" System.out.println(\"class: \" + c);\n");
out.write(" System.out.println(\"superclass: \" + c.getSuperclass());\n");
out.write(" System.out.println(\"generic superclass: \" +c.getGenericSuperclass());\n");
out.write(" System.out.println(\"interfaces: \" + Arrays.asList(c.getInterfaces()));\n");
out.write(" System.out.println(\"generic interfaces: \" + Arrays.asList(c.getGenericInterfaces()));\n");
out.write(" }\n");
out.write("}\n");
break;
case INTERFACE:
out.write("interface " + signature(e) + " {\n");
out.write(" void run();\n");
out.write("}\n");
break;
}
} finally {
out.close();
}
} catch (IOException ex) {
messager.printMessage(Diagnostic.Kind.ERROR, "problem writing file: " + ex);
}
}
String signature(TypeElement e) {
System.err.println("signature: " + e + " " + e.getTypeParameters());
StringBuilder sb = new StringBuilder();
sb.append(e.getSimpleName());
if (!e.getTypeParameters().isEmpty()) {
sb.append("<");
String sep = "";
for (TypeParameterElement t : e.getTypeParameters()) {
sb.append(sep);
sb.append(t);
sep = ",";
}
sb.append(">");
}
return sb.toString();
}
}
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