aoqi@0:  /*
aoqi@0:   * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0:   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:   *
aoqi@0:   * This code is free software; you can redistribute it and/or modify it
aoqi@0:   * under the terms of the GNU General Public License version 2 only, as
aoqi@0:   * published by the Free Software Foundation.
aoqi@0:   *
aoqi@0:   * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:   * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:   * accompanied this code).
aoqi@0:   *
aoqi@0:   * You should have received a copy of the GNU General Public License version
aoqi@0:   * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:   *
aoqi@0:   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:   * or visit www.oracle.com if you need additional information or have any
aoqi@0:   * questions.
aoqi@0:   */
aoqi@0: 
aoqi@0: import java.util.Set;
aoqi@0: import javax.annotation.processing.*;
aoqi@0: import javax.lang.model.element.*;
aoqi@0: import javax.lang.model.util.ElementFilter;
aoqi@0: import javax.lang.model.SourceVersion;
aoqi@0: import static javax.tools.Diagnostic.Kind.*;
aoqi@0: 
aoqi@0: @SupportedAnnotationTypes("*")
aoqi@0: public class MyProcessor extends AbstractProcessor {
aoqi@0:     private Messager messager;
aoqi@0:     public void init(ProcessingEnvironment processingEnv) {
aoqi@0:         this.messager = processingEnv.getMessager();
aoqi@0:     }
aoqi@0: 
aoqi@0:     public boolean process(Set<? extends TypeElement> tes, RoundEnvironment renv) {
aoqi@0:         if (!renv.processingOver()) {
aoqi@0:             for(TypeElement e : ElementFilter.typesIn(renv.getRootElements())) {
aoqi@0:                 for (TypeParameterElement tp : e.getTypeParameters()) {
aoqi@0:                     if (tp.getSimpleName().toString().length() > 1) {
aoqi@0:                         messager.printMessage(WARNING,
aoqi@0:                             "Type param names should be of length 1", tp);
aoqi@0:                     }
aoqi@0:                 }
aoqi@0:             }
aoqi@0:         }
aoqi@0:         return true;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public SourceVersion getSupportedSourceVersion() {
aoqi@0:         return SourceVersion.latest();
aoqi@0:     }
aoqi@0: }