jjg@458: /*
jjg@458:  * Copyright 2010 Sun Microsystems, Inc.  All Rights Reserved.
jjg@458:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jjg@458:  *
jjg@458:  * This code is free software; you can redistribute it and/or modify it
jjg@458:  * under the terms of the GNU General Public License version 2 only, as
jjg@458:  * published by the Free Software Foundation.
jjg@458:  *
jjg@458:  * This code is distributed in the hope that it will be useful, but WITHOUT
jjg@458:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jjg@458:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jjg@458:  * version 2 for more details (a copy is included in the LICENSE file that
jjg@458:  * accompanied this code).
jjg@458:  *
jjg@458:  * You should have received a copy of the GNU General Public License version
jjg@458:  * 2 along with this work; if not, write to the Free Software Foundation,
jjg@458:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jjg@458:  *
jjg@458:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
jjg@458:  * CA 95054 USA or visit www.sun.com if you need additional information or
jjg@458:  * have any questions.
jjg@458:  */
jjg@458: 
jjg@458: /*
jjg@458:  * @test
jjg@458:  * @bug 6855236
jjg@458:  * @summary Compiler Tree API TreePath class generates NullPointerException from Iterator
jjg@458:  * @compile T6855236.java
jjg@458:  * @compile -processor T6855236 -proc:only T6855236.java
jjg@458:  */
jjg@458: 
jjg@458: import java.util.*;
jjg@458: 
jjg@458: import javax.annotation.processing.*;
jjg@458: import javax.lang.model.*;
jjg@458: import javax.lang.model.element.*;
jjg@458: 
jjg@458: import com.sun.source.tree.*;
jjg@458: import com.sun.source.util.*;
jjg@458: 
jjg@458: @SupportedAnnotationTypes("*")
jjg@458: public class T6855236 extends AbstractProcessor {
jjg@458: 
jjg@458:     private Trees trees;
jjg@458: 
jjg@458:     @Override
jjg@458:     public void init(ProcessingEnvironment pe) {
jjg@458:         super.init(pe);
jjg@458:         trees = Trees.instance(pe);
jjg@458:     }
jjg@458: 
jjg@458:     @Override
jjg@458:     public boolean process(Set<? extends TypeElement> arg0, RoundEnvironment roundEnvironment) {
jjg@458:         // Scanner class to scan through various component elements
jjg@458:         CodeVisitor visitor = new CodeVisitor();
jjg@458: 
jjg@458:         for (Element e : roundEnvironment.getRootElements()) {
jjg@458:             TreePath tp = trees.getPath(e);
jjg@458:             visitor.scan(tp, trees);
jjg@458:         }
jjg@458: 
jjg@458:         return true;
jjg@458:     }
jjg@458: 
darcy@495:     @Override
darcy@495:     public SourceVersion getSupportedSourceVersion() {
darcy@495:         return SourceVersion.latest();
darcy@495:     }
darcy@495: 
jjg@458:     class CodeVisitor extends TreePathScanner<Object, Trees> {
jjg@458: 
jjg@458:         @Override
jjg@458:         public Object visitMethodInvocation(MethodInvocationTree node, Trees p) {
jjg@458:             System.out.print("current path: ");
jjg@458:             for (Tree t : getCurrentPath()) {
jjg@458:                 System.out.print('/');
jjg@458:                 System.out.print(t);
jjg@458:            }
jjg@458:             System.out.println();
jjg@458:             System.out.println("parent path: " + getCurrentPath().getParentPath());
jjg@458:             System.out.println("method select: " + node.getMethodSelect().toString());
jjg@458:             for (ExpressionTree arg : node.getArguments()) {
jjg@458:                 System.out.println("argument: " + arg.toString());
jjg@458:             }
jjg@458:             return super.visitMethodInvocation(node, p);
jjg@458:         }
jjg@458: 
jjg@458:         @Override
jjg@458:         public Object visitExpressionStatement(ExpressionStatementTree node, Trees p) {
jjg@458:             ExpressionTree t = node.getExpression();
jjg@458:             System.out.println("expression statement: " + t.toString());
jjg@458:             return super.visitExpressionStatement(node, p);
jjg@458:         }
jjg@458: 
jjg@458:     }
jjg@458: 
jjg@458: }
jjg@458: 
jjg@458: