/*

 * Copyright (c) 2010, 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.

 */

/*

 * @test

 * @bug 6993301

 * @summary catch parameters do not have correct kind (i.e. ElementKind.EXCEPTION_PARAMETER)

 */

import com.sun.source.tree.CompilationUnitTree;

import com.sun.source.tree.IdentifierTree;

import com.sun.source.tree.VariableTree;

import com.sun.source.util.TreePathScanner;

import com.sun.source.util.Trees;

import com.sun.tools.javac.api.JavacTaskImpl;

import java.io.IOException;

import java.net.URI;

import java.util.Arrays;

import javax.lang.model.element.Element;

import javax.lang.model.element.ElementKind;

import javax.tools.JavaCompiler;

import javax.tools.JavaFileObject;

import javax.tools.SimpleJavaFileObject;

import javax.tools.ToolProvider;

/**

 *

 * @author Jan Lahoda

 */

public class T6993301 {

    public static void main(String... args) throws Exception {

        new T6993301().testExceptionParameterCorrectKind();

    }

    static class MyFileObject extends SimpleJavaFileObject {

        private String text;

        public MyFileObject(String text) {

            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);

            this.text = text;

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return text;

        }

    }

    public void testExceptionParameterCorrectKind() throws IOException {

        final String bootPath = System.getProperty("sun.boot.class.path");

        final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();

        assert tool != null;

        String code = "package test; public class Test { { try { } catch (NullPointerException ex) {} } }";

        final JavacTaskImpl ct = (JavacTaskImpl)tool.getTask(null, null, null,

                Arrays.asList("-bootclasspath",  bootPath),

                null, Arrays.asList(new MyFileObject(code)));

        CompilationUnitTree cut = ct.parse().iterator().next();

        ct.analyze();

        new TreePathScanner<Void, Void>() {

            @Override

            public Void visitVariable(VariableTree node, Void p) {

                Element el = Trees.instance(ct).getElement(getCurrentPath());

                assertNotNull(el);

                assertEquals(ElementKind.EXCEPTION_PARAMETER, el.getKind());

                return super.visitVariable(node, p);

            }

        }.scan(cut, null);

    }

    private void assertNotNull(Object o) {

        if (o == null)

            throw new AssertionError();

    }

    private <T> void assertEquals(T expected, T actual) {

        if (expected == null ? actual == null : expected.equals(actual))

            return;

        throw new AssertionError("expected: " + expected + ", actual: " + actual);

    }

}