/*

 * 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     6413682

 * @summary Compiler confused about implicit type args and arrays

 * @author  Peter von der Ah\u00e9

 */

import com.sun.source.tree.CompilationUnitTree;

import com.sun.source.tree.ErroneousTree;

import com.sun.source.tree.Tree;

import com.sun.source.util.JavacTask;

import com.sun.source.util.TreeScanner;

import com.sun.source.util.Trees;

import java.io.IOException;

import java.net.URI;

import java.util.Collections;

import java.util.List;

import javax.tools.Diagnostic;

import javax.tools.DiagnosticListener;

import javax.tools.JavaCompiler;

import javax.tools.JavaFileObject;

import javax.tools.SimpleJavaFileObject;

import static javax.tools.JavaFileObject.Kind.SOURCE;

import javax.tools.ToolProvider;

public class TestPos {

    static final String errCode = "compiler.err.cannot.create.array.with.type.arguments";

    static final String expected =

        String.format("%s%n%s%n",

                      "compiler.err.cannot.create.array.with.type.arguments @ 33",

                      "begin=28, end=50 : new Object[0],T,e,s,t");

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

        final boolean[] sawError = { false };

        final StringBuilder log = new StringBuilder();

        class MyFileObject extends SimpleJavaFileObject {

            MyFileObject() {

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

            }

            @Override

            public String getCharContent(boolean ignoreEncodingErrors) {

                //      0         1         2         3         4         5

                //      0123456789012345678901234567890123456789012345678901234

                return "class Test { { Object[] o = new <T,e,s,t>Object[0]; } }";

            }

        }

        class Scanner extends TreeScanner<Void,Trees> {

            CompilationUnitTree toplevel = null;

            @Override

            public Void visitCompilationUnit(CompilationUnitTree node, Trees trees) {

                toplevel = node;

                return super.visitCompilationUnit(node, trees);

            }

            @Override

            public Void visitErroneous(ErroneousTree node, Trees trees) {

                sawError[0] = true;

                long startPos = trees.getSourcePositions().getStartPosition(toplevel, node);

                long endPos = trees.getSourcePositions().getEndPosition(toplevel, node);

                log.append(String.format("begin=%s, end=%s : %s%n",

                                         startPos,

                                         endPos,

                                         node.getErrorTrees()));

                if (startPos != 28)

                    error("Start pos for %s is incorrect (%s)!", node, startPos);

                if (endPos != 50)

                    error("End pos for %s is incorrect (%s)!", node, endPos);

                return null;

            }

        }

        JavaCompiler javac = ToolProvider.getSystemJavaCompiler();

        List<JavaFileObject> compilationUnits =

                Collections.<JavaFileObject>singletonList(new MyFileObject());

        DiagnosticListener<JavaFileObject> dl = new DiagnosticListener<JavaFileObject>() {

            public void report(Diagnostic<? extends JavaFileObject> diag) {

                log.append(String.format("%s @ %s%n", diag.getCode(), diag.getPosition()));

                if (!diag.getCode().equals(errCode))

                    error("unexpected error");

                if (diag.getPosition() != 33)

                    error("Error pos for %s is incorrect (%s)!",

                          diag.getCode(), diag.getPosition());

                sawError[0] = true;

            }

        };

        JavacTask task = (JavacTask)javac.getTask(null, null, dl, null, null,

                                                  compilationUnits);

        Trees trees = Trees.instance(task);

        Iterable<? extends Tree> toplevels = task.parse();

        if (!sawError[0])

            error("No parse error detected");

        sawError[0] = false;

        new Scanner().scan(toplevels, trees);

        if (!sawError[0])

            error("No error tree detected");

        if (!log.toString().equals(expected))

            error("Unexpected log message: %n%s%n", log);

        System.out.print(log);

        System.out.flush();

    }

    static void error(String format, Object... args) {

        throw new AssertionError(String.format(format, args));

    }

}