/*

 * 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.

 */

/*

 * @test

 * @bug 7068902

 * @summary verify that string folding can be enabled or disabled

 */

import com.sun.source.tree.CompilationUnitTree;

import com.sun.source.util.JavacTask;

import java.io.File;

import java.io.IOException;

import java.net.URI;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import javax.tools.JavaCompiler;

import javax.tools.JavaFileObject;

import javax.tools.SimpleJavaFileObject;

import javax.tools.ToolProvider;

public class StringFoldingTest {

    final JavaCompiler tool;

    final JavaSource source;

    public StringFoldingTest() {

        tool = ToolProvider.getSystemJavaCompiler();

        source = new JavaSource();

    }

    static class JavaSource extends SimpleJavaFileObject {

        final static String source =

                "class C {String X=\"F\" + \"O\" + \"L\" + \"D\" + \"E\" + \"D\";}";

        JavaSource() {

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

        }

        @Override

        public CharSequence getCharContent(boolean ignoreEncodingErrors) {

            return source;

        }

    }

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

        StringFoldingTest t = new StringFoldingTest();

        t.run(false);

        t.run(true);

    }

    void run(boolean disableStringFolding) throws IOException {

        List<String> argsList = new ArrayList<String>();

        if (disableStringFolding) {

            argsList.add("-XDallowStringFolding=false");

        }

        JavacTask ct = (JavacTask)tool.getTask(null, null, null,

                argsList,

                null,

                Arrays.asList(source));

        Iterable<? extends CompilationUnitTree> trees = ct.parse();

        String text = trees.toString();

        System.out.println(text);

        if (disableStringFolding) {

            if (text.contains("FOLDED")) {

                throw new AssertionError("Expected string folding");

            }

        } else {

            if (!text.contains("FOLDED")) {

                throw new AssertionError("Expected no string folding");

            }

        }

    }

}