/*
* 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");
}
}
}
}