101 lines
3.3 KiB
Java
101 lines
3.3 KiB
Java
/*
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* Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 7068902 8139751
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* @summary verify that string folding can be enabled or disabled
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* @modules jdk.compiler
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*/
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import com.sun.source.tree.CompilationUnitTree;
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import com.sun.source.util.JavacTask;
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import java.io.File;
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import java.io.IOException;
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import java.net.URI;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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import javax.tools.JavaCompiler;
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import javax.tools.JavaFileObject;
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import javax.tools.SimpleJavaFileObject;
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import javax.tools.ToolProvider;
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public class StringFoldingTest {
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final JavaCompiler tool;
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final JavaSource source;
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public StringFoldingTest() {
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tool = ToolProvider.getSystemJavaCompiler();
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source = new JavaSource();
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}
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static class JavaSource extends SimpleJavaFileObject {
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final static String source =
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"class C {String X=\"F\" + \"O\" + \"L\" + \"D\" + \"E\" + \"D\";}";
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JavaSource() {
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super(URI.create("myfo:/C.java"), JavaFileObject.Kind.SOURCE);
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}
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@Override
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public CharSequence getCharContent(boolean ignoreEncodingErrors) {
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return source;
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}
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}
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public static void main(String... args) throws IOException {
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StringFoldingTest t = new StringFoldingTest();
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t.run(false);
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t.run(true);
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}
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void run(boolean disableStringFolding) throws IOException {
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List<String> argsList = new ArrayList<String>();
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if (disableStringFolding) {
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argsList.add("-XDallowStringFolding=false");
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}
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JavacTask ct = (JavacTask)tool.getTask(null, null, null,
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argsList,
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null,
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Arrays.asList(source));
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Iterable<? extends CompilationUnitTree> trees = ct.parse();
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String text = trees.toString();
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System.out.println(text);
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if (disableStringFolding) {
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if (text.contains("FOLDED")) {
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throw new AssertionError("Expected no string folding");
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}
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if (!text.contains("\"F\"")) {
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throw new AssertionError("Expected content not found");
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}
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} else {
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if (!text.contains("FOLDED")) {
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throw new AssertionError("Expected string folding");
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}
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}
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}
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}
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