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/*
* Copyright (c) 2014, 2015, 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 8031967
* @summary Ensure javac can handle very deeply nested chain of method invocations occurring as
* a parameter to other method invocations.
* @modules jdk.compiler
* @run main T8031967
*/
import java.io.IOException;
import java.net.URI;
import java.util.Arrays;
import java.util.List;
import javax.tools.DiagnosticListener;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import javax.tools.ToolProvider;
import com.sun.source.util.JavacTask;
public class T8031967 {
public static void main(String... args) throws IOException {
new T8031967().run();
}
final int depth = 50;
private void run() throws IOException {
runTestCase(true);
runTestCase(false);
}
private void runTestCase(boolean withErrors) throws IOException {
StringBuilder code = new StringBuilder();
code.append("public class Test {\n" +
" private void test() {\n" +
" GroupLayout l = new GroupLayout();\n" +
" l.setHorizontalGroup(\n");
gen(code, depth);
code.append(" );\n" +
" }\n");
if (!withErrors) {
code.append(" class GroupLayout {\n" +
" ParallelGroup createParallelGroup() {return null;}\n" +
" ParallelGroup createParallelGroup(int i) {return null;}\n" +
" ParallelGroup createParallelGroup(int i, int j) {return null;}\n" +
" void setHorizontalGroup(Group g) { }\n" +
" }\n" +
" \n" +
" class Group {\n" +
" Group addGroup(Group g) { return this; }\n" +
" Group addGroup(int i, Group g) { return this; }\n" +
" Group addGap(int i) { return this; }\n" +
" Group addGap(long l) { return this; }\n" +
" Group addGap(int i, int j) { return this; }\n" +
" Group addComponent(Object c) { return this; }\n" +
" Group addComponent(int i, Object c) { return this; }\n" +
" }\n" +
" class ParallelGroup extends Group {\n" +
" Group addGroup(Group g) { return this; }\n" +
" Group addGroup(int i, Group g) { return this; }\n" +
" Group addGap(int i) { return this; }\n" +
" Group addGap(int i, int j) { return this; }\n" +
" Group addComponent(Object c) { return this; }\n" +
" Group addComponent(int i, Object c) { return this; }\n" +
" }\n");
}
code.append("}\n");
JavaSource source = new JavaSource(code.toString());
List<JavaSource> sourceList = Arrays.asList(source);
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
DiagnosticListener<JavaFileObject> noErrors = (diagnostic) -> {
throw new IllegalStateException("Should not produce errors: " + diagnostic);
};
JavacTask task = (JavacTask) compiler.getTask(null, null, withErrors ? null : noErrors,
null, null, sourceList);
task.analyze();
}
private void gen(StringBuilder code, int depth) {
code.append("l.createParallelGroup()\n");
if (depth > 0) {
code.append(".addGroup(\n");
gen(code, depth - 1);
code.append(")");
}
code.append(".addGap(1)\n" +
".addComponent(new Object())\n" +
".addGap(1)\n" +
".addComponent(new Object())");
}
class JavaSource extends SimpleJavaFileObject {
final String code;
public JavaSource(String code) {
super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
this.code = code;
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return code;
}
}
}
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