/*
* Copyright (c) 2006, 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 6471599
* @summary Type of rhs cannot be obtained when assigning to erroneous symbol
* @author Peter von der Ah\u00e9
* @compile Main.java
* @run main Main
*/
import com.sun.source.tree.AssignmentTree;
import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.util.JavacTask;
import com.sun.source.util.TreePath;
import com.sun.source.util.TreePathScanner;
import com.sun.source.util.Trees;
import com.sun.tools.javac.util.List;
import java.io.IOException;
import java.net.URI;
import javax.lang.model.type.TypeKind;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import javax.tools.ToolProvider;
public class Main {
static class MyFileObject extends SimpleJavaFileObject {
public MyFileObject() {
super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
}
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return "public class Test { { x = java.util.Collections.emptySet(); } }";
}
}
static Trees trees;
public static void main(String[] args) throws IOException {
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
JavacTask task = (JavacTask) compiler.getTask(null, null, null, null, null, List.of(new MyFileObject()));
trees = Trees.instance(task);
Iterable<? extends CompilationUnitTree> asts = task.parse();
task.analyze();
for (CompilationUnitTree ast : asts) {
new MyVisitor().scan(ast, null);
}
}
static class MyVisitor extends TreePathScanner<Void,Void> {
@Override
public Void visitAssignment(AssignmentTree node, Void ignored) {
TreePath path = TreePath.getPath(getCurrentPath(), node.getExpression());
if (trees.getTypeMirror(path).getKind() == TypeKind.ERROR)
throw new AssertionError(path.getLeaf());
return null;
}
}
}