86 lines
3.2 KiB
Java
86 lines
3.2 KiB
Java
/*
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* Copyright (c) 2024, 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 8324736
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* @summary Verify starting and ending source positions are not backwards
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* @modules jdk.compiler/com.sun.tools.javac.tree
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* @run main ReversedSourcePositions
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*/
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import com.sun.source.tree.CompilationUnitTree;
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import com.sun.source.tree.Tree;
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import com.sun.source.util.JavacTask;
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import com.sun.source.util.TreeScanner;
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import com.sun.tools.javac.tree.JCTree;
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import java.io.IOException;
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import java.net.URI;
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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 ReversedSourcePositions {
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public static void main(String... args) throws Exception {
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// Create test case source
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var source = new SimpleJavaFileObject(URI.create("file://T.java"), JavaFileObject.Kind.SOURCE) {
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@Override
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public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
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return """
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package errorpronecrash;
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;
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public class ReproFile {}
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""";
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}
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};
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// Parse source
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JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
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JavaCompiler.CompilationTask task = compiler.getTask(null, null, null, List.of(), List.of(), List.of(source));
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Iterable<? extends CompilationUnitTree> units = ((JavacTask)task).parse();
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// Look for reversed source positions
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JCTree.JCCompilationUnit unit = (JCTree.JCCompilationUnit)units.iterator().next();
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unit.accept(new TreeScanner<Void, Void>() {
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@Override
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public Void scan(Tree node, Void aVoid) {
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if (node instanceof JCTree tree) {
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int start = tree.getStartPosition();
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int end = tree.getEndPosition(unit.endPositions);
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if (start >= end) {
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throw new AssertionError(
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String.format("[%d, %d] %s %s\n", start, end, tree.getKind(), tree));
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}
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}
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return super.scan(node, aVoid);
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}
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}, null);
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}
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}
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