118 lines
4.7 KiB
Java
118 lines
4.7 KiB
Java
/*
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* Copyright (c) 2020, Google LLC. All rights reserved.
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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 8134007 8035787
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* @summary folded string literals should have correct start and end positions
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*/
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import com.sun.source.tree.CompilationUnitTree;
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import com.sun.source.tree.LiteralTree;
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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.SourcePositions;
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import com.sun.source.util.TreeScanner;
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import com.sun.source.util.Trees;
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import java.io.IOException;
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import java.net.URI;
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import java.util.Arrays;
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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 StringFoldingPosTest {
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private final JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
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public static void main(String[] args) throws IOException {
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StringFoldingPosTest t = new StringFoldingPosTest();
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JavaFileObject source =
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t.makeSource(
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"C", "class C {String X=\"F\" + \"O\" + \"L\" + \"D\" + \"E\" + \"D\";}");
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t.run(source, "FOLDED", 18, 51);
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source =
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t.makeSource(
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"C",
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"class C {String X=(\"F\" + \"O\") + (\"L\" + \"D\") + (\"E\" + \"D\");}");
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t.run(source, "FO", 19, 28);
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t.run(source, "LD", 33, 42);
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t.run(source, "ED", 47, 56);
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}
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private static JavaFileObject makeSource(String name, String code) {
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return SimpleJavaFileObject.forSource(
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URI.create(
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"file:/" + name.replace('.', '/') + JavaFileObject.Kind.SOURCE.extension),
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code);
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}
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private void run(
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JavaFileObject source,
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String expectedLiteral,
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long expectedStartPos,
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long expectedEndPos)
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throws IOException {
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JavacTask ct =
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(JavacTask) compiler.getTask(null, null, null, null, null, Arrays.asList(source));
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SourcePositions positions = Trees.instance(ct).getSourcePositions();
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Iterable<? extends CompilationUnitTree> trees = ct.parse();
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boolean[] found = {false};
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for (CompilationUnitTree tree : trees) {
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new TreeScanner<Void, Void>() {
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@Override
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public Void visitLiteral(LiteralTree literal, Void v) {
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if (literal.getKind() == Tree.Kind.STRING_LITERAL
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&& literal.getValue().equals(expectedLiteral)) {
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long startPos = positions.getStartPosition(tree, literal);
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long endPos = positions.getEndPosition(tree, literal);
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if (startPos != expectedStartPos) {
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throw new AssertionError(
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"Expected start position "
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+ expectedStartPos
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+ ", but was "
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+ startPos);
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}
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if (endPos != expectedEndPos) {
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throw new AssertionError(
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"Expected end position "
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+ expectedEndPos
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+ ", but was "
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+ endPos);
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}
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found[0] = true;
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}
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return null;
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}
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}.scan(trees, null);
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}
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if (found[0]) {
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return;
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}
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throw new AssertionError("Expected string literal " + expectedLiteral + " not found");
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}
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}
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