123 lines
4.6 KiB
Java
123 lines
4.6 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 8035271
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* @summary javap incorrect indentation when LineNumberTable and LocalVariableTable written via ClassWriter
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* @run main ClassWriterTableIndentTest
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* @modules jdk.jdeps/com.sun.tools.javap
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*/
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.util.Arrays;
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import java.util.List;
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public class ClassWriterTableIndentTest {
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public static void main(String[] args) {
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new ClassWriterTableIndentTest().run();
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}
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public void run() {
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/*
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* Partial expected output within a larger file. There exists another "Code: " section above, and thus we
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* select the second occurrence in `findNthMatchPrecedingSpaces(output, "Code:", 1);`
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* ...
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* public void emptyLoop();
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* Code:
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* ...
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* LineNumberTable:
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* line 143: 0
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* line 145: 14
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* ...
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*/
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List<String[]> runArgsList = List.of(new String[]{"-c", "-l"}, new String[]{"-v"}, new String[]{"-l"});
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for (String[] runArgs : runArgsList) {
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String output = javap(runArgs);
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int methodIntent = findNthMatchPrecedingSpaces(output, "public void emptyLoop();", 0);
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int codeHeaderIndent = findNthMatchPrecedingSpaces(output, "Code:", 1);
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int detailIndent = findNthMatchPrecedingSpaces(output, "LineNumberTable:", 1);
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if (codeHeaderIndent - methodIntent != 2) {
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indentError(2, codeHeaderIndent - methodIntent, "Code block", "method header", runArgs);
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}
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if (detailIndent - codeHeaderIndent != 2) {
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indentError(2, detailIndent - codeHeaderIndent, "LineNumberTable", "code header", runArgs);
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}
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if (detailIndent - methodIntent != 4) {
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indentError(4, detailIndent - methodIntent, "LineNumberTable", "method header");
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}
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}
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if (errors > 0) {
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throw new Error(errors + " found.");
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}
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}
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private String javap(String... args) {
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StringWriter sw = new StringWriter();
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PrintWriter out = new PrintWriter(sw);
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String[] fullArgs = new String[args.length + 1];
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System.arraycopy(args, 0, fullArgs, 0, args.length);
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fullArgs[args.length] = System.getProperty("test.classes") + "/EmptyLoop8035271.class";
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int rc = com.sun.tools.javap.Main.run(fullArgs, out);
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if (rc != 0)
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throw new Error("javap failed. rc=" + rc);
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out.close();
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System.out.println(sw);
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return sw.toString();
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}
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public static int findNthMatchPrecedingSpaces(String inputString, String searchString, int occurrence) {
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String[] lines = inputString.split(System.lineSeparator());
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int count = 0;
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for (String line : lines) {
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if (line.trim().startsWith(searchString)) {
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if (count == occurrence) {
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return line.indexOf(searchString);
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}
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count++;
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}
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}
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throw new IllegalArgumentException("Could not find " + searchString + " in " + inputString);
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}
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void indentError(int expected, int actual, String toCompare, String referencePoint, String... args) {
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System.err.println(toCompare + " is not indented correctly with respect to " + referencePoint + ". Expected "
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+ expected + " but got " + actual + " for args: " + Arrays.toString(args));
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errors++;
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}
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int errors;
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}
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class EmptyLoop8035271 {
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public void emptyLoop() {
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for (int i = 0; i < 10; i++) {
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}
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}
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} |