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test/tools/javap/WhitespaceTest.java@0b6cc4ea670f (annotated)

test/tools/javap/WhitespaceTest.java

Wed, 13 Aug 2014 14:50:00 -0700

author

katleman

date

Wed, 13 Aug 2014 14:50:00 -0700

changeset 2549

0b6cc4ea670f

parent 0

959103a6100f

permissions

-rw-r--r--

Added tag jdk8u40-b01 for changeset bf89a471779d

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation.
aoqi@0	8	*
aoqi@0	9	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	12	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	13	* accompanied this code).
aoqi@0	14	*
aoqi@0	15	* You should have received a copy of the GNU General Public License version
aoqi@0	16	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	18	*
aoqi@0	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	20	* or visit www.oracle.com if you need additional information or have any
aoqi@0	21	* questions.
aoqi@0	22	*/
aoqi@0	23
aoqi@0	24	/*
aoqi@0	25	* @test
aoqi@0	26	* @bug 8033581 8033798 8033726
aoqi@0	27	* @summary Check whitespace in generated output
aoqi@0	28	*/
aoqi@0	29
aoqi@0	30	import java.io.*;
aoqi@0	31	import java.util.*;
aoqi@0	32
aoqi@0	33	public class WhitespaceTest {
aoqi@0	34	public static void main(String... args) throws Exception {
aoqi@0	35	new WhitespaceTest().run();
aoqi@0	36	}
aoqi@0	37
aoqi@0	38	void run() throws Exception {
aoqi@0	39	test("-v", "java.lang.String");
aoqi@0	40	test("-XDtab:1", "-v", "java.lang.String");
aoqi@0	41
aoqi@0	42	String testClasses = System.getProperty("test.classes");
aoqi@0	43	for (int i = 10; i < 40; i++)
aoqi@0	44	test("-XDtab:" + i, "-v", "-classpath", testClasses, "WhitespaceTest$HelloWorld");
aoqi@0	45
aoqi@0	46	if (errors > 0)
aoqi@0	47	throw new Exception(errors + " errors found");
aoqi@0	48	}
aoqi@0	49
aoqi@0	50	void test(String... args) throws Exception {
aoqi@0	51	// need to avoid "//" appearing as a constant in the constant pool
aoqi@0	52	String slash = "/";
aoqi@0	53	String doubleSlash = slash + slash;
aoqi@0	54	System.out.println("test: " + Arrays.asList(args));
aoqi@0	55	String out = javap(args);
aoqi@0	56	for (String line: out.split("[\r\n]+")) {
aoqi@0	57	if (line.endsWith(" "))
aoqi@0	58	error("line has trailing whitespace: " + line);
aoqi@0	59	int comment = line.indexOf(doubleSlash);
aoqi@0	60	if (comment > 0 && line.charAt(comment - 1) != ' ')
aoqi@0	61	error("no space before comment: " + line);
aoqi@0	62	if (line.matches(" +}"))
aoqi@0	63	error("bad indentation: " + line);
aoqi@0	64	}
aoqi@0	65	}
aoqi@0	66
aoqi@0	67	String javap(String... args) throws Exception {
aoqi@0	68	StringWriter sw = new StringWriter();
aoqi@0	69	PrintWriter out = new PrintWriter(sw);
aoqi@0	70	int rc = com.sun.tools.javap.Main.run(args, out);
aoqi@0	71	out.close();
aoqi@0	72	System.out.println(sw.toString());
aoqi@0	73	if (rc < 0)
aoqi@0	74	throw new Exception("javap exited, rc=" + rc);
aoqi@0	75	return sw.toString();
aoqi@0	76	}
aoqi@0	77
aoqi@0	78	void error(String msg) {
aoqi@0	79	System.out.println("Error: " + msg);
aoqi@0	80	errors++;
aoqi@0	81	}
aoqi@0	82
aoqi@0	83	int errors;
aoqi@0	84
aoqi@0	85	// small class to test repeatedly with different tab values
aoqi@0	86	static class HelloWorld {
aoqi@0	87	public static void main(String... args) {
aoqi@0	88	System.out.println("Hello World!");
aoqi@0	89	}
aoqi@0	90	}
aoqi@0	91	}