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test/tools/javac/parser/ExtraSemiTest.java@4868a36f6fd8 (annotated)

test/tools/javac/parser/ExtraSemiTest.java

Tue, 28 Dec 2010 15:54:52 -0800

author

ohair

date

Tue, 28 Dec 2010 15:54:52 -0800

changeset 798

4868a36f6fd8

parent 0

959103a6100f

permissions

-rw-r--r--

6962318: Update copyright year
Reviewed-by: xdono

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2010, 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 6921495
aoqi@0	27	* @summary spurious semicolons in class def cause empty NOPOS blocks
aoqi@0	28	*/
aoqi@0	29
aoqi@0	30	import java.io.*;
aoqi@0	31	import java.net.*;
aoqi@0	32	import java.util.*;
aoqi@0	33	import javax.tools.*;
aoqi@0	34	import com.sun.source.util.*;
aoqi@0	35
aoqi@0	36	public class ExtraSemiTest {
aoqi@0	37
aoqi@0	38	static class JavaSource extends SimpleJavaFileObject {
aoqi@0	39
aoqi@0	40	final static String source =
aoqi@0	41	"class C {\n" +
aoqi@0	42	" int x;;\n" +
aoqi@0	43	" class X { int i;; };\n" +
aoqi@0	44	"}";
aoqi@0	45
aoqi@0	46	JavaSource() {
aoqi@0	47	super(URI.create("myfo:/C.java"), JavaFileObject.Kind.SOURCE);
aoqi@0	48	}
aoqi@0	49
aoqi@0	50	@Override
aoqi@0	51	public CharSequence getCharContent(boolean ignoreEncodingErrors) {
aoqi@0	52	return source;
aoqi@0	53	}
aoqi@0	54	}
aoqi@0	55
aoqi@0	56	public static void main(String... args) throws IOException {
aoqi@0	57	new ExtraSemiTest().run();
aoqi@0	58	}
aoqi@0	59
aoqi@0	60	void run() throws IOException {
aoqi@0	61	File destDir = new File("classes"); destDir.mkdir();
aoqi@0	62	final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
aoqi@0	63	JavaSource source = new JavaSource();
aoqi@0	64	JavacTask ct = (JavacTask)tool.getTask(null, null, null,
aoqi@0	65	Arrays.asList("-d", destDir.getPath(), "-XD-printsource"),
aoqi@0	66	null,
aoqi@0	67	Arrays.asList(source));
aoqi@0	68	Boolean ok = ct.call();
aoqi@0	69	if (!ok) throw new AssertionError("compilation failed");
aoqi@0	70
aoqi@0	71	String text = readFile(new File(destDir, "C.java"));
aoqi@0	72	System.out.println(text);
aoqi@0	73
aoqi@0	74	// compress/canonicalize all whitespace
aoqi@0	75	String canon = text.replaceAll("\\s+", " ");
aoqi@0	76	System.out.println("canon: " + canon);
aoqi@0	77
aoqi@0	78	// There are no empty blocks in the original text.
aoqi@0	79	// C will be given a default constructor "C() { super(); }" which
aoqi@0	80	// does not have any empty blocks.
aoqi@0	81	// The bug is that spurious semicolons in the class defn are parsed
aoqi@0	82	// into redundant empty blocks in the tree, so verify there are
aoqi@0	83	// no empty blocks in the -printsource output
aoqi@0	84
aoqi@0	85	if (canon.contains("{ }"))
aoqi@0	86	throw new AssertionError("unexpected empty block found");
aoqi@0	87	}
aoqi@0	88
aoqi@0	89	String readFile(File f) throws IOException {
aoqi@0	90	int len = (int) f.length();
aoqi@0	91	byte[] data = new byte[len];
aoqi@0	92	DataInputStream in = new DataInputStream(new FileInputStream(f));
aoqi@0	93	try {
aoqi@0	94	in.readFully(data);
aoqi@0	95	return new String(data);
aoqi@0	96	} finally {
aoqi@0	97	in.close();
aoqi@0	98	}
aoqi@0	99	}
aoqi@0	100	}