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test/tools/javap/MethodParameters.java@31780dd06ec7 (annotated)

test/tools/javap/MethodParameters.java

Sat, 29 Dec 2012 17:33:17 -0800

author

jjg

date

Sat, 29 Dec 2012 17:33:17 -0800

changeset 1473

31780dd06ec7

child 1478

a9cb93cca229

permissions

-rw-r--r--

8004727: Add compiler support for parameter reflection
Reviewed-by: jjg
Contributed-by: eric.mccorkle@oracle.com

jjg@1473	1	/*
jjg@1473	2	* Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved.
jjg@1473	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jjg@1473	4	*
jjg@1473	5	* This code is free software; you can redistribute it and/or modify it
jjg@1473	6	* under the terms of the GNU General Public License version 2 only, as
jjg@1473	7	* published by the Free Software Foundation.
jjg@1473	8	*
jjg@1473	9	* This code is distributed in the hope that it will be useful, but WITHOUT
jjg@1473	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jjg@1473	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
jjg@1473	12	* version 2 for more details (a copy is included in the LICENSE file that
jjg@1473	13	* accompanied this code).
jjg@1473	14	*
jjg@1473	15	* You should have received a copy of the GNU General Public License version
jjg@1473	16	* 2 along with this work; if not, write to the Free Software Foundation,
jjg@1473	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jjg@1473	18	*
jjg@1473	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
jjg@1473	20	* or visit www.oracle.com if you need additional information or have any
jjg@1473	21	* questions.
jjg@1473	22	*/
jjg@1473	23
jjg@1473	24	/*
jjg@1473	25	* @test
jjg@1473	26	* @summary javac should generate method parameters correctly.
jjg@1473	27	*/
jjg@1473	28
jjg@1473	29	import java.io.*;
jjg@1473	30	import java.util.*;
jjg@1473	31
jjg@1473	32	public class MethodParameters {
jjg@1473	33
jjg@1473	34	static final String Foo_name = "Foo";
jjg@1473	35	static final String Foo_contents =
jjg@1473	36	("public class Foo {\n" +
jjg@1473	37	" Foo() {}\n" +
jjg@1473	38	" Foo(int i) {}\n" +
jjg@1473	39	" void foo0() {}\n" +
jjg@1473	40	" void foo2(int j, int k) {}\n" +
jjg@1473	41	"}").replaceAll(" +", " ");
jjg@1473	42	static final String Init0_expected =
jjg@1473	43	(" Foo();\n" +
jjg@1473	44	" flags: \n" +
jjg@1473	45	" Code:\n" +
jjg@1473	46	" stack=1, locals=1, args_size=1\n" +
jjg@1473	47	" 0: aload_0 \n" +
jjg@1473	48	" 1: invokespecial #1 // Method java/lang/Object.\"<init>\":()V\n" +
jjg@1473	49	" 4: return \n" +
jjg@1473	50	" LineNumberTable:\n" +
jjg@1473	51	" line 2: 0").replaceAll(" +", " ");
jjg@1473	52	static final String Init1_expected =
jjg@1473	53	(" Foo(int);\n" +
jjg@1473	54	" flags: \n" +
jjg@1473	55	" Code:\n" +
jjg@1473	56	" stack=1, locals=2, args_size=2\n" +
jjg@1473	57	" 0: aload_0 \n" +
jjg@1473	58	" 1: invokespecial #1 // Method java/lang/Object.\"<init>\":()V\n" +
jjg@1473	59	" 4: return \n" +
jjg@1473	60	" LineNumberTable:\n" +
jjg@1473	61	" line 3: 0\n" +
jjg@1473	62	" MethodParameters:\n" +
jjg@1473	63	" Name Flags\n" +
jjg@1473	64	" i").replaceAll(" +", " ");
jjg@1473	65	static final String foo0_expected =
jjg@1473	66	(" void foo0();\n" +
jjg@1473	67	" flags: \n" +
jjg@1473	68	" Code:\n" +
jjg@1473	69	" stack=0, locals=1, args_size=1\n" +
jjg@1473	70	" 0: return \n" +
jjg@1473	71	" LineNumberTable:\n" +
jjg@1473	72	" line 4: 0").replaceAll(" +", " ");
jjg@1473	73	static final String foo2_expected =
jjg@1473	74	(" void foo2(int, int);\n" +
jjg@1473	75	" flags: \n" +
jjg@1473	76	" Code:\n" +
jjg@1473	77	" stack=0, locals=3, args_size=3\n" +
jjg@1473	78	" 0: return \n" +
jjg@1473	79	" LineNumberTable:\n" +
jjg@1473	80	" line 5: 0\n" +
jjg@1473	81	" MethodParameters:\n" +
jjg@1473	82	" Name Flags\n" +
jjg@1473	83	" j \n" +
jjg@1473	84	" k").replaceAll(" +", " ");
jjg@1473	85
jjg@1473	86	static final File classesdir = new File("methodparameters");
jjg@1473	87	static final String separator = System.getProperty("line.separator");
jjg@1473	88
jjg@1473	89	public static void main(String... args) throws Exception {
jjg@1473	90	new MethodParameters().run();
jjg@1473	91	}
jjg@1473	92
jjg@1473	93	void run() throws Exception {
jjg@1473	94	classesdir.mkdir();
jjg@1473	95	final File Foo_java =
jjg@1473	96	writeFile(classesdir, Foo_name + ".java", Foo_contents);
jjg@1473	97	compile("-parameters", "-d", classesdir.getPath(), Foo_java.getPath());
jjg@1473	98	System.out.println("Run javap");
jjg@1473	99	String output =
jjg@1473	100	javap("-c", "-verbose", "-classpath",
jjg@1473	101	classesdir.getPath(), Foo_name);
jjg@1473	102	String normalized =
jjg@1473	103	output.replaceAll(separator, "\n").replaceAll(" +", " ");
jjg@1473	104
jjg@1473	105	if (!normalized.contains(Init0_expected))
jjg@1473	106	error("Bad output for zero-parameter constructor. Expected\n" +
jjg@1473	107	Init0_expected + "\n" + "but got\n" + normalized);
jjg@1473	108	if (!normalized.contains(Init1_expected))
jjg@1473	109	error("Bad output for one-parameter constructor. Expected\n" +
jjg@1473	110	Init1_expected + "\n" + "but got\n" + normalized);
jjg@1473	111	if (!normalized.contains(foo0_expected))
jjg@1473	112	error("Bad output for zero-parameter method. Expected\n" +
jjg@1473	113	foo0_expected + "\n" + "but got\n" + normalized);
jjg@1473	114	if (!normalized.contains(foo2_expected))
jjg@1473	115	error("Bad output for two-parameter method Expected\n" +
jjg@1473	116	foo2_expected + "\n" + "but got\n" + normalized);
jjg@1473	117
jjg@1473	118	if (0 != errors)
jjg@1473	119	throw new Exception("MethodParameters test failed with " +
jjg@1473	120	errors + " errors");
jjg@1473	121	}
jjg@1473	122
jjg@1473	123	String javap(String... args) {
jjg@1473	124	StringWriter sw = new StringWriter();
jjg@1473	125	PrintWriter out = new PrintWriter(sw);
jjg@1473	126	//sun.tools.javap.Main.entry(args);
jjg@1473	127	int rc = com.sun.tools.javap.Main.run(args, out);
jjg@1473	128	if (rc != 0)
jjg@1473	129	throw new Error("javap failed. rc=" + rc);
jjg@1473	130	out.close();
jjg@1473	131	System.out.println(sw);
jjg@1473	132	return sw.toString();
jjg@1473	133	}
jjg@1473	134
jjg@1473	135	String compile(String... args) throws Exception {
jjg@1473	136	System.err.println("compile: " + Arrays.asList(args));
jjg@1473	137	StringWriter sw = new StringWriter();
jjg@1473	138	PrintWriter pw = new PrintWriter(sw);
jjg@1473	139	int rc = com.sun.tools.javac.Main.compile(args, pw);
jjg@1473	140	pw.close();
jjg@1473	141	String out = sw.toString();
jjg@1473	142	if (out.length() > 0)
jjg@1473	143	System.err.println(out);
jjg@1473	144	if (rc != 0)
jjg@1473	145	error("compilation failed, rc=" + rc);
jjg@1473	146	return out;
jjg@1473	147	}
jjg@1473	148
jjg@1473	149	File writeFile(File dir, String path, String body) throws IOException {
jjg@1473	150	File f = new File(dir, path);
jjg@1473	151	f.getParentFile().mkdirs();
jjg@1473	152	FileWriter out = new FileWriter(f);
jjg@1473	153	out.write(body);
jjg@1473	154	out.close();
jjg@1473	155	return f;
jjg@1473	156	}
jjg@1473	157
jjg@1473	158	void error(String msg) {
jjg@1473	159	System.err.println("Error: " + msg);
jjg@1473	160	errors++;
jjg@1473	161	}
jjg@1473	162
jjg@1473	163	int errors;
jjg@1473	164
jjg@1473	165	}