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comparison: test/tools/javap/MethodParameters.java

test/tools/javap/MethodParameters.java

changeset 0
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1 /*
2 * Copyright (c) 2010, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 8004727 8005647
27 * @summary javac should generate method parameters correctly.
28 */
29
30 import java.io.*;
31 import java.util.*;
32
33 public class MethodParameters {
34
35 static final String Foo_name = "Foo";
36 static final String Foo_contents =
37 ("public class Foo {\n" +
38 " Foo() {}\n" +
39 " Foo(int i) {}\n" +
40 " void foo0() {}\n" +
41 " void foo2(int j, int k) {}\n" +
42 "}").replaceAll(" +", " ");
43
44 static final String Init0_expected =
45 (" Foo();\n" +
46 " descriptor: ()V\n" +
47 " flags:\n" +
48 " Code:\n" +
49 " stack=1, locals=1, args_size=1\n" +
50 " 0: aload_0\n" +
51 " 1: invokespecial #1 // Method java/lang/Object.\"<init>\":()V\n" +
52 " 4: return\n" +
53 " LineNumberTable:\n" +
54 " line 2: 0").replaceAll(" +", " ");
55
56 static final String Init1_expected =
57 (" Foo(int);\n" +
58 " descriptor: (I)V\n" +
59 " flags:\n" +
60 " Code:\n" +
61 " stack=1, locals=2, args_size=2\n" +
62 " 0: aload_0\n" +
63 " 1: invokespecial #1 // Method java/lang/Object.\"<init>\":()V\n" +
64 " 4: return\n" +
65 " LineNumberTable:\n" +
66 " line 3: 0\n" +
67 " MethodParameters:\n" +
68 " Name Flags\n" +
69 " i").replaceAll(" +", " ");
70
71 static final String foo0_expected =
72 (" void foo0();\n" +
73 " descriptor: ()V\n" +
74 " flags:\n" +
75 " Code:\n" +
76 " stack=0, locals=1, args_size=1\n" +
77 " 0: return\n" +
78 " LineNumberTable:\n" +
79 " line 4: 0").replaceAll(" +", " ");
80
81 static final String foo2_expected =
82 (" void foo2(int, int);\n" +
83 " descriptor: (II)V\n" +
84 " flags:\n" +
85 " Code:\n" +
86 " stack=0, locals=3, args_size=3\n" +
87 " 0: return\n" +
88 " LineNumberTable:\n" +
89 " line 5: 0\n" +
90 " MethodParameters:\n" +
91 " Name Flags\n" +
92 " j\n" +
93 " k").replaceAll(" +", " ");
94
95 static final File classesdir = new File("methodparameters");
96 static final String separator = System.getProperty("line.separator");
97
98 public static void main(String... args) throws Exception {
99 new MethodParameters().run();
100 }
101
102 void run() throws Exception {
103 classesdir.mkdir();
104 final File Foo_java =
105 writeFile(classesdir, Foo_name + ".java", Foo_contents);
106 compile("-parameters", "-d", classesdir.getPath(), Foo_java.getPath());
107 System.out.println("Run javap");
108 String output =
109 javap("-c", "-verbose", "-classpath",
110 classesdir.getPath(), Foo_name);
111 String normalized =
112 output.replaceAll(separator, "\n").replaceAll(" +", " ");
113
114 if (!normalized.contains(Init0_expected))
115 error("Bad output for zero-parameter constructor. Expected\n" +
116 Init0_expected + "\n" + "but got\n" + normalized);
117 if (!normalized.contains(Init1_expected))
118 error("Bad output for one-parameter constructor. Expected\n" +
119 Init1_expected + "\n" + "but got\n" + normalized);
120 if (!normalized.contains(foo0_expected))
121 error("Bad output for zero-parameter method. Expected\n" +
122 foo0_expected + "\n" + "but got\n" + normalized);
123 if (!normalized.contains(foo2_expected))
124 error("Bad output for two-parameter method Expected\n" +
125 foo2_expected + "\n" + "but got\n" + normalized);
126
127 if (0 != errors)
128 throw new Exception("MethodParameters test failed with " +
129 errors + " errors");
130 }
131
132 String javap(String... args) {
133 StringWriter sw = new StringWriter();
134 PrintWriter out = new PrintWriter(sw);
135 //sun.tools.javap.Main.entry(args);
136 int rc = com.sun.tools.javap.Main.run(args, out);
137 if (rc != 0)
138 throw new Error("javap failed. rc=" + rc);
139 out.close();
140 System.out.println(sw);
141 return sw.toString();
142 }
143
144 String compile(String... args) throws Exception {
145 System.err.println("compile: " + Arrays.asList(args));
146 StringWriter sw = new StringWriter();
147 PrintWriter pw = new PrintWriter(sw);
148 int rc = com.sun.tools.javac.Main.compile(args, pw);
149 pw.close();
150 String out = sw.toString();
151 if (out.length() > 0)
152 System.err.println(out);
153 if (rc != 0)
154 error("compilation failed, rc=" + rc);
155 return out;
156 }
157
158 File writeFile(File dir, String path, String body) throws IOException {
159 File f = new File(dir, path);
160 f.getParentFile().mkdirs();
161 FileWriter out = new FileWriter(f);
162 out.write(body);
163 out.close();
164 return f;
165 }
166
167 void error(String msg) {
168 System.err.println("Error: " + msg);
169 errors++;
170 }
171
172 int errors;
173
174 }

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