1 /*
2 * Copyright (c) 2011, 2015, 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 7031005
27 * @summary javap prints "extends java.lang.Object"
28 * @modules jdk.compiler
29 */
30
31 import java.io.File;
32 import java.io.IOException;
33 import java.io.PrintWriter;
34 import java.io.StringWriter;
35 import java.net.URI;
36 import java.util.Arrays;
37 import javax.tools.JavaCompiler;
38 import javax.tools.JavaCompiler.CompilationTask;
39 import javax.tools.JavaFileObject;
40 import javax.tools.SimpleJavaFileObject;
41 import javax.tools.StandardJavaFileManager;
42 import javax.tools.StandardLocation;
43 import javax.tools.ToolProvider;
44
45 public class TestSuperclass {
46 enum ClassKind {
47 CLASS("class"),
48 INTERFACE("interface");
49 ClassKind(String keyword) {
50 this.keyword = keyword;
51 }
52 final String keyword;
53 }
54
55 enum GenericKind {
56 NO(""),
57 YES("<T>");
58 GenericKind(String typarams) {
59 this.typarams = typarams;
60 }
61 final String typarams;
62 }
63
64 enum SuperKind {
65 NONE(null),
66 SUPER("Super");
67 SuperKind(String name) {
68 this.name = name;
69 }
70 String extend() {
71 return (name == null) ? "" : "extends " + name;
72 }
73 String decl(ClassKind ck) {
74 return (name == null) ? "" : ck.keyword + " " + name + " { }";
75 }
76 final String name;
77 }
78
79 public static void main(String... args) throws Exception {
80 JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
81 try (StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null)) {
82 int errors = 0;
83
84 for (ClassKind ck: ClassKind.values()) {
85 for (GenericKind gk: GenericKind.values()) {
86 for (SuperKind sk: SuperKind.values()) {
87 errors += new TestSuperclass(ck, gk, sk).run(comp, fm);
88 }
89 }
90 }
91
92 if (errors > 0)
93 throw new Exception(errors + " errors found");
94 }
95 }
96
97 final ClassKind ck;
98 final GenericKind gk;
99 final SuperKind sk;
100
101 TestSuperclass(ClassKind ck, GenericKind gk, SuperKind sk) {
102 this.ck = ck;
103 this.gk = gk;
104 this.sk = sk;
105 }
106
107 int run(JavaCompiler comp, StandardJavaFileManager fm) throws IOException {
108 System.err.println("test: ck:" + ck + " gk:" + gk + " sk:" + sk);
109 File testDir = new File(ck + "-" + gk + "-" + sk);
110 testDir.mkdirs();
111 fm.setLocation(StandardLocation.CLASS_OUTPUT, Arrays.asList(testDir));
112
113 JavaSource js = new JavaSource();
114 System.err.println(js.getCharContent(false));
115 CompilationTask t = comp.getTask(null, fm, null, null, null, Arrays.asList(js));
116 if (!t.call())
117 throw new Error("compilation failed");
118
119 File testClass = new File(testDir, "Test.class");
120 String out = javap(testClass);
121
122 // Extract class sig from first line of Java source
123 String expect = js.source.replaceAll("(?s)^(.* Test[^{]+?) *\\{.*", "$1");
124
125 // Extract class sig from line from javap output
126 String found = out.replaceAll("(?s).*\n(.* Test[^{]+?) *\\{.*", "$1");
127
128 checkEqual("class signature", expect, found);
129
130 return errors;
131 }
132
133 String javap(File file) {
134 StringWriter sw = new StringWriter();
135 PrintWriter pw = new PrintWriter(sw);
136 String[] args = { file.getPath() };
137 int rc = com.sun.tools.javap.Main.run(args, pw);
138 pw.close();
139 String out = sw.toString();
140 if (!out.isEmpty())
141 System.err.println(out);
142 if (rc != 0)
143 throw new Error("javap failed: rc=" + rc);
144 return out;
145 }
146
147 void checkEqual(String label, String expect, String found) {
148 if (!expect.equals(found))
149 error("Unexpected " + label + " found: '" + found + "', expected: '" + expect + "'");
150 }
151
152 void error(String msg) {
153 System.err.println("Error: " + msg);
154 errors++;
155 }
156
157 int errors;
158
159 class JavaSource extends SimpleJavaFileObject {
160 static final String template =
161 "#CK Test#GK #EK { }\n"
162 + "#SK\n";
163 final String source;
164
165 public JavaSource() {
166 super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
167 source = template
168 .replace("#CK", ck.keyword)
169 .replace("#GK", gk.typarams)
170 .replace("#EK", sk.extend())
171 .replace("#SK", sk.decl(ck));
172 }
173
174 @Override
175 public CharSequence getCharContent(boolean ignoreEncodingErrors) {
176 return source;
177 }
178 }
179
180 }