1/* 2 * Copyright (c) 2011, 2016, 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.jdeps/com.sun.tools.javap 29 */ 30 31import java.io.File; 32import java.io.IOException; 33import java.io.PrintWriter; 34import java.io.StringWriter; 35import java.net.URI; 36import java.util.Arrays; 37import javax.tools.JavaCompiler; 38import javax.tools.JavaCompiler.CompilationTask; 39import javax.tools.JavaFileObject; 40import javax.tools.SimpleJavaFileObject; 41import javax.tools.StandardJavaFileManager; 42import javax.tools.StandardLocation; 43import javax.tools.ToolProvider; 44 45public 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} 181