1 /* 2 * Copyright (c) 2010, 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 8004727 8005647 27 * @summary javac should generate method parameters correctly. 28 * @modules jdk.jdeps/com.sun.tools.javap 29 */ 30 31 import java.io.*; 32 import java.util.*; 33 34 public class MethodParameters { 35 36 static final String Foo_name = "Foo"; 37 static final String Foo_contents = 38 ("public class Foo {\n" + 39 " Foo() {}\n" + 40 " Foo(int i) {}\n" + 41 " void foo0() {}\n" + 42 " void foo2(int j, int k) {}\n" + 43 "}").replaceAll(" +", " "); 44 45 static final String Init0_expected = 46 (" Foo();\n" + 47 " descriptor: ()V\n" + 48 " flags: (0x0000)\n" + 49 " Code:\n" + 50 " stack=1, locals=1, args_size=1\n" + 51 " 0: aload_0\n" + 52 " 1: invokespecial #1 // Method java/lang/Object.\"<init>\":()V\n" + 53 " 4: return\n" + 54 " LineNumberTable:\n" + 55 " line 2: 0").replaceAll(" +", " "); 56 57 static final String Init1_expected = 58 (" Foo(int);\n" + 59 " descriptor: (I)V\n" + 60 " flags: (0x0000)\n" + 61 " Code:\n" + 62 " stack=1, locals=2, args_size=2\n" + 63 " 0: aload_0\n" + 64 " 1: invokespecial #1 // Method java/lang/Object.\"<init>\":()V\n" + 65 " 4: return\n" + 66 " LineNumberTable:\n" + 67 " line 3: 0\n" + 68 " MethodParameters:\n" + 69 " Name Flags\n" + 70 " i").replaceAll(" +", " "); 71 72 static final String foo0_expected = 73 (" void foo0();\n" + 74 " descriptor: ()V\n" + 75 " flags: (0x0000)\n" + 76 " Code:\n" + 77 " stack=0, locals=1, args_size=1\n" + 78 " 0: return\n" + 79 " LineNumberTable:\n" + 80 " line 4: 0").replaceAll(" +", " "); 81 82 static final String foo2_expected = 83 (" void foo2(int, int);\n" + 84 " descriptor: (II)V\n" + 85 " flags: (0x0000)\n" + 86 " Code:\n" + 87 " stack=0, locals=3, args_size=3\n" + 88 " 0: return\n" + 89 " LineNumberTable:\n" + 90 " line 5: 0\n" + 91 " MethodParameters:\n" + 92 " Name Flags\n" + 93 " j\n" + 94 " k").replaceAll(" +", " "); 95 96 static final File classesdir = new File("methodparameters"); 97 static final String separator = System.getProperty("line.separator"); 98 main(String... args)99 public static void main(String... args) throws Exception { 100 new MethodParameters().run(); 101 } 102 run()103 void run() throws Exception { 104 classesdir.mkdir(); 105 final File Foo_java = 106 writeFile(classesdir, Foo_name + ".java", Foo_contents); 107 compile("-parameters", "-d", classesdir.getPath(), Foo_java.getPath()); 108 System.out.println("Run javap"); 109 String output = 110 javap("-c", "-verbose", "-classpath", 111 classesdir.getPath(), Foo_name); 112 String normalized = 113 output.replaceAll(separator, "\n").replaceAll(" +", " "); 114 115 if (!normalized.contains(Init0_expected)) 116 error("Bad output for zero-parameter constructor. Expected\n" + 117 Init0_expected + "\n" + "but got\n" + normalized); 118 if (!normalized.contains(Init1_expected)) 119 error("Bad output for one-parameter constructor. Expected\n" + 120 Init1_expected + "\n" + "but got\n" + normalized); 121 if (!normalized.contains(foo0_expected)) 122 error("Bad output for zero-parameter method. Expected\n" + 123 foo0_expected + "\n" + "but got\n" + normalized); 124 if (!normalized.contains(foo2_expected)) 125 error("Bad output for two-parameter method Expected\n" + 126 foo2_expected + "\n" + "but got\n" + normalized); 127 128 if (0 != errors) 129 throw new Exception("MethodParameters test failed with " + 130 errors + " errors"); 131 } 132 javap(String... args)133 String javap(String... args) { 134 StringWriter sw = new StringWriter(); 135 PrintWriter out = new PrintWriter(sw); 136 //sun.tools.javap.Main.entry(args); 137 int rc = com.sun.tools.javap.Main.run(args, out); 138 if (rc != 0) 139 throw new Error("javap failed. rc=" + rc); 140 out.close(); 141 System.out.println(sw); 142 return sw.toString(); 143 } 144 compile(String... args)145 String compile(String... args) throws Exception { 146 System.err.println("compile: " + Arrays.asList(args)); 147 StringWriter sw = new StringWriter(); 148 PrintWriter pw = new PrintWriter(sw); 149 int rc = com.sun.tools.javac.Main.compile(args, pw); 150 pw.close(); 151 String out = sw.toString(); 152 if (out.length() > 0) 153 System.err.println(out); 154 if (rc != 0) 155 error("compilation failed, rc=" + rc); 156 return out; 157 } 158 writeFile(File dir, String path, String body)159 File writeFile(File dir, String path, String body) throws IOException { 160 File f = new File(dir, path); 161 f.getParentFile().mkdirs(); 162 FileWriter out = new FileWriter(f); 163 out.write(body); 164 out.close(); 165 return f; 166 } 167 error(String msg)168 void error(String msg) { 169 System.err.println("Error: " + msg); 170 errors++; 171 } 172 173 int errors; 174 175 } 176