1 /* 2 * Copyright (c) 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 package jdk.test.lib.compiler; 25 26 import java.io.BufferedWriter; 27 import java.io.IOException; 28 import java.nio.file.Files; 29 import java.nio.file.Path; 30 import java.util.Arrays; 31 import java.util.regex.Matcher; 32 import java.util.regex.Pattern; 33 import java.util.stream.Stream; 34 35 /** 36 * Utility class for creating test modules. 37 */ 38 public class ModuleInfoMaker { 39 private static final String MODULE_INFO_JAVA = "module-info.java"; 40 private static final Pattern MODULE_PATTERN = 41 Pattern.compile("module\\s+((?:\\w+\\.)*)"); 42 private static final Pattern PACKAGE_PATTERN = 43 Pattern.compile("package\\s+(((?:\\w+\\.)*)(?:\\w+))"); 44 private static final Pattern CLASS_PATTERN = 45 Pattern.compile("(?:public\\s+)?(?:class|enum|interface)\\s+(\\w+)"); 46 47 private final Path dir; 48 49 public ModuleInfoMaker(Path dir) { 50 this.dir = dir; 51 } 52 53 /** 54 * Create java source files of the given module 55 */ 56 public void writeJavaFiles(String module, String moduleInfoJava, String... contents) 57 throws IOException 58 { 59 Path msrc = dir.resolve(module); 60 new JavaSource(moduleInfoJava).write(msrc); 61 for (String c : contents) { 62 new JavaSource(c).write(msrc); 63 } 64 } 65 66 /** 67 * Compile the module to the given destination. 68 */ 69 public void compile(String module, Path dest, String... options) 70 throws IOException 71 { 72 Path msrc = dir.resolve(module); 73 String[] args = 74 Stream.concat(Arrays.stream(options), 75 Stream.of("--module-source-path", 76 dir.toString())).toArray(String[]::new); 77 if (!CompilerUtils.compile(msrc, dest, args)) { 78 throw new Error("Fail to compile " + module); 79 } 80 } 81 82 static class JavaSource { 83 final String source; 84 JavaSource(String source) { 85 this.source = source; 86 } 87 88 /** 89 * Writes the source code to a file in a specified directory. 90 * @param dir the directory 91 * @throws IOException if there is a problem writing the file 92 */ 93 public void write(Path dir) throws IOException { 94 Path file = dir.resolve(getJavaFileNameFromSource(source)); 95 Files.createDirectories(file.getParent()); 96 try (BufferedWriter out = Files.newBufferedWriter(file)) { 97 out.write(source.replace("\n", System.lineSeparator())); 98 } 99 } 100 101 /** 102 * Extracts the Java file name from the class declaration. 103 * This method is intended for simple files and uses regular expressions, 104 * so comments matching the pattern can make the method fail. 105 */ 106 static String getJavaFileNameFromSource(String source) { 107 String packageName = null; 108 109 Matcher matcher = MODULE_PATTERN.matcher(source); 110 if (matcher.find()) 111 return MODULE_INFO_JAVA; 112 113 matcher = PACKAGE_PATTERN.matcher(source); 114 if (matcher.find()) 115 packageName = matcher.group(1).replace(".", "/"); 116 117 matcher = CLASS_PATTERN.matcher(source); 118 if (matcher.find()) { 119 String className = matcher.group(1) + ".java"; 120 return (packageName == null) ? className : packageName + "/" + className; 121 } else if (packageName != null) { 122 return packageName + "/package-info.java"; 123 } else { 124 throw new Error("Could not extract the java class " + 125 "name from the provided source"); 126 } 127 } 128 } 129 }