128 lines
4.6 KiB
Java
128 lines
4.6 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.io.BufferedWriter;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.Arrays;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import java.util.stream.Stream;
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import static org.testng.Assert.assertTrue;
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/**
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* Utility class for creating test modules.
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*/
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public class ModuleInfoMaker {
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private static String MODULE_INFO_JAVA = "module-info.java";
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private static Pattern MODULE_PATTERN =
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Pattern.compile("module\\s+((?:\\w+\\.)*)");
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private static Pattern PACKAGE_PATTERN =
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Pattern.compile("package\\s+(((?:\\w+\\.)*)(?:\\w+))");
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private static Pattern CLASS_PATTERN =
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Pattern.compile("(?:public\\s+)?(?:class|enum|interface)\\s+(\\w+)");
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private final Path dir;
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public ModuleInfoMaker(Path dir) {
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this.dir = dir;
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}
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/**
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* Create java source files of the given module
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*/
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public void writeJavaFiles(String module, String moduleInfoJava, String... contents)
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throws IOException
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{
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Path msrc = dir.resolve(module);
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new JavaSource(moduleInfoJava).write(msrc);
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for (String c : contents) {
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new JavaSource(c).write(msrc);
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}
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}
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/**
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* Compile the module to the given destination.
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*/
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public void compile(String module, Path dest, String... options)
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throws IOException
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{
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Path msrc = dir.resolve(module);
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Stream<String> args =
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Stream.concat(Arrays.stream(options),
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Stream.of("--module-source-path",
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dir.toString()));
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assertTrue(CompilerUtils.compile(msrc, dest, args.toArray(String[]::new)),
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"Fail to compile " + module);
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}
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static class JavaSource {
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final String source;
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JavaSource(String source) {
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this.source = source;
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}
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/**
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* Writes the source code to a file in a specified directory.
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* @param dir the directory
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* @throws IOException if there is a problem writing the file
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*/
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public void write(Path dir) throws IOException {
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Path file = dir.resolve(getJavaFileNameFromSource(source));
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Files.createDirectories(file.getParent());
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try (BufferedWriter out = Files.newBufferedWriter(file)) {
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out.write(source.replace("\n", System.lineSeparator()));
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}
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}
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/**
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* Extracts the Java file name from the class declaration.
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* This method is intended for simple files and uses regular expressions,
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* so comments matching the pattern can make the method fail.
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*/
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static String getJavaFileNameFromSource(String source) {
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String packageName = null;
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Matcher matcher = MODULE_PATTERN.matcher(source);
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if (matcher.find())
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return MODULE_INFO_JAVA;
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matcher = PACKAGE_PATTERN.matcher(source);
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if (matcher.find())
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packageName = matcher.group(1).replace(".", "/");
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matcher = CLASS_PATTERN.matcher(source);
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if (matcher.find()) {
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String className = matcher.group(1) + ".java";
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return (packageName == null) ? className : packageName + "/" + className;
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} else if (packageName != null) {
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return packageName + "/package-info.java";
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} else {
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throw new Error("Could not extract the java class " +
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"name from the provided source");
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}
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}
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}
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}
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