1 #!/usr/bin/env java --enable-preview --source 24 2 /* 3 * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. Oracle designates this 9 * particular file as subject to the "Classpath" exception as provided 10 * by Oracle in the LICENSE file that accompanied this code. 11 * 12 * This code is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 * version 2 for more details (a copy is included in the LICENSE file that 16 * accompanied this code). 17 * 18 * You should have received a copy of the GNU General Public License version 19 * 2 along with this work; if not, write to the Free Software Foundation, 20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 21 * 22 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 23 * or visit www.oracle.com if you need additional information or have any 24 * questions. 25 */ 26 27 import module java.compiler; 28 import com.sun.source.util.JavacTask; 29 import javax.tools.ToolProvider; 30 31 void main(String[] args) throws IOException, InterruptedException { 32 var toolsDir = Path.of(System.getProperty("user.dir")).resolve("bldr"); 33 var classesDir = toolsDir.resolve("classes"); 34 35 // Here we remove all classes from bldr/classes i.e rm -rf bldr/classes 36 if (Files.exists(classesDir)) { 37 Files.walk(classesDir).sorted(Comparator.reverseOrder()).map(Path::toFile).forEach(File::delete); 38 } 39 // Now make sure the bldr/classes dir exists i.e mkdir -p bldr/classes 40 Files.createDirectories(classesDir); 41 42 JavaCompiler javac = ToolProvider.getSystemJavaCompiler(); 43 44 JavacTask javacTask = (JavacTask)javac.getTask( 45 null, null, null, 46 List.of( "--source","24", "--enable-preview", "-d", classesDir.toString()), 47 null, 48 List.of( 49 new SimpleJavaFileObject(toolsDir.resolve("src/main/java/bldr/Bldr.java").toUri(),JavaFileObject.Kind.SOURCE){ 50 public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException { 51 return Files.readString(Path.of(toUri())); 52 } 53 } 54 ) 55 ); 56 javacTask.generate(); 57 } 58