126 lines
4.8 KiB
Java
126 lines
4.8 KiB
Java
/*
|
|
* Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
package vm.share;
|
|
|
|
import javax.tools.FileObject;
|
|
import javax.tools.ForwardingJavaFileManager;
|
|
import javax.tools.JavaCompiler;
|
|
import javax.tools.JavaFileManager;
|
|
import javax.tools.JavaFileObject;
|
|
import javax.tools.SimpleJavaFileObject;
|
|
import javax.tools.ToolProvider;
|
|
import java.io.ByteArrayOutputStream;
|
|
import java.io.StringWriter;
|
|
import java.io.Writer;
|
|
import java.net.URI;
|
|
import java.util.Collection;
|
|
import java.util.HashMap;
|
|
import java.util.LinkedList;
|
|
import java.util.Map;
|
|
import java.util.Map.Entry;
|
|
|
|
|
|
public class InMemoryJavaCompiler {
|
|
|
|
public static Map<String, byte[]> compile(Map<String, ? extends CharSequence> inputMap) {
|
|
Collection<JavaFileObject> sourceFiles = new LinkedList<JavaFileObject>();
|
|
for (Entry<String, ? extends CharSequence> entry : inputMap.entrySet()) {
|
|
sourceFiles.add(new SourceFile(entry.getKey(), entry.getValue()));
|
|
}
|
|
|
|
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
|
|
FileManager fileManager = new FileManager(compiler.getStandardFileManager(null, null, null));
|
|
|
|
Writer writer = new StringWriter();
|
|
Boolean exitCode = compiler.getTask(writer, fileManager, null, null, null, sourceFiles).call();
|
|
if (!exitCode) {
|
|
System.out.println("*********** javac output begin ***********");
|
|
System.out.println(writer.toString());
|
|
System.out.println("*********** javac output end ***********");
|
|
if (writer.toString().contains("java.lang.OutOfMemoryError")) {
|
|
System.out.println("Got OOME while performing in memory compilation. It happens on weak hosts and there is nothing we can do. ");
|
|
throw new OutOfMemoryError("Got OOME while performing in memory compilation.");
|
|
}
|
|
throw new RuntimeException("Test bug: in memory compilation failed.");
|
|
}
|
|
return fileManager.getByteCode();
|
|
}
|
|
|
|
// Wraper for class file
|
|
static class ClassFile extends SimpleJavaFileObject {
|
|
|
|
private final ByteArrayOutputStream baos = new ByteArrayOutputStream();
|
|
|
|
protected ClassFile(String name) {
|
|
super(URI.create("memo:///" + name.replace('.', '/') + Kind.CLASS.extension), Kind.CLASS);
|
|
}
|
|
|
|
@Override
|
|
public ByteArrayOutputStream openOutputStream() { return this.baos; }
|
|
|
|
byte[] toByteArray() { return baos.toByteArray(); }
|
|
}
|
|
|
|
// File manager which spawns ClassFile instances by demand
|
|
static class FileManager extends ForwardingJavaFileManager<JavaFileManager> {
|
|
|
|
private Map<String, ClassFile> classesMap = new HashMap<String, ClassFile>();
|
|
|
|
protected FileManager(JavaFileManager fileManager) {
|
|
super(fileManager);
|
|
}
|
|
|
|
@Override
|
|
public ClassFile getJavaFileForOutput(Location location, String name, JavaFileObject.Kind kind, FileObject source) {
|
|
ClassFile classFile = new ClassFile(name);
|
|
classesMap.put(name, classFile);
|
|
return classFile;
|
|
}
|
|
|
|
public Map<String, byte[]> getByteCode() {
|
|
Map<String, byte[]> result = new HashMap<String, byte[]>();
|
|
for (Entry<String, ClassFile> entry : classesMap.entrySet()) {
|
|
result.put(entry.getKey(), entry.getValue().toByteArray());
|
|
}
|
|
return result;
|
|
}
|
|
}
|
|
|
|
// Wrapper for source file
|
|
static class SourceFile extends SimpleJavaFileObject {
|
|
|
|
private CharSequence sourceCode;
|
|
|
|
public SourceFile(String name, CharSequence sourceCode) {
|
|
super(URI.create("memo:///" + name.replace('.', '/') + Kind.SOURCE.extension), Kind.SOURCE);
|
|
this.sourceCode = sourceCode;
|
|
}
|
|
|
|
@Override
|
|
public CharSequence getCharContent(boolean ignore) {
|
|
return this.sourceCode;
|
|
}
|
|
}
|
|
|
|
}
|