/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.drill.exec.compile;
import java.io.IOException;
import java.io.StringReader;
import org.apache.drill.exec.compile.ClassTransformer.ClassNames;
import org.apache.drill.exec.exception.ClassTransformationException;
import org.codehaus.commons.compiler.CompileException;
import org.codehaus.janino.ClassLoaderIClassLoader;
import org.codehaus.janino.IClassLoader;
import org.codehaus.janino.Java;
import org.codehaus.janino.Parser;
import org.codehaus.janino.Scanner;
import org.codehaus.janino.UnitCompiler;
import org.codehaus.janino.util.ClassFile;
public class JaninoClassCompiler extends AbstractClassCompiler {
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(JaninoClassCompiler.class);
private IClassLoader compilationClassLoader;
public JaninoClassCompiler(ClassLoader parentClassLoader, boolean debug) {
super(debug);
this.compilationClassLoader = new ClassLoaderIClassLoader(parentClassLoader);
}
protected byte[][] getByteCode(final ClassNames className, final String sourcecode)
throws CompileException, IOException, ClassNotFoundException, ClassTransformationException {
StringReader reader = new StringReader(sourcecode);
Scanner scanner = new Scanner((String) null, reader);
Java.CompilationUnit compilationUnit = new Parser(scanner).parseCompilationUnit();
ClassFile[] classFiles = new UnitCompiler(compilationUnit, compilationClassLoader)
.compileUnit(this.debug, this.debug, this.debug);
byte[][] byteCodes = new byte[classFiles.length][];
for(int i = 0; i < classFiles.length; i++){
byteCodes[i] = classFiles[i].toByteArray();
}
return byteCodes;
}
protected org.slf4j.Logger getLogger() { return logger; }
}