| /* |
| * 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 java.util.Arrays; |
| import java.util.Map; |
| import java.util.stream.Collectors; |
| |
| import org.apache.drill.exec.compile.ClassTransformer.ClassNames; |
| 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; |
| |
| class JaninoClassCompiler extends AbstractClassCompiler { |
| static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(JaninoClassCompiler.class); |
| |
| private final IClassLoader compilationClassLoader; |
| |
| public JaninoClassCompiler(ClassLoader parentClassLoader, boolean debug) { |
| super(debug); |
| this.compilationClassLoader = new ClassLoaderIClassLoader(parentClassLoader); |
| } |
| |
| @Override |
| protected byte[][] getByteCode(final ClassNames className, final String sourceCode) |
| throws CompileException, IOException { |
| ClassFile[] classFiles = doCompile(sourceCode); |
| |
| byte[][] byteCodes = new byte[classFiles.length][]; |
| for(int i = 0; i < classFiles.length; i++){ |
| byteCodes[i] = classFiles[i].toByteArray(); |
| } |
| return byteCodes; |
| } |
| |
| @Override |
| public Map<String,byte[]> compile(final ClassNames className, final String sourceCode) |
| throws CompileException, IOException, ClassNotFoundException { |
| |
| ClassFile[] classFiles = doCompile(sourceCode); |
| return Arrays.stream(classFiles) |
| .collect(Collectors.toMap(ClassFile::getThisClassName, ClassFile::toByteArray, (a, b) -> b)); |
| } |
| |
| private ClassFile[] doCompile(final String sourceCode) |
| throws CompileException, IOException { |
| StringReader reader = new StringReader(sourceCode); |
| Scanner scanner = new Scanner(null, reader); |
| Java.AbstractCompilationUnit compilationUnit = new Parser(scanner).parseAbstractCompilationUnit(); |
| return new UnitCompiler(compilationUnit, compilationClassLoader) |
| .compileUnit(this.debug, this.debug, this.debug); |
| } |
| |
| @Override |
| protected org.slf4j.Logger getLogger() { return logger; } |
| } |