001    /*
002     * Copyright 2010-2013 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.jet.codegen;
018    
019    import org.jetbrains.annotations.NotNull;
020    
021    import java.net.URL;
022    import java.net.URLClassLoader;
023    
024    public class GeneratedClassLoader extends URLClassLoader {
025        private ClassFileFactory state;
026    
027        public GeneratedClassLoader(@NotNull ClassFileFactory state, ClassLoader parentClassLoader, URL...urls) {
028            super(urls, parentClassLoader);
029            this.state = state;
030        }
031    
032        @NotNull
033        @Override
034        protected Class<?> findClass(@NotNull String name) throws ClassNotFoundException {
035            String file = name.replace('.', '/') + ".class";
036            if (state.files().contains(file)) {
037                byte[] bytes = state.asBytes(file);
038                return defineClass(name, bytes, 0, bytes.length);
039            }
040            return super.findClass(name);
041        }
042    
043        public void dispose() {
044            state = null;
045        }
046    }