| /* |
| * 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.codehaus.groovy.reflection; |
| |
| import groovy.lang.GroovyRuntimeException; |
| import groovy.lang.MetaMethod; |
| |
| import java.lang.reflect.Modifier; |
| import java.lang.reflect.Constructor; |
| import java.io.*; |
| import java.util.*; |
| |
| public abstract class GeneratedMetaMethod extends MetaMethod { |
| private final String name; |
| private final CachedClass declaringClass; |
| private final Class returnType; |
| |
| public GeneratedMetaMethod(String name, CachedClass declaringClass, Class returnType, Class[] parameters) { |
| this.name = name; |
| this.declaringClass = declaringClass; |
| this.returnType = returnType; |
| nativeParamTypes = parameters; |
| } |
| |
| public int getModifiers() { |
| return Modifier.PUBLIC; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public Class getReturnType() { |
| return returnType; |
| } |
| |
| public CachedClass getDeclaringClass() { |
| return declaringClass; |
| } |
| |
| public static class Proxy extends GeneratedMetaMethod { |
| private volatile MetaMethod proxy; |
| private final String className; |
| |
| public Proxy(String className, String name, CachedClass declaringClass, Class returnType, Class[] parameters) { |
| super(name, declaringClass, returnType, parameters); |
| this.className = className; |
| } |
| |
| @Override |
| public boolean isValidMethod(Class[] arguments) { |
| return proxy().isValidMethod(arguments); |
| } |
| |
| @Override |
| public Object doMethodInvoke(Object object, Object[] argumentArray) { |
| return proxy().doMethodInvoke(object, argumentArray); |
| } |
| |
| public Object invoke(Object object, Object[] arguments) { |
| return proxy().invoke(object, arguments); |
| } |
| |
| public final MetaMethod proxy() { |
| if (proxy == null) { |
| synchronized(this) { |
| if (proxy == null) createProxy(); |
| } |
| } |
| return proxy; |
| } |
| |
| private void createProxy() { |
| try { |
| Class<?> aClass = getClass().getClassLoader().loadClass(className.replace('/', '.')); |
| Constructor<?> constructor = aClass.getConstructor(String.class, CachedClass.class, Class.class, Class[].class); |
| proxy = (MetaMethod) constructor.newInstance(getName(), getDeclaringClass(), getReturnType(), getNativeParameterTypes()); |
| } catch (Throwable t) { |
| t.printStackTrace(); |
| throw new GroovyRuntimeException("Failed to create DGM method proxy : " + t, t); |
| } |
| } |
| } |
| |
| public static class DgmMethodRecord implements Serializable { |
| public String className; |
| public String methodName; |
| public Class returnType; |
| public Class[] parameters; |
| |
| private static final Class[] PRIMITIVE_CLASSES = { |
| Boolean.TYPE, Character.TYPE, Byte.TYPE, Short.TYPE, |
| Integer.TYPE, Long.TYPE, Double.TYPE, Float.TYPE, Void.TYPE, |
| |
| boolean[].class, char[].class, byte[].class, short[].class, |
| int[].class, long[].class, double[].class, float[].class, |
| |
| Object[].class, String[].class, Class[].class, Byte[].class, CharSequence[].class, |
| }; |
| |
| public static void saveDgmInfo(List<DgmMethodRecord> records, String file) throws IOException { |
| DataOutputStream out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(file))); |
| Map<String, Integer> classes = new LinkedHashMap<String, Integer>(); |
| |
| int nextClassId = 0; |
| for (Class primitive : PRIMITIVE_CLASSES) { |
| classes.put(primitive.getName(), nextClassId++); |
| } |
| |
| for (DgmMethodRecord record : records) { |
| String name = record.returnType.getName(); |
| Integer id = classes.get(name); |
| if (id == null) { |
| id = nextClassId++; |
| classes.put(name, id); |
| } |
| |
| for (int i = 0; i < record.parameters.length; i++) { |
| name = record.parameters[i].getName(); |
| id = classes.get(name); |
| if (id == null) { |
| id = nextClassId++; |
| classes.put(name, id); |
| } |
| } |
| } |
| |
| for (Map.Entry<String, Integer> stringIntegerEntry : classes.entrySet()) { |
| out.writeUTF(stringIntegerEntry.getKey()); |
| out.writeInt(stringIntegerEntry.getValue()); |
| } |
| out.writeUTF(""); |
| |
| out.writeInt(records.size()); |
| for (DgmMethodRecord record : records) { |
| out.writeUTF(record.className); |
| out.writeUTF(record.methodName); |
| out.writeInt(classes.get(record.returnType.getName())); |
| |
| out.writeInt(record.parameters.length); |
| for (int i = 0; i < record.parameters.length; i++) { |
| Integer key = classes.get(record.parameters[i].getName()); |
| out.writeInt(key); |
| } |
| } |
| out.close(); |
| } |
| |
| public static List<DgmMethodRecord> loadDgmInfo() throws IOException { |
| |
| ClassLoader loader = DgmMethodRecord.class.getClassLoader(); |
| DataInputStream in = new DataInputStream(new BufferedInputStream(loader.getResourceAsStream("META-INF/dgminfo"))); |
| |
| Map<Integer, Class> classes = new HashMap<Integer, Class>(); |
| for (int i = 0; i < PRIMITIVE_CLASSES.length; i++) { |
| classes.put(i, PRIMITIVE_CLASSES[i]); |
| } |
| |
| int skip = 0; |
| for (; ; ) { |
| String name = in.readUTF(); |
| if (name.length() == 0) |
| break; |
| |
| int key = in.readInt(); |
| |
| if (skip++ < PRIMITIVE_CLASSES.length) |
| continue; |
| |
| Class cls = null; |
| try { |
| cls = loader.loadClass(name); |
| } catch (ClassNotFoundException e) { |
| // under certain restrictive environments, loading certain classes may be forbidden |
| // and could yield a ClassNotFoundException (Google App Engine) |
| continue; |
| } |
| classes.put(key, cls); |
| } |
| |
| int size = in.readInt(); |
| List<DgmMethodRecord> res = new ArrayList<DgmMethodRecord>(size); |
| for (int i = 0; i != size; ++i) { |
| boolean skipRecord = false; |
| DgmMethodRecord record = new DgmMethodRecord(); |
| record.className = in.readUTF(); |
| record.methodName = in.readUTF(); |
| record.returnType = classes.get(in.readInt()); |
| |
| if (record.returnType == null) { |
| skipRecord = true; |
| } |
| |
| int psize = in.readInt(); |
| record.parameters = new Class[psize]; |
| for (int j = 0; j < record.parameters.length; j++) { |
| record.parameters[j] = classes.get(in.readInt()); |
| |
| if (record.parameters[j] == null) { |
| skipRecord = true; |
| } |
| } |
| if (!skipRecord) { |
| res.add(record); |
| } |
| } |
| |
| in.close(); |
| |
| return res; |
| } |
| } |
| } |