From d7c5ad7d6263fd1baf9bfdbaa4c50b70ef2fbdb2 Mon Sep 17 00:00:00 2001 From: Alexander Sulfrian Date: Tue, 8 Jun 2010 08:22:05 +0200 Subject: reverted folder structure change for better mergeing with upstream --- .../src/org/mozilla/javascript/MemberBox.java | 362 +++++++++++++++++++++ 1 file changed, 362 insertions(+) create mode 100644 trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/MemberBox.java (limited to 'trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/MemberBox.java') diff --git a/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/MemberBox.java b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/MemberBox.java new file mode 100644 index 0000000..2d3553f --- /dev/null +++ b/trunk/infrastructure/rhino1_7R1/src/org/mozilla/javascript/MemberBox.java @@ -0,0 +1,362 @@ +/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * + * ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (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.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Rhino code, released + * May 6, 1999. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1997-1999 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Igor Bukanov + * Felix Meschberger + * Norris Boyd + * Ulrike Mueller + * + * Alternatively, the contents of this file may be used under the terms of + * the GNU General Public License Version 2 or later (the "GPL"), in which + * case the provisions of the GPL are applicable instead of those above. If + * you wish to allow use of your version of this file only under the terms of + * the GPL and not to allow others to use your version of this file under the + * MPL, indicate your decision by deleting the provisions above and replacing + * them with the notice and other provisions required by the GPL. If you do + * not delete the provisions above, a recipient may use your version of this + * file under either the MPL or the GPL. + * + * ***** END LICENSE BLOCK ***** */ + +package org.mozilla.javascript; + +import java.lang.reflect.*; +import java.io.*; + +/** + * Wrappper class for Method and Constructor instances to cache + * getParameterTypes() results, recover from IllegalAccessException + * in some cases and provide serialization support. + * + * @author Igor Bukanov + */ + +final class MemberBox implements Serializable +{ + static final long serialVersionUID = 6358550398665688245L; + + private transient Member memberObject; + transient Class[] argTypes; + transient Object delegateTo; + transient boolean vararg; + + + MemberBox(Method method) + { + init(method); + } + + MemberBox(Constructor constructor) + { + init(constructor); + } + + private void init(Method method) + { + this.memberObject = method; + this.argTypes = method.getParameterTypes(); + this.vararg = VMBridge.instance.isVarArgs(method); + } + + private void init(Constructor constructor) + { + this.memberObject = constructor; + this.argTypes = constructor.getParameterTypes(); + this.vararg = VMBridge.instance.isVarArgs(constructor); + } + + Method method() + { + return (Method)memberObject; + } + + Constructor ctor() + { + return (Constructor)memberObject; + } + + Member member() + { + return memberObject; + } + + boolean isMethod() + { + return memberObject instanceof Method; + } + + boolean isCtor() + { + return memberObject instanceof Constructor; + } + + boolean isStatic() + { + return Modifier.isStatic(memberObject.getModifiers()); + } + + String getName() + { + return memberObject.getName(); + } + + Class getDeclaringClass() + { + return memberObject.getDeclaringClass(); + } + + String toJavaDeclaration() + { + StringBuffer sb = new StringBuffer(); + if (isMethod()) { + Method method = method(); + sb.append(method.getReturnType()); + sb.append(' '); + sb.append(method.getName()); + } else { + Constructor ctor = ctor(); + String name = ctor.getDeclaringClass().getName(); + int lastDot = name.lastIndexOf('.'); + if (lastDot >= 0) { + name = name.substring(lastDot + 1); + } + sb.append(name); + } + sb.append(JavaMembers.liveConnectSignature(argTypes)); + return sb.toString(); + } + + public String toString() + { + return memberObject.toString(); + } + + Object invoke(Object target, Object[] args) + { + Method method = method(); + try { + try { + return method.invoke(target, args); + } catch (IllegalAccessException ex) { + Method accessible = searchAccessibleMethod(method, argTypes); + if (accessible != null) { + memberObject = accessible; + method = accessible; + } else { + if (!VMBridge.instance.tryToMakeAccessible(method)) { + throw Context.throwAsScriptRuntimeEx(ex); + } + } + // Retry after recovery + return method.invoke(target, args); + } + } catch (Exception ex) { + throw Context.throwAsScriptRuntimeEx(ex); + } + } + + Object newInstance(Object[] args) + { + Constructor ctor = ctor(); + try { + try { + return ctor.newInstance(args); + } catch (IllegalAccessException ex) { + if (!VMBridge.instance.tryToMakeAccessible(ctor)) { + throw Context.throwAsScriptRuntimeEx(ex); + } + } + return ctor.newInstance(args); + } catch (Exception ex) { + throw Context.throwAsScriptRuntimeEx(ex); + } + } + + private static Method searchAccessibleMethod(Method method, Class[] params) + { + int modifiers = method.getModifiers(); + if (Modifier.isPublic(modifiers) && !Modifier.isStatic(modifiers)) { + Class c = method.getDeclaringClass(); + if (!Modifier.isPublic(c.getModifiers())) { + String name = method.getName(); + Class[] intfs = c.getInterfaces(); + for (int i = 0, N = intfs.length; i != N; ++i) { + Class intf = intfs[i]; + if (Modifier.isPublic(intf.getModifiers())) { + try { + return intf.getMethod(name, params); + } catch (NoSuchMethodException ex) { + } catch (SecurityException ex) { } + } + } + for (;;) { + c = c.getSuperclass(); + if (c == null) { break; } + if (Modifier.isPublic(c.getModifiers())) { + try { + Method m = c.getMethod(name, params); + int mModifiers = m.getModifiers(); + if (Modifier.isPublic(mModifiers) + && !Modifier.isStatic(mModifiers)) + { + return m; + } + } catch (NoSuchMethodException ex) { + } catch (SecurityException ex) { } + } + } + } + } + return null; + } + + private void readObject(ObjectInputStream in) + throws IOException, ClassNotFoundException + { + in.defaultReadObject(); + Member member = readMember(in); + if (member instanceof Method) { + init((Method)member); + } else { + init((Constructor)member); + } + } + + private void writeObject(ObjectOutputStream out) + throws IOException + { + out.defaultWriteObject(); + writeMember(out, memberObject); + } + + /** + * Writes a Constructor or Method object. + * + * Methods and Constructors are not serializable, so we must serialize + * information about the class, the name, and the parameters and + * recreate upon deserialization. + */ + private static void writeMember(ObjectOutputStream out, Member member) + throws IOException + { + if (member == null) { + out.writeBoolean(false); + return; + } + out.writeBoolean(true); + if (!(member instanceof Method || member instanceof Constructor)) + throw new IllegalArgumentException("not Method or Constructor"); + out.writeBoolean(member instanceof Method); + out.writeObject(member.getName()); + out.writeObject(member.getDeclaringClass()); + if (member instanceof Method) { + writeParameters(out, ((Method) member).getParameterTypes()); + } else { + writeParameters(out, ((Constructor) member).getParameterTypes()); + } + } + + /** + * Reads a Method or a Constructor from the stream. + */ + private static Member readMember(ObjectInputStream in) + throws IOException, ClassNotFoundException + { + if (!in.readBoolean()) + return null; + boolean isMethod = in.readBoolean(); + String name = (String) in.readObject(); + Class declaring = (Class) in.readObject(); + Class[] parms = readParameters(in); + try { + if (isMethod) { + return declaring.getMethod(name, parms); + } else { + return declaring.getConstructor(parms); + } + } catch (NoSuchMethodException e) { + throw new IOException("Cannot find member: " + e); + } + } + + private static final Class[] primitives = { + Boolean.TYPE, + Byte.TYPE, + Character.TYPE, + Double.TYPE, + Float.TYPE, + Integer.TYPE, + Long.TYPE, + Short.TYPE, + Void.TYPE + }; + + /** + * Writes an array of parameter types to the stream. + * + * Requires special handling because primitive types cannot be + * found upon deserialization by the default Java implementation. + */ + private static void writeParameters(ObjectOutputStream out, Class[] parms) + throws IOException + { + out.writeShort(parms.length); + outer: + for (int i=0; i < parms.length; i++) { + Class parm = parms[i]; + boolean primitive = parm.isPrimitive(); + out.writeBoolean(primitive); + if (!primitive) { + out.writeObject(parm); + continue; + } + for (int j=0; j < primitives.length; j++) { + if (parm.equals(primitives[j])) { + out.writeByte(j); + continue outer; + } + } + throw new IllegalArgumentException("Primitive " + parm + + " not found"); + } + } + + /** + * Reads an array of parameter types from the stream. + */ + private static Class[] readParameters(ObjectInputStream in) + throws IOException, ClassNotFoundException + { + Class[] result = new Class[in.readShort()]; + for (int i=0; i < result.length; i++) { + if (!in.readBoolean()) { + result[i] = (Class) in.readObject(); + continue; + } + result[i] = primitives[in.readByte()]; + } + return result; + } +} + -- cgit v1.2.3-1-g7c22