diff options
Diffstat (limited to 'infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterfaceAdapter.java')
| -rw-r--r-- | infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterfaceAdapter.java | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterfaceAdapter.java b/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterfaceAdapter.java deleted file mode 100644 index 877e6a2..0000000 --- a/infrastructure/rhino1_7R1/src/org/mozilla/javascript/InterfaceAdapter.java +++ /dev/null @@ -1,156 +0,0 @@ -/* -*- 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 - * - * 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.Method; - -/** - * Adapter to use JS function as implementation of Java interfaces with - * single method or multiple methods with the same signature. - */ -public class InterfaceAdapter -{ - private final Object proxyHelper; - - /** - * Make glue object implementing interface cl that will - * call the supplied JS function when called. - * Only interfaces were all methods have the same signature is supported. - * - * @return The glue object or null if <tt>cl</tt> is not interface or - * has methods with different signatures. - */ - static Object create(Context cx, Class cl, Callable function) - { - if (!cl.isInterface()) throw new IllegalArgumentException(); - - Scriptable topScope = ScriptRuntime.getTopCallScope(cx); - ClassCache cache = ClassCache.get(topScope); - InterfaceAdapter adapter; - adapter = (InterfaceAdapter)cache.getInterfaceAdapter(cl); - ContextFactory cf = cx.getFactory(); - if (adapter == null) { - Method[] methods = cl.getMethods(); - if (methods.length == 0) { - throw Context.reportRuntimeError2( - "msg.no.empty.interface.conversion", - String.valueOf(function), - cl.getClass().getName()); - } - boolean canCallFunction = false; - canCallFunctionChecks: { - Class[] argTypes = methods[0].getParameterTypes(); - // check that the rest of methods has the same signature - for (int i = 1; i != methods.length; ++i) { - Class[] types2 = methods[i].getParameterTypes(); - if (types2.length != argTypes.length) { - break canCallFunctionChecks; - } - for (int j = 0; j != argTypes.length; ++j) { - if (types2[j] != argTypes[j]) { - break canCallFunctionChecks; - } - } - } - canCallFunction= true; - } - if (!canCallFunction) { - throw Context.reportRuntimeError2( - "msg.no.function.interface.conversion", - String.valueOf(function), - cl.getClass().getName()); - } - adapter = new InterfaceAdapter(cf, cl); - cache.cacheInterfaceAdapter(cl, adapter); - } - return VMBridge.instance.newInterfaceProxy( - adapter.proxyHelper, cf, adapter, function, topScope); - } - - private InterfaceAdapter(ContextFactory cf, Class cl) - { - this.proxyHelper - = VMBridge.instance.getInterfaceProxyHelper( - cf, new Class[] { cl }); - } - - public Object invoke(ContextFactory cf, - final Object target, - final Scriptable topScope, - final Method method, - final Object[] args) - { - ContextAction action = new ContextAction() { - public Object run(Context cx) - { - return invokeImpl(cx, target, topScope, method, args); - } - }; - return cf.call(action); - } - - Object invokeImpl(Context cx, - Object target, - Scriptable topScope, - Method method, - Object[] args) - { - int N = (args == null) ? 0 : args.length; - - Callable function = (Callable)target; - Scriptable thisObj = topScope; - Object[] jsargs = new Object[N + 1]; - jsargs[N] = method.getName(); - if (N != 0) { - WrapFactory wf = cx.getWrapFactory(); - for (int i = 0; i != N; ++i) { - jsargs[i] = wf.wrap(cx, topScope, args[i], null); - } - } - - Object result = function.call(cx, topScope, thisObj, jsargs); - Class javaResultType = method.getReturnType(); - if (javaResultType == Void.TYPE) { - result = null; - } else { - result = Context.jsToJava(result, javaResultType); - } - return result; - } -} |