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BEGIN LICENSE BLOCK ***** Version: CPL 1.0/GPL 2.0/LGPL 2.1 The contents of this file are subject to the Common Public License Version 1.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 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. Copyright (C) 2008 JRuby project Alternatively, the contents of this file may be used under the terms of either of the GNU General Public License Version 2 or later (the "GPL"), or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), in which case the provisions of the GPL or the LGPL are applicable instead of those above. If you wish to allow use of your version of this file only under the terms of either the GPL or the LGPL, and not to allow others to use your version of this file under the terms of the CPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL or the LGPL. If you do not delete the provisions above, a recipient may use your version of this file under the terms of any one of the CPL, the GPL or the LGPL. END LICENSE BLOCK ***
 package org.jruby.ext.ffi;
 import org.jruby.Ruby;
A native function invoker
 @JRubyClass(name = "FFI::" + ., parent = "Object")
 public abstract class AbstractInvoker extends Pointer {
     static final String CLASS_NAME = "AbstractInvoker";
The arity of this function.
     protected final Arity arity;
     public static RubyClass createAbstractInvokerClass(Ruby runtimeRubyModule module) {
         RubyClass result = module.defineClassUnder(,
         return result;
Creates a new AbstractInvoker instance.

     protected AbstractInvoker(Ruby runtimeRubyClass klassint arityDirectMemoryIO io) {
         super(runtimeklassio, 0);
         this. = Arity.fixed(arity);

Attaches this function to a ruby module or class.

module The module or class to attach the function to.
methodName The ruby name to attach the function as.
     public IRubyObject attach(ThreadContext contextIRubyObject objIRubyObject methodName) {
         DynamicMethod m = createDynamicMethod(obj.getSingletonClass());
         obj.getSingletonClass().addMethod(methodName.asJavaString(), m);
         if (obj instanceof RubyModule) {
             ((RubyModuleobj).addMethod(methodName.asJavaString(), m);
         return this;
     protected abstract DynamicMethod createDynamicMethod(RubyModule module);

Returns the org.jruby.runtime.Arity of this function.

The Arity of the native function.
     public final Arity getArity() {
         return ;
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