text: /*  Sirikata - Mono Embedding
   *  MonoDelegate.hpp
   *
   *  Copyright (c) 2009, Stanford University
   *  All rights reserved.
   *
   *  Redistribution and use in source and binary forms, with or without
   *  modification, are permitted provided that the following conditions are
   *  met:
   *  * Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *  * Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *  * Neither the name of Sirikata nor the names of its contributors may
   *    be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
   * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
   * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
   * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
   * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
   * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  #ifndef _MONO_DELEGATE_HPP_
  #define _MONO_DELEGATE_HPP_
  
  #include "MonoObject.hpp"
  #include "MonoContext.hpp"
  
  namespace Mono {
  
  class Delegate {
  public:
      Delegate();
      explicit Delegate(const Object& delobj);
  
      /** Returns true if this object is a null reference. */
      bool null() const;
  
      /** Invoke the delegate. */
      Object invoke() const;
      Object invoke(const Object& p1) const;
      Object invoke(const Object& p1, const Object& p2) const;
      Object invoke(const Object& p1, const Object& p2, const Object& p3) const;
      Object invoke(const Object& p1, const Object& p2, const Object& p3, const Object& p4) const;
      Object invoke(const Object& p1, const Object& p2, const Object& p3, const Object& p4, const Object& p5) const;
      Object invoke(const std::vector<Object>& args) const;
  
  protected:
      Object mDelegateObj;
  }; //class Delegate
  
  } // namespace Mono
  
  
  
  namespace Sirikata {
  
  /** A Mono Delegate the also captures context information
   *  and restores it upon invokation.
   */
  class ContextualMonoDelegate : public Mono::Delegate {
  public:
      /** Constructs a null ContextualMonoDelegate. */
      ContextualMonoDelegate();
      /** Constructs a ContextualMonoDelegate using the given Mono::Object
       *  as the delegate and the current MonoContext for this thread.
       *  \param delobj
       */
      explicit ContextualMonoDelegate(const Mono::Object& delobj);
      /** Constructs a ContextualMonoDelegate using the given Mono::Object
       *  as the delegate and the given ContextData as the context.
       */
      ContextualMonoDelegate(const Mono::Object& delobj, const MonoContextData& ctx);
  
  
      /** Invoke the delegate with the appropriate context. */
      Mono::Object invoke() const;
      Mono::Object invoke(const Mono::Object& p1) const;
      Mono::Object invoke(const Mono::Object& p1, const Mono::Object& p2) const;
      Mono::Object invoke(const Mono::Object& p1, const Mono::Object& p2, const Mono::Object& p3) const;
      Mono::Object invoke(const Mono::Object& p1, const Mono::Object& p2, const Mono::Object& p3, const Mono::Object& p4) const;
      Mono::Object invoke(const Mono::Object& p1, const Mono::Object& p2, const Mono::Object& p3, const Mono::Object& p4, const Mono::Object& p5) const;
      Mono::Object invoke(const std::vector<Mono::Object>& args) const;
  
  
  protected:
      void pushContext() const;
      void popContext() const;
  
  private:
      MonoContextData mContext;
  }; // class MonoDelegate
  
  } // namespace Sirikata
  
  #endif //_MONO_DELEGATE_HPP_
  