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https://github.com/holub/mame
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698 lines
30 KiB
C++
698 lines
30 KiB
C++
/***************************************************************************
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delegate.h
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Templates and classes to enable delegates for callbacks.
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****************************************************************************
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Copyright Aaron Giles
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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* Neither the name 'MAME' nor the names of its contributors may be
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used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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****************************************************************************
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There are many implementations of delegate-like functionality for
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C++ code, but none of them is a perfect drop-in fit for use in MAME.
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In order to be useful in MAME, we need the following properties:
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* No significant overhead; we want to use these for memory
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accessors, and memory accessor overhead is already the dominant
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performance aspect for most drivers.
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* Existing static functions need to be bound with an additional
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pointer parameter as the first argument. All existing
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implementations that allow static function binding assume the
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same signature as the member functions.
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* We must be able to bind the function separately from the
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object. This is to allow configurations to bind functions
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before the objects are created.
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Thus, the implementations below are based on existing works but are
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really a new implementation that is specific to MAME.
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--------------------------------------------------------------------
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The "compatible" version of delegates is based on an implementation
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from Sergey Ryazanov, found here:
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http://www.codeproject.com/KB/cpp/ImpossiblyFastCppDelegate.aspx
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These delegates essentially generate a templated static stub function
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for each target function. The static function takes the first
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parameter, uses it as the object pointer, and calls through the
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member function. For static functions, the stub is compatible with
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the signature of a static function, so we just set the stub directly.
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Pros:
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* should work with any modern compiler
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* static bindings are just as fast as direct calls
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Cons:
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* lots of little stub functions generated
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* double-hops on member function calls means more overhead
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* calling through stub functions repackages parameters
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--------------------------------------------------------------------
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The "internal" version of delegates makes use of the internal
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structure of member function pointers in order to convert them at
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binding time into simple static function pointers. This only works
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on platforms where object->func(p1, p2) is equivalent in calling
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convention to func(object, p1, p2).
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Most of the information on how this works comes from Don Clugston
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in this article:
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http://www.codeproject.com/KB/cpp/FastDelegate.aspx
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Pros:
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* as fast as a standard function call in static and member cases
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* no stub functions or double-hops needed
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Cons:
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* requires internal knowledge of the member function pointer
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* only works for GCC (for now; MSVC info is also readily available)
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***************************************************************************/
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#pragma once
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#ifndef __DELEGATE_H__
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#define __DELEGATE_H__
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//**************************************************************************
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// MACROS
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//**************************************************************************
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// types of delegates supported
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#define DELEGATE_TYPE_COMPATIBLE 0
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#define DELEGATE_TYPE_INTERNAL 1
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// select which one we will be using
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#if defined(__GNUC__)
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#define USE_DELEGATE_TYPE DELEGATE_TYPE_INTERNAL
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#else
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#define USE_DELEGATE_TYPE DELEGATE_TYPE_COMPATIBLE
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#endif
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//**************************************************************************
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// HELPER CLASSES
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//**************************************************************************
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// ======================> generic_class
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// define a dummy generic class that is just straight single-inheritance
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#ifdef _MSC_VER
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class __single_inheritance generic_class;
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class delegate_generic_class { };
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#else
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class delegate_generic_class;
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#endif
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// ======================> bindable_object
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// define a bindable_object base class that must be at the root of any object
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// hierarchy which intends to do late binding
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class bindable_object
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{
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public:
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// virtual destructor to ensure this is a polymorphic class
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bindable_object();
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virtual ~bindable_object();
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};
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// define a deferred cast helper function that does a proper dynamic_cast
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// from a bindable_object to the target class, and returns a delegate_generic_class
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template<class _TargetClass>
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static delegate_generic_class *deferred_cast(bindable_object &object)
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{
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return reinterpret_cast<delegate_generic_class *>(dynamic_cast<_TargetClass *>(&object));
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}
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// we store pointers to these deferred casting helpers, so make a friendly type for it
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typedef delegate_generic_class *(*deferred_cast_func)(bindable_object &object);
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// ======================> delegate_traits
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// delegate_traits is a meta-template that is used to provide a static function pointer
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// and member function pointer of the appropriate type and number of parameters; we use
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// partial template specialization to support fewer parameters by defaulting the later
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// parameters to the special type delegate_param_none
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template<typename _ClassType, typename _ReturnType, typename _P1Type, typename _P2Type, typename _P3Type, typename _P4Type>
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struct delegate_traits
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{
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typedef _ReturnType (*static_func_type)(_ClassType *, _P1Type, _P2Type, _P3Type, _P4Type);
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typedef _ReturnType (*static_ref_func_type)(_ClassType &, _P1Type, _P2Type, _P3Type, _P4Type);
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typedef _ReturnType (_ClassType::*member_func_type)(_P1Type, _P2Type, _P3Type, _P4Type);
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};
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// dummy class used to indicate a non-existant parameter
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class delegate_param_none { };
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// specialization for 3 parameters
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template<typename _ClassType, typename _ReturnType, typename _P1Type, typename _P2Type, typename _P3Type>
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struct delegate_traits<_ClassType, _ReturnType, _P1Type, _P2Type, _P3Type, delegate_param_none>
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{
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typedef _ReturnType (*static_func_type)(_ClassType *, _P1Type, _P2Type, _P3Type);
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typedef _ReturnType (*static_ref_func_type)(_ClassType &, _P1Type, _P2Type, _P3Type);
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typedef _ReturnType (_ClassType::*member_func_type)(_P1Type, _P2Type, _P3Type);
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};
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// specialization for 2 parameters
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template<typename _ClassType, typename _ReturnType, typename _P1Type, typename _P2Type>
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struct delegate_traits<_ClassType, _ReturnType, _P1Type, _P2Type, delegate_param_none, delegate_param_none>
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{
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typedef _ReturnType (*static_func_type)(_ClassType *, _P1Type, _P2Type);
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typedef _ReturnType (*static_ref_func_type)(_ClassType &, _P1Type, _P2Type);
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typedef _ReturnType (_ClassType::*member_func_type)(_P1Type, _P2Type);
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};
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// specialization for 1 parameter
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template<typename _ClassType, typename _ReturnType, typename _P1Type>
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struct delegate_traits<_ClassType, _ReturnType, _P1Type, delegate_param_none, delegate_param_none, delegate_param_none>
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{
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typedef _ReturnType (*static_func_type)(_ClassType *, _P1Type);
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typedef _ReturnType (*static_ref_func_type)(_ClassType &, _P1Type);
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typedef _ReturnType (_ClassType::*member_func_type)(_P1Type);
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};
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// specialization for no parameters
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template<typename _ClassType, typename _ReturnType>
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struct delegate_traits<_ClassType, _ReturnType, delegate_param_none, delegate_param_none, delegate_param_none, delegate_param_none>
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{
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typedef _ReturnType (*static_func_type)(_ClassType *);
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typedef _ReturnType (*static_ref_func_type)(_ClassType &);
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typedef _ReturnType (_ClassType::*member_func_type)();
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};
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//**************************************************************************
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// COMPATIBLE DELEGATES
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//**************************************************************************
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#if (USE_DELEGATE_TYPE == DELEGATE_TYPE_COMPATIBLE)
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// ======================> delegate_raw_mfp
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// delegate_raw_mfp is a class that wraps a generic member function pointer
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// in a static buffer, and can effectively recast itself back for later use;
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// it hides some of the gross details involved in copying artibtrary member
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// function pointers around
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struct delegate_raw_mfp
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{
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// for MSVC maximum size is one pointer, plus 3 ints
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static const int MAX_MFP_SIZE = sizeof(void *) + 3 * sizeof(int);
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// default and copy constructors
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delegate_raw_mfp() { memset(&m_rawdata, 0, sizeof(m_rawdata)); }
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delegate_raw_mfp(const delegate_raw_mfp &src) : m_rawdata(src.m_rawdata) { }
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// construct from any member function pointer
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template<typename _FunctionType>
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delegate_raw_mfp(_FunctionType mfp)
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{
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assert(sizeof(mfp) <= sizeof(m_rawdata));
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memset(&m_rawdata, 0, sizeof(m_rawdata));
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*reinterpret_cast<_FunctionType *>(&m_rawdata) = mfp;
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}
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// assignment operator
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delegate_raw_mfp &operator=(const delegate_raw_mfp &src)
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{
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if (this != &src)
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m_rawdata = src.m_rawdata;
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return *this;
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}
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// comparison operator
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bool operator==(const delegate_raw_mfp &rhs) const
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{
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return (memcmp(&m_rawdata, &rhs.m_rawdata, sizeof(m_rawdata)) == 0);
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}
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// convert back to a member function pointer
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template<class _FunctionType>
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_FunctionType &mfp() const { return *reinterpret_cast<_FunctionType *>(&m_rawdata); }
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// raw buffer to hold the copy of the function pointer
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mutable struct { UINT8 bytes[MAX_MFP_SIZE]; } m_rawdata;
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};
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// ======================> delegate
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// general delegate class template supporting up to 4 parameters
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template<typename _ReturnType, typename _P1Type = delegate_param_none, typename _P2Type = delegate_param_none, typename _P3Type = delegate_param_none, typename _P4Type = delegate_param_none>
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class delegate_base
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{
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typedef typename delegate_traits<delegate_generic_class, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::static_func_type generic_static_func;
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public:
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// generic constructor
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delegate_base()
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: m_caster(NULL),
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m_name(NULL),
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m_function(NULL),
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m_object(NULL),
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m_callobject(NULL) { }
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// copy constructor
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delegate_base(const delegate_base &src)
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: m_caster(src.m_caster),
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m_name(src.m_name),
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m_object(src.m_object),
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m_callobject(src.is_mfp() ? reinterpret_cast<delegate_generic_class *>(this) : src.m_object),
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m_function(src.m_function),
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m_rawfunction(src.m_rawfunction) { }
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// copy constructor with re-bind
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template<class _FunctionClass>
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delegate_base(const delegate_base &src, _FunctionClass *object)
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: m_caster(src.m_caster),
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m_name(src.m_name),
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m_object(src.m_object),
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m_callobject(src.is_mfp() ? reinterpret_cast<delegate_generic_class *>(this) : src.m_object),
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m_function(src.m_function),
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m_rawfunction(src.m_rawfunction) { bind(object); }
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// construct from member function with object pointer
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template<class _FunctionClass>
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delegate_base(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::member_func_type funcptr, const char *name, _FunctionClass *object)
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: m_caster(&deferred_cast<_FunctionClass>),
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m_name(name),
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m_function(&delegate_base::method_stub<_FunctionClass>),
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m_object(NULL),
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m_callobject(reinterpret_cast<delegate_generic_class *>(this)),
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m_rawfunction(funcptr) { bind(object); }
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// construct from static function with object pointer
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template<class _FunctionClass>
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delegate_base(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::static_func_type funcptr, const char *name, _FunctionClass *object)
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: m_caster(&deferred_cast<_FunctionClass>),
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m_name(name),
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m_object(NULL),
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m_callobject(NULL),
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m_function(reinterpret_cast<generic_static_func>(funcptr)) { bind(object); }
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// construct from static reference function with object pointer
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template<class _FunctionClass>
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delegate_base(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::static_ref_func_type funcptr, const char *name, _FunctionClass *object)
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: m_caster(&deferred_cast<_FunctionClass>),
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m_name(name),
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m_object(NULL),
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m_callobject(NULL),
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m_function(reinterpret_cast<generic_static_func>(funcptr)) { bind(object); }
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// copy operator
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delegate_base &operator=(const delegate_base &src)
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{
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if (this != &src)
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{
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m_caster = src.m_caster;
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m_name = src.m_name;
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m_object = src.m_object;
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m_callobject = src.is_mfp() ? reinterpret_cast<delegate_generic_class *>(this) : src.m_object;
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m_function = src.m_function;
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m_rawfunction = src.m_rawfunction;
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}
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return *this;
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}
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// comparison operator
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bool operator==(const delegate_base &rhs) const
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{
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return (m_caster == rhs.m_caster && m_object == rhs.m_object &&
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m_function == m_function && m_rawfunction == m_rawfunction);
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}
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// getters
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bool isnull() const { return (m_caster == NULL); }
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bool valid_target(bindable_object &object) const { return ((*m_caster)(object) != NULL); }
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bool has_object() const { return (m_object != NULL); }
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const char *name() const { return m_name; }
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// call the function
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_ReturnType operator()() const { return (*m_function)(m_callobject); }
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_ReturnType operator()(_P1Type p1) const { return (*m_function)(m_callobject, p1); }
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_ReturnType operator()(_P1Type p1, _P2Type p2) const { return (*m_function)(m_callobject, p1, p2); }
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_ReturnType operator()(_P1Type p1, _P2Type p2, _P3Type p3) const { return (*m_function)(m_callobject, p1, p2, p3); }
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_ReturnType operator()(_P1Type p1, _P2Type p2, _P3Type p3, _P4Type p4) const { return (*m_function)(m_callobject, p1, p2, p3, p4); }
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protected:
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// bind the actual object
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void bind(bindable_object *object)
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{
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m_object = (object != NULL) ? (*this->m_caster)(*object) : NULL;
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if (!is_mfp()) m_callobject = m_object;
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}
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// internal helpers
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bool is_mfp() const { return m_callobject == reinterpret_cast<const delegate_generic_class *>(this); }
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// helper stub that calls the member function; we need one for each parameter count
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template<class _FunctionClass>
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static _ReturnType method_stub(delegate_generic_class *object)
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{
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typedef _ReturnType (_FunctionClass::*mfptype)();
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delegate_base *_this = reinterpret_cast<delegate_base *>(object);
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mfptype &mfp = _this->m_rawfunction.mfp<mfptype>();
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return (reinterpret_cast<_FunctionClass *>(_this->m_object)->*mfp)();
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}
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template<class _FunctionClass>
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static _ReturnType method_stub(delegate_generic_class *object, _P1Type p1)
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{
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typedef _ReturnType (_FunctionClass::*mfptype)(_P1Type p1);
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delegate_base *_this = reinterpret_cast<delegate_base *>(object);
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mfptype &mfp = _this->m_rawfunction.mfp<mfptype>();
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return (reinterpret_cast<_FunctionClass *>(_this->m_object)->*mfp)(p1);
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}
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template<class _FunctionClass>
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static _ReturnType method_stub(delegate_generic_class *object, _P1Type p1, _P2Type p2)
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{
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typedef _ReturnType (_FunctionClass::*mfptype)(_P1Type p1, _P2Type p2);
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delegate_base *_this = reinterpret_cast<delegate_base *>(object);
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mfptype &mfp = _this->m_rawfunction.mfp<mfptype>();
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return (reinterpret_cast<_FunctionClass *>(_this->m_object)->*mfp)(p1, p2);
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}
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template<class _FunctionClass>
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static _ReturnType method_stub(delegate_generic_class *object, _P1Type p1, _P2Type p2, _P3Type p3)
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{
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typedef _ReturnType (_FunctionClass::*mfptype)(_P1Type p1, _P2Type p2, _P3Type p3);
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delegate_base *_this = reinterpret_cast<delegate_base *>(object);
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mfptype &mfp = _this->m_rawfunction.mfp<mfptype>();
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return (reinterpret_cast<_FunctionClass *>(_this->m_object)->*mfp)(p1, p2, p3);
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}
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template<class _FunctionClass>
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static _ReturnType method_stub(delegate_generic_class *object, _P1Type p1, _P2Type p2, _P3Type p3, _P4Type p4)
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{
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typedef _ReturnType (_FunctionClass::*mfptype)(_P1Type p1, _P2Type p2, _P3Type p3, _P4Type p4);
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delegate_base *_this = reinterpret_cast<delegate_base *>(object);
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mfptype &mfp = _this->m_rawfunction.mfp<mfptype>();
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return (reinterpret_cast<_FunctionClass *>(_this->m_object)->*mfp)(p1, p2, p3, p4);
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}
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// internal state
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deferred_cast_func m_caster; // pointer to helper function that does the cast
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const char * m_name; // name string
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generic_static_func m_function; // generic static function pointer
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delegate_raw_mfp m_rawfunction; // copy of raw MFP
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delegate_generic_class * m_object; // pointer to the post-cast object
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delegate_generic_class * m_callobject; // pointer to the object used for calling
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};
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#endif
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//**************************************************************************
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// GCC DELEGATES
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//**************************************************************************
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#if (USE_DELEGATE_TYPE == DELEGATE_TYPE_INTERNAL)
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// a generic function pointer type and a generic member function pointer type
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typedef void (*delegate_generic_function)();
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// struct describing the contents of a member function pointer
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struct delegate_internal_mfp
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{
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// default constructor
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delegate_internal_mfp()
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: m_function(0),
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m_this_delta(0) { }
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// copy constructor
|
|
delegate_internal_mfp(const delegate_internal_mfp &src)
|
|
: m_function(src.m_function),
|
|
m_this_delta(src.m_this_delta) { }
|
|
|
|
// construct from any member function pointer
|
|
template<typename _FunctionPtr>
|
|
delegate_internal_mfp(_FunctionPtr funcptr)
|
|
{
|
|
assert(sizeof(funcptr) == sizeof(*this));
|
|
*reinterpret_cast<_FunctionPtr *>(this) = funcptr;
|
|
}
|
|
|
|
// assignment operator
|
|
delegate_internal_mfp &operator=(const delegate_internal_mfp &src)
|
|
{
|
|
if (this != &src)
|
|
{
|
|
m_function = src.m_function;
|
|
m_this_delta = src.m_this_delta;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
// comparison operator
|
|
bool operator==(const delegate_internal_mfp &rhs) const
|
|
{
|
|
return (m_function == rhs.m_function && m_this_delta == rhs.m_this_delta);
|
|
}
|
|
|
|
// extract the generic function and adjust the object pointer
|
|
delegate_generic_function convert_to_generic(delegate_generic_class *&object) const;
|
|
|
|
// actual state
|
|
FPTR m_function; // first item can be one of two things:
|
|
// if even, it's a pointer to the function
|
|
// if odd, it's the byte offset into the vtable
|
|
int m_this_delta; // delta to apply to the 'this' pointer
|
|
};
|
|
|
|
|
|
// ======================> delegate
|
|
|
|
template<typename _ReturnType, typename _P1Type = delegate_param_none, typename _P2Type = delegate_param_none, typename _P3Type = delegate_param_none, typename _P4Type = delegate_param_none>
|
|
class delegate_base
|
|
{
|
|
typedef typename delegate_traits<delegate_generic_class, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::static_func_type generic_static_func;
|
|
|
|
public:
|
|
// generic constructor
|
|
delegate_base()
|
|
: m_caster(NULL),
|
|
m_name(NULL),
|
|
m_object(NULL),
|
|
m_function(NULL) { }
|
|
|
|
// copy constructor
|
|
delegate_base(const delegate_base &src)
|
|
: m_caster(src.m_caster),
|
|
m_name(src.m_name),
|
|
m_object(src.m_object),
|
|
m_function(src.m_function),
|
|
m_rawfunction(src.m_rawfunction) { }
|
|
|
|
// copy constructor with re-bind
|
|
template<class _FunctionClass>
|
|
delegate_base(const delegate_base &src, _FunctionClass *object)
|
|
: m_caster(src.m_caster),
|
|
m_name(src.m_name),
|
|
m_object(src.m_object),
|
|
m_function(src.m_function),
|
|
m_rawfunction(src.m_rawfunction) { bind(object); }
|
|
|
|
// construct from member function with object pointer
|
|
template<class _FunctionClass>
|
|
delegate_base(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::member_func_type funcptr, const char *name, _FunctionClass *object)
|
|
: m_caster(&deferred_cast<_FunctionClass>),
|
|
m_name(name),
|
|
m_object(NULL),
|
|
m_function(NULL),
|
|
m_rawfunction(funcptr) { bind(object); }
|
|
|
|
// construct from static function with object pointer
|
|
template<class _FunctionClass>
|
|
delegate_base(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::static_func_type funcptr, const char *name, _FunctionClass *object)
|
|
: m_caster(&deferred_cast<_FunctionClass>),
|
|
m_name(name),
|
|
m_object(NULL),
|
|
m_function(reinterpret_cast<generic_static_func>(funcptr)) { bind(object); }
|
|
|
|
// construct from static reference function with object pointer
|
|
template<class _FunctionClass>
|
|
delegate_base(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::static_ref_func_type funcptr, const char *name, _FunctionClass *object)
|
|
: m_caster(&deferred_cast<_FunctionClass>),
|
|
m_name(name),
|
|
m_object(NULL),
|
|
m_function(reinterpret_cast<generic_static_func>(funcptr)) { bind(object); }
|
|
|
|
// copy operator
|
|
delegate_base &operator=(const delegate_base &src)
|
|
{
|
|
if (this != &src)
|
|
{
|
|
m_caster = src.m_caster;
|
|
m_name = src.m_name;
|
|
m_object = src.m_object;
|
|
m_function = src.m_function;
|
|
m_rawfunction = src.m_rawfunction;
|
|
}
|
|
return *this;
|
|
}
|
|
|
|
// comparison operator
|
|
bool operator==(const delegate_base &rhs) const
|
|
{
|
|
return (m_caster == rhs.m_caster && m_object == rhs.m_object &&
|
|
m_function == m_function && m_rawfunction == m_rawfunction);
|
|
}
|
|
|
|
// getters
|
|
bool isnull() const { return (m_caster == NULL); }
|
|
bool valid_target(bindable_object &object) const { return ((*m_caster)(object) != NULL); }
|
|
bool has_object() const { return (m_object != NULL); }
|
|
const char *name() const { return m_name; }
|
|
|
|
// call the function
|
|
_ReturnType operator()() const { return (*m_function)(m_object); }
|
|
_ReturnType operator()(_P1Type p1) const { return (*m_function)(m_object, p1); }
|
|
_ReturnType operator()(_P1Type p1, _P2Type p2) const { return (*m_function)(m_object, p1, p2); }
|
|
_ReturnType operator()(_P1Type p1, _P2Type p2, _P3Type p3) const { return (*m_function)(m_object, p1, p2, p3); }
|
|
_ReturnType operator()(_P1Type p1, _P2Type p2, _P3Type p3, _P4Type p4) const { return (*m_function)(m_object, p1, p2, p3, p4); }
|
|
|
|
protected:
|
|
// bind the actual object
|
|
void bind(bindable_object *object)
|
|
{
|
|
m_object = (object != NULL) ? (*this->m_caster)(*object) : NULL;
|
|
if (m_object != NULL && m_rawfunction.m_function != 0)
|
|
m_function = reinterpret_cast<generic_static_func>(m_rawfunction.convert_to_generic(m_object));
|
|
}
|
|
|
|
// internal state
|
|
deferred_cast_func m_caster; // pointer to helper function that does the cast
|
|
const char * m_name; // name string
|
|
delegate_generic_class * m_object; // pointer to the post-cast object
|
|
generic_static_func m_function; // generic static function pointer
|
|
delegate_internal_mfp m_rawfunction; // raw member function definition
|
|
};
|
|
|
|
#endif
|
|
|
|
|
|
//**************************************************************************
|
|
// NATURAL SYNTAX
|
|
//**************************************************************************
|
|
|
|
// declare the base template
|
|
template <typename Signature>
|
|
class delegate;
|
|
|
|
// specialize for 0 parameters; we derive from the base class and provide equivalent
|
|
// pass-through constructors for each type, as well as an assignment operator
|
|
template<typename _ReturnType>
|
|
class delegate<_ReturnType ()> : public delegate_base<_ReturnType>
|
|
{
|
|
typedef delegate_base<_ReturnType> basetype;
|
|
public:
|
|
delegate() : basetype() { }
|
|
delegate(const basetype &src) : basetype(src) { }
|
|
template<class _FunctionClass> delegate(const basetype &src, _FunctionClass *object) : basetype(src, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, delegate_param_none, delegate_param_none, delegate_param_none, delegate_param_none>::member_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, delegate_param_none, delegate_param_none, delegate_param_none, delegate_param_none>::static_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, delegate_param_none, delegate_param_none, delegate_param_none, delegate_param_none>::static_ref_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
delegate &operator=(const basetype &src) { *static_cast<basetype *>(this) = src; return *this; }
|
|
};
|
|
|
|
// specialize for 1 parameter
|
|
template<typename _ReturnType, typename _P1Type>
|
|
class delegate<_ReturnType (_P1Type)> : public delegate_base<_ReturnType, _P1Type>
|
|
{
|
|
typedef delegate_base<_ReturnType, _P1Type> basetype;
|
|
public:
|
|
delegate() : basetype() { }
|
|
delegate(const basetype &src) : basetype(src) { }
|
|
template<class _FunctionClass> delegate(const basetype &src, _FunctionClass *object) : basetype(src, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, delegate_param_none, delegate_param_none, delegate_param_none>::member_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, delegate_param_none, delegate_param_none, delegate_param_none>::static_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, delegate_param_none, delegate_param_none, delegate_param_none>::static_ref_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
delegate &operator=(const basetype &src) { *static_cast<basetype *>(this) = src; return *this; }
|
|
};
|
|
|
|
// specialize for 2 parameters
|
|
template<typename _ReturnType, typename _P1Type, typename _P2Type>
|
|
class delegate<_ReturnType (_P1Type, _P2Type)> : public delegate_base<_ReturnType, _P1Type, _P2Type>
|
|
{
|
|
typedef delegate_base<_ReturnType, _P1Type, _P2Type> basetype;
|
|
public:
|
|
delegate() : basetype() { }
|
|
delegate(const basetype &src) : basetype(src) { }
|
|
template<class _FunctionClass> delegate(const basetype &src, _FunctionClass *object) : basetype(src, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, delegate_param_none, delegate_param_none>::member_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, delegate_param_none, delegate_param_none>::static_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, delegate_param_none, delegate_param_none>::static_ref_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
delegate &operator=(const basetype &src) { *static_cast<basetype *>(this) = src; return *this; }
|
|
};
|
|
|
|
// specialize for 3 parameters
|
|
template<typename _ReturnType, typename _P1Type, typename _P2Type, typename _P3Type>
|
|
class delegate<_ReturnType (_P1Type, _P2Type, _P3Type)> : public delegate_base<_ReturnType, _P1Type, _P2Type, _P3Type>
|
|
{
|
|
typedef delegate_base<_ReturnType, _P1Type, _P2Type, _P3Type> basetype;
|
|
public:
|
|
delegate() : basetype() { }
|
|
delegate(const basetype &src) : basetype(src) { }
|
|
template<class _FunctionClass> delegate(const basetype &src, _FunctionClass *object) : basetype(src, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, delegate_param_none>::member_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, delegate_param_none>::static_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, delegate_param_none>::static_ref_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
delegate &operator=(const basetype &src) { *static_cast<basetype *>(this) = src; return *this; }
|
|
};
|
|
|
|
// specialize for 4 parameters
|
|
template<typename _ReturnType, typename _P1Type, typename _P2Type, typename _P3Type, typename _P4Type>
|
|
class delegate<_ReturnType (_P1Type, _P2Type, _P3Type, _P4Type)> : public delegate_base<_ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>
|
|
{
|
|
typedef delegate_base<_ReturnType, _P1Type, _P2Type, _P3Type, _P4Type> basetype;
|
|
public:
|
|
delegate() : basetype() { }
|
|
delegate(const basetype &src) : basetype(src) { }
|
|
template<class _FunctionClass> delegate(const basetype &src, _FunctionClass *object) : basetype(src, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::member_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::static_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
template<class _FunctionClass> delegate(typename delegate_traits<_FunctionClass, _ReturnType, _P1Type, _P2Type, _P3Type, _P4Type>::static_ref_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object) { }
|
|
delegate &operator=(const basetype &src) { *static_cast<basetype *>(this) = src; return *this; }
|
|
};
|
|
|
|
|
|
#endif /* __DELEGATE_H__ */
|