1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************
devdelegate.h
Delegates that are late-bound to MAME devices.
***************************************************************************/
#pragma once
#ifndef __DEVDELEGATE_H__
#define __DEVDELEGATE_H__
#include "delegate.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> device_delegate_helper
// device_delegate_helper does non-template work
class device_delegate_helper
{
protected:
// constructor
device_delegate_helper(const char *devname) : m_device_name(devname) { }
// internal helpers
delegate_late_bind &bound_object(device_t &search_root);
static const char *safe_tag(device_t *object);
// internal state
const char *m_device_name;
};
// ======================> device_delegate
// device_delegate is a delegate that wraps with a device tag and can be easily
// late bound without replicating logic everywhere
template<typename _Signature>
class device_delegate : public delegate<_Signature>, device_delegate_helper
{
typedef device_delegate<_Signature> thistype;
typedef delegate<_Signature> basetype;
public:
// provide the same constructors as the base class
device_delegate() : basetype(), device_delegate_helper(NULL) { }
device_delegate(const basetype &src) : basetype(src), device_delegate_helper(src.m_device_name) { }
device_delegate(const basetype &src, delegate_late_bind &object) : basetype(src, object), device_delegate_helper(src.m_device_name) { }
template<class _FunctionClass> device_delegate(typename basetype::template traits<_FunctionClass>::member_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object), device_delegate_helper(safe_tag(dynamic_cast<device_t *>(object))) { }
#ifdef USE_STATIC_DELEGATE
template<class _FunctionClass> device_delegate(typename basetype::template traits<_FunctionClass>::static_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object), device_delegate_helper(safe_tag(dynamic_cast<device_t *>(object))) { }
template<class _FunctionClass> device_delegate(typename basetype::template traits<_FunctionClass>::static_ref_func_type funcptr, const char *name, _FunctionClass *object) : basetype(funcptr, name, object), device_delegate_helper(safe_tag(dynamic_cast<device_t *>(object))) { }
#endif
device_delegate &operator=(const thistype &src) { *static_cast<basetype *>(this) = src; m_device_name = src.m_device_name; return *this; }
// provide additional constructors that take a device name string
template<class _FunctionClass> device_delegate(typename basetype::template traits<_FunctionClass>::member_func_type funcptr, const char *name, const char *devname) : basetype(funcptr, name, (_FunctionClass *)0), device_delegate_helper(devname) { }
template<class _FunctionClass> device_delegate(typename basetype::template traits<_FunctionClass>::member_func_type funcptr, const char *name, const char *devname, _FunctionClass *object) : basetype(funcptr, name, (_FunctionClass *)0), device_delegate_helper(devname) { }
#ifdef USE_STATIC_DELEGATE
template<class _FunctionClass> device_delegate(typename basetype::template traits<_FunctionClass>::static_func_type funcptr, const char *name, const char *devname, _FunctionClass *object) : basetype(funcptr, name, (_FunctionClass *)0), device_delegate_helper(devname) { }
template<class _FunctionClass> device_delegate(typename basetype::template traits<_FunctionClass>::static_ref_func_type funcptr, const char *name, const char *devname, _FunctionClass *object) : basetype(funcptr, name, (_FunctionClass *)0), device_delegate_helper(devname) { }
device_delegate(typename basetype::template traits<device_t>::static_func_type funcptr, const char *name) : basetype(funcptr, name, (device_t *)0), device_delegate_helper(NULL) { }
device_delegate(typename basetype::template traits<device_t>::static_ref_func_type funcptr, const char *name) : basetype(funcptr, name, (device_t *)0), device_delegate_helper(NULL) { }
#endif
// and constructors that provide a search root
device_delegate(const thistype &src, device_t &search_root) : basetype(src), device_delegate_helper(src.m_device_name) { bind_relative_to(search_root); }
// perform the binding
void bind_relative_to(device_t &search_root) { if (!basetype::isnull()) basetype::late_bind(bound_object(search_root)); }
};
#endif /* __DEVDELEGATE_H__ */
|