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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/*
flext - C++ layer for Max/MSP and pd (pure data) externals
Copyright (c) 2001-2003 Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
/*! \file flbind.cpp
\brief Functionality for symbol-bound methods.
*/
#include "flext.h"
#include "flinternal.h"
t_class *flext_base::pxbnd_class = NULL;
#if FLEXT_SYS == FLEXT_SYS_MAX
t_object *px_freelist = NULL;
t_messlist px_messlist[3];
#endif
/*! \brief Set up the proxy class for symbol-bound methods
*/
void flext_base::SetupBindProxy()
{
// already initialized?
if(!pxbnd_class) {
#if FLEXT_SYS == FLEXT_SYS_PD
pxbnd_class = class_new(gensym("flext_base bind proxy"),NULL,NULL,sizeof(pxbnd_object),CLASS_PD|CLASS_NOINLET, A_NULL);
add_anything(pxbnd_class,pxbnd_object::px_method); // for symbol-bound methods
#elif FLEXT_SYS == FLEXT_SYS_MAX
pxbnd_class = new t_class;
pxbnd_class->c_sym = gensym("");
pxbnd_class->c_freelist = &px_freelist;
pxbnd_class->c_freefun = NULL;
pxbnd_class->c_size = sizeof(pxbnd_object);
pxbnd_class->c_tiny = 0;
pxbnd_class->c_noinlet = 1;
px_messlist[0].m_sym = (t_symbol *)pxbnd_class;
px_messlist[1].m_sym = gensym("anything");
px_messlist[1].m_fun = (method)pxbnd_object::px_method;
px_messlist[1].m_type[0] = A_GIMME;
px_messlist[1].m_type[1] = 0;
px_messlist[2].m_sym = 0;
#else
#pragma warning("Not implemented!")
#endif
}
}
flext_base::binditem::binditem(int in,const t_symbol *sym,bool (*f)(flext_base *,t_symbol *s,int,t_atom *,void *data),pxbnd_object *p):
item(sym,0,NULL),fun(f),px(p)
{}
flext_base::binditem::~binditem()
{
if(px) {
#if FLEXT_SYS == FLEXT_SYS_PD
pd_unbind(&px->obj.ob_pd,const_cast<t_symbol *>(tag));
#elif FLEXT_SYS == FLEXT_SYS_MAX
if(tag->s_thing == (t_object *)px)
const_cast<t_symbol *>(tag)->s_thing = NULL;
else
error("flext - Binding to symbol %s not found",tag->s_name);
#else
# pragma warning("Not implemented")
#endif
object_free(&px->obj);
}
}
#if FLEXT_SYS == FLEXT_SYS_PD
//! Bind object to a symbol
bool flext_base::Bind(const t_symbol *sym) { pd_bind(&thisHdr()->ob_pd,const_cast<t_symbol *>(sym)); return true; }
//! Unbind object from a symbol
bool flext_base::Unbind(const t_symbol *sym) { pd_unbind(&thisHdr()->ob_pd,const_cast<t_symbol *>(sym)); return true; }
#elif FLEXT_SYS == FLEXT_SYS_MAX
//! Bind object to a symbol
bool flext_base::Bind(const t_symbol *sym) { if(sym->s_thing) return false; else { const_cast<t_symbol *>(sym)->s_thing = (t_object *)thisHdr(); return true; } }
//! Unbind object from a symbol
bool flext_base::Unbind(const t_symbol *sym) { if(sym->s_thing != (t_object *)thisHdr()) return false; else { const_cast<t_symbol *>(sym)->s_thing = NULL; return true; } }
#endif
bool flext_base::BindMethod(const t_symbol *sym,bool (*fun)(flext_base *,t_symbol *s,int argc,t_atom *argv,void *data),void *data)
{
if(!bindhead)
bindhead = new itemarr;
else {
// Search for symbol
if(bindhead->Find(sym,0)) {
post("%s - Symbol already bound",thisName());
return false;
}
}
SetupBindProxy();
#if FLEXT_SYS == FLEXT_SYS_PD
pxbnd_object *px = (pxbnd_object *)object_new(pxbnd_class);
#elif FLEXT_SYS == FLEXT_SYS_MAX
pxbnd_object *px = (pxbnd_object *)newobject(px_messlist);
#else
#pragma warning("Not implemented!")
#endif
if(px) {
binditem *mi = new binditem(0,sym,fun,px);
bindhead->Add(mi);
px->init(this,mi,data);
#if FLEXT_SYS == FLEXT_SYS_PD
pd_bind(&px->obj.ob_pd,const_cast<t_symbol *>(sym));
#elif FLEXT_SYS == FLEXT_SYS_MAX
if(!sym->s_thing)
const_cast<t_symbol *>(sym)->s_thing = (t_object *)px;
else
error("%s - Symbol is already bound",thisName());
#else
# pragma warning("Not implemented")
#endif
}
else
error("%s - Symbol proxy could not be created",thisName());
return true;
}
bool flext_base::UnbindMethod(const t_symbol *sym,bool (*fun)(flext_base *,t_symbol *s,int argc,t_atom *argv,void *data),void **data)
{
bool ok = false;
if(bindhead) {
void *d = NULL;
binditem *it = NULL;
if(sym) {
it = (binditem *)bindhead->Find(sym,0);
while(it) {
if(it->tag == sym && (!fun || it->fun == fun)) break;
}
}
else {
int sz = bindhead->Size();
if(!sz) sz = 1;
for(int i = 0; i < sz; ++i) {
for(it = (binditem *)bindhead->Item(0); it; it = (binditem *)it->nxt) {
if(it->tag == sym && (!fun || it->fun == fun)) break;
}
if(it) break;
}
}
if(it) {
if(data) *data = it->px->data;
ok = bindhead->Remove(it);
if(ok) delete it;
}
}
return ok;
}
void flext_base::pxbnd_object::px_method(pxbnd_object *c,const t_symbol *s,int argc,t_atom *argv)
{
c->item->fun(c->base,(t_symbol *)s,argc,(t_atom *)argv,c->data);
}
|
