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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
|
/*
flext - C++ layer for Max/MSP and pd (pure data) externals
Copyright (c) 2001-2004 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 flmsg.cpp
\brief Message processing of flext base class.
*/
#include "flext.h"
bool flext_base::CallMeth(const MethItem &m,int argc,const t_atom *argv)
{
bool ret = false;
int ix;
t_any aargs[FLEXT_MAXMETHARGS];
bool ok = true;
for(ix = 0; ix < argc && ok; ++ix) {
switch(m.args[ix]) {
case a_float: {
if(IsFloat(argv[ix])) aargs[ix].ft = GetFloat(argv[ix]);
else if(IsInt(argv[ix])) aargs[ix].ft = (float)GetInt(argv[ix]);
else ok = false;
if(ok) FLEXT_LOG2("int arg %i = %f",ix,aargs[ix].ft);
break;
}
case a_int: {
if(IsFloat(argv[ix])) aargs[ix].it = (int)GetFloat(argv[ix]);
else if(IsInt(argv[ix])) aargs[ix].it = GetInt(argv[ix]);
else ok = false;
if(ok) FLEXT_LOG2("float arg %i = %i",ix,aargs[ix].it);
break;
}
case a_symbol: {
if(IsSymbol(argv[ix])) aargs[ix].st = GetSymbol(argv[ix]);
else ok = false;
if(ok) FLEXT_LOG2("symbol arg %i = %s",ix,GetString(aargs[ix].st));
break;
}
#if FLEXT_SYS == FLEXT_SYS_PD
case a_pointer: {
if(IsPointer(argv[ix])) aargs[ix].pt = (t_gpointer *)GetPointer(argv[ix]);
else ok = false;
break;
}
#endif
default:
error("Argument type illegal");
ok = false;
}
}
if(ok && ix == argc) {
switch(argc) {
case 0: ret = ((methfun_0)m.fun)(this); break;
case 1: ret = ((methfun_1)m.fun)(this,aargs[0]); break;
case 2: ret = ((methfun_2)m.fun)(this,aargs[0],aargs[1]); break;
case 3: ret = ((methfun_3)m.fun)(this,aargs[0],aargs[1],aargs[2]); break;
case 4: ret = ((methfun_4)m.fun)(this,aargs[0],aargs[1],aargs[2],aargs[3]); break;
case 5: ret = ((methfun_5)m.fun)(this,aargs[0],aargs[1],aargs[2],aargs[3],aargs[4]); break;
}
}
return ret;
}
bool flext_base::TryMethTag(Item *lst,const t_symbol *tag,int argc,const t_atom *argv)
{
for(; lst; lst = lst->nxt) {
MethItem *m = (MethItem *)lst;
// FLEXT_LOG3("found method tag %s: inlet=%i, argc=%i",GetString(tag),m->inlet,argc);
if(m->attr) {
// attributes are treated differently
if(m->attr->IsGet())
return DumpAttrib(tag,m->attr);
else
return SetAttrib(tag,m->attr,argc,argv);
}
else {
if(m->argc == 1) {
// try list
if(m->args[0] == a_list && ((methfun_V)m->fun)(this,argc,const_cast<t_atom *>(argv))) return true;
// try anything
if(m->args[0] == a_any && ((methfun_A)m->fun)(this,tag,argc,const_cast<t_atom *>(argv))) return true;
}
// try matching number of args
if(argc == m->argc && CallMeth(*m,argc,argv)) return true;
}
}
return false;
}
bool flext_base::TryMethSym(Item *lst,const t_symbol *s)
{
for(; lst; lst = lst->nxt) {
MethItem *m = (MethItem *)lst;
if(!m->IsAttr()) {
// FLEXT_LOG3("found symbol method for %s: inlet=%i, symbol=%s",GetString(m->tag),m->inlet,GetString(s));
t_any sym; sym.st = const_cast<t_symbol *>(s);
if(((methfun_1)m->fun)(this,sym)) return true;
}
}
return false;
}
bool flext_base::TryMethAny(Item *lst,const t_symbol *s,int argc,const t_atom *argv)
{
for(; lst; lst = lst->nxt) {
MethItem *m = (MethItem *)lst;
if(!m->IsAttr() && m->argc == 1 && m->args[0] == a_any) {
// FLEXT_LOG4("found any method for %s: inlet=%i, symbol=%s, argc=%i",GetString(m->tag),m->inlet,GetString(s),argc);
if(((methfun_A)m->fun)(this,s,argc,const_cast<t_atom *>(argv))) return true;
}
}
return false;
}
/*! \brief Find a method item for a specific tag and arguments
\remark All attributes are also stored in the method list and retrieved by a member of the method item
*/
bool flext_base::FindMeth(int inlet,const t_symbol *s,int argc,const t_atom *argv)
{
Item *lst;
// search for exactly matching tag
if((lst = methhead->FindList(s,inlet)) != NULL && TryMethTag(lst,s,argc,argv)) return true;
if((lst = clmethhead->FindList(s,inlet)) != NULL && TryMethTag(lst,s,argc,argv)) return true;
// if no list args, then search for pure symbol
if(!argc) {
if((lst = methhead->FindList(sym_symbol,inlet)) != NULL && TryMethSym(lst,s)) return true;
if((lst = clmethhead->FindList(sym_symbol,inlet)) != NULL && TryMethSym(lst,s)) return true;
}
// otherwise search for anything
if((lst = methhead->FindList(sym_anything,inlet)) != NULL && TryMethAny(lst,s,argc,argv)) return true;
if((lst = clmethhead->FindList(sym_anything,inlet)) != NULL && TryMethAny(lst,s,argc,argv)) return true;
// if nothing found try any inlet
return inlet >= 0 && FindMeth(-1,s,argc,argv);
}
/*! \brief All the message processing
The messages of all the inlets go here and are promoted to the registered callback functions
*/
bool flext_base::m_methodmain(int inlet,const t_symbol *s,int argc,const t_atom *argv)
{
static bool trap = false;
curtag = s;
// post("methodmain inlet:%i args:%i symbol:%s",inlet,argc,s?GetString(s):"");
bool ret = FindMeth(inlet,s,argc,argv);
if(ret) goto end;
#if FLEXT_SYS == FLEXT_SYS_MAX
// If float message is not explicitly handled: try int handler instead
if(argc == 1 && s == sym_float && !trap) {
t_atom fl;
SetInt(fl,GetAInt(argv[0]));
trap = true;
ret = m_methodmain(inlet,sym_int,1,&fl);
trap = false;
}
if(ret) goto end;
// If int message is not explicitly handled: try float handler instead
if(argc == 1 && s == sym_int && !trap) {
t_atom fl;
SetFloat(fl,GetAFloat(argv[0]));
trap = true;
ret = m_methodmain(inlet,sym_float,1,&fl);
trap = false;
}
if(ret) goto end;
#endif
// If float or int message is not explicitly handled: try list handler instead
if(!trap && argc == 1 && (s == sym_float
#if FLEXT_SYS == FLEXT_SYS_MAX
|| s == sym_int
#endif
)) {
t_atom list;
if(s == sym_float)
SetFloat(list,GetFloat(argv[0]));
#if FLEXT_SYS == FLEXT_SYS_MAX
else if(s == sym_int)
SetInt(list,GetInt(argv[0]));
#endif
trap = true;
ret = m_methodmain(inlet,sym_list,1,&list);
trap = false;
}
if(ret) goto end;
// If symbol message (pure anything without args) is not explicitly handled: try list handler instead
if(!trap && argc == 0) {
t_atom list;
SetSymbol(list,s);
trap = true;
ret = m_methodmain(inlet,sym_list,1,&list);
trap = false;
}
if(ret) goto end;
// if distmsgs is switched on then distribute list elements over inlets (Max/MSP behavior)
if(distmsgs && !trap && inlet == 0 && s == sym_list && insigs <= 1) {
int i = incnt;
if(i > argc) i = argc;
for(--i; i >= 0; --i) { // right to left distribution
const t_symbol *sym = NULL;
if(IsFloat(argv[i])) sym = sym_float;
else if(IsInt(argv[i])) sym = sym_int;
else if(IsSymbol(argv[i])) sym = sym_symbol;
#if FLEXT_SYS == FLEXT_SYS_PD
else if(IsPointer(argv[i])) sym = sym_pointer; // can pointer atoms occur here?
#endif
if(sym) {
trap = true;
m_methodmain(i,sym,1,argv+i);
trap = false;
}
}
ret = true;
}
if(!ret && !trap) ret = m_method_(inlet,s,argc,argv);
end:
curtag = NULL;
return ret; // true if appropriate handler was found and called
}
bool flext_base::m_method_(int inlet,const t_symbol *s,int argc,const t_atom *argv)
{
//#ifdef FLEXT_DEBUG
post("%s: message unhandled - inlet:%i args:%i symbol:%s",thisName(),inlet,argc,s?GetString(s):"");
//#endif
return false;
}
|
