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/cvs/deliantra/server/include/cfperl.h
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Comparing deliantra/server/include/cfperl.h (file contents):
Revision 1.1 by root, Thu Aug 24 13:13:49 2006 UTC vs.
Revision 1.40 by root, Tue Dec 19 04:58:04 2006 UTC

1// 1//
2// cfperl.h perl interface 2// cfperl.h perl interface
3// 3//
4#ifndef CFPERL_H__
5#define CFPERL_H__
4 6
7#include <cstdio>
8
9using namespace std;
10
11#include <EXTERN.h>
12#include <perl.h>
13#include <XSUB.h>
14
15#include <EventAPI.h>
16
17#include "callback.h"
18
19// optimisations/workaround for functions requiring my_perl in scope (anti-bloat)
20#undef localtime
21#undef srand48
22#undef drand48
23#undef srandom
24#undef readdir
25#undef getprotobyname
26#undef gethostbyname
27#undef ctime
28#undef strerror
29
30// same here, massive symbol spamming
31#undef do_open
32#undef do_close
33
34// perl bug #40256: perl does overwrite those with reentrant versions
35// but does not initialise their state structures.
36#undef random
37#undef crypt
38
39void cfperl_init ();
5void cfperl_main (); 40void cfperl_main ();
41
42enum event_klass
43{
44 KLASS_NONE,
45 KLASS_GLOBAL,
46 KLASS_CLIENT,
47 KLASS_PLAYER,
48 KLASS_OBJECT,
49 KLASS_MAP,
50 KLASS_COMMAND,
51};
52
53enum event_type
54{
55# define def(klass,name) EVENT_ ## klass ## _ ## name,
56# include "eventinc.h"
57# undef def
58 NUM_EVENT_TYPES
59};
60
61#define ARG_AV(o) DT_AV , static_cast<AV *> (o)
62#define ARG_INT(v) DT_INT , static_cast<int> (v)
63#define ARG_INT64(v) DT_INT64 , static_cast<sint64> (v)
64#define ARG_DOUBLE(v) DT_DOUBLE, static_cast<double> (v)
65#define ARG_STRING(v) DT_STRING, static_cast<const char *> (v)
66#define ARG_DATA(s,l) DT_DATA , static_cast<const void *> (s), int (l)
67#define ARG_OBJECT(o) DT_OBJECT, (void *)static_cast<object *> (o)
68#define ARG_MAP(o) DT_MAP , (void *)static_cast<maptile *> (o)
69#define ARG_PLAYER(o) DT_PLAYER, (void *)static_cast<player *> (o)
70#define ARG_ARCH(o) DT_ARCH , (void *)static_cast<archetype *> (o)
71#define ARG_PARTY(o) DT_PARTY , (void *)static_cast<party *> (o)
72#define ARG_REGION(o) DT_REGION, (void *)static_cast<region *> (o)
73#define ARG_CLIENT(o) DT_CLIENT, (void *)static_cast<client *> (o)
74
75// the ", ## __VA_ARGS" is, unfortunately, a gnu-cpp extension
76
77// all these return true when the normal event processing should be skipped (if any)
78#define INVOKE_(event, ...) cfperl_invoke (event, ## __VA_ARGS__, DT_END)
79
80#define INVOKE(klass, event, ...) INVOKE_(EVENT_ ## klass ## _ ## event, ## __VA_ARGS__)
81#define INVOKE_GLOBAL(event, ...) INVOKE_(EVENT_ ## GLOBAL ## _ ## event, ## __VA_ARGS__)
82#define INVOKE_OBJECT(event, op, ...) INVOKE_(EVENT_ ## OBJECT ## _ ## event, ARG_OBJECT (op), ## __VA_ARGS__)
83#define INVOKE_CLIENT(event, ns, ...) INVOKE_(EVENT_ ## CLIENT ## _ ## event, ARG_CLIENT (ns), ## __VA_ARGS__)
84#define INVOKE_PLAYER(event, pl, ...) INVOKE_(EVENT_ ## PLAYER ## _ ## event, ARG_PLAYER (pl), ## __VA_ARGS__)
85#define INVOKE_MAP(event, map, ...) INVOKE_(EVENT_ ## MAP ## _ ## event, ARG_MAP (map) , ## __VA_ARGS__)
86
87//TODO should index into @result
88#define RESULT(idx,type) cfperl_result_ ## type (idx)
89#define RESULT_DOUBLE(idx) RESULT(idx, DOUBLE)
90#define RESULT_INT(idx) RESULT(idx, INT)
91
92bool cfperl_invoke (event_type event, ...);
93double cfperl_result_DOUBLE (int idx);
94int cfperl_result_INT (int idx);
95
96struct attachable_base
97{
98 SV *self; // CF+ perl self
99 AV *cb; // CF+ callbacks
100 shstr attach; // generic extension attachment information
101
102 void clear (); // called when free'ing objects
103 void optimise (); // possibly save some memory by destroying unneeded data
104 void instantiate (data_type type, void *obj);
105
106 void attachable_clear ()
107 {
108 self = 0;
109 cb = 0;
110 attach = 0;
111 }
112
113 attachable_base ()
114 {
115 attachable_clear ();
116 }
117
118 ~attachable_base ()
119 {
120 clear ();
121 }
122
123 attachable_base (const attachable_base &src)
124 : self (0), cb (0), attach (src.attach)
125 {
126 }
127
128 attachable_base &operator =(const attachable_base &src)
129 {
130 clear ();
131 attach = src.attach;
132 return *this;
133 }
134};
135
136// objects attachable from perl (or any other extension) should include or
137// derive using the curiously recurring template pattern, to avoid
138// virtual method calls etc.
139template<class subclass>
140struct attachable : attachable_base
141{
142 void instantiate ()
143 {
144 if (attach)
145 attachable_base::instantiate ((data_type) cftype<subclass>::dt, static_cast<subclass *>(this));
146 }
147};
148
149struct object_freezer : dynbuf
150{
151 AV *av;
152
153 object_freezer ();
154 ~object_freezer ();
155
156 void put (attachable_base *ext);
157
158 template<class subclass>
159 void put (attachable<subclass> *obj)
160 {
161 put ((attachable_base *)obj);
162 }
163
164 // used only for user-defined key-value pairs
165 void put (const shstr &k, const shstr &v)
166 {
167 add (k);
168
169 if (v)
170 add (' '), add (v);
171
172 add ('\n');
173 }
174
175 //TODO//temporary, used only for saving body locations
176 void put (const char *k, int v)
177 {
178 add (k);
179 add (' ');
180 add (sint32 (v));
181 add ('\n');
182 }
183
184 template<typename T>
185 void put_string (keyword k, const T &v)
186 {
187 int klen = keyword_len [k];
188 int vlen = v ? strlen (v) + 1 : 0;
189
190 char *p = (char *)alloc (klen + vlen + 1);
191
192 memcpy (p, keyword_str [k], klen); p += klen;
193
194 if (v)
195 {
196 *p++ = ' '; vlen--;
197 memcpy (p, v, vlen); p += vlen;
198 }
199
200 *p = '\n';
201 }
202
203 void put (keyword k, const char *v)
204 {
205 put_string (k, v);
206 }
207
208 void put (keyword k, const shstr &v)
209 {
210 put_string (k, v);
211 }
212
213 void put (keyword k, double v)
214 {
215 char buf [128];
216
217 snprintf (buf, 128, "%.7g", v);
218
219 put (k, (const char *)buf);
220 }
221
222 void put_(keyword k, sint64 v)
223 {
224 add (keyword_str [k], keyword_len [k]);
225 add (' ');
226 add (v);
227 add ('\n');
228 }
229
230 void put_(keyword k, sint32 v)
231 {
232 add (keyword_str [k], keyword_len [k]);
233 add (' ');
234 add (v);
235 add ('\n');
236 }
237
238 void put (keyword kbeg, keyword kend, const shstr &v)
239 {
240 add (keyword_str [kbeg], keyword_len [kbeg]); add ('\n');
241
242 if (v)
243 {
244 add (v);
245 add ('\n');
246 }
247
248 add (keyword_str [kend], keyword_len [kend]); add ('\n');
249 }
250
251 void put (keyword k, float v) { put (k, (double)v); }
252 void put (keyword k, signed char v) { put_(k, (sint32)v); }
253 void put (keyword k, unsigned char v) { put_(k, (sint32)v); }
254 void put (keyword k, signed short v) { put_(k, (sint32)v); }
255 void put (keyword k, unsigned short v) { put_(k, (sint32)v); }
256 void put (keyword k, signed int v) { put_(k, (sint32)v); }
257 void put (keyword k, unsigned int v) { put_(k, (sint64)v); }
258 void put (keyword k, signed long v) { put_(k, (sint64)v); }
259 void put (keyword k, unsigned long v) { put_(k, (sint64)v); }
260 void put (keyword k, signed long long v) { put_(k, (sint64)v); }
261 void put (keyword k, unsigned long long v) { put_(k, (sint64)v); }
262
263 template<typename T>
264 void put (keyword k, const T *v)
265 {
266 if (v)
267 put (k, v->name);
268 else
269 put (k, (const char *)0);
270 }
271
272 template<typename T>
273 void put (keyword k, const refptr<T> &v)
274 {
275 put (k, (T *)v);
276 }
277
278 bool save (const char *filename);
279 char *as_string (); // like strdup
280
281 operator bool () { return !!av; }
282};
283
284// compatibility support, should be removed when no longer needed
285int fprintf (object_freezer &freezer, const char *format, ...);
286int fputs (const char *s, object_freezer &freezer);
287
288struct object_thawer
289{
290 SV *text; // text part
291 AV *av; // perl part
292 char *line; // current beginning of line
293 char *last_value;
294
295 operator bool () { return !!text; }
296
297 object_thawer (const char *filename = 0);
298 object_thawer (const char *data, AV *perlav);
299 ~object_thawer ();
300
301 void get (data_type type, void *obj, attachable_base *ext, int oid);
302
303 template<class subclass>
304 void get (attachable<subclass> *obj, int oid)
305 {
306 if (av)
307 get ((data_type) cftype<subclass>::dt, (subclass *)obj, obj, oid);
308 }
309
310 keyword get_kv (); // also parse value for later use
311
312 const char *get_str () { return last_value; } // may be 0
313
314 void get (shstr &sh) const;
315 void get_ornull (shstr &sh) const { sh = last_value; }
316 void get_ml (keyword kend, shstr &sh);
317
318 sint32 get_sint32 () const;
319 sint64 get_sint64 () const;
320 double get_double () const;
321
322 void get (float &v) { v = get_double (); }
323 void get (double &v) { v = get_double (); }
324
325 void get (sint8 &i) { i = get_sint32 (); }
326 void get (uint8 &i) { i = get_sint32 (); }
327 void get (sint16 &i) { i = get_sint32 (); }
328 void get (uint16 &i) { i = get_sint32 (); }
329 void get (sint32 &i) { i = get_sint32 (); }
330
331 void get (uint32 &i) { i = get_sint64 (); }
332 void get (sint64 &i) { i = get_sint64 (); }
333};
334
335char *fgets (char *s, int n, object_thawer &thawer);
336
337struct watcher_base
338{
339 static struct EventAPI *GEventAPI;
340};
341
342template<class base>
343struct watcher : watcher_base
344{
345 base *pe;
346
347 void start (bool repeat = false) { GEventAPI->start ((pe_watcher *)pe, repeat); }
348 void stop (bool cancel_events = false) { GEventAPI->stop ((pe_watcher *)pe, cancel_events); }
349 void now () { GEventAPI->now ((pe_watcher *)pe); }
350 void suspend () { GEventAPI->suspend ((pe_watcher *)pe); }
351 void resume () { GEventAPI->resume ((pe_watcher *)pe); }
352
353 void prio (int new_prio) { ((pe_watcher *)pe)->prio = new_prio; }
354
355 ~watcher ()
356 {
357 cancel ();
358 }
359
360private:
361 void cancel () { GEventAPI->cancel ((pe_watcher *)pe); } // private
362};
363
364struct iw : watcher<pe_idle>, callback<void (iw &)>
365{
366 template<class O, class M>
367 iw (O object, M method)
368 : callback<void (iw &)> (object, method)
369 {
370 alloc ();
371 }
372
373private:
374 void alloc ();
375};
376
377struct iow : watcher<pe_io>, callback<void (iow &, int)>
378{
379 template<class O, class M>
380 iow (O object, M method)
381 : callback<void (iow &, int)> (object, method)
382 {
383 alloc ();
384 }
385
386 void fd (int fd);
387 int poll ();
388 void poll (int events);
389
390private:
391 void alloc ();
392};
393
394#endif
395

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