[ViewVC] Diff of: cvs/deliantra/server/lib/cf/match.pm

Comparing deliantra/server/lib/cf/match.pm (file contents):
Revision 1.9 by root, Sun Oct 11 00:24:35 2009 UTC vs.
Revision 1.22 by root, Sat Oct 24 11:45:40 2009 UTC

…		…
25		25
26	Find all potions with spell objects inside them in someones inventory:	26	Find all potions with spell objects inside them in someones inventory:
27		27
28	type=SPELL in type=POTION in inv	28	type=SPELL in type=POTION in inv
29		29
30	Find all potions inside someones inventory, or inside applied containers:	30	Find all scrolls inside someones inventory, or inside applied scroll
		31	containers:
31		32
32	type=POTION also in type=CONTAINER and applied in inv	33	type=SCROLL also in applied type=CONTAINER race="scroll" in inv
		34
		35	Find all unpaid items, anywhere, even deeply nested inside other items, in
		36	the originator:
		37
		38	unpaid also deep in inv of originator
33		39
34	=head1 MATCH EXPRESSIONS	40	=head1 MATCH EXPRESSIONS
35		41
36	=head2 STRUCTURE	42	=head2 STRUCTURE
37		43
38	The two main structures are the C<match>, which selects objects matching	44	The two main structures are the C<match>, which selects objects matching
39	various criteria, and the C<condition, which determines if an object	45	various criteria, and the C<condition, which determines if an object
40	matches some desired properties:	46	matches some desired properties:
41		47
42	condition	48	condition
43	condition in set	49	condition in set-modifier
		50	condition of root-object
44		51
45	A C<cond> receives a set of "context objects" that it is applied to. This	52	A C<condition> receives a set of "context objects" that it is applied
46	is initially just one object - for altars, it is the object dropped on it,	53	to. This is initially just one object - by default, for altars, it is the
47	for pedestals, the object on top of it and so on.	54	object dropped on it, for pedestals, the object on top of it and so on.
48		55
49	This set of context objects can be modified in various ways, for example	56	This set of context objects can be modified in various ways, for example
50	by replacing it with the inventories of all objects, or all objects on the	57	by replacing it with the inventories of all objects, or all items on the
51	same mapspace, and so on, by using the C<in> operator:	58	same mapspace, and so on, by using the C<in> operator:
52		59
53	condition in inv	60	condition in inv
		61	condition in map
		62
		63	Also, besides the default root object where all this begins, you can start
		64	elsewhere, for example in the I<originator> (usually the player):
		65
54	condition in inv in originator	66	condition in inv of originator
55		67
56	Once the set of context objects has been established, each object is	68	Once the final set of context objects has been established, each object
57	matched against the C<cond> expression. Sometimes the server is only	69	is matched against the C<condition>.
58	interested in knowing whether I<anything> matches, and sometimes the	70
59	server is interested in I<all> objects that match.	71	It is possible to chain modifiers from right-to-left, so this example
		72	would start with the originator, take it's inventory, find all inventory
		73	items which are potions, looks into their inventory, and then finds all
		74	spells.
		75
		76	type=SPELL in type=POTION in inv of originator
		77
		78	Sometimes the server is only interested in knowing whether I<anything>
		79	matches, and sometimes the server is interested in I<all> objects that
		80	match.
60		81
61	=head2 OPERATORS	82	=head2 OPERATORS
62		83
63	=over 4	84	=over 4
64		85
65	=item and, or, not, ()	86	=item and, or, not, ()
66		87
67	Conditions can be combined with C<and> or C<or> to build larger	88	Conditions can be combined with C<and> or C<or> to build larger
68	expressions. C<not> negates the expression, and parentheses can be used to	89	expressions. C<not> negates the condition, and parentheses can be used to
69	group conditions.	90	override operator precedence and execute submatches.
		91
		92	Not that C<not> only negates a condition and not the whole match
		93	expressions, thus
		94
		95	not applied in inv
		96
		97	is true if there is I<any> non-object in the inventory. To negate a whole
		98	match, you have to use a sub-match. To check whether there is I<no>
		99	applied object in someones inventory, write this:
		100
		101	not (applied in inv)
70		102
71	Example: match applied weapons.	103	Example: match applied weapons.
72		104
73	type=WEAPON and applied	105	applied type=WEAPON
74		106
75	Example: match horns or rods.	107	Example: match horns or rods.
76		108
77	type=HORN or type=ROD	109	type=HORN or type=ROD
78		110
…		…
84	the match, the C<in> operator lets you look at other sets of objects, most	116	the match, the C<in> operator lets you look at other sets of objects, most
85	often the inventory.	117	often the inventory.
86		118
87	=over 4	119	=over 4
88		120
89	=item in object
90
91	Replaces all objects by the default object - this is the object passed to
92	the match to match against by default. All matches have an explicit C<in
93	ctx> appended.
94
95	This must be the last C<in> expression in a match.
96
97	=item in source
98
99	Replaces all objects by the source object - this object is sometimes
100	passed to matches and represents the object is the source of the action,
101	such as a rod or a potion when it is applied. Often, the I<source> is the
102	same as the I<originator>.
103
104	This must be the last C<in> expression in a match.
105
106	=item in originator
107
108	Replaces all objects by the originator object - one step farther removed
109	than the I<source>, the I<originator> is sometimes passed to matches and
110	represents the original initiator of an action, most commonly a player or
111	monster.
112
113	=item in self
114
115	Replaces all objects by the object initiating/asking for the match - this
116	is basically always the object thatt he match expression is attached to.
117
118	This must be the last C<in> expression in a match.
119
120	=item in inv	121	=item in inv
121		122
122	Replaces all objects by their inventory.	123	Replaces all objects by their inventory.
123		124
124	Example: find all spell objects inside the object to be matched.	125	Example: find all spell objects inside the object to be matched.
…		…
127		128
128	=item in env	129	=item in env
129		130
130	Replaces all objects by their containing object, if they have one.	131	Replaces all objects by their containing object, if they have one.
131		132
		133	=item in arch
		134
		135	Replaces all objects by their archetypes.
		136
132	=item in map	137	=item in map
133		138
134	Replaces all objects by the objects that are on the same mapspace as them.	139	Replaces all objects by the objects that are on the same mapspace as them.
135		140
		141	=item in head
		142
		143	Replaces all objects by their head objects.
		144
136	=item in <cond>	145	=item in <condition>
137		146
138	Finds all context objects matching the condition, and then puts their	147	Finds all context objects matching the condition, and then puts their
139	inventories into the context set.	148	inventories into the context set.
140		149
141	Note that C<in inv> is simply a special case of an C<< in <cond> >> that	150	Note that C<in inv> is simply a special case of an C<< in <condition> >> that
142	matches any object.	151	matches any object.
143		152
144	Example: find all spells inside potions inside the inventory of the context	153	Example: find all spells inside potions inside the inventory of the context
145	object(s).	154	object(s).
146		155
…		…
153		162
154	Example: check if the context object I<is> a spell, or I<contains> a spell.	163	Example: check if the context object I<is> a spell, or I<contains> a spell.
155		164
156	type=SPELL also in inv	165	type=SPELL also in inv
157		166
158	=item repeatedly in ...	167	=item also deep in ...
159		168
160	Repeats the operation as many times as possible. This can be used to	169	Repeats the operation as many times as possible. This can be used to
161	recursively look into objects.	170	recursively look into objects.
162		171
163	=item also repeatedly in ...	172	So for example, C<also deep in inv> means to take the inventory of all
		173	objects, taking their inventories, and so on, and adding all these objects
		174	to the context set.
164		175
165	C<also> and C<repeatedly> can be combined.	176	Similarly, C<also deep in env> means to take the environment object, their
		177	environemnt object and so on.
166		178
167	Example: check if there are any unpaid items in an inventory,	179	Example: check if there are any unpaid items in an inventory,
168	or in the inventories of the inventory objects, and so on.	180	or in the inventories of the inventory objects, and so on.
169		181
170	unpaid also repeatedly in inv	182	unpaid also deep in inv
171		183
172	Example: check if a object is inside a player.	184	Example: check if a object is inside a player.
173		185
174	type=PLAYER also repeatedly in env	186	type=PLAYER also deep in env
175		187
176	=back	188	=back
		189
		190	=item of ...
		191
		192	By default, all matches are applied to the "obviously appropriate" object,
		193	such as the item dropped on a button or moving over a detector. This can
		194	be changed to a number of other objects - not all of them are available
		195	for each match (when not available, the match will simply fail).
		196
		197	An C<of> term ends a match, nothing is allowed to follow.
		198
		199	=over 4
		200
		201	=item of object
		202
		203	Starts with the default object - this is the object passed to the match to
		204	match against by default. Matches have an explicit C<of object> appended,
		205	but submatches start at the current object, and in this case C<of object>
		206	can be used to start at the original object once more.
		207
		208	=item of source
		209
		210	Starts with the I<source> object - this object is sometimes passed to
		211	matches and represents the object that is the source of the action, such
		212	as a rod or a potion when it is applied. Often, the I<source> is the same
		213	as the I<originator>.
		214
		215	=item of originator
		216
		217	Starts with the I<originator> - one step farther removed than the
		218	I<source>, the I<originator> is sometimes passed to matches and represents
		219	the original initiator of an action, most commonly a player or monster.
		220
		221	This object is often identical to the I<source> (e.g. when a player casts
		222	a spell, the player is both source and originator).
		223
		224	=item of self
		225
		226	Starts with the object initiating/asking for the match - this is basically
		227	always the object that the match expression is attached to.
177		228
178	=back	229	=back
179		230
180	=head2 EXPRESSIONS	231	=head2 EXPRESSIONS
181		232
…		…
212	=item { BLOCK }	263	=item { BLOCK }
213		264
214	You can specify perl code to execute by putting it inside curly	265	You can specify perl code to execute by putting it inside curly
215	braces. The last expression evaluated inside will become the result.	266	braces. The last expression evaluated inside will become the result.
216		267
		268	The perlcode can access C<$_>, which rferes to the object currently being
		269	matches, and the C<$object>, C<$self>, C<$source> and C<$originator>.
		270
		271	Example: check whether the slaying field consists of digits only.
		272
		273	{ $_->slaying =~ /^\d+$/ }
		274
217	=item comparisons, <, <=, ==, =, !=, =>, >	275	=item comparisons, <, <=, ==, =, !=, =>, >
218		276
219	You can compare expressions against constants via any of these	277	You can compare expressions against constants via any of these
220	operators. If the constant is a string, then a string compare will be	278	operators. If the constant is a string, then a string compare will be
221	done, otherwise a numerical comparison is used.	279	done, otherwise a numerical comparison is used.
…		…
243	=item any	301	=item any
244		302
245	This simply evaluates to true, and simply makes matching I<any> object a	303	This simply evaluates to true, and simply makes matching I<any> object a
246	bit easier to read.	304	bit easier to read.
247		305
		306	=item none
		307
		308	This simply evaluates to false, and simply makes matching I<never> a bit
		309	easier to read.
		310
248	=item has(cond)	311	=item has(condition)
249		312
250	True iff the object has a matching inventory object.	313	True iff the object has a matching inventory object.
251		314
252	=item count(match)	315	=item count(match)
253		316
254	Number of matching objects - the context object for the C<match> are the	317	Number of matching objects - the context object for the C<match> is the
255	original context objects for the overall C<match>. # TODO bullshit	318	currently tested object - you can override this with an C<in object> for
		319	example.
256		320
257	=item match(match)	321	=item dump()
258		322
259	An independent match - unlike C<count>, it only matters whether the match	323	Dumps the object to the server log when executed, and evaluates to true.
260	finds any object (which is faster).	324
		325	Note that logical operations are short-circuiting, so this only dumps
		326	potions:
		327
		328	type=POTION and dump()
261		329
262	=back	330	=back
263		331
264	=head2 GRAMMAR	332	=head2 GRAMMAR
265		333
…		…
267	module. It is meant to be easily readable by humans, not to implement it	335	module. It is meant to be easily readable by humans, not to implement it
268	exactly as-is.	336	exactly as-is.
269		337
270	# object matching and selecting	338	# object matching and selecting
271		339
272	match = set	340	match = chain
		341	\| chain 'of' root
		342	root = 'object' \| 'self' \| 'source' \| 'originator'
		343	chain = condition
273	\| match also rep 'in' set	344	\| chain also deep 'in' modifier
274	also = nothing \| 'also'	345	also = nothing \| 'also'
275	rep = nothing \| 'rep' \| 'repeatedly'	346	deep = nothing \| 'deep'
		347	modifier ='inv' \| 'env' \| 'arch' \| 'map' \| 'head'
276		348
277	set = 'inv' \| 'env' \| 'map'	349	nothing =
278	\| 'object' \| 'source' \| 'originator' \| 'self'
279
280	empty =
281		350
282	# boolean matching condition	351	# boolean matching condition
283		352
284	condition = factor	353	condition = factor
285	\| factor 'and'? cond	354	\| factor 'and'? condition
286	\| factor 'or' cond	355	\| factor 'or' condition
287		356
288	factor = 'not' factor	357	factor = 'not' factor
289	\| '(' cond ')'	358	\| '(' match ')'
290	\| expr	359	\| expr
291	\| expr operator constant	360	\| expr operator constant
292		361
293	operator = '=' \| '==' \| '!=' \| '<' \| '<=' \| '>' \| '>='	362	operator = '=' \| '==' \| '!=' \| '<' \| '<=' \| '>' \| '>='
294		363
295	expr = flag	364	expr = flag
296	\| sattr	365	\| sattr
297	\| aattr '[' <constant> ']'	366	\| aattr '[' <constant> ']'
		367	\| 'stat.' statattr
298	\| special	368	\| special
299	\| func '(' args ')'	369	\| func '(' args ')'
300	\| '{' perl code block '}'	370	\| '{' perl code block '}'
301		371
302	func = <any function name>	372	func = <any function name>
303	sattr = <any scalar object attribute>	373	sattr = <any scalar object attribute>
304	aattr = <any array object attribute>	374	aattr = <any array object attribute>
305	flag = <any object flag>	375	flag = <any object flag>
		376	statattr = <any stat attribute: exp, food, str, dex, hp, maxhp...>
306	special = <any ()-less "function">	377	special = <any ()-less "function">
307		378
308	constant = <number> \| '"' <string> '"' \| <uppercase cf::XXX name>	379	constant = <number> \| '"' <string> '"' \| <uppercase cf::XXX name>
309	args = <depends on function>	380	args = <depends on function>
310		381
311	TODO: repeatedly, env, contains, possbly matches	382	TODO: contains, matches, query_name, selling_price, buying_price?
312		383
313	=cut	384	=cut
314		385
		386	=head2 PERL FUNCTIONS
		387
		388	=over 4
		389
		390	=cut
315		391
316	package cf::match;	392	package cf::match;
317		393
318	use common::sense;	394	use common::sense;
319		395
320	use List::Util ();	396	use List::Util ();
321
322	# parser state
323	# $_ # string to be parsed
324	our $all; # find all, or just the first matching object
325		397
326	{	398	{
327	package cf::match::exec;	399	package cf::match::exec;
328		400
329	use List::Util qw(first);	401	use List::Util qw(first);
330
331	sub env_chain {
332	my @res;
333	push @res, $_
334	while $_ = $_->env;
335	@res
336	}
337		402
338	package cf::match::parser;	403	package cf::match::parser;
339		404
340	use common::sense;	405	use common::sense;
341		406
342	sub ws {	407	sub ws {
343	/\G\s+/gc;	408	/\G\s+/gc;
344	}	409	}
345		410
		411	sub condition ();
		412	sub match ($$);
		413
346	our %func = (	414	our %func = (
347	has => sub {	415	has => sub {
348	'first { ' . &condition . ' } $_->inv'	416	'first { ' . condition . ' } $_->inv'
349	},	417	},
350	count => sub {	418	count => sub {
351	local $all = 1;
352	'(scalar ' . &match . ')'	419	'(scalar ' . (match 1, '$_') . ')'
353	},	420	},
354	match => sub {	421	dump => sub {
355	local $all = 0;	422	'do {
356	'(scalar ' . &match . ')'	423	warn "cf::match::match dump:\n"
		424	. "self: " . eval { $self->name } . "\n"
		425	. $_->as_string;
		426	1
		427	}';
357	},	428	},
358	);	429	);
359		430
360	our %special = (	431	our %special = (
361	any => sub {	432	any => sub {
362	1	433	1
363	},	434	},
		435	none => sub {
		436	0
		437	},
364	);	438	);
365		439
366	sub constant {	440	sub constant {
367	ws;	441	ws;
368		442
…		…
376	}	450	}
377		451
378	our $flag = $cf::REFLECT{object}{flags};	452	our $flag = $cf::REFLECT{object}{flags};
379	our $sattr = $cf::REFLECT{object}{scalars};	453	our $sattr = $cf::REFLECT{object}{scalars};
380	our $aattr = $cf::REFLECT{object}{arrays};	454	our $aattr = $cf::REFLECT{object}{arrays};
		455	our $lattr = $cf::REFLECT{living}{scalars};
381		456
382	sub expr {	457	sub expr {
383	# ws done by factor	458	# ws done by factor
384	my $res;	459	my $res;
385		460
…		…
388		463
389	my $expr = $1;	464	my $expr = $1;
390		465
391	$res .= $expr =~ /\{([^;]+)\}/ ? $1 : "do $expr";	466	$res .= $expr =~ /\{([^;]+)\}/ ? $1 : "do $expr";
392		467
		468	} elsif (/\Gstats\.([A-Za-z0-9_]+)/gc) {
		469
		470	if (exists $lattr->{$1}) {
		471	$res .= "\$_->stats->$1";
		472	} elsif (exists $lattr->{"\u$1"}) {
		473	$res .= "\$_->stats->\u$1";
		474	} else {
		475	die "living statistic name expected (str, pow, hp, sp...)\n";
		476	}
		477
393	} elsif (/\G([A-Za-z0-9_]+)/gc) {	478	} elsif (/\G([A-Za-z0-9_]+)/gc) {
394		479
395	if (my $func = $func{$1}) {	480	if (my $func = $func{$1}) {
396	/\G\s*\(/gc	481	/\G\s*\(/gc
397	or die "'(' expected after function name\n";	482	or die "'(' expected after function name\n";
…		…
425	} else {	510	} else {
426	$res .= constant;	511	$res .= constant;
427	}	512	}
428		513
429	} else {	514	} else {
		515	Carp::cluck;#d#
430	die "expr expected\n";	516	die "expr expected\n";
431	}	517	}
432		518
433	$res	519	$res
434	}	520	}
…		…
451	$res .= "!";	537	$res .= "!";
452	}	538	}
453		539
454	if (/\G\(/gc) {	540	if (/\G\(/gc) {
455	# ()	541	# ()
456	$res .= &condition;	542
457	ws;	543	$res .= '(' . (match 0, '$_') . ')';
		544
458	/\G\)/gc or die "')' expected\n";	545	/\G\s*\)/gc or die "closing ')' expected\n";
459		546
460	} else {	547	} else {
461	my $expr = expr;	548	my $expr = expr;
462		549
463	$res .= $expr;	550	$res .= $expr;
…		…
474	}	561	}
475		562
476	"($res)"	563	"($res)"
477	}	564	}
478		565
479	sub condition {	566	sub condition () {
480	my $res = factor;	567	my $res = factor;
481		568
482	while () {	569	while () {
483	ws;	570	ws;
		571
		572	# first check some stop-symbols, so we don't have to backtrack
484	if (/\G(?=also\b\|in\b\|\)\|$)/gc) {	573	if (/\G(?=also\b\|deep\b\|in\b\|of\b\|\)\|\z)/gc) {
485	# early stop => faster and requires no backtracking	574	pos = pos; # argh. the misop hits again. again. again. again. you die.
486	last;	575	last;
		576
487	} elsif (/\Gor\b/gc) {	577	} elsif (/\Gor\b/gc) {
488	$res .= " \|\| ";	578	$res .= " \|\| ";
		579
489	} else {	580	} else {
490	/\Gand\b/gc;	581	/\Gand\b/gc;
491	$res .= " && ";	582	$res .= " && ";
492	}	583	}
493	$res .= factor;	584	$res .= factor;
494	}	585	}
495		586
496	$res	587	$res
497	}	588	}
498		589
499	sub match {	590	sub match ($$) {
500	my $res;	591	my ($wantarray, $defctx) = @_;
501		592
502	my $also; # undef means first iteration	593	my $res = condition;
		594
		595	# if nothing follows, we have a simple condition, so
		596	# optimise a comon case.
		597	if ($defctx eq '$_' and /\G\s*(?=\)\|$)/gc) {
		598	return $wantarray
		599	? "$res ? \$_ : ()"
		600	: $res;
		601	}
		602
		603	$res = ($wantarray ? " grep { " : " first { ") . $res . "}";
		604
503	while () {	605	while () {
504	if (/\G\s*(inv\|env\|map\|object\|subject\|originator)\b/gc) {	606	ws;
		607
		608	my $also = /\Galso\s+/gc + 0;
		609	my $deep = /\Gdeep\s+/gc + 0;
		610
		611	if (/\Gin\s+/gc) {
		612	my $expand;
		613
		614	if (/\G(inv\|env\|map\|arch\|head)\b/gc) {
505	if ($1 eq "inv") {	615	if ($1 eq "inv") {
506	$res .= " map+(${also}\$_->inv),";	616	$expand = "map \$_->inv,";
507	} elsif ($1 eq "env") {	617	} elsif ($1 eq "env") {
508	$res .= " map+(${also}env_chain), "; # TODO	618	$expand = "map \$_->env // (),";
		619	} elsif ($1 eq "head") {
		620	$expand = "map \$_->head,";
		621	$deep = 0; # infinite loop otherwise
		622	} elsif ($1 eq "arch") {
		623	$expand = "map \$_->arch,";
		624	$deep = 0; # infinite loop otherwise
509	} elsif ($1 eq "map") {	625	} elsif ($1 eq "map") {
510	$res .= " map+(${also}\$_->map->at (\$_->x, \$_->y)),";	626	$expand = "map \$_->map->at (\$_->x, \$_->y),";
511	} elsif ($1 eq "self") {	627	$deep = 0; # infinite loop otherwise
512	return "$res \$self";	628	}
513	} elsif ($1 eq "object") {	629	} else {
514	last; # default	630	$expand = "map \$_->inv, grep { " . condition . " }";
515	} elsif ($1 eq "source") {
516	return "$res \$source";
517	} elsif ($1 eq "originator") {
518	return "$res \$originator";
519	}	631	}
520	last unless /\G\s*in\b/gc;	632
		633	if ($also \|\| $deep) {
		634	$res .= " do {\n"
		635	. " my \@res;\n";
		636	$res .= " while (\@_) {\n" if $deep;
		637	$res .= " push \@res, \@_;\n" if $also;
		638	$res .= " \@_ = $expand \@_;\n";
		639	$res .= " }\n" if $deep;
		640	$res .= " (\@res, \@_)\n"
		641	. "}";
		642	} else {
		643	$res .= " $expand";
		644	}
521	} else {	645	} else {
522	$res .= " map+($also\$_->inv)," if defined $also;
523	$res .= $all ? " grep { " : " first {";
524	$res .= condition;
525	$res .= "}";
526		646
527	$also = /\G\s*also\b/gc ? '$_, ' : '';	647	if (/\Gof\s+(self\|object\|source\|originator)\b/gc) {
528	last unless /\G\s*in\b/gc;	648	$also \|\| $deep
		649	and die "neither 'also' nor 'deep' can be used with 'of'\n";
		650
		651	if ($1 eq "self") {
		652	return "$res \$self // ()";
		653	} elsif ($1 eq "object") {
		654	return "$res \$object";
		655	} elsif ($1 eq "source") {
		656	return "$res \$source // ()";
		657	} elsif ($1 eq "originator") {
		658	return "$res \$originator // \$source // ()";
		659	}
		660	} else {
		661	return "$res $defctx";
		662	}
529	}	663	}
530	}	664	}
531
532	"$res \$object"
533	}	665	}
534
535	}	666	}
536		667
537	sub parse($;$) {	668	sub parse($$) { # wantarray, matchexpr
538	local $_ = shift;	669	my $res;
539	local $all = shift;
540		670
		671	local $_ = $_[1];
		672
		673	eval {
541	my $res = cf::match::parser::match;	674	$res = cf::match::parser::match $_[0], "\$object";
		675
		676	/\G$/gc
		677	or die "unexpected trailing characters after match\n";
		678	};
542		679
543	if ($@) {	680	if ($@) {
544	my $ctx = 20;	681	my $ctx = 20;
545	my $str = substr $_, (List::Util::max 0, (pos) - $ctx), $ctx * 2;	682	my $str = substr $_, (List::Util::max 0, (pos) - $ctx), $ctx * 2;
546	substr $str, (List::Util::min $ctx, pos), 0, "<-- HERE -->";	683	substr $str, (List::Util::min $ctx, pos), 0, "<-- HERE -->";
…		…
550	}	687	}
551		688
552	$res	689	$res
553	}	690	}
554		691
		692	if (0) {#d#
		693	die parse 1, 'stats.pow';
		694	exit 0;
		695	}
		696
555	our %CACHE;	697	our %CACHE;
556		698
557	sub match($$$;$$) {	699	sub compile($$) {
558	my ($self, $match, $object, $source, $originator) = @_;	700	my ($wantarray, $match) = @_;
559	my $all = wantarray+0;	701	my $expr = parse $wantarray, $match;
560		702	warn "MATCH DEBUG $match,$wantarray => $expr\n";#d#
561	$originator \|\|= $source;	703	$expr = eval "
562		704	package cf::match::exec;
563	&{	705	sub {
564	$CACHE{"$all$match"} \|\|= do {	706	my (\$object, \$self, \$source, \$originator) = \@_;
565	my $expr = parse $match, $all;
566	warn "$match,$all => $expr\n";#d#
567	$expr = eval "package cf::match::exec; sub { $expr }";
568	die if $@;
569	$expr	707	$expr
570	}	708	}
		709	";
		710	die if $@;
		711
		712	$expr
		713	}
		714
		715	=item cf::match::match $match, $object[, $self[, $source[, $originator]]]
		716
		717	Compiles (and caches) the C<$match> expression and matches it against
		718	the C<$object>. C<$self> should be the object initiating the match (or
		719	C<undef>), C<$source> should be the actor/source and C<$originator> the
		720	object that initiated the action (such as the player). C<$originator>
		721	defaults to C<$source> when not given.
		722
		723	In list context it finds and returns all matching objects, in scalar
		724	context only a true or false value.
		725
		726	=cut
		727
		728	sub match($$;$$$) {
		729	my $match = shift;
		730	my $wantarray = wantarray+0;
		731
		732	&{
		733	$CACHE{"$wantarray$match"} \|\|= compile $wantarray, $match
571	}	734	}
572	}	735	}
573		736
574	#match undef, "any", undef;	737	our $CACHE_CLEARER = AE::timer 3600, 3600, sub {
575	#exit 0;	738	%CACHE = ();
		739	};
		740
		741	#d# $::schmorp=cf::player::find "schmorp"&
		742	#d# cf::match::match '', $::schmorp->ob
		743
		744
		745	=back
		746
		747	=head1 AUTHOR
		748
		749	Marc Lehmann <schmorp@schmorp.de>
		750	http://home.schmorp.de/
		751
		752	=cut
576		753
577	1;	754	1;
578		755

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Comparing deliantra/server/lib/cf/match.pm (file contents): Revision 1.9 by root, Sun Oct 11 00:24:35 2009 UTC vs. Revision 1.22 by root, Sat Oct 24 11:45:40 2009 UTC

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Comparing deliantra/server/lib/cf/match.pm (file contents):
Revision 1.9 by root, Sun Oct 11 00:24:35 2009 UTC vs.
Revision 1.22 by root, Sat Oct 24 11:45:40 2009 UTC