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

Comparing deliantra/server/lib/cf/match.pm (file contents):
Revision 1.11 by root, Sun Oct 11 18:18:03 2009 UTC vs.
Revision 1.24 by root, Tue Nov 3 23:44:21 2009 UTC

…		…
		1	#
		2	# This file is part of Deliantra, the Roguelike Realtime MMORPG.
		3	#
		4	# Copyright (©) 2009 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
		5	#
		6	# Deliantra is free software: you can redistribute it and/or modify it under
		7	# the terms of the Affero GNU General Public License as published by the
		8	# Free Software Foundation, either version 3 of the License, or (at your
		9	# option) any later version.
		10	#
		11	# This program is distributed in the hope that it will be useful,
		12	# but WITHOUT ANY WARRANTY; without even the implied warranty of
		13	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		14	# GNU General Public License for more details.
		15	#
		16	# You should have received a copy of the Affero GNU General Public License
		17	# and the GNU General Public License along with this program. If not, see
		18	# <http://www.gnu.org/licenses/>.
		19	#
		20	# The authors can be reached via e-mail to <support@deliantra.net>
		21	#
		22
1	=head1 NAME	23	=head1 NAME
2		24
3	cf::match - object matching language	25	cf::match - object matching language
4		26
5	=head1 DESCRIPTION	27	=head1 DESCRIPTION
25		47
26	Find all potions with spell objects inside them in someones inventory:	48	Find all potions with spell objects inside them in someones inventory:
27		49
28	type=SPELL in type=POTION in inv	50	type=SPELL in type=POTION in inv
29		51
30	Find all potions inside someones inventory, or inside applied containers:	52	Find all scrolls inside someones inventory, or inside applied scroll
		53	containers:
31		54
32	type=POTION also in type=CONTAINER and applied in inv	55	type=SCROLL also in applied type=CONTAINER race="scroll" in inv
		56
		57	Find all unpaid items, anywhere, even deeply nested inside other items, in
		58	the originator:
		59
		60	unpaid also deep in inv of originator
33		61
34	=head1 MATCH EXPRESSIONS	62	=head1 MATCH EXPRESSIONS
35		63
36	=head2 STRUCTURE	64	=head2 STRUCTURE
37		65
38	The two main structures are the C<match>, which selects objects matching	66	The two main structures are the C<match>, which selects objects matching
39	various criteria, and the C<condition, which determines if an object	67	various criteria, and the C<condition, which determines if an object
40	matches some desired properties:	68	matches some desired properties:
41		69
42	condition	70	condition
43	condition in set	71	condition in set-modifier
		72	condition of root-object
44		73
45	A C<cond> receives a set of "context objects" that it is applied to. This	74	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,	75	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.	76	object dropped on it, for pedestals, the object on top of it and so on.
48		77
49	This set of context objects can be modified in various ways, for example	78	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	79	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:	80	same mapspace, and so on, by using the C<in> operator:
52		81
53	condition in inv	82	condition in inv
		83	condition in map
		84
		85	Also, besides the default root object where all this begins, you can start
		86	elsewhere, for example in the I<originator> (usually the player):
		87
54	condition in inv in originator	88	condition in inv of originator
55		89
56	Once the set of context objects has been established, each object is	90	Once the final set of context objects has been established, each object
57	matched against the C<cond> expression. Sometimes the server is only	91	is matched against the C<condition>.
58	interested in knowing whether I<anything> matches, and sometimes the	92
59	server is interested in I<all> objects that match.	93	It is possible to chain modifiers from right-to-left, so this example
		94	would start with the originator, take it's inventory, find all inventory
		95	items which are potions, looks into their inventory, and then finds all
		96	spells.
		97
		98	type=SPELL in type=POTION in inv of originator
		99
		100	Sometimes the server is only interested in knowing whether I<anything>
		101	matches, and sometimes the server is interested in I<all> objects that
		102	match.
60		103
61	=head2 OPERATORS	104	=head2 OPERATORS
62		105
63	=over 4	106	=over 4
64		107
65	=item and, or, not, ()	108	=item and, or, not, ()
66		109
67	Conditions can be combined with C<and> or C<or> to build larger	110	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	111	expressions. C<not> negates the condition, and parentheses can be used to
69	group conditions.	112	override operator precedence and execute submatches.
		113
		114	Not that C<not> only negates a condition and not the whole match
		115	expressions, thus
		116
		117	not applied in inv
		118
		119	is true if there is I<any> non-applied object in the inventory. To negate
		120	a whole match, you have to use a sub-match: To check whether there is
		121	I<no> applied object in someones inventory, write this:
		122
		123	not (applied in inv)
70		124
71	Example: match applied weapons.	125	Example: match applied weapons.
72		126
73	type=WEAPON and applied	127	applied type=WEAPON
74		128
75	Example: match horns or rods.	129	Example: match horns or rods.
76		130
77	type=HORN or type=ROD	131	type=HORN or type=ROD
		132
		133	Example: see if the originator is a player.
		134
		135	type=PLAYER of originator
78		136
79	=item in ...	137	=item in ...
80		138
81	The in operator takes the context set and modifies it in various ways. As	139	The in operator takes the context set and modifies it in various ways. As
82	a less technical description, think of the C<in> as being a I<look into>	140	a less technical description, think of the C<in> as being a I<look into>
…		…
84	the match, the C<in> operator lets you look at other sets of objects, most	142	the match, the C<in> operator lets you look at other sets of objects, most
85	often the inventory.	143	often the inventory.
86		144
87	=over 4	145	=over 4
88		146
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	147	=item in inv
121		148
122	Replaces all objects by their inventory.	149	Replaces all objects by their inventory.
123		150
124	Example: find all spell objects inside the object to be matched.	151	Example: find all spell objects inside the object to be matched.
…		…
127		154
128	=item in env	155	=item in env
129		156
130	Replaces all objects by their containing object, if they have one.	157	Replaces all objects by their containing object, if they have one.
131		158
		159	=item in arch
		160
		161	Replaces all objects by their archetypes.
		162
132	=item in map	163	=item in map
133		164
134	Replaces all objects by the objects that are on the same mapspace as them.	165	Replaces all objects by the objects that are on the same mapspace as them.
135		166
		167	=item in head
		168
		169	Replaces all objects by their head objects.
		170
136	=item in <cond>	171	=item in <condition>
137		172
138	Finds all context objects matching the condition, and then puts their	173	Finds all context objects matching the condition, and then puts their
139	inventories into the context set.	174	inventories into the context set.
140		175
141	Note that C<in inv> is simply a special case of an C<< in <cond> >> that	176	Note that C<in inv> is simply a special case of an C<< in <condition> >> that
142	matches any object.	177	matches any object.
143		178
144	Example: find all spells inside potions inside the inventory of the context	179	Example: find all spells inside potions inside the inventory of the context
145	object(s).	180	object(s).
146		181
…		…
153		188
154	Example: check if the context object I<is> a spell, or I<contains> a spell.	189	Example: check if the context object I<is> a spell, or I<contains> a spell.
155		190
156	type=SPELL also in inv	191	type=SPELL also in inv
157		192
158	=item repeatedly in ...	193	=item also deep in ...
159		194
160	Repeats the operation as many times as possible. This can be used to	195	Repeats the operation as many times as possible. This can be used to
161	recursively look into objects.	196	recursively look into objects.
162		197
163	=item also repeatedly in ...	198	So for example, C<also deep in inv> means to take the inventory of all
		199	objects, taking their inventories, and so on, and adding all these objects
		200	to the context set.
164		201
165	C<also> and C<repeatedly> can be combined.	202	Similarly, C<also deep in env> means to take the environment object, their
		203	environemnt object and so on.
166		204
167	Example: check if there are any unpaid items in an inventory,	205	Example: check if there are any unpaid items in an inventory,
168	or in the inventories of the inventory objects, and so on.	206	or in the inventories of the inventory objects, and so on.
169		207
170	unpaid also repeatedly in inv	208	unpaid also deep in inv
171		209
172	Example: check if a object is inside a player.	210	Example: check if a object is inside a player.
173		211
174	type=PLAYER also repeatedly in env	212	type=PLAYER also deep in env
175		213
176	=back	214	=back
		215
		216	=item of ...
		217
		218	By default, all matches are applied to the "obviously appropriate" object,
		219	such as the item dropped on a button or moving over a detector. This can
		220	be changed to a number of other objects - not all of them are available
		221	for each match (when not available, the match will simply fail).
		222
		223	An C<of> term ends a match, nothing is allowed to follow.
		224
		225	=over 4
		226
		227	=item of object
		228
		229	Starts with the default object - this is the object passed to the match to
		230	match against by default. Matches have an explicit C<of object> appended,
		231	but submatches start at the current object, and in this case C<of object>
		232	can be used to start at the original object once more.
		233
		234	=item of source
		235
		236	Starts with the I<source> object - this object is sometimes passed to
		237	matches and represents the object that is the source of the action, such
		238	as a rod or a potion when it is applied. Often, the I<source> is the same
		239	as the I<originator>.
		240
		241	=item of originator
		242
		243	Starts with the I<originator> - one step farther removed than the
		244	I<source>, the I<originator> is sometimes passed to matches and represents
		245	the original initiator of an action, most commonly a player or monster.
		246
		247	This object is often identical to the I<source> (e.g. when a player casts
		248	a spell, the player is both source and originator).
		249
		250	=item of self
		251
		252	Starts with the object initiating/asking for the match - this is basically
		253	always the object that the match expression is attached to.
177		254
178	=back	255	=back
179		256
180	=head2 EXPRESSIONS	257	=head2 EXPRESSIONS
181		258
…		…
250	=item any	327	=item any
251		328
252	This simply evaluates to true, and simply makes matching I<any> object a	329	This simply evaluates to true, and simply makes matching I<any> object a
253	bit easier to read.	330	bit easier to read.
254		331
		332	=item none
		333
		334	This simply evaluates to false, and simply makes matching I<never> a bit
		335	easier to read.
		336
255	=item has(condition)	337	=item has(condition)
256		338
257	True iff the object has a matching inventory object.	339	True iff the object has a matching inventory object.
258		340
259	=item count(match)	341	=item count(match)
260		342
261	Number of matching objects - the context object for the C<match> is the	343	Number of matching objects - the context object for the C<match> is the
262	currently tested object - you can override this with an C<in object> for	344	currently tested object - you can override this with an C<in object> for
263	example.	345	example.
264		346
265	=item match(match)
266
267	An independent match - semantics like C<count>, except it only matters
268	whether the match finds any object (which is faster).
269
270	=item dump	347	=item dump()
271		348
272	Dumps the object to the server log when executed, and evaluates to true.	349	Dumps the object to the server log when executed, and evaluates to true.
273		350
274	Note that logical operations are short-circuiting, so this only dumps	351	Note that logical operations are short-circuiting, so this only dumps
275	potions:	352	potions:
276		353
277	type=POTION and dump	354	type=POTION and dump()
278		355
279	=back	356	=back
280		357
281	=head2 GRAMMAR	358	=head2 GRAMMAR
282		359
…		…
284	module. It is meant to be easily readable by humans, not to implement it	361	module. It is meant to be easily readable by humans, not to implement it
285	exactly as-is.	362	exactly as-is.
286		363
287	# object matching and selecting	364	# object matching and selecting
288		365
289	match = set	366	match = chain
		367	\| chain 'of' root
		368	root = 'object' \| 'self' \| 'source' \| 'originator'
		369	chain = condition
290	\| match also rep 'in' set	370	\| chain also deep 'in' modifier
291	also = nothing \| 'also'	371	also = nothing \| 'also'
292	rep = nothing \| 'rep' \| 'repeatedly'	372	deep = nothing \| 'deep'
		373	modifier ='inv' \| 'env' \| 'arch' \| 'map' \| 'head'
293		374
294	set = 'inv' \| 'env' \| 'map'	375	nothing =
295	\| 'object' \| 'source' \| 'originator' \| 'self'
296
297	empty =
298		376
299	# boolean matching condition	377	# boolean matching condition
300		378
301	condition = factor	379	condition = factor
302	\| factor 'and'? cond	380	\| factor 'and'? condition
303	\| factor 'or' cond	381	\| factor 'or' condition
304		382
305	factor = 'not' factor	383	factor = 'not' factor
306	\| '(' cond ')'	384	\| '(' match ')'
307	\| expr	385	\| expr
308	\| expr operator constant	386	\| expr operator constant
309		387
310	operator = '=' \| '==' \| '!=' \| '<' \| '<=' \| '>' \| '>='	388	operator = '=' \| '==' \| '!=' \| '<' \| '<=' \| '>' \| '>='
311		389
312	expr = flag	390	expr = flag
313	\| sattr	391	\| sattr
314	\| aattr '[' <constant> ']'	392	\| aattr '[' <constant> ']'
		393	\| 'stat.' statattr
315	\| special	394	\| special
316	\| func '(' args ')'	395	\| func '(' args ')'
317	\| '{' perl code block '}'	396	\| '{' perl code block '}'
318		397
319	func = <any function name>	398	func = <any function name>
320	sattr = <any scalar object attribute>	399	sattr = <any scalar object attribute>
321	aattr = <any array object attribute>	400	aattr = <any array object attribute>
322	flag = <any object flag>	401	flag = <any object flag>
		402	statattr = <any stat attribute: exp, food, str, dex, hp, maxhp...>
323	special = <any ()-less "function">	403	special = <any ()-less "function">
324		404
325	constant = <number> \| '"' <string> '"' \| <uppercase cf::XXX name>	405	constant = <number> \| '"' <string> '"' \| <uppercase cf::XXX name>
326	args = <depends on function>	406	args = <depends on function>
327		407
328	TODO: repeatedly, env, contains, possbly matches	408	TODO: contains, matches, query_name, selling_price, buying_price?
329		409
330	=cut	410	=cut
331		411
332	=head2 PERL FUNCTIONS	412	=head2 PERL FUNCTIONS
333		413
…		…
338	package cf::match;	418	package cf::match;
339		419
340	use common::sense;	420	use common::sense;
341		421
342	use List::Util ();	422	use List::Util ();
343
344	# parser state
345	# $_ # string to be parsed
346	our $all; # find all, or just the first matching object
347		423
348	{	424	{
349	package cf::match::exec;	425	package cf::match::exec;
350		426
351	use List::Util qw(first);	427	use List::Util qw(first);
352
353	sub env_chain {
354	my @res;
355	push @res, $_
356	while $_ = $_->env;
357	@res
358	}
359		428
360	package cf::match::parser;	429	package cf::match::parser;
361		430
362	use common::sense;	431	use common::sense;
363		432
364	sub ws {	433	sub ws {
365	/\G\s+/gc;	434	/\G\s+/gc;
366	}	435	}
367		436
		437	sub condition ();
		438	sub match ($$);
		439
368	our %func = (	440	our %func = (
369	has => sub {	441	has => sub {
370	'first { ' . &condition . ' } $_->inv'	442	'first { ' . condition . ' } $_->inv'
371	},	443	},
372	count => sub {	444	count => sub {
373	local $all = 1;
374	'(scalar ' . &match ('$_') . ')'	445	'(scalar ' . (match 1, '$_') . ')'
375	},
376	match => sub {
377	local $all = 0;
378	'(scalar ' . &match ('$_') . ')'
379	},
380	);
381
382	our %special = (
383	any => sub {
384	1
385	},	446	},
386	dump => sub {	447	dump => sub {
387	'do {	448	'do {
388	warn "cf::match::match dump:\n"	449	warn "cf::match::match dump:\n"
389	. "self: " . eval { $self->name } . "\n"	450	. "self: " . eval { $self->name } . "\n"
…		…
391	1	452	1
392	}';	453	}';
393	},	454	},
394	);	455	);
395		456
		457	our %special = (
		458	any => sub {
		459	1
		460	},
		461	none => sub {
		462	0
		463	},
		464	);
		465
396	sub constant {	466	sub constant {
397	ws;	467	ws;
398		468
399	return $1 if /\G([\-\+0-9\.]+)/gc;	469	return $1 if /\G([\-\+0-9\.]+)/gc;
400	return "cf::$1" if /\G([A-Z0-9_]+)/gc;	470	return "cf::$1" if /\G([A-Z0-9_]+)/gc;
…		…
406	}	476	}
407		477
408	our $flag = $cf::REFLECT{object}{flags};	478	our $flag = $cf::REFLECT{object}{flags};
409	our $sattr = $cf::REFLECT{object}{scalars};	479	our $sattr = $cf::REFLECT{object}{scalars};
410	our $aattr = $cf::REFLECT{object}{arrays};	480	our $aattr = $cf::REFLECT{object}{arrays};
		481	our $lattr = $cf::REFLECT{living}{scalars};
411		482
412	sub expr {	483	sub expr {
413	# ws done by factor	484	# ws done by factor
414	my $res;	485	my $res;
415		486
…		…
418		489
419	my $expr = $1;	490	my $expr = $1;
420		491
421	$res .= $expr =~ /\{([^;]+)\}/ ? $1 : "do $expr";	492	$res .= $expr =~ /\{([^;]+)\}/ ? $1 : "do $expr";
422		493
		494	} elsif (/\Gstats\.([A-Za-z0-9_]+)/gc) {
		495
		496	if (exists $lattr->{$1}) {
		497	$res .= "\$_->stats->$1";
		498	} elsif (exists $lattr->{"\u$1"}) {
		499	$res .= "\$_->stats->\u$1";
		500	} else {
		501	die "living statistic name expected (str, pow, hp, sp...)\n";
		502	}
		503
423	} elsif (/\G([A-Za-z0-9_]+)/gc) {	504	} elsif (/\G([A-Za-z0-9_]+)/gc) {
424		505
425	if (my $func = $func{$1}) {	506	if (my $func = $func{$1}) {
426	/\G\s*\(/gc	507	/\G\s*\(/gc
427	or die "'(' expected after function name\n";	508	or die "'(' expected after function name\n";
…		…
455	} else {	536	} else {
456	$res .= constant;	537	$res .= constant;
457	}	538	}
458		539
459	} else {	540	} else {
		541	Carp::cluck;#d#
460	die "expr expected\n";	542	die "expr expected\n";
461	}	543	}
462		544
463	$res	545	$res
464	}	546	}
…		…
481	$res .= "!";	563	$res .= "!";
482	}	564	}
483		565
484	if (/\G\(/gc) {	566	if (/\G\(/gc) {
485	# ()	567	# ()
486	$res .= &condition;	568
487	ws;	569	$res .= '(' . (match 0, '$_') . ')';
		570
488	/\G\)/gc or die "')' expected\n";	571	/\G\s*\)/gc or die "closing ')' expected\n";
489		572
490	} else {	573	} else {
491	my $expr = expr;	574	my $expr = expr;
492		575
493	$res .= $expr;	576	$res .= $expr;
…		…
504	}	587	}
505		588
506	"($res)"	589	"($res)"
507	}	590	}
508		591
509	sub condition {	592	sub condition () {
510	my $res = factor;	593	my $res = factor;
511		594
512	while () {	595	while () {
513	ws;	596	ws;
		597
		598	# first check some stop-symbols, so we don't have to backtrack
514	if (/\G(?=also\b\|in\b\|\)\|$)/gc) {	599	if (/\G(?=also\b\|deep\b\|in\b\|of\b\|\)\|\z)/gc) {
515	# early stop => faster and requires no backtracking	600	pos = pos; # argh. the misop hits again. again. again. again. you die.
516	last;	601	last;
		602
517	} elsif (/\Gor\b/gc) {	603	} elsif (/\Gor\b/gc) {
518	$res .= " \|\| ";	604	$res .= " \|\| ";
		605
519	} else {	606	} else {
520	/\Gand\b/gc;	607	/\Gand\b/gc;
521	$res .= " && ";	608	$res .= " && ";
522	}	609	}
523	$res .= factor;	610	$res .= factor;
524	}	611	}
525		612
526	$res	613	$res
527	}	614	}
528		615
529	sub match {	616	sub match ($$) {
530	my $default = shift;	617	my ($wantarray, $defctx) = @_;
531		618
532	my $res;	619	my $res = condition;
533		620
534	my $also; # undef means first iteration	621	# if nothing follows, we have a simple condition, so
		622	# optimise a comon case.
		623	if ($defctx eq '$_' and /\G\s*(?=\)\|$)/gc) {
		624	return $wantarray
		625	? "$res ? \$_ : ()"
		626	: $res;
		627	}
		628
		629	$res = ($wantarray ? " grep { " : " first { ") . $res . "}";
		630
535	while () {	631	while () {
536	if (/\G\s*(inv\|env\|map\|object\|subject\|originator)\b/gc) {	632	ws;
		633
		634	my $also = /\Galso\s+/gc + 0;
		635	my $deep = /\Gdeep\s+/gc + 0;
		636
		637	if (/\Gin\s+/gc) {
		638	my $expand;
		639
		640	if (/\G(inv\|env\|map\|arch\|head)\b/gc) {
537	if ($1 eq "inv") {	641	if ($1 eq "inv") {
538	$res .= " map+(${also}\$_->inv),";	642	$expand = "map \$_->inv,";
539	} elsif ($1 eq "env") {	643	} elsif ($1 eq "env") {
540	$res .= " map+(${also}env_chain), "; # TODO	644	$expand = "map \$_->env // (),";
		645	} elsif ($1 eq "head") {
		646	$expand = "map \$_->head,";
		647	$deep = 0; # infinite loop otherwise
		648	} elsif ($1 eq "arch") {
		649	$expand = "map \$_->arch,";
		650	$deep = 0; # infinite loop otherwise
541	} elsif ($1 eq "map") {	651	} elsif ($1 eq "map") {
542	$res .= " map+(${also}\$_->map->at (\$_->x, \$_->y)),";	652	$expand = "map \$_->map->at (\$_->x, \$_->y),";
543	} elsif ($1 eq "self") {	653	$deep = 0; # infinite loop otherwise
544	return "$res \$self";	654	}
545	} elsif ($1 eq "object") {	655	} else {
546	return "$res \$object";	656	$expand = "map \$_->inv, grep { " . condition . " }";
547	} elsif ($1 eq "source") {
548	return "$res \$source";
549	} elsif ($1 eq "originator") {
550	return "$res \$originator";
551	}	657	}
552	last unless /\G\s*in\b/gc;	658
		659	if ($also \|\| $deep) {
		660	$res .= " do {\n"
		661	. " my \@res;\n";
		662	$res .= " while (\@_) {\n" if $deep;
		663	$res .= " push \@res, \@_;\n" if $also;
		664	$res .= " \@_ = $expand \@_;\n";
		665	$res .= " }\n" if $deep;
		666	$res .= " (\@res, \@_)\n"
		667	. "}";
		668	} else {
		669	$res .= " $expand";
		670	}
553	} else {	671	} else {
554	$res .= " map+($also\$_->inv)," if defined $also;
555	$res .= $all ? " grep { " : " first {";
556	$res .= condition;
557	$res .= "}";
558		672
559	$also = /\G\s*also\b/gc ? '$_, ' : '';	673	if (/\Gof\s+(self\|object\|source\|originator)\b/gc) {
560	last unless /\G\s*in\b/gc;	674	$also \|\| $deep
		675	and die "neither 'also' nor 'deep' can be used with 'of'\n";
		676
		677	if ($1 eq "self") {
		678	return "$res \$self // ()";
		679	} elsif ($1 eq "object") {
		680	return "$res \$object";
		681	} elsif ($1 eq "source") {
		682	return "$res \$source // ()";
		683	} elsif ($1 eq "originator") {
		684	return "$res \$originator // \$source // ()";
		685	}
		686	} else {
		687	return "$res $defctx";
		688	}
561	}	689	}
562	}	690	}
563
564	"$res $default"
565	}	691	}
566
567	}	692	}
568		693
569	sub parse($;$) {	694	sub parse($$) { # wantarray, matchexpr
570	local $_ = shift;	695	my $res;
571	local $all = shift;
572		696
		697	local $_ = $_[1];
		698
		699	eval {
573	my $res = cf::match::parser::match "\$object";	700	$res = cf::match::parser::match $_[0], "\$object";
		701
		702	/\G$/gc
		703	or die "unexpected trailing characters after match\n";
		704	};
574		705
575	if ($@) {	706	if ($@) {
576	my $ctx = 20;	707	my $ctx = 20;
577	my $str = substr $_, (List::Util::max 0, (pos) - $ctx), $ctx * 2;	708	my $str = substr $_, (List::Util::max 0, (pos) - $ctx), $ctx * 2;
578	substr $str, (List::Util::min $ctx, pos), 0, "<-- HERE -->";	709	substr $str, (List::Util::min $ctx, pos), 0, "<-- HERE -->";
…		…
582	}	713	}
583		714
584	$res	715	$res
585	}	716	}
586		717
587	if (0) {	718	if (0) {#d#
588	die parse 'match(any in object)', 1;	719	die parse 1, 'stats.pow';
589	exit 0;	720	exit 0;
		721	}
		722
		723	our %CACHE;
		724
		725	sub compile($$) {
		726	my ($wantarray, $match) = @_;
		727	my $expr = parse $wantarray, $match;
		728	warn "MATCH DEBUG $match,$wantarray => $expr\n";#d#
		729	$expr = eval "
		730	package cf::match::exec;
		731	sub {
		732	my (\$object, \$self, \$source, \$originator) = \@_;
		733	$expr
		734	}
		735	";
		736	die if $@;
		737
		738	$expr
590	}	739	}
591		740
592	=item cf::match::match $match, $object[, $self[, $source[, $originator]]]	741	=item cf::match::match $match, $object[, $self[, $source[, $originator]]]
593		742
594	Compiles (and caches) the C<$match> expression and matches it against	743	Compiles (and caches) the C<$match> expression and matches it against
…		…
600	In list context it finds and returns all matching objects, in scalar	749	In list context it finds and returns all matching objects, in scalar
601	context only a true or false value.	750	context only a true or false value.
602		751
603	=cut	752	=cut
604		753
605	our %CACHE;
606
607	sub compile($$) {
608	my ($match, $all) = @_;
609	my $expr = parse $match, $all;
610	warn "$match,$all => $expr\n";#d#
611	$expr = eval "
612	package cf::match::exec;
613	sub {
614	my (\$object, \$self, \$source, \$originator) = \@_;
615	\$originator \|\|= \$source;
616	$expr
617	}
618	";
619	die if $@;
620
621	$expr
622	}
623
624	sub match($$;$$$) {	754	sub match($$;$$$) {
625	my $match = shift;	755	my $match = shift;
626	my $all = wantarray+0;	756	my $wantarray = wantarray+0;
627		757
628	&{	758	&{
629	$CACHE{"$all$match"} \|\|= compile $match, $all	759	$CACHE{"$wantarray$match"} \|\|= compile $wantarray, $match
630	}	760	}
631	}	761	}
632		762
		763	our $CACHE_CLEARER = AE::timer 3600, 3600, sub {
		764	%CACHE = ();
		765	};
		766
633	#d# $::schmorp=cf::player::find "schmorp"&	767	#d# $::schmorp=cf::player::find "schmorp"&
634	#d# cf::match::match '', $::schmorp->ob	768	#d# cf::match::match '', $::schmorp->ob
635		769
636		770
637	=back	771	=back

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Comparing deliantra/server/lib/cf/match.pm (file contents): Revision 1.11 by root, Sun Oct 11 18:18:03 2009 UTC vs. Revision 1.24 by root, Tue Nov 3 23:44:21 2009 UTC

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Comparing deliantra/server/lib/cf/match.pm (file contents):
Revision 1.11 by root, Sun Oct 11 18:18:03 2009 UTC vs.
Revision 1.24 by root, Tue Nov 3 23:44:21 2009 UTC