mirror of
git://xwords.git.sourceforge.net/gitroot/xwords/xwords
synced 2025-01-03 23:04:08 +01:00
b8f359c3e5
Add a basic regular expression engine to the dictiter, and to the UI add
the ability to filter for "starts with", "contains" and "ends with",
which translate into ANDed RE_*, _*RE_* and _*RE, respectively (with
_ standing for blank/wildcard). The engine's tightly integrated with the
next/prevWord() functions for greatest possible speed, but unless
there's no pattern does slow things down a bit (especially when "ENDS
WITH" is used.) The full engine is not exposed (users can't provide raw
REs), and while the parser will accept nesting (e.g. ([AB]_*[CD]){2,5}
to mean words from 2-5 tiles long starting with A or B and ending with C
or D) the engine can't handle it. Which is why filtering for word length
is handled separately from REs (but also tightly integrated.)
Users can enter strings that don't map to tiles. They now get an
error. It made sense for the error alert to have a "Show tiles"
button, so there's now a dialog listing all the tiles in a wordlist,
something the browser has needed all along.
72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/* -*-mode: C; fill-column: 78; c-basic-offset: 4; -*- */
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/*
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* Copyright 1997 - 2002 by Eric House (xwords@eehouse.org). All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _ENGINE_H_
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#define _ENGINE_H_
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#include "comtypes.h"
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#include "dictnry.h"
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#ifdef CPLUS
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extern "C" {
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#endif
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#ifdef XWFEATURE_SEARCHLIMIT
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typedef struct BdHintLimits {
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XP_U16 left;
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XP_U16 top;
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XP_U16 right;
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XP_U16 bottom;
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} BdHintLimits;
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#endif
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XP_U16 engine_getScoreCache( EngineCtxt* engine, XP_U16 row );
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EngineCtxt* engine_make( MPFORMAL XW_UtilCtxt* util );
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void engine_writeToStream( EngineCtxt* ctxt, XWStreamCtxt* stream );
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EngineCtxt* engine_makeFromStream( MPFORMAL XWStreamCtxt* stream,
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XW_UtilCtxt* util );
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void engine_init( EngineCtxt* ctxt );
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void engine_reset( EngineCtxt* ctxt );
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void engine_destroy( EngineCtxt* ctxt );
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XP_Bool engine_findMove( EngineCtxt* ctxt, XWEnv xwe, const ModelCtxt* model, XP_S16 turn,
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/* includePending: include pending tiles as part of words */
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XP_Bool includePending,
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/* skipCallback: skip the callback that lets client cancel */
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XP_Bool skipCallback,
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const Tile* tiles, XP_U16 nTiles, XP_Bool usePrev,
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#ifdef XWFEATURE_BONUSALL
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XP_U16 allTilesBonus,
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#endif
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#ifdef XWFEATURE_SEARCHLIMIT
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const BdHintLimits* boardLimits,
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XP_Bool useTileLimits,
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#endif
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XP_U16 robotIQ, XP_Bool* canMove,
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MoveInfo* result, XP_U16* score );
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XP_Bool engine_check( const DictionaryCtxt* dict, Tile* buf, XP_U16 buflen );
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#ifdef CPLUS
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}
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#endif
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#endif /* _ENGINE_H_ */
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