src/gmxlib/selection/scanner_internal.h

   1 /*
   2  *
   3  *                This source code is part of
   4  *
   5  *                 G   R   O   M   A   C   S
   6  *
   7  *          GROningen MAchine for Chemical Simulations
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   9  * Written by David van der Spoel, Erik Lindahl, Berk Hess, and others.
  10  * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
  11  * Copyright (c) 2001-2009, The GROMACS development team,
  12  * check out http://www.gromacs.org for more information.
  13
  14  * This program is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU General Public License
  16  * as published by the Free Software Foundation; either version 2
  17  * of the License, or (at your option) any later version.
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  20  * scientific software is very special. Version control is crucial -
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  27  * the papers on the package - you can find them in the top README file.
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  30  */
  31 /*! \internal \file
  32  * \brief Internal header file used by the selection tokenizer.
  33  */
  34 #ifndef SELECTION_SCANNER_INTERNAL_H
  35 #define SELECTION_SCANNER_INTERNAL_H
  36
  37 #include "parser.h"
  38
  39 /** The scanning function generated by Flex. */
  40 #define YY_DECL int _gmx_sel_yylex(YYSTYPE *yylval, yyscan_t yyscanner)
  41 YY_DECL;
  42
  43 /* These need to be defined before including scanner_flex.h, because it
  44  * uses YY_EXTRA_TYPE. But we also need to include it before defining
  45  * gmx_sel_lexer_t; hence the forward declaration. */
  46 struct gmx_sel_lexer_t;
  47 #define YY_EXTRA_TYPE struct gmx_sel_lexer_t *
  48
  49 /* We cannot include scanner_flex.h from the scanner itself, because it
  50  * seems to break everything. */
  51 /* And we need to define YY_NO_UNISTD_H here as well, otherwise unistd.h
  52  * gets included in other files than scanner.c... */
  53 #ifndef FLEX_SCANNER
  54 #define YY_NO_UNISTD_H
  55 #include "scanner_flex.h"
  56 #endif
  57
  58 /*! \brief
  59  * Internal data structure for the selection tokenizer state.
  60  */
  61 typedef struct gmx_sel_lexer_t
  62 {
  63     struct gmx_ana_selcollection_t  *sc;
  64     struct gmx_ana_indexgrps_t      *grps;
  65     int                              nexpsel;
  66
  67     bool                             bInteractive;
  68     char                            *inputstr;
  69     int                              nalloc_input;
  70
  71     char                            *pselstr;
  72     int                              pslen;
  73     int                              nalloc_psel;
  74
  75     struct gmx_ana_selmethod_t     **mstack;
  76     int                              msp;
  77     int                              mstack_alloc;
  78
  79     int                              neom;
  80     struct gmx_ana_selparam_t       *nextparam;
  81     bool                             bBoolNo;
  82     struct gmx_ana_selmethod_t      *nextmethod;
  83     int                              prev_pos_kw;
  84
  85     bool                             bMatchOf;
  86     bool                             bMatchBool;
  87     bool                             bCmdStart;
  88
  89     bool                             bBuffer;
  90     YY_BUFFER_STATE                  buffer;
  91 } gmx_sel_lexer_t;
  92
  93 /* Because Flex defines yylval, yytext, and yyleng as macros,
  94  * and this file is included from scanner.l,
  95  * we cannot have them here as parameter names... */
  96 /** Internal function for cases where several tokens need to be returned. */
  97 int
  98 _gmx_sel_lexer_process_pending(YYSTYPE *, gmx_sel_lexer_t *state);
  99 /** Internal function that processes identifier tokens. */
 100 int
 101 _gmx_sel_lexer_process_identifier(YYSTYPE *, char *, size_t,
 102                                   gmx_sel_lexer_t *state);
 103 /** Internal function to add a token to the pretty-printed selection text. */
 104 void
 105 _gmx_sel_lexer_add_token(const char *str, int len, gmx_sel_lexer_t *state);
 106
 107 #endif