src/gmxlib/selection/scanner.h

   1 /*
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   3  *                This source code is part of
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   7  *          GROningen MAchine for Chemical Simulations
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  12  * check out http://www.gromacs.org for more information.
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  14  * This program is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU General Public License
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  31 /*! \internal \file
  32  * \brief
  33  * Parser/scanner interaction functions.
  34  *
  35  * This is an implementation header: there should be no need to use it outside
  36  * this directory.
  37  */
  38 #ifndef SELECTION_SCANNER_H
  39 #define SELECTION_SCANNER_H
  40
  41 #include "parser.h"
  42
  43 struct gmx_ana_indexgrps_t;
  44 struct gmx_ana_selcollection_t;
  45
  46 #ifndef YY_TYPEDEF_YY_SCANNER_T
  47 #define YY_TYPEDEF_YY_SCANNER_T
  48 typedef void *yyscan_t;
  49 #endif
  50
  51 /** Initializes the selection scanner. */
  52 int
  53 _gmx_sel_init_lexer(yyscan_t *scannerp, struct gmx_ana_selcollection_t *sc,
  54                     bool bInteractive, int maxnr,
  55                     struct gmx_ana_indexgrps_t *grps);
  56 /** Frees memory allocated for the selection scanner. */
  57 void
  58 _gmx_sel_free_lexer(yyscan_t scanner);
  59
  60 /** Returns TRUE if the scanner is interactive. */
  61 bool
  62 _gmx_sel_is_lexer_interactive(yyscan_t scanner);
  63 /** Returns the selection collection for the scanner. */
  64 struct gmx_ana_selcollection_t *
  65 _gmx_sel_lexer_selcollection(yyscan_t scanner);
  66 /** Returns the external index groups for the scanner. */
  67 struct gmx_ana_indexgrps_t *
  68 _gmx_sel_lexer_indexgrps(yyscan_t scanner);
  69 /** Returns the number of selections after which the parser should stop. */
  70 int
  71 _gmx_sel_lexer_exp_selcount(yyscan_t scanner);
  72
  73 /** Returns a pretty string of the current selection.  */
  74 const char *
  75 _gmx_sel_lexer_pselstr(yyscan_t scanner);
  76 /** Clears the current selection string.  */
  77 void
  78 _gmx_sel_lexer_clear_pselstr(yyscan_t scanner);
  79 /** Clears the method stack in the scanner in error situations. */
  80 void
  81 _gmx_sel_lexer_clear_method_stack(yyscan_t scanner);
  82 /** Notifies the scanner that a complete method expression has been parsed. */
  83 void
  84 _gmx_sel_finish_method(yyscan_t scanner);
  85 /** Initializes the scanner to scan a file. */
  86 void
  87 _gmx_sel_set_lex_input_file(yyscan_t scanner, FILE *fp);
  88 /** Initializes the scanner to scan a string. */
  89 void
  90 _gmx_sel_set_lex_input_str(yyscan_t scanner, const char *str);
  91
  92 /** A wrapper for the actual scanner, used by the Bison parser. */
  93 int
  94 _gmx_sel_yyblex(YYSTYPE *yylval, yyscan_t yyscanner);
  95
  96 #endif