src/gmxlib/selection/symrec.h

   1 /*
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  31 /*! \internal \file
  32  * \brief Handling of selection parser symbol table.
  33  *
  34  * This is an implementation header: there should be no need to use it outside
  35  * this directory.
  36  */
  37 #ifndef SELECTION_SYMREC_H
  38 #define SELECTION_SYMREC_H
  39
  40 struct t_selelem;
  41 struct gmx_ana_selmethod_t;
  42
  43 /** Defines the type of the symbol. */
  44 typedef enum
  45 {
  46     SYMBOL_RESERVED,    /**< The symbol is a reserved keyword. */
  47     SYMBOL_VARIABLE,    /**< The symbol is a variable. */
  48     SYMBOL_METHOD,      /**< The symbol is a selection method. */
  49     SYMBOL_POS,         /**< The symbol is a position keyword. */
  50 } e_symbol_t;
  51
  52 /** Symbol table for the selection parser. */
  53 typedef struct gmx_sel_symtab_t gmx_sel_symtab_t;
  54 /** Single symbol for the selection parser. */
  55 typedef struct gmx_sel_symrec_t gmx_sel_symrec_t;
  56
  57 /** Returns the name of a symbol. */
  58 char *
  59 _gmx_sel_sym_name(gmx_sel_symrec_t *sym);
  60 /** Returns the type of a symbol. */
  61 e_symbol_t
  62 _gmx_sel_sym_type(gmx_sel_symrec_t *sym);
  63 /** Returns the method associated with a \ref SYMBOL_METHOD symbol. */
  64 struct gmx_ana_selmethod_t *
  65 _gmx_sel_sym_value_method(gmx_sel_symrec_t *sym);
  66 /** Returns the method associated with a \ref SYMBOL_VARIABLE symbol. */
  67 struct t_selelem *
  68 _gmx_sel_sym_value_var(gmx_sel_symrec_t *sym);
  69
  70 /** Creates a new symbol table. */
  71 int
  72 _gmx_sel_symtab_create(gmx_sel_symtab_t **tabp);
  73 /** Frees all memory allocated for a symbol table. */
  74 void
  75 _gmx_sel_symtab_free(gmx_sel_symtab_t *tab);
  76 /** Finds a symbol by name. */
  77 gmx_sel_symrec_t *
  78 _gmx_sel_find_symbol(gmx_sel_symtab_t *tab, const char *name, bool bExact);
  79 /** Finds a symbol by name. */
  80 gmx_sel_symrec_t *
  81 _gmx_sel_find_symbol_len(gmx_sel_symtab_t *tab, const char *name, size_t len,
  82                          bool bExact);
  83 /** Returns the first symbol of a given type. */
  84 gmx_sel_symrec_t *
  85 _gmx_sel_first_symbol(gmx_sel_symtab_t *tab, e_symbol_t type);
  86 /** Returns the next symbol of a given type. */
  87 gmx_sel_symrec_t *
  88 _gmx_sel_next_symbol(gmx_sel_symrec_t *after, e_symbol_t type);
  89 /** Adds a new variable symbol. */
  90 gmx_sel_symrec_t *
  91 _gmx_sel_add_var_symbol(gmx_sel_symtab_t *tab, const char *name,
  92                         struct t_selelem *sel);
  93 /** Adds a new method symbol. */
  94 gmx_sel_symrec_t *
  95 _gmx_sel_add_method_symbol(gmx_sel_symtab_t *tab, const char *name,
  96                            struct gmx_ana_selmethod_t *method);
  97
  98 #endif