Parser/parser.h

   1 #ifndef Py_PARSER_H
   2 #define Py_PARSER_H
   3 #ifdef __cplusplus
   4 extern "C" {
   5 #endif
   6
   7 /***********************************************************
   8 Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum,
   9 Amsterdam, The Netherlands.
  10
  11                         All Rights Reserved
  12
  13 Permission to use, copy, modify, and distribute this software and its
  14 documentation for any purpose and without fee is hereby granted,
  15 provided that the above copyright notice appear in all copies and that
  16 both that copyright notice and this permission notice appear in
  17 supporting documentation, and that the names of Stichting Mathematisch
  18 Centrum or CWI not be used in advertising or publicity pertaining to
  19 distribution of the software without specific, written prior permission.
  20
  21 STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
  22 THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
  23 FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
  24 FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  25 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  26 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
  27 OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  28
  29 ******************************************************************/
  30
  31 /* Parser interface */
  32
  33 #define MAXSTACK 500
  34
  35 typedef struct _stackentry {
  36         int              s_state;       /* State in current DFA */
  37         dfa             *s_dfa;         /* Current DFA */
  38         struct _node    *s_parent;      /* Where to add next node */
  39 } stackentry;
  40
  41 typedef struct _stack {
  42         stackentry      *s_top;         /* Top entry */
  43         stackentry       s_base[MAXSTACK];/* Array of stack entries */
  44                                         /* NB The stack grows down */
  45 } stack;
  46
  47 typedef struct {
  48         struct _stack    p_stack;       /* Stack of parser states */
  49         struct _grammar *p_grammar;     /* Grammar to use */
  50         struct _node    *p_tree;        /* Top of parse tree */
  51 } parser_state;
  52
  53 parser_state *newparser PROTO((struct _grammar *g, int start));
  54 void delparser PROTO((parser_state *ps));
  55 int addtoken PROTO((parser_state *ps, int type, char *str, int lineno));
  56 void addaccelerators PROTO((grammar *g));
  57
  58 #ifdef __cplusplus
  59 }
  60 #endif
  61 #endif /* !Py_PARSER_H */