/* National Institute of Standards and Technology (NIST)
/* National Computer System Laboratory (NCSL)
/* Office Systems Engineering (OSE) Group
/* ********************************************************************
/*                            D I S C L A I M E R
/*                              (March 8, 1989)
/*  
/* There is no warranty for the NIST NCSL OSE SGML parser and/or the NIST
/* NCSL OSE SGML parser validation suite.  If the SGML parser and/or
/* validation suite is modified by someone else and passed on, NIST wants
/* the parser's recipients to know that what they have is not what NIST
/* distributed, so that any problems introduced by others will not
/* reflect on our reputation.
/* 
/* Policies
/* 
/* 1. Anyone may copy and distribute verbatim copies of the SGML source
/* code as received in any medium.
/* 
/* 2. Anyone may modify your copy or copies of SGML parser source code or
/* any portion of it, and copy and distribute such modifications provided
/* that all modifications are clearly associated with the entity that
/* performs the modifications.
/* 
/* NO WARRANTY
/* ===========
/* 
/* NIST PROVIDES ABSOLUTELY NO WARRANTY.  THE SGML PARSER AND VALIDATION
/* SUITE ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
/* EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
/* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
/* THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS
/* WITH YOU.  SHOULD THE SGML PARSER OR VALIDATION SUITE PROVE DEFECTIVE,
/* YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
/* 
/* IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL NIST BE LIABLE FOR
/* DAMAGES, INCLUDING ANY LOST PROFITS, LOST MONIES, OR OTHER SPECIAL,
/* INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR
/* INABILITY TO USE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA
/* BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR A
/* FAILURE OF THE PROGRAM TO OPERATE WITH PROGRAMS NOT DISTRIBUTED BY
/* NIST) THE PROGRAM, EVEN IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF
/* SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.
*/

/************************************************************************/
/*   TITLE:          SGML PARSER                                        */
/*   SYSTEM:         DTD PROCESSOR                                      */
/*   SUBSYSTEM:                                                         */
/*   SOURCE FILE:    PARSE1A.H                                          */
/*   AUTHOR:         Jim Heath                                          */
/*                                                                      */
/*   DATE CREATED:                                                      */
/*   LAST MODIFIED:                                                     */
/*                                                                      */
/*                  REVISIONS                                           */
/*   WHEN      WHO            WHY                                       */
/************************************************************************/
#define    NO       0
#define    YES      1
#define    JUNK     0x7BCD
/*#define    JDEBUG   1*/
enum FLAG {START, LEFT, RIGHT};
enum RFLAG {STAG_REQD, STAG_OPTIONAL};
/* ==================================================================== */
#define ISOPTIONAL(x) ((x == '?') || (x == '*'))
#define ISCONNECTOR(x) ((x == COMMA) || (x == AND) || (x == OR))
#define ISTERMINAL(x)  ((x != COMMA) && (x != AND) && (x != OR))
/* ==================================================================== */
#define    MAXNODES 256
/* ==================================================================== */
typedef  struct treenode {
           int  Tleft;
           int  Tright;
           int  Tvalue;
           int  Toi;
           enum CONTEXT Tcontext;
           int  Tandcount;
           int  Tinfo;
         } TREENODE;
/* ==================================================================== */

/*global*/  int main();
/*global*/  void bldsymbltbl();
/*global*/  int bldtree();
/*global*/  void traverse();
/*global*/  int traverseleft();
/*global*/  int traverseright();
/*global*/  int oifnc();
/*global*/  void printnode();
/*global*/  void heading();
/*global*/  void error();
/*global*/  void doopts();
/*global*/  char *getmsg();
/*global*/  int reqmntfnc();