%{
/*	SCCS Id: @(#)dgn_lex.c	3.1	92/10/23	*/
/*	Copyright (c) 1989 by Jean-Christophe Collet */
/*	Copyright (c) 1990 by M. Stephenson	     */
/* NetHack may be freely redistributed.  See license for details. */

#define DGN_COMP

#include "config.h"
#include "dgn_comp.h"
#include "dgn_file.h"

long *FDECL(alloc, (unsigned int));
/*
 * Most of these don't exist in flex, yywrap is macro and
 * yyunput is properly declared in flex.skel.
 */
#ifndef FLEX_SCANNER
int FDECL (yyback, (int *, int));
int NDECL (yylook);
int NDECL (yyinput);
int NDECL (yywrap);
int NDECL (yylex);
	/* Traditional lexes let yyunput() and yyoutput() default to int;
	 * newer ones may declare them as void since they don't return
	 * values.  For even more fun, the lex supplied as part of the
	 * newer unbundled compiler for SunOS 4.x adds the void declarations
	 * (under __STDC__ or _cplusplus ifdefs -- otherwise they remain
	 * int) while the bundled lex and the one with the older unbundled
	 * compiler do not.  To detect this, we need help from outside --
	 * sys/unix/Makefile.utl.
	 */
# if defined(NeXT) || defined(SVR4)
#  define VOIDYYPUT
# endif
# if !defined(VOIDYYPUT)
#  if defined(POSIX_TYPES) && !defined(BOS) && !defined(HISX)
#   define VOIDYYPUT
#  endif
# endif
# if !defined(VOIDYYPUT) && defined(WEIRD_LEX)
#  if defined(SUNOS4) && defined(__STDC__) && (WEIRD_LEX != 0) 
#   define VOIDYYPUT
#  endif
# endif
# ifdef VOIDYYPUT
void FDECL (yyunput, (int));
void FDECL (yyoutput, (int));
# else
int FDECL (yyunput, (int));
int FDECL (yyoutput, (int));
# endif
#endif	/* FLEX_SCANNER */

void FDECL (init_yyin, (FILE *));
void FDECL (init_yyout, (FILE *));

#ifdef MICRO
#undef exit
extern void FDECL(exit, (int));
#endif

/* this doesn't always get put in dgn_comp.h
 * (esp. when using older versions of bison)
 */

extern YYSTYPE yylval;

int line_number = 1;
/*
 *	This is a hack required by Michael Hamel to get things
 *	working on the Mac.
 */
#if defined(applec) && !defined(FLEX_SCANNER)
#undef input
#undef unput
#define unput(c) { yytchar = (c); if (yytchar == 10) yylineno--; *yysptr++ = yytchar; }				  
# ifndef YYNEWLINE
# define YYNEWLINE 10
# endif

char
input() {	/* Under MPW \n is chr(13)! Compensate for this. */

	if (yysptr > yysbuf) return(*--yysptr);
	else {
		yytchar = getc(yyin);
	 	if (yytchar == '\n') {
		    yylineno++;
		    return(YYNEWLINE);
		}
		if (yytchar == EOF) return(0);
		else		    return(yytchar);
	}
}
#endif	/* applec && !FLEX_SCANNER */

%}
%%
DUNGEON		return(A_DUNGEON);
up		{ yylval.i=1; return(UP_OR_DOWN); }
down		{ yylval.i=0; return(UP_OR_DOWN); }
ENTRY		return(ENTRY);
stair		return(STAIR);
no_up		return(NO_UP);
no_down		return(NO_DOWN);
portal		return(PORTAL);
PROTOFILE	return(PROTOFILE);
DESCRIPTION	return(DESCRIPTION);
LEVELDESC	return(LEVELDESC);
ALIGNMENT       return(ALIGNMENT);
LEVALIGN        return(LEVALIGN);
town		{ yylval.i=TOWN ; return(DESCRIPTOR); }
hellish		{ yylval.i=HELLISH ; return(DESCRIPTOR); }
mazelike	{ yylval.i=MAZELIKE ; return(DESCRIPTOR); }
roguelike	{ yylval.i=ROGUELIKE ; return(DESCRIPTOR); }
unaligned       { yylval.i=D_ALIGN_NONE ; return(DESCRIPTOR); }
noalign         { yylval.i=D_ALIGN_NONE ; return(DESCRIPTOR); }
lawful          { yylval.i=D_ALIGN_LAWFUL ; return(DESCRIPTOR); }
neutral         { yylval.i=D_ALIGN_NEUTRAL ; return(DESCRIPTOR); }
chaotic         { yylval.i=D_ALIGN_CHAOTIC ; return(DESCRIPTOR); }
BRANCH		return(BRANCH);
CHAINBRANCH	return(CHBRANCH);
LEVEL		return(LEVEL);
RNDLEVEL	return(RNDLEVEL);
CHAINLEVEL	return(CHLEVEL);
RNDCHLEVEL	return(RNDCHLEVEL);
[-0-9]+		{ yylval.i=atoi(yytext); return(INTEGER); }
\"[^"]*\"	{ yytext[yyleng-1] = 0; /* Discard the trailing \" */
		  yylval.str = (char *) alloc(strlen(yytext+1)+1);
		  strcpy(yylval.str, yytext+1); /* Discard the first \" */
		  return(STRING); }
^#.*\n		{ line_number++; }
\n		{ line_number++; }
[ \t]+		;	/* skip trailing tabs & spaces */
.		{ return yytext[0]; }
%%

/* routine to switch to another input file; needed for flex */
void init_yyin( input_f )
FILE *input_f;
{
#ifdef FLEX_SCANNER
	if (yyin)
	    yyrestart(input_f);
	else
#endif
	    yyin = input_f;
}
/* analogous routine (for completeness) */
void init_yyout( output_f )
FILE *output_f;
{
	yyout = output_f;
}