--- /dev/null
+%{
+/* SCCS Id: @(#)dgn_lex.c 3.3 96/03/02 */
+/* 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"
+
+/*
+ * Most of these don't exist in flex, yywrap is macro and
+ * yyunput is properly declared in flex.skel.
+ */
+#if !defined(FLEX_SCANNER) && !defined(FLEXHACK_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.
+ *
+ * Digital UNIX is difficult and still has int in spite of all
+ * other signs.
+ */
+# if defined(NeXT) || defined(SVR4) || defined(_AIX32)
+# define VOIDYYPUT
+# endif
+# if !defined(VOIDYYPUT) && defined(POSIX_TYPES)
+# if !defined(BOS) && !defined(HISX) && !defined(_M_UNIX) && !defined(VMS)
+# define VOIDYYPUT
+# endif
+# endif
+# if !defined(VOIDYYPUT) && defined(WEIRD_LEX)
+# if defined(SUNOS4) && defined(__STDC__) && (WEIRD_LEX > 1)
+# define VOIDYYPUT
+# endif
+# endif
+# if defined(VOIDYYPUT) && defined(__osf__)
+# undef VOIDYYPUT
+# endif
+# ifdef VOIDYYPUT
+void FDECL(yyunput, (int));
+void FDECL(yyoutput, (int));
+# else
+int FDECL(yyunput, (int));
+int FDECL(yyoutput, (int));
+# endif
+#endif /* !FLEX_SCANNER && !FLEXHACK_SCANNER */
+
+#ifdef FLEX_SCANNER
+#define YY_MALLOC_DECL \
+ genericptr_t FDECL(malloc, (size_t)); \
+ genericptr_t FDECL(realloc, (genericptr_t,size_t));
+#endif
+
+
+void FDECL(init_yyin, (FILE *));
+void FDECL(init_yyout, (FILE *));
+
+/* 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) && !defined(FLEXHACK_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 && !FLEXHACK_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;
+{
+#if defined(FLEX_SCANNER) || defined(FLEXHACK_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;
+}
+
+/*dgn_comp.l*/