1 /* flex - tool to generate fast lexical analyzers */
4 * Copyright (c) 1990 The Regents of the University of California.
7 * This code is derived from software contributed to Berkeley by
10 * The United States Government has rights in this work pursuant
11 * to contract no. DE-AC03-76SF00098 between the United States
12 * Department of Energy and the University of California.
14 * Redistribution and use in source and binary forms are permitted provided
15 * that: (1) source distributions retain this entire copyright notice and
16 * comment, and (2) distributions including binaries display the following
17 * acknowledgement: ``This product includes software developed by the
18 * University of California, Berkeley and its contributors'' in the
19 * documentation or other materials provided with the distribution and in
20 * all advertising materials mentioning features or use of this software.
21 * Neither the name of the University nor the names of its contributors may
22 * be used to endorse or promote products derived from this software without
23 * specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
25 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
26 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
28 * @(#) Copyright (c) 1990 The Regents of the University of California. All rights reserved.
29 * $Header: /home/daffy/u0/vern/flex/RCS/main.c,v 2.64 96/05/25 20:42:42 vern Exp $
32 /* $Header: /home/daffy/u0/vern/flex/RCS/main.c,v 2.64 96/05/25 20:42:42 vern Exp $ */
33 /* $FreeBSD: src/usr.bin/lex/main.c,v 1.7 1999/10/27 07:56:45 obrien Exp $ */
34 /* $DragonFly: src/usr.bin/lex/main.c,v 1.4 2005/02/20 17:34:11 asmodai Exp $ */
40 static char flex_version[] = FLEX_VERSION;
43 /* declare functions that have forward references */
45 void flexinit PROTO((int, char**));
46 void readin PROTO((void));
47 void set_up_initial_allocations PROTO((void));
49 #ifdef NEED_ARGV_FIXUP
50 extern void argv_fixup PROTO((int *, char ***));
54 /* these globals are all defined and commented in flexdef.h */
55 int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, spprdflt;
56 int interactive, caseins, lex_compat, do_yylineno, useecs, fulltbl, usemecs;
57 int fullspd, gen_line_dirs, performance_report, backing_up_report;
58 int C_plus_plus, long_align, use_read, yytext_is_array, do_yywrap, csize;
59 int yymore_used, reject, real_reject, continued_action, in_rule;
60 int yymore_really_used, reject_really_used;
61 int datapos, dataline, linenum, out_linenum;
62 FILE *skelfile = NULL;
65 int action_size, defs1_offset, prolog_offset, action_offset, action_index;
66 char *infilename = NULL, *outfilename = NULL;
68 char *prefix, *yyclass;
69 int do_stdinit, use_stdout;
70 int onestate[ONE_STACK_SIZE], onesym[ONE_STACK_SIZE];
71 int onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp;
72 int current_mns, current_max_rules;
73 int num_rules, num_eof_rules, default_rule, lastnfa;
74 int *firstst, *lastst, *finalst, *transchar, *trans1, *trans2;
75 int *accptnum, *assoc_rule, *state_type;
76 int *rule_type, *rule_linenum, *rule_useful;
77 int current_state_type;
78 int variable_trailing_context_rules;
79 int numtemps, numprots, protprev[MSP], protnext[MSP], prottbl[MSP];
80 int protcomst[MSP], firstprot, lastprot, protsave[PROT_SAVE_SIZE];
81 int numecs, nextecm[CSIZE + 1], ecgroup[CSIZE + 1], nummecs, tecfwd[CSIZE + 1];
82 int tecbck[CSIZE + 1];
83 int lastsc, *scset, *scbol, *scxclu, *sceof;
86 int current_max_dfa_size, current_max_xpairs;
87 int current_max_template_xpairs, current_max_dfas;
88 int lastdfa, *nxt, *chk, *tnxt;
89 int *base, *def, *nultrans, NUL_ec, tblend, firstfree, **dss, *dfasiz;
90 union dfaacc_union *dfaacc;
91 int *accsiz, *dhash, numas;
92 int numsnpairs, jambase, jamstate;
93 int lastccl, *cclmap, *ccllen, *cclng, cclreuse;
94 int current_maxccls, current_max_ccl_tbl_size;
97 int sectnum, nummt, hshcol, dfaeql, numeps, eps2, num_reallocs;
98 int tmpuses, totnst, peakpairs, numuniq, numdup, hshsave;
99 int num_backing_up, bol_needed;
100 FILE *backing_up_file;
101 int end_of_buffer_state;
105 /* Make sure program_name is initialized so we don't crash if writing
106 * out an error message before getting the program name from argv[0].
108 char *program_name = "flex";
110 #ifndef SHORT_FILE_NAMES
111 static char *outfile_template = "lex.%s.%s";
112 static char *backing_name = "lex.backup";
114 static char *outfile_template = "lex%s.%s";
115 static char *backing_name = "lex.bck";
118 static char outfile_path[MAXLINE];
119 static int outfile_created = 0;
120 static char *skelname = NULL;
123 int main(int argc, char **argv)
127 #ifdef NEED_ARGV_FIXUP
128 argv_fixup( &argc, &argv );
131 flexinit( argc, argv );
137 for ( i = 1; i <= num_rules; ++i )
138 if ( ! rule_useful[i] && i != default_rule )
139 line_warning( _( "rule cannot be matched" ),
142 if ( spprdflt && ! reject && rule_useful[default_rule] )
144 _( "-s option given but default rule can be matched" ),
145 rule_linenum[default_rule] );
147 /* Generate the C state transition tables from the DFA. */
150 /* Note, flexend does not return. It exits with its argument
155 return 0; /* keep compilers/lint happy */
159 /* check_options - check user-specified options */
161 void check_options(void)
168 flexerror( _( "Can't use -+ with -l option" ) );
170 if ( fulltbl || fullspd )
171 flexerror( _( "Can't use -f or -F with -l option" ) );
173 /* Don't rely on detecting use of yymore() and REJECT,
174 * just assume they'll be used.
176 yymore_really_used = reject_really_used = true;
178 yytext_is_array = true;
184 /* This should really be "maintain_backup_tables = true" */
185 reject_really_used = true;
187 if ( csize == unspecified )
189 if ( (fulltbl || fullspd) && ! useecs )
190 csize = DEFAULT_CSIZE;
195 if ( interactive == unspecified )
197 if ( fulltbl || fullspd )
203 if ( fulltbl || fullspd )
207 _( "-Cf/-CF and -Cm don't make sense together" ) );
210 flexerror( _( "-Cf/-CF and -I are incompatible" ) );
214 _( "-Cf/-CF are incompatible with lex-compatibility mode" ) );
218 _( "-Cf/-CF and %option yylineno are incompatible" ) );
220 if ( fulltbl && fullspd )
221 flexerror( _( "-Cf and -CF are mutually exclusive" ) );
224 if ( C_plus_plus && fullspd )
225 flexerror( _( "Can't use -+ with -CF option" ) );
227 if ( C_plus_plus && yytext_is_array )
229 warn( _( "%array incompatible with -+ option" ) );
230 yytext_is_array = false;
234 { /* Set up doubly-linked equivalence classes. */
236 /* We loop all the way up to csize, since ecgroup[csize] is
237 * the position used for NUL characters.
241 for ( i = 2; i <= csize; ++i )
247 nextecm[csize] = NIL;
252 /* Put everything in its own equivalence class. */
253 for ( i = 1; i <= csize; ++i )
256 nextecm[i] = BAD_SUBSCRIPT; /* to catch errors */
264 if ( ! did_outfilename )
273 sprintf( outfile_path, outfile_template,
276 outfilename = outfile_path;
279 prev_stdout = freopen( outfilename, "w", stdout );
281 if ( prev_stdout == NULL )
282 lerrsf( _( "could not create %s" ), outfilename );
287 if ( skelname && (skelfile = fopen( skelname, "r" )) == NULL )
288 lerrsf( _( "can't open skeleton file %s" ), skelname );
290 if ( strcmp( prefix, "yy" ) )
292 #define GEN_PREFIX(name) out_str3( "#define yy%s %s%s\n", name, prefix, name )
294 GEN_PREFIX( "FlexLexer" );
297 GEN_PREFIX( "_create_buffer" );
298 GEN_PREFIX( "_delete_buffer" );
299 GEN_PREFIX( "_scan_buffer" );
300 GEN_PREFIX( "_scan_string" );
301 GEN_PREFIX( "_scan_bytes" );
302 GEN_PREFIX( "_flex_debug" );
303 GEN_PREFIX( "_init_buffer" );
304 GEN_PREFIX( "_flush_buffer" );
305 GEN_PREFIX( "_load_buffer_state" );
306 GEN_PREFIX( "_switch_to_buffer" );
308 GEN_PREFIX( "leng" );
311 GEN_PREFIX( "restart" );
312 GEN_PREFIX( "text" );
315 GEN_PREFIX( "lineno" );
319 GEN_PREFIX( "wrap" );
324 if ( did_outfilename )
325 line_directive_out( stdout, 0 );
331 /* flexend - terminate flex
334 * This routine does not return.
337 void flexend(int exit_status)
342 if ( skelfile != NULL )
344 if ( ferror( skelfile ) )
345 lerrsf( _( "input error reading skeleton file %s" ),
348 else if ( fclose( skelfile ) )
349 lerrsf( _( "error closing skeleton file %s" ),
353 if ( exit_status != 0 && outfile_created )
355 if ( ferror( stdout ) )
356 lerrsf( _( "error writing output file %s" ),
359 else if ( fclose( stdout ) )
360 lerrsf( _( "error closing output file %s" ),
363 else if ( unlink( outfilename ) )
364 lerrsf( _( "error deleting output file %s" ),
368 if ( backing_up_report && backing_up_file )
370 if ( num_backing_up == 0 )
371 fprintf( backing_up_file, _( "No backing up.\n" ) );
372 else if ( fullspd || fulltbl )
373 fprintf( backing_up_file,
374 _( "%d backing up (non-accepting) states.\n" ),
377 fprintf( backing_up_file,
378 _( "Compressed tables always back up.\n" ) );
380 if ( ferror( backing_up_file ) )
381 lerrsf( _( "error writing backup file %s" ),
384 else if ( fclose( backing_up_file ) )
385 lerrsf( _( "error closing backup file %s" ),
391 fprintf( stderr, _( "%s version %s usage statistics:\n" ),
392 program_name, flex_version );
394 fprintf( stderr, _( " scanner options: -" ) );
398 if ( backing_up_report )
406 if ( performance_report > 0 )
408 if ( performance_report > 1 )
415 putc( 'v', stderr ); /* always true! */
418 if ( interactive == false )
420 if ( interactive == true )
422 if ( ! gen_line_dirs )
427 if ( csize == unspecified )
428 /* We encountered an error fairly early on, so csize
429 * never got specified. Define it now, to prevent
430 * bogus table sizes being written out below.
439 fprintf( stderr, " -C" );
454 if ( did_outfilename )
455 fprintf( stderr, " -o%s", outfilename );
458 fprintf( stderr, " -S%s", skelname );
460 if ( strcmp( prefix, "yy" ) )
461 fprintf( stderr, " -P%s", prefix );
463 putc( '\n', stderr );
465 fprintf( stderr, _( " %d/%d NFA states\n" ),
466 lastnfa, current_mns );
467 fprintf( stderr, _( " %d/%d DFA states (%d words)\n" ),
468 lastdfa, current_max_dfas, totnst );
469 fprintf( stderr, _( " %d rules\n" ),
470 num_rules + num_eof_rules - 1 /* - 1 for def. rule */ );
472 if ( num_backing_up == 0 )
473 fprintf( stderr, _( " No backing up\n" ) );
474 else if ( fullspd || fulltbl )
476 _( " %d backing-up (non-accepting) states\n" ),
480 _( " Compressed tables always back-up\n" ) );
484 _( " Beginning-of-line patterns used\n" ) );
486 fprintf( stderr, _( " %d/%d start conditions\n" ), lastsc,
489 _( " %d epsilon states, %d double epsilon states\n" ),
493 fprintf( stderr, _( " no character classes\n" ) );
496 _( " %d/%d character classes needed %d/%d words of storage, %d reused\n" ),
497 lastccl, current_maxccls,
498 cclmap[lastccl] + ccllen[lastccl],
499 current_max_ccl_tbl_size, cclreuse );
501 fprintf( stderr, _( " %d state/nextstate pairs created\n" ),
503 fprintf( stderr, _( " %d/%d unique/duplicate transitions\n" ),
508 tblsiz = lastdfa * numecs;
509 fprintf( stderr, _( " %d table entries\n" ), tblsiz );
514 tblsiz = 2 * (lastdfa + numtemps) + 2 * tblend;
517 _( " %d/%d base-def entries created\n" ),
518 lastdfa + numtemps, current_max_dfas );
520 _( " %d/%d (peak %d) nxt-chk entries created\n" ),
521 tblend, current_max_xpairs, peakpairs );
523 _( " %d/%d (peak %d) template nxt-chk entries created\n" ),
525 current_max_template_xpairs,
527 fprintf( stderr, _( " %d empty table entries\n" ),
529 fprintf( stderr, _( " %d protos created\n" ),
532 _( " %d templates created, %d uses\n" ),
538 tblsiz = tblsiz + csize;
540 _( " %d/%d equivalence classes created\n" ),
546 tblsiz = tblsiz + numecs;
548 _( " %d/%d meta-equivalence classes created\n" ),
553 _( " %d (%d saved) hash collisions, %d DFAs equal\n" ),
554 hshcol, hshsave, dfaeql );
555 fprintf( stderr, _( " %d sets of reallocations needed\n" ),
557 fprintf( stderr, _( " %d total table entries needed\n" ),
565 /* flexinit - initialize flex */
567 void flexinit(int argc, char **argv)
572 printstats = syntaxerror = trace = spprdflt = caseins = false;
573 lex_compat = C_plus_plus = backing_up_report = ddebug = fulltbl = false;
574 fullspd = long_align = nowarn = yymore_used = continued_action = false;
575 do_yylineno = yytext_is_array = in_rule = reject = do_stdinit = false;
576 yymore_really_used = reject_really_used = unspecified;
577 interactive = csize = unspecified;
578 do_yywrap = gen_line_dirs = usemecs = useecs = true;
579 performance_report = 0;
583 use_read = use_stdout = false;
587 /* Initialize dynamic array for holding the rule actions. */
588 action_size = 2048; /* default size of action array in bytes */
589 action_array = allocate_character_array( action_size );
590 defs1_offset = prolog_offset = action_offset = action_index = 0;
591 action_array[0] = '\0';
593 program_name = argv[0];
595 if ( program_name[0] != '\0' &&
596 program_name[strlen( program_name ) - 1] == '+' )
600 for ( --argc, ++argv; argc ; --argc, ++argv )
604 if ( arg[0] != '-' || arg[1] == '\0' )
609 if ( ! strcmp( arg, "--help" ) )
612 else if ( ! strcmp( arg, "--version" ) )
615 else if ( ! strcmp( arg, "--" ) )
616 { /* end of options */
623 for ( i = 1; arg[i] != '\0'; ++i )
635 backing_up_report = true;
644 _( "-C flag must be given separately" ) );
654 for ( ++i; arg[i] != '\0'; ++i )
684 _( "unknown -C option '%c'" ),
696 useecs = usemecs = false;
697 use_read = fulltbl = true;
701 useecs = usemecs = false;
702 use_read = fullspd = true;
723 gen_line_dirs = false;
727 /* Stupid do-nothing deprecated
735 _( "-o flag must be given separately" ) );
737 outfilename = arg + i + 1;
744 _( "-P flag must be given separately" ) );
746 prefix = arg + i + 1;
750 ++performance_report;
756 _( "-S flag must be given separately" ) );
758 skelname = arg + i + 1;
778 printf( _( "%s version %s\n" ),
779 program_name, flex_version );
796 _( "%s: unknown flag '%c'. For usage, try\n\t%s --help\n" ),
797 program_name, (int) arg[i],
802 /* Used by -C, -S, -o, and -P flags in lieu of a "continue 2"
808 num_input_files = argc;
810 set_input_file( num_input_files > 0 ? input_files[0] : NULL );
812 lastccl = lastsc = lastdfa = lastnfa = 0;
813 num_rules = num_eof_rules = default_rule = 0;
814 numas = numsnpairs = tmpuses = 0;
815 numecs = numeps = eps2 = num_reallocs = hshcol = dfaeql = totnst = 0;
816 numuniq = numdup = hshsave = eofseen = datapos = dataline = 0;
817 num_backing_up = onesp = numprots = 0;
818 variable_trailing_context_rules = bol_needed = false;
820 out_linenum = linenum = sectnum = 1;
823 /* Used in mkprot() so that the first proto goes in slot 1
824 * of the proto queue.
828 set_up_initial_allocations();
832 /* readin - read in the rules section of the input file(s) */
836 static char yy_stdinit[] = "FILE *yyin = stdin, *yyout = stdout;";
837 static char yy_nostdinit[] =
838 "FILE *yyin = NULL, *yyout = NULL;";
840 line_directive_out( NULL, 1 );
844 pinpoint_message( _( "fatal parse error" ) );
851 if ( backing_up_report )
853 backing_up_file = fopen( backing_name, "w" );
854 if ( backing_up_file == NULL )
856 _( "could not create backing-up info file %s" ),
861 backing_up_file = NULL;
863 if ( yymore_really_used == true )
865 else if ( yymore_really_used == false )
868 if ( reject_really_used == true )
870 else if ( reject_really_used == false )
873 if ( performance_report > 0 )
878 _( "-l AT&T lex compatibility option entails a large performance penalty\n" ) );
880 _( " and may be the actual source of other reported performance penalties\n" ) );
883 else if ( do_yylineno )
886 _( "%%option yylineno entails a large performance penalty\n" ) );
889 if ( performance_report > 1 )
893 _( "-I (interactive) entails a minor performance penalty\n" ) );
897 _( "yymore() entails a minor performance penalty\n" ) );
902 _( "REJECT entails a large performance penalty\n" ) );
904 if ( variable_trailing_context_rules )
906 _( "Variable trailing context rules entail a large performance penalty\n" ) );
912 if ( variable_trailing_context_rules )
915 if ( (fulltbl || fullspd) && reject )
919 _( "REJECT cannot be used with -f or -F" ) );
920 else if ( do_yylineno )
922 _( "%option yylineno cannot be used with -f or -F" ) );
925 _( "variable trailing context rules cannot be used with -f or -F" ) );
929 outn( "\n#define YY_USES_REJECT" );
933 outn( "\n#define yywrap() 1" );
934 outn( "#define YY_SKIP_YYWRAP" );
938 outn( "\n#define FLEX_DEBUG" );
941 outn( "typedef unsigned char YY_CHAR;" );
943 outn( "typedef char YY_CHAR;" );
947 outn( "#define yytext_ptr yytext" );
950 outn( "#define YY_INTERACTIVE" );
961 outn( yy_nostdinit );
965 outn( "typedef yyconst struct yy_trans_info *yy_state_type;" );
966 else if ( ! C_plus_plus )
967 outn( "typedef int yy_state_type;" );
970 outn( "\n#define FLEX_DEBUG" );
973 outn( "#define YY_FLEX_LEX_COMPAT" );
975 if ( do_yylineno && ! C_plus_plus )
977 outn( "extern int yylineno;" );
978 outn( "int yylineno = 1;" );
983 outn( "\n#include <FlexLexer.h>" );
987 outn( "int yyFlexLexer::yylex()" );
990 "\tLexerError( \"yyFlexLexer::yylex invoked but %option yyclass used\" );" );
991 outn( "\treturn 0;" );
994 out_str( "\n#define YY_DECL int %s::yylex()\n",
1001 if ( yytext_is_array )
1002 outn( "extern char yytext[];\n" );
1006 outn( "extern char *yytext;" );
1007 outn( "#define yytext_ptr yytext" );
1012 _( "%option yyclass only meaningful for C++ scanners" ) );
1016 numecs = cre8ecs( nextecm, ecgroup, csize );
1020 /* Now map the equivalence class for NUL to its expected place. */
1021 ecgroup[0] = ecgroup[csize];
1022 NUL_ec = ABS( ecgroup[0] );
1029 /* set_up_initial_allocations - allocate memory for internal tables */
1031 void set_up_initial_allocations(void)
1033 current_mns = INITIAL_MNS;
1034 firstst = allocate_integer_array( current_mns );
1035 lastst = allocate_integer_array( current_mns );
1036 finalst = allocate_integer_array( current_mns );
1037 transchar = allocate_integer_array( current_mns );
1038 trans1 = allocate_integer_array( current_mns );
1039 trans2 = allocate_integer_array( current_mns );
1040 accptnum = allocate_integer_array( current_mns );
1041 assoc_rule = allocate_integer_array( current_mns );
1042 state_type = allocate_integer_array( current_mns );
1044 current_max_rules = INITIAL_MAX_RULES;
1045 rule_type = allocate_integer_array( current_max_rules );
1046 rule_linenum = allocate_integer_array( current_max_rules );
1047 rule_useful = allocate_integer_array( current_max_rules );
1049 current_max_scs = INITIAL_MAX_SCS;
1050 scset = allocate_integer_array( current_max_scs );
1051 scbol = allocate_integer_array( current_max_scs );
1052 scxclu = allocate_integer_array( current_max_scs );
1053 sceof = allocate_integer_array( current_max_scs );
1054 scname = allocate_char_ptr_array( current_max_scs );
1056 current_maxccls = INITIAL_MAX_CCLS;
1057 cclmap = allocate_integer_array( current_maxccls );
1058 ccllen = allocate_integer_array( current_maxccls );
1059 cclng = allocate_integer_array( current_maxccls );
1061 current_max_ccl_tbl_size = INITIAL_MAX_CCL_TBL_SIZE;
1062 ccltbl = allocate_Character_array( current_max_ccl_tbl_size );
1064 current_max_dfa_size = INITIAL_MAX_DFA_SIZE;
1066 current_max_xpairs = INITIAL_MAX_XPAIRS;
1067 nxt = allocate_integer_array( current_max_xpairs );
1068 chk = allocate_integer_array( current_max_xpairs );
1070 current_max_template_xpairs = INITIAL_MAX_TEMPLATE_XPAIRS;
1071 tnxt = allocate_integer_array( current_max_template_xpairs );
1073 current_max_dfas = INITIAL_MAX_DFAS;
1074 base = allocate_integer_array( current_max_dfas );
1075 def = allocate_integer_array( current_max_dfas );
1076 dfasiz = allocate_integer_array( current_max_dfas );
1077 accsiz = allocate_integer_array( current_max_dfas );
1078 dhash = allocate_integer_array( current_max_dfas );
1079 dss = allocate_int_ptr_array( current_max_dfas );
1080 dfaacc = allocate_dfaacc_union( current_max_dfas );
1091 _( "%s [-bcdfhilnpstvwBFILTV78+? -C[aefFmr] -ooutput -Pprefix -Sskeleton]\n" ),
1093 fprintf( f, _( "\t[--help --version] [file ...]\n" ) );
1095 fprintf( f, _( "\t-b generate backing-up information to %s\n" ),
1097 fprintf( f, _( "\t-c do-nothing POSIX option\n" ) );
1098 fprintf( f, _( "\t-d turn on debug mode in generated scanner\n" ) );
1099 fprintf( f, _( "\t-f generate fast, large scanner\n" ) );
1100 fprintf( f, _( "\t-h produce this help message\n" ) );
1101 fprintf( f, _( "\t-i generate case-insensitive scanner\n" ) );
1102 fprintf( f, _( "\t-l maximal compatibility with original lex\n" ) );
1103 fprintf( f, _( "\t-n do-nothing POSIX option\n" ) );
1104 fprintf( f, _( "\t-p generate performance report to stderr\n" ) );
1106 _( "\t-s suppress default rule to ECHO unmatched text\n" ) );
1108 if ( ! did_outfilename )
1110 sprintf( outfile_path, outfile_template,
1111 prefix, C_plus_plus ? "cc" : "c" );
1112 outfilename = outfile_path;
1116 _( "\t-t write generated scanner on stdout instead of %s\n" ),
1120 _( "\t-v write summary of scanner statistics to f\n" ) );
1121 fprintf( f, _( "\t-w do not generate warnings\n" ) );
1122 fprintf( f, _( "\t-B generate batch scanner (opposite of -I)\n" ) );
1124 _( "\t-F use alternative fast scanner representation\n" ) );
1126 _( "\t-I generate interactive scanner (opposite of -B)\n" ) );
1127 fprintf( f, _( "\t-L suppress #line directives in scanner\n" ) );
1128 fprintf( f, _( "\t-T %s should run in trace mode\n" ), program_name );
1129 fprintf( f, _( "\t-V report %s version\n" ), program_name );
1130 fprintf( f, _( "\t-7 generate 7-bit scanner\n" ) );
1131 fprintf( f, _( "\t-8 generate 8-bit scanner\n" ) );
1132 fprintf( f, _( "\t-+ generate C++ scanner class\n" ) );
1133 fprintf( f, _( "\t-? produce this help message\n" ) );
1135 _( "\t-C specify degree of table compression (default is -Cem):\n" ) );
1137 _( "\t\t-Ca trade off larger tables for better memory alignment\n" ) );
1138 fprintf( f, _( "\t\t-Ce construct equivalence classes\n" ) );
1140 _( "\t\t-Cf do not compress scanner tables; use -f representation\n" ) );
1142 _( "\t\t-CF do not compress scanner tables; use -F representation\n" ) );
1143 fprintf( f, _( "\t\t-Cm construct meta-equivalence classes\n" ) );
1145 _( "\t\t-Cr use read() instead of stdio for scanner input\n" ) );
1146 fprintf( f, _( "\t-o specify output filename\n" ) );
1147 fprintf( f, _( "\t-P specify scanner prefix other than \"yy\"\n" ) );
1148 fprintf( f, _( "\t-S specify skeleton file\n" ) );
1149 fprintf( f, _( "\t--help produce this help message\n" ) );
1150 fprintf( f, _( "\t--version report %s version\n" ), program_name );