www.pudn.com > flex_bingle.rar > main.c
/* flex - tool to generate fast lexical analyzers */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Vern Paxson. * * The United States Government has rights in this work pursuant * to contract no. DE-AC03-76SF00098 between the United States * Department of Energy and the University of California. * * Redistribution and use in source and binary forms are permitted provided * that: (1) source distributions retain this entire copyright notice and * comment, and (2) distributions including binaries display the following * acknowledgement: ``This product includes software developed by the * University of California, Berkeley and its contributors'' in the * documentation or other materials provided with the distribution and in * all advertising materials mentioning features or use of this software. * Neither the name of the University nor the names of its contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint char copyright[] = "@(#) Copyright (c) 1990 The Regents of the University of California.\n\ All rights reserved.\n"; #endif /* not lint */ /* $Header: /home/daffy/u0/vern/flex/RCS/main.c,v 2.63 95/04/20 13:53:23 vern Exp $ */ #include "flexdef.h" #include "version.h" static char flex_version[] = FLEX_VERSION; /* declare functions that have forward references */ void flexinit PROTO((int, char**)); void readin PROTO((void)); void set_up_initial_allocations PROTO((void)); #ifdef NEED_ARGV_FIXUP extern void argv_fixup PROTO((int *, char ***)); #endif /* these globals are all defined and commented in flexdef.h */ int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, spprdflt; int interactive, caseins, lex_compat, do_yylineno, useecs, fulltbl, usemecs; int fullspd, gen_line_dirs, performance_report, backing_up_report; int C_plus_plus, long_align, use_read, yytext_is_array, do_yywrap, csize; int yymore_used, reject, real_reject, continued_action, in_rule; int yymore_really_used, reject_really_used; int datapos, dataline, linenum, out_linenum; FILE *skelfile = NULL; int skel_ind = 0; char *action_array; int action_size, defs1_offset, prolog_offset, action_offset, action_index; char *infilename = NULL, *outfilename = NULL; int did_outfilename; char *prefix, *yyclass; int do_stdinit, use_stdout; int onestate[ONE_STACK_SIZE], onesym[ONE_STACK_SIZE]; int onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp; int current_mns, current_max_rules; int num_rules, num_eof_rules, default_rule, lastnfa; int *firstst, *lastst, *finalst, *transchar, *trans1, *trans2; int *accptnum, *assoc_rule, *state_type; int *rule_type, *rule_linenum, *rule_useful; int current_state_type; int variable_trailing_context_rules; int numtemps, numprots, protprev[MSP], protnext[MSP], prottbl[MSP]; int protcomst[MSP], firstprot, lastprot, protsave[PROT_SAVE_SIZE]; int numecs, nextecm[CSIZE + 1], ecgroup[CSIZE + 1], nummecs, tecfwd[CSIZE + 1]; int tecbck[CSIZE + 1]; int lastsc, *scset, *scbol, *scxclu, *sceof; int current_max_scs; char **scname; int current_max_dfa_size, current_max_xpairs; int current_max_template_xpairs, current_max_dfas; int lastdfa, *nxt, *chk, *tnxt; int *base, *def, *nultrans, NUL_ec, tblend, firstfree, **dss, *dfasiz; union dfaacc_union *dfaacc; int *accsiz, *dhash, numas; int numsnpairs, jambase, jamstate; int lastccl, *cclmap, *ccllen, *cclng, cclreuse; int current_maxccls, current_max_ccl_tbl_size; Char *ccltbl; char nmstr[MAXLINE]; int sectnum, nummt, hshcol, dfaeql, numeps, eps2, num_reallocs; int tmpuses, totnst, peakpairs, numuniq, numdup, hshsave; int num_backing_up, bol_needed; FILE *backing_up_file; int end_of_buffer_state; char **input_files; int num_input_files; /* Make sure program_name is initialized so we don't crash if writing * out an error message before getting the program name from argv[0]. */ char *program_name = "flex"; #ifndef SHORT_FILE_NAMES static char *outfile_template = "lex.%s.%s"; static char *backing_name = "lex.backup"; #else static char *outfile_template = "lex%s.%s"; static char *backing_name = "lex.bck"; #endif #ifdef THINK_C #include#endif #ifdef MS_DOS extern unsigned _stklen = 16384; #endif static char outfile_path[MAXLINE]; static int outfile_created = 0; static char *skelname = NULL; int main( argc, argv ) int argc; char **argv; { int i; #ifdef THINK_C argc = ccommand( &argv ); #endif #ifdef NEED_ARGV_FIXUP argv_fixup( &argc, &argv ); #endif flexinit( argc, argv ); readin(); ntod(); for ( i = 1; i <= num_rules; ++i ) if ( ! rule_useful[i] && i != default_rule ) line_warning( _( "rule cannot be matched" ), rule_linenum[i] ); if ( spprdflt && ! reject && rule_useful[default_rule] ) line_warning( _( "-s option given but default rule can be matched" ), rule_linenum[default_rule] ); /* Generate the C state transition tables from the DFA. */ make_tables(); /* Note, flexend does not return. It exits with its argument * as status. */ flexend( 0 ); return 0; /* keep compilers/lint happy */ } /* check_options - check user-specified options */ void check_options() { int i; if ( lex_compat ) { if ( C_plus_plus ) flexerror( _( "Can't use -+ with -l option" ) ); if ( fulltbl || fullspd ) flexerror( _( "Can't use -f or -F with -l option" ) ); /* Don't rely on detecting use of yymore() and REJECT, * just assume they'll be used. */ yymore_really_used = reject_really_used = true; yytext_is_array = true; do_yylineno = true; use_read = false; } if ( do_yylineno ) /* This should really be "maintain_backup_tables = true" */ reject_really_used = true; if ( csize == unspecified ) { if ( (fulltbl || fullspd) && ! useecs ) csize = DEFAULT_CSIZE; else csize = CSIZE; } if ( interactive == unspecified ) { if ( fulltbl || fullspd ) interactive = false; else interactive = true; } if ( fulltbl || fullspd ) { if ( usemecs ) flexerror( _( "-Cf/-CF and -Cm don't make sense together" ) ); if ( interactive ) flexerror( _( "-Cf/-CF and -I are incompatible" ) ); if ( lex_compat ) flexerror( _( "-Cf/-CF are incompatible with lex-compatibility mode" ) ); if ( do_yylineno ) flexerror( _( "-Cf/-CF and %option yylineno are incompatible" ) ); if ( fulltbl && fullspd ) flexerror( _( "-Cf and -CF are mutually exclusive" ) ); } if ( C_plus_plus && fullspd ) flexerror( _( "Can't use -+ with -CF option" ) ); if ( C_plus_plus && yytext_is_array ) { warn( _( "%array incompatible with -+ option" ) ); yytext_is_array = false; } if ( useecs ) { /* Set up doubly-linked equivalence classes. */ /* We loop all the way up to csize, since ecgroup[csize] is * the position used for NUL characters. */ ecgroup[1] = NIL; for ( i = 2; i <= csize; ++i ) { ecgroup[i] = i - 1; nextecm[i - 1] = i; } nextecm[csize] = NIL; } else { /* Put everything in its own equivalence class. */ for ( i = 1; i <= csize; ++i ) { ecgroup[i] = i; nextecm[i] = BAD_SUBSCRIPT; /* to catch errors */ } } if ( ! use_stdout ) { FILE *prev_stdout; if ( ! did_outfilename ) { char *suffix; if ( C_plus_plus ) suffix = "cc"; else suffix = "c"; sprintf( outfile_path, outfile_template, prefix, suffix ); outfilename = outfile_path; } prev_stdout = freopen( outfilename, "w", stdout ); if ( prev_stdout == NULL ) lerrsf( _( "could not create %s" ), outfilename ); outfile_created = 1; } if ( skelname && (skelfile = fopen( skelname, "r" )) == NULL ) lerrsf( _( "can't open skeleton file %s" ), skelname ); if ( strcmp( prefix, "yy" ) ) { #define GEN_PREFIX(name) out_str3( "#define yy%s %s%s\n", name, prefix, name ) if ( C_plus_plus ) GEN_PREFIX( "FlexLexer" ); else { GEN_PREFIX( "_create_buffer" ); GEN_PREFIX( "_delete_buffer" ); GEN_PREFIX( "_scan_buffer" ); GEN_PREFIX( "_scan_string" ); GEN_PREFIX( "_scan_bytes" ); GEN_PREFIX( "_flex_debug" ); GEN_PREFIX( "_init_buffer" ); GEN_PREFIX( "_flush_buffer" ); GEN_PREFIX( "_load_buffer_state" ); GEN_PREFIX( "_switch_to_buffer" ); GEN_PREFIX( "in" ); GEN_PREFIX( "leng" ); GEN_PREFIX( "lex" ); GEN_PREFIX( "out" ); GEN_PREFIX( "restart" ); GEN_PREFIX( "text" ); if ( do_yylineno ) GEN_PREFIX( "lineno" ); } if ( do_yywrap ) GEN_PREFIX( "wrap" ); outn( "" ); } if ( did_outfilename ) line_directive_out( stdout, 0 ); skelout(); } /* flexend - terminate flex * * note * This routine does not return. */ void flexend( exit_status ) int exit_status; { int tblsiz; int unlink(); if ( skelfile != NULL ) { if ( ferror( skelfile ) ) lerrsf( _( "input error reading skeleton file %s" ), skelname ); else if ( fclose( skelfile ) ) lerrsf( _( "error closing skeleton file %s" ), skelname ); } if ( exit_status != 0 && outfile_created ) { if ( ferror( stdout ) ) lerrsf( _( "error writing output file %s" ), outfilename ); else if ( fclose( stdout ) ) lerrsf( _( "error closing output file %s" ), outfilename ); else if ( unlink( outfilename ) ) lerrsf( _( "error deleting output file %s" ), outfilename ); } if ( backing_up_report && backing_up_file ) { if ( num_backing_up == 0 ) fprintf( backing_up_file, _( "No backing up.\n" ) ); else if ( fullspd || fulltbl ) fprintf( backing_up_file, _( "%d backing up (non-accepting) states.\n" ), num_backing_up ); else fprintf( backing_up_file, _( "Compressed tables always back up.\n" ) ); if ( ferror( backing_up_file ) ) lerrsf( _( "error writing backup file %s" ), backing_name ); else if ( fclose( backing_up_file ) ) lerrsf( _( "error closing backup file %s" ), backing_name ); } if ( printstats ) { fprintf( stderr, _( "%s version %s usage statistics:\n" ), program_name, flex_version ); fprintf( stderr, _( " scanner options: -" ) ); if ( C_plus_plus ) putc( '+', stderr ); if ( backing_up_report ) putc( 'b', stderr ); if ( ddebug ) putc( 'd', stderr ); if ( caseins ) putc( 'i', stderr ); if ( lex_compat ) putc( 'l', stderr ); if ( performance_report > 0 ) putc( 'p', stderr ); if ( performance_report > 1 ) putc( 'p', stderr ); if ( spprdflt ) putc( 's', stderr ); if ( use_stdout ) putc( 't', stderr ); if ( printstats ) putc( 'v', stderr ); /* always true! */ if ( nowarn ) putc( 'w', stderr ); if ( interactive == false ) putc( 'B', stderr ); if ( interactive == true ) putc( 'I', stderr ); if ( ! gen_line_dirs ) putc( 'L', stderr ); if ( trace ) putc( 'T', stderr ); if ( csize == unspecified ) /* We encountered an error fairly early on, so csize * never got specified. Define it now, to prevent * bogus table sizes being written out below. */ csize = 256; if ( csize == 128 ) putc( '7', stderr ); else putc( '8', stderr ); fprintf( stderr, " -C" ); if ( long_align ) putc( 'a', stderr ); if ( fulltbl ) putc( 'f', stderr ); if ( fullspd ) putc( 'F', stderr ); if ( useecs ) putc( 'e', stderr ); if ( usemecs ) putc( 'm', stderr ); if ( use_read ) putc( 'r', stderr ); if ( did_outfilename ) fprintf( stderr, " -o%s", outfilename ); if ( skelname ) fprintf( stderr, " -S%s", skelname ); if ( strcmp( prefix, "yy" ) ) fprintf( stderr, " -P%s", prefix ); putc( '\n', stderr ); fprintf( stderr, _( " %d/%d NFA states\n" ), lastnfa, current_mns ); fprintf( stderr, _( " %d/%d DFA states (%d words)\n" ), lastdfa, current_max_dfas, totnst ); fprintf( stderr, _( " %d rules\n" ), num_rules + num_eof_rules - 1 /* - 1 for def. rule */ ); if ( num_backing_up == 0 ) fprintf( stderr, _( " No backing up\n" ) ); else if ( fullspd || fulltbl ) fprintf( stderr, _( " %d backing-up (non-accepting) states\n" ), num_backing_up ); else fprintf( stderr, _( " Compressed tables always back-up\n" ) ); if ( bol_needed ) fprintf( stderr, _( " Beginning-of-line patterns used\n" ) ); fprintf( stderr, _( " %d/%d start conditions\n" ), lastsc, current_max_scs ); fprintf( stderr, _( " %d epsilon states, %d double epsilon states\n" ), numeps, eps2 ); if ( lastccl == 0 ) fprintf( stderr, _( " no character classes\n" ) ); else fprintf( stderr, _( " %d/%d character classes needed %d/%d words of storage, %d reused\n" ), lastccl, current_maxccls, cclmap[lastccl] + ccllen[lastccl], current_max_ccl_tbl_size, cclreuse ); fprintf( stderr, _( " %d state/nextstate pairs created\n" ), numsnpairs ); fprintf( stderr, _( " %d/%d unique/duplicate transitions\n" ), numuniq, numdup ); if ( fulltbl ) { tblsiz = lastdfa * numecs; fprintf( stderr, _( " %d table entries\n" ), tblsiz ); } else { tblsiz = 2 * (lastdfa + numtemps) + 2 * tblend; fprintf( stderr, _( " %d/%d base-def entries created\n" ), lastdfa + numtemps, current_max_dfas ); fprintf( stderr, _( " %d/%d (peak %d) nxt-chk entries created\n" ), tblend, current_max_xpairs, peakpairs ); fprintf( stderr, _( " %d/%d (peak %d) template nxt-chk entries created\n" ), numtemps * nummecs, current_max_template_xpairs, numtemps * numecs ); fprintf( stderr, _( " %d empty table entries\n" ), nummt ); fprintf( stderr, _( " %d protos created\n" ), numprots ); fprintf( stderr, _( " %d templates created, %d uses\n" ), numtemps, tmpuses ); } if ( useecs ) { tblsiz = tblsiz + csize; fprintf( stderr, _( " %d/%d equivalence classes created\n" ), numecs, csize ); } if ( usemecs ) { tblsiz = tblsiz + numecs; fprintf( stderr, _( " %d/%d meta-equivalence classes created\n" ), nummecs, csize ); } fprintf( stderr, _( " %d (%d saved) hash collisions, %d DFAs equal\n" ), hshcol, hshsave, dfaeql ); fprintf( stderr, _( " %d sets of reallocations needed\n" ), num_reallocs ); fprintf( stderr, _( " %d total table entries needed\n" ), tblsiz ); } exit( exit_status ); } /* flexinit - initialize flex */ void flexinit( argc, argv ) int argc; char **argv; { int i, sawcmpflag; char *arg, *mktemp(); printstats = syntaxerror = trace = spprdflt = caseins = false; lex_compat = C_plus_plus = backing_up_report = ddebug = fulltbl = false; fullspd = long_align = nowarn = yymore_used = continued_action = false; do_yylineno = yytext_is_array = in_rule = reject = do_stdinit = false; yymore_really_used = reject_really_used = unspecified; interactive = csize = unspecified; do_yywrap = gen_line_dirs = usemecs = useecs = true; performance_report = 0; did_outfilename = 0; prefix = "yy"; yyclass = 0; use_read = use_stdout = false; sawcmpflag = false; /* Initialize dynamic array for holding the rule actions. */ action_size = 2048; /* default size of action array in bytes */ action_array = allocate_character_array( action_size ); defs1_offset = prolog_offset = action_offset = action_index = 0; action_array[0] = '\0'; program_name = argv[0]; if ( program_name[0] != '\0' && program_name[strlen( program_name ) - 1] == '+' ) C_plus_plus = true; /* read flags */ for ( --argc, ++argv; argc ; --argc, ++argv ) { arg = argv[0]; if ( arg[0] != '-' || arg[1] == '\0' ) break; if ( arg[1] == '-' ) { /* --option */ if ( ! strcmp( arg, "--help" ) ) arg = "-h"; else if ( ! strcmp( arg, "--version" ) ) arg = "-V"; else if ( ! strcmp( arg, "--" ) ) { /* end of options */ --argc; ++argv; break; } } for ( i = 1; arg[i] != '\0'; ++i ) switch ( arg[i] ) { case '+': C_plus_plus = true; break; case 'B': interactive = false; break; case 'b': backing_up_report = true; break; case 'c': break; case 'C': if ( i != 1 ) flexerror( _( "-C flag must be given separately" ) ); if ( ! sawcmpflag ) { useecs = false; usemecs = false; fulltbl = false; sawcmpflag = true; } for ( ++i; arg[i] != '\0'; ++i ) switch ( arg[i] ) { case 'a': long_align = true; break; case 'e': useecs = true; break; case 'F': fullspd = true; break; case 'f': fulltbl = true; break; case 'm': usemecs = true; break; case 'r': use_read = true; break; default: lerrif( _( "unknown -C option '%c'" ), (int) arg[i] ); break; } goto get_next_arg; case 'd': ddebug = true; break; case 'f': useecs = usemecs = false; use_read = fulltbl = true; break; case 'F': useecs = usemecs = false; use_read = fullspd = true; break; case '?': case 'h': usage(); exit( 0 ); case 'I': interactive = true; break; case 'i': caseins = true; break; case 'l': lex_compat = true; break; case 'L': gen_line_dirs = false; break; case 'n': /* Stupid do-nothing deprecated * option. */ break; case 'o': if ( i != 1 ) flexerror( _( "-o flag must be given separately" ) ); outfilename = arg + i + 1; did_outfilename = 1; goto get_next_arg; case 'P': if ( i != 1 ) flexerror( _( "-P flag must be given separately" ) ); prefix = arg + i + 1; goto get_next_arg; case 'p': ++performance_report; break; case 'S': if ( i != 1 ) flexerror( _( "-S flag must be given separately" ) ); skelname = arg + i + 1; goto get_next_arg; case 's': spprdflt = true; break; case 't': use_stdout = true; break; case 'T': trace = true; break; case 'v': printstats = true; break; case 'V': printf( _( "%s version %s\n" ), program_name, flex_version ); exit( 0 ); case 'w': nowarn = true; break; case '7': csize = 128; break; case '8': csize = CSIZE; break; default: fprintf( stderr, _( "%s: unknown flag '%c'. For usage, try\n\t%s --help\n" ), program_name, (int) arg[i], program_name ); exit( 1 ); } /* Used by -C, -S, -o, and -P flags in lieu of a "continue 2" * control. */ get_next_arg: ; } num_input_files = argc; input_files = argv; set_input_file( num_input_files > 0 ? input_files[0] : NULL ); lastccl = lastsc = lastdfa = lastnfa = 0; num_rules = num_eof_rules = default_rule = 0; numas = numsnpairs = tmpuses = 0; numecs = numeps = eps2 = num_reallocs = hshcol = dfaeql = totnst = 0; numuniq = numdup = hshsave = eofseen = datapos = dataline = 0; num_backing_up = onesp = numprots = 0; variable_trailing_context_rules = bol_needed = false; out_linenum = linenum = sectnum = 1; firstprot = NIL; /* Used in mkprot() so that the first proto goes in slot 1 * of the proto queue. */ lastprot = 1; set_up_initial_allocations(); } /* readin - read in the rules section of the input file(s) */ void readin() { static char yy_stdinit[] = "FILE *yyin = stdin, *yyout = stdout;"; static char yy_nostdinit[] = "FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;"; line_directive_out( (FILE *) 0, 1 ); if ( yyparse() ) { pinpoint_message( _( "fatal parse error" ) ); flexend( 1 ); } if ( syntaxerror ) flexend( 1 ); if ( backing_up_report ) { backing_up_file = fopen( backing_name, "w" ); if ( backing_up_file == NULL ) lerrsf( _( "could not create backing-up info file %s" ), backing_name ); } else backing_up_file = NULL; if ( yymore_really_used == true ) yymore_used = true; else if ( yymore_really_used == false ) yymore_used = false; if ( reject_really_used == true ) reject = true; else if ( reject_really_used == false ) reject = false; if ( performance_report > 0 ) { if ( lex_compat ) { fprintf( stderr, _( "-l AT&T lex compatibility option entails a large performance penalty\n" ) ); fprintf( stderr, _( " and may be the actual source of other reported performance penalties\n" ) ); } else if ( do_yylineno ) { fprintf( stderr, _( "%%option yylineno entails a large performance penalty\n" ) ); } if ( performance_report > 1 ) { if ( interactive ) fprintf( stderr, _( "-I (interactive) entails a minor performance penalty\n" ) ); if ( yymore_used ) fprintf( stderr, _( "yymore() entails a minor performance penalty\n" ) ); } if ( reject ) fprintf( stderr, _( "REJECT entails a large performance penalty\n" ) ); if ( variable_trailing_context_rules ) fprintf( stderr, _( "Variable trailing context rules entail a large performance penalty\n" ) ); } if ( reject ) real_reject = true; if ( variable_trailing_context_rules ) reject = true; if ( (fulltbl || fullspd) && reject ) { if ( real_reject ) flexerror( _( "REJECT cannot be used with -f or -F" ) ); else if ( do_yylineno ) flexerror( _( "%option yylineno cannot be used with -f or -F" ) ); else flexerror( _( "variable trailing context rules cannot be used with -f or -F" ) ); } if ( reject ) outn( "\n#define YY_USES_REJECT" ); if ( ! do_yywrap ) { outn( "\n#define yywrap() 1" ); outn( "#define YY_SKIP_YYWRAP" ); } if ( ddebug ) outn( "\n#define FLEX_DEBUG" ); if ( csize == 256 ) outn( "typedef unsigned char YY_CHAR;" ); else outn( "typedef char YY_CHAR;" ); if ( C_plus_plus ) { outn( "#define yytext_ptr yytext" ); if ( interactive ) outn( "#define YY_INTERACTIVE" ); } else { if ( do_stdinit ) { outn( "#ifdef VMS" ); outn( "#ifndef __VMS_POSIX" ); outn( yy_nostdinit ); outn( "#else" ); outn( yy_stdinit ); outn( "#endif" ); outn( "#else" ); outn( yy_stdinit ); outn( "#endif" ); } else outn( yy_nostdinit ); } if ( fullspd ) outn( "typedef yyconst struct yy_trans_info *yy_state_type;" ); else if ( ! C_plus_plus ) outn( "typedef int yy_state_type;" ); if ( ddebug ) outn( "\n#define FLEX_DEBUG" ); if ( lex_compat ) outn( "#define YY_FLEX_LEX_COMPAT" ); if ( do_yylineno && ! C_plus_plus ) { outn( "extern int yylineno;" ); outn( "int yylineno = 1;" ); } if ( C_plus_plus ) { outn( "\n#include " ); if ( yyclass ) { outn( "int yyFlexLexer::yylex()" ); outn( "\t{" ); outn( "\tLexerError( \"yyFlexLexer::yylex invoked but %option yyclass used\" );" ); outn( "\treturn 0;" ); outn( "\t}" ); out_str( "\n#define YY_DECL int %s::yylex()\n", yyclass ); } } else { if ( yytext_is_array ) outn( "extern char yytext[];\n" ); else { outn( "extern char *yytext;" ); outn( "#define yytext_ptr yytext" ); } if ( yyclass ) flexerror( _( "%option yyclass only meaningful for C++ scanners" ) ); } if ( useecs ) numecs = cre8ecs( nextecm, ecgroup, csize ); else numecs = csize; /* Now map the equivalence class for NUL to its expected place. */ ecgroup[0] = ecgroup[csize]; NUL_ec = ABS( ecgroup[0] ); if ( useecs ) ccl2ecl(); } /* set_up_initial_allocations - allocate memory for internal tables */ void set_up_initial_allocations() { current_mns = INITIAL_MNS; firstst = allocate_integer_array( current_mns ); lastst = allocate_integer_array( current_mns ); finalst = allocate_integer_array( current_mns ); transchar = allocate_integer_array( current_mns ); trans1 = allocate_integer_array( current_mns ); trans2 = allocate_integer_array( current_mns ); accptnum = allocate_integer_array( current_mns ); assoc_rule = allocate_integer_array( current_mns ); state_type = allocate_integer_array( current_mns ); current_max_rules = INITIAL_MAX_RULES; rule_type = allocate_integer_array( current_max_rules ); rule_linenum = allocate_integer_array( current_max_rules ); rule_useful = allocate_integer_array( current_max_rules ); current_max_scs = INITIAL_MAX_SCS; scset = allocate_integer_array( current_max_scs ); scbol = allocate_integer_array( current_max_scs ); scxclu = allocate_integer_array( current_max_scs ); sceof = allocate_integer_array( current_max_scs ); scname = allocate_char_ptr_array( current_max_scs ); current_maxccls = INITIAL_MAX_CCLS; cclmap = allocate_integer_array( current_maxccls ); ccllen = allocate_integer_array( current_maxccls ); cclng = allocate_integer_array( current_maxccls ); current_max_ccl_tbl_size = INITIAL_MAX_CCL_TBL_SIZE; ccltbl = allocate_Character_array( current_max_ccl_tbl_size ); current_max_dfa_size = INITIAL_MAX_DFA_SIZE; current_max_xpairs = INITIAL_MAX_XPAIRS; nxt = allocate_integer_array( current_max_xpairs ); chk = allocate_integer_array( current_max_xpairs ); current_max_template_xpairs = INITIAL_MAX_TEMPLATE_XPAIRS; tnxt = allocate_integer_array( current_max_template_xpairs ); current_max_dfas = INITIAL_MAX_DFAS; base = allocate_integer_array( current_max_dfas ); def = allocate_integer_array( current_max_dfas ); dfasiz = allocate_integer_array( current_max_dfas ); accsiz = allocate_integer_array( current_max_dfas ); dhash = allocate_integer_array( current_max_dfas ); dss = allocate_int_ptr_array( current_max_dfas ); dfaacc = allocate_dfaacc_union( current_max_dfas ); nultrans = (int *) 0; } void usage() { FILE *f = stdout; fprintf( f, _( "%s [-bcdfhilnpstvwBFILTV78+? -C[aefFmr] -ooutput -Pprefix -Sskeleton]\n" ), program_name ); fprintf( f, _( "\t[--help --version] [file ...]\n" ) ); fprintf( f, _( "\t-b generate backing-up information to %s\n" ), backing_name ); fprintf( f, _( "\t-c do-nothing POSIX option\n" ) ); fprintf( f, _( "\t-d turn on debug mode in generated scanner\n" ) ); fprintf( f, _( "\t-f generate fast, large scanner\n" ) ); fprintf( f, _( "\t-h produce this help message\n" ) ); fprintf( f, _( "\t-i generate case-insensitive scanner\n" ) ); fprintf( f, _( "\t-l maximal compatibility with original lex\n" ) ); fprintf( f, _( "\t-n do-nothing POSIX option\n" ) ); fprintf( f, _( "\t-p generate performance report to stderr\n" ) ); fprintf( f, _( "\t-s suppress default rule to ECHO unmatched text\n" ) ); if ( ! did_outfilename ) { sprintf( outfile_path, outfile_template, prefix, C_plus_plus ? "cc" : "c" ); outfilename = outfile_path; } fprintf( f, _( "\t-t write generated scanner on stdout instead of %s\n" ), outfilename ); fprintf( f, _( "\t-v write summary of scanner statistics to f\n" ) ); fprintf( f, _( "\t-w do not generate warnings\n" ) ); fprintf( f, _( "\t-B generate batch scanner (opposite of -I)\n" ) ); fprintf( f, _( "\t-F use alternative fast scanner representation\n" ) ); fprintf( f, _( "\t-I generate interactive scanner (opposite of -B)\n" ) ); fprintf( f, _( "\t-L suppress #line directives in scanner\n" ) ); fprintf( f, _( "\t-T %s should run in trace mode\n" ), program_name ); fprintf( f, _( "\t-V report %s version\n" ), program_name ); fprintf( f, _( "\t-7 generate 7-bit scanner\n" ) ); fprintf( f, _( "\t-8 generate 8-bit scanner\n" ) ); fprintf( f, _( "\t-+ generate C++ scanner class\n" ) ); fprintf( f, _( "\t-? produce this help message\n" ) ); fprintf( f, _( "\t-C specify degree of table compression (default is -Cem):\n" ) ); fprintf( f, _( "\t\t-Ca trade off larger tables for better memory alignment\n" ) ); fprintf( f, _( "\t\t-Ce construct equivalence classes\n" ) ); fprintf( f, _( "\t\t-Cf do not compress scanner tables; use -f representation\n" ) ); fprintf( f, _( "\t\t-CF do not compress scanner tables; use -F representation\n" ) ); fprintf( f, _( "\t\t-Cm construct meta-equivalence classes\n" ) ); fprintf( f, _( "\t\t-Cr use read() instead of stdio for scanner input\n" ) ); fprintf( f, _( "\t-o specify output filename\n" ) ); fprintf( f, _( "\t-P specify scanner prefix other than \"yy\"\n" ) ); fprintf( f, _( "\t-S specify skeleton file\n" ) ); fprintf( f, _( "\t--help produce this help message\n" ) ); fprintf( f, _( "\t--version report %s version\n" ), program_name ); }