diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 1857 |
1 files changed, 1857 insertions, 0 deletions
@@ -0,0 +1,1857 @@ +/* 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. */ + +/* This file is part of flex. */ + +/* Redistribution and use in source and binary forms, with or without */ +/* modification, are permitted provided that the following conditions */ +/* are met: */ + +/* 1. Redistributions of source code must retain the above copyright */ +/* notice, this list of conditions and the following disclaimer. */ +/* 2. Redistributions in binary form must reproduce the above copyright */ +/* notice, this list of conditions and the following disclaimer in the */ +/* documentation and/or other materials provided with the distribution. */ + +/* 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. */ + + +#include "flexdef.h" +#include "version.h" +#include "options.h" +#include "tables.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)); +static char *basename2 PROTO ((char *path, int should_strip_ext)); + + +/* these globals are all defined and commented in flexdef.h */ +int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, spprdflt; +int interactive, lex_compat, posix_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 reentrant, bison_bridge_lval, bison_bridge_lloc; +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, *headerfilename = NULL; +int did_outfilename; +char *prefix, *yyclass, *extra_type = NULL; +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 maximum_mns, 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; +jmp_buf flex_main_jmp_buf; +bool *rule_has_nl, *ccl_has_nl; +int nlch = '\n'; +bool ansi_func_defs, ansi_func_protos; + +bool tablesext, tablesverify, gentables; +char *tablesfilename=0,*tablesname=0; +struct yytbl_writer tableswr; + +/* 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"; +static char *tablesfile_template = "lex.%s.tables"; +#else +static char *outfile_template = "lex%s.%s"; +static char *backing_name = "lex.bck"; +static char *tablesfile_template = "lex%s.tbl"; +#endif + +#ifdef MS_DOS +extern unsigned _stklen = 16384; +#endif + +/* From scan.l */ +extern FILE* yyout; + +static char outfile_path[MAXLINE]; +static int outfile_created = 0; +static char *skelname = NULL; +static int _stdout_closed = 0; /* flag to prevent double-fclose() on stdout. */ +const char *escaped_qstart = "[[]]M4_YY_NOOP[M4_YY_NOOP[M4_YY_NOOP[[]]"; +const char *escaped_qend = "[[]]M4_YY_NOOP]M4_YY_NOOP]M4_YY_NOOP[[]]"; + +/* For debugging. The max number of filters to apply to skeleton. */ +static int preproc_level = 1000; + +int flex_main PROTO ((int argc, char *argv[])); +int main PROTO ((int argc, char *argv[])); + +int flex_main (argc, argv) + int argc; + char *argv[]; +{ + int i, exit_status, child_status; + + /* Set a longjmp target. Yes, I know it's a hack, but it gets worse: The + * return value of setjmp, if non-zero, is the desired exit code PLUS ONE. + * For example, if you want 'main' to return with code '2', then call + * longjmp() with an argument of 3. This is because it is invalid to + * specify a value of 0 to longjmp. FLEX_EXIT(n) should be used instead of + * exit(n); + */ + exit_status = setjmp (flex_main_jmp_buf); + if (exit_status){ + if (stdout && !_stdout_closed && !ferror(stdout)){ + fflush(stdout); + fclose(stdout); + } + while (wait(&child_status) > 0){ + if (!WIFEXITED (child_status) + || WEXITSTATUS (child_status) != 0){ + /* report an error of a child + */ + if( exit_status <= 1 ) + exit_status = 2; + + } + } + return exit_status - 1; + } + + 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 */ +} + +/* Wrapper around flex_main, so flex_main can be built as a library. */ +int main (argc, argv) + int argc; + char *argv[]; +{ +#if ENABLE_NLS +#if HAVE_LOCALE_H + setlocale (LC_MESSAGES, ""); + setlocale (LC_CTYPE, ""); + textdomain (PACKAGE); + bindtextdomain (PACKAGE, LOCALEDIR); +#endif +#endif + + return flex_main (argc, argv); +} + +/* check_options - check user-specified options */ + +void check_options () +{ + int i; + const char * m4 = NULL; + + 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")); + + if (reentrant || bison_bridge_lval) + flexerror (_ + ("Can't use --reentrant or --bison-bridge 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 0 + /* This makes no sense whatsoever. I'm removing it. */ + if (do_yylineno) + /* This should really be "maintain_backup_tables = true" */ + reject_really_used = true; +#endif + + 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 (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 (C_plus_plus && (reentrant)) + flexerror (_("Options -+ and --reentrant are mutually exclusive.")); + + if (C_plus_plus && bison_bridge_lval) + flexerror (_("bison bridge not supported for the C++ scanner.")); + + + 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 (!ansi_func_defs) + buf_m4_define( &m4defs_buf, "M4_YY_NO_ANSI_FUNC_DEFS", NULL); + + if (!ansi_func_protos) + buf_m4_define( &m4defs_buf, "M4_YY_NO_ANSI_FUNC_PROTOS", NULL); + + if (extra_type) + buf_m4_define( &m4defs_buf, "M4_EXTRA_TYPE_DEFS", extra_type); + + if (!use_stdout) { + FILE *prev_stdout; + + if (!did_outfilename) { + char *suffix; + + if (C_plus_plus) + suffix = "cc"; + else + suffix = "c"; + + snprintf (outfile_path, sizeof(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; + } + + + /* Setup the filter chain. */ + output_chain = filter_create_int(NULL, filter_tee_header, headerfilename); + if ( !(m4 = getenv("M4"))) + m4 = M4; + filter_create_ext(output_chain, m4, "-P", 0); + filter_create_int(output_chain, filter_fix_linedirs, NULL); + + /* For debugging, only run the requested number of filters. */ + if (preproc_level > 0) { + filter_truncate(output_chain, preproc_level); + filter_apply_chain(output_chain); + } + yyout = stdout; + + + /* always generate the tablesverify flag. */ + buf_m4_define (&m4defs_buf, "M4_YY_TABLES_VERIFY", tablesverify ? "1" : "0"); + if (tablesext) + gentables = false; + + if (tablesverify) + /* force generation of C tables. */ + gentables = true; + + + if (tablesext) { + FILE *tablesout; + struct yytbl_hdr hdr; + char *pname = 0; + int nbytes = 0; + + buf_m4_define (&m4defs_buf, "M4_YY_TABLES_EXTERNAL", NULL); + + if (!tablesfilename) { + nbytes = strlen (prefix) + strlen (tablesfile_template) + 2; + tablesfilename = pname = (char *) calloc (nbytes, 1); + snprintf (pname, nbytes, tablesfile_template, prefix); + } + + if ((tablesout = fopen (tablesfilename, "w")) == NULL) + lerrsf (_("could not create %s"), tablesfilename); + if (pname) + free (pname); + tablesfilename = 0; + + yytbl_writer_init (&tableswr, tablesout); + + nbytes = strlen (prefix) + strlen ("tables") + 2; + tablesname = (char *) calloc (nbytes, 1); + snprintf (tablesname, nbytes, "%stables", prefix); + yytbl_hdr_init (&hdr, flex_version, tablesname); + + if (yytbl_hdr_fwrite (&tableswr, &hdr) <= 0) + flexerror (_("could not write tables header")); + } + + if (skelname && (skelfile = fopen (skelname, "r")) == NULL) + lerrsf (_("can't open skeleton file %s"), skelname); + + if (reentrant) { + buf_m4_define (&m4defs_buf, "M4_YY_REENTRANT", NULL); + if (yytext_is_array) + buf_m4_define (&m4defs_buf, "M4_YY_TEXT_IS_ARRAY", NULL); + } + + if ( bison_bridge_lval) + buf_m4_define (&m4defs_buf, "M4_YY_BISON_LVAL", NULL); + + if ( bison_bridge_lloc) + buf_m4_define (&m4defs_buf, "<M4_YY_BISON_LLOC>", NULL); + + buf_m4_define(&m4defs_buf, "M4_YY_PREFIX", prefix); + + if (did_outfilename) + line_directive_out (stdout, 0); + + if (do_yylineno) + buf_m4_define (&m4defs_buf, "M4_YY_USE_LINENO", NULL); + + /* Create the alignment type. */ + buf_strdefine (&userdef_buf, "YY_INT_ALIGNED", + long_align ? "long int" : "short int"); + + /* Define the start condition macros. */ + { + struct Buf tmpbuf; + buf_init(&tmpbuf, sizeof(char)); + for (i = 1; i <= lastsc; i++) { + char *str, *fmt = "#define %s %d\n"; + size_t strsz; + + str = (char*)flex_alloc(strsz = strlen(fmt) + strlen(scname[i]) + (int)(1 + log10(i)) + 2); + snprintf(str, strsz, fmt, scname[i], i - 1); + buf_strappend(&tmpbuf, str); + free(str); + } + buf_m4_define(&m4defs_buf, "M4_YY_SC_DEFS", tmpbuf.elts); + buf_destroy(&tmpbuf); + } + + /* This is where we begin writing to the file. */ + + /* Dump the %top code. */ + if( top_buf.elts) + outn((char*) top_buf.elts); + + /* Dump the m4 definitions. */ + buf_print_strings(&m4defs_buf, stdout); + m4defs_buf.nelts = 0; /* memory leak here. */ + + /* Place a bogus line directive, it will be fixed in the filter. */ + outn("#line 0 \"M4_YY_OUTFILE_NAME\"\n"); + + /* Dump the user defined preproc directives. */ + if (userdef_buf.elts) + outn ((char *) (userdef_buf.elts)); + + skelout (); + /* %% [1.0] */ +} + +/* flexend - terminate flex + * + * note + * This routine does not return. + */ + +void flexend (exit_status) + int exit_status; + +{ + static int called_before = -1; /* prevent infinite recursion. */ + int tblsiz; + + if (++called_before) + FLEX_EXIT (exit_status); + + 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 0 + fprintf (header_out, + "#ifdef YY_HEADER_EXPORT_START_CONDITIONS\n"); + fprintf (header_out, + "/* Beware! Start conditions are not prefixed. */\n"); + + /* Special case for "INITIAL" */ + fprintf (header_out, + "#undef INITIAL\n#define INITIAL 0\n"); + for (i = 2; i <= lastsc; i++) + fprintf (header_out, "#define %s %d\n", scname[i], i - 1); + fprintf (header_out, + "#endif /* YY_HEADER_EXPORT_START_CONDITIONS */\n\n"); + + /* Kill ALL flex-related macros. This is so the user + * can #include more than one generated header file. */ + fprintf (header_out, "#ifndef YY_HEADER_NO_UNDEFS\n"); + fprintf (header_out, + "/* Undefine all internal macros, etc., that do no belong in the header. */\n\n"); + + { + const char * undef_list[] = { + + "BEGIN", + "ECHO", + "EOB_ACT_CONTINUE_SCAN", + "EOB_ACT_END_OF_FILE", + "EOB_ACT_LAST_MATCH", + "FLEX_SCANNER", + "FLEX_STD", + "REJECT", + "YYFARGS0", + "YYFARGS1", + "YYFARGS2", + "YYFARGS3", + "YYLMAX", + "YYSTATE", + "YY_AT_BOL", + "YY_BREAK", + "YY_BUFFER_EOF_PENDING", + "YY_BUFFER_NEW", + "YY_BUFFER_NORMAL", + "YY_BUF_SIZE", + "M4_YY_CALL_LAST_ARG", + "M4_YY_CALL_ONLY_ARG", + "YY_CURRENT_BUFFER", + "YY_DECL", + "M4_YY_DECL_LAST_ARG", + "M4_YY_DEF_LAST_ARG", + "M4_YY_DEF_ONLY_ARG", + "YY_DO_BEFORE_ACTION", + "YY_END_OF_BUFFER", + "YY_END_OF_BUFFER_CHAR", + "YY_EXIT_FAILURE", + "YY_EXTRA_TYPE", + "YY_FATAL_ERROR", + "YY_FLEX_DEFINED_ECHO", + "YY_FLEX_LEX_COMPAT", + "YY_FLEX_MAJOR_VERSION", + "YY_FLEX_MINOR_VERSION", + "YY_FLEX_SUBMINOR_VERSION", + "YY_FLUSH_BUFFER", + "YY_G", + "YY_INPUT", + "YY_INTERACTIVE", + "YY_INT_ALIGNED", + "YY_LAST_ARG", + "YY_LESS_LINENO", + "YY_LEX_ARGS", + "YY_LEX_DECLARATION", + "YY_LEX_PROTO", + "YY_MAIN", + "YY_MORE_ADJ", + "YY_NEED_STRLEN", + "YY_NEW_FILE", + "YY_NULL", + "YY_NUM_RULES", + "YY_ONLY_ARG", + "YY_PARAMS", + "YY_PROTO", + "M4_YY_PROTO_LAST_ARG", + "M4_YY_PROTO_ONLY_ARG void", + "YY_READ_BUF_SIZE", + "YY_REENTRANT", + "YY_RESTORE_YY_MORE_OFFSET", + "YY_RULE_SETUP", + "YY_SC_TO_UI", + "YY_SKIP_YYWRAP", + "YY_START", + "YY_START_STACK_INCR", + "YY_STATE_EOF", + "YY_STDINIT", + "YY_TRAILING_HEAD_MASK", + "YY_TRAILING_MASK", + "YY_USER_ACTION", + "YY_USE_CONST", + "YY_USE_PROTOS", + "unput", + "yyTABLES_NAME", + "yy_create_buffer", + "yy_delete_buffer", + "yy_flex_debug", + "yy_flush_buffer", + "yy_init_buffer", + "yy_load_buffer_state", + "yy_new_buffer", + "yy_scan_buffer", + "yy_scan_bytes", + "yy_scan_string", + "yy_set_bol", + "yy_set_interactive", + "yy_switch_to_buffer", + "yypush_buffer_state", + "yypop_buffer_state", + "yyensure_buffer_stack", + "yyalloc", + "yyconst", + "yyextra", + "yyfree", + "yyget_debug", + "yyget_extra", + "yyget_in", + "yyget_leng", + "yyget_lineno", + "yyget_lloc", + "yyget_lval", + "yyget_out", + "yyget_text", + "yyin", + "yyleng", + "yyless", + "yylex", + "yylex_destroy", + "yylex_init", + "yylex_init_extra", + "yylineno", + "yylloc", + "yylval", + "yymore", + "yyout", + "yyrealloc", + "yyrestart", + "yyset_debug", + "yyset_extra", + "yyset_in", + "yyset_lineno", + "yyset_lloc", + "yyset_lval", + "yyset_out", + "yytables_destroy", + "yytables_fload", + "yyterminate", + "yytext", + "yytext_ptr", + "yywrap", + + /* must be null-terminated */ + NULL}; + + + for (i=0; undef_list[i] != NULL; i++) + fprintf (header_out, "#undef %s\n", undef_list[i]); + } + + /* undef any of the auto-generated symbols. */ + for (i = 0; i < defs_buf.nelts; i++) { + + /* don't undef start conditions */ + if (sclookup (((char **) defs_buf.elts)[i]) > 0) + continue; + fprintf (header_out, "#undef %s\n", + ((char **) defs_buf.elts)[i]); + } + + fprintf (header_out, + "#endif /* !YY_HEADER_NO_UNDEFS */\n"); + fprintf (header_out, "\n"); + fprintf (header_out, "#undef %sIN_HEADER\n", prefix); + fprintf (header_out, "#endif /* %sHEADER_H */\n", prefix); + + if (ferror (header_out)) + lerrsf (_("error creating header file %s"), + headerfilename); + fflush (header_out); + fclose (header_out); +#endif + + if (exit_status != 0 && outfile_created) { + if (ferror (stdout)) + lerrsf (_("error writing output file %s"), + outfilename); + + else if ((_stdout_closed = 1) && 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 (sf_case_ins()) + putc ('i', stderr); + if (lex_compat) + putc ('l', stderr); + if (posix_compat) + putc ('X', stderr); + if (performance_report > 0) + putc ('p', stderr); + if (performance_report > 1) + putc ('p', stderr); + if (spprdflt) + putc ('s', stderr); + if (reentrant) + fputs ("--reentrant", stderr); + if (bison_bridge_lval) + fputs ("--bison-bridge", stderr); + if (bison_bridge_lloc) + fputs ("--bison-locations", 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); + } + + FLEX_EXIT (exit_status); +} + + +/* flexinit - initialize flex */ + +void flexinit (argc, argv) + int argc; + char **argv; +{ + int i, sawcmpflag, rv, optind; + char *arg; + scanopt_t sopt; + + printstats = syntaxerror = trace = spprdflt = false; + lex_compat = posix_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; + reentrant = bison_bridge_lval = bison_bridge_lloc = false; + performance_report = 0; + did_outfilename = 0; + prefix = "yy"; + yyclass = 0; + use_read = use_stdout = false; + tablesext = tablesverify = false; + gentables = true; + tablesfilename = tablesname = NULL; + ansi_func_defs = ansi_func_protos = true; + + 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'; + + /* Initialize any buffers. */ + buf_init (&userdef_buf, sizeof (char)); /* one long string */ + buf_init (&defs_buf, sizeof (char *)); /* list of strings */ + buf_init (&yydmap_buf, sizeof (char)); /* one long string */ + buf_init (&top_buf, sizeof (char)); /* one long string */ + + { + const char * m4defs_init_str[] = {"m4_changequote\n", + "m4_changequote([[, ]])\n"}; + buf_init (&m4defs_buf, sizeof (char *)); + buf_append (&m4defs_buf, &m4defs_init_str, 2); + } + + sf_init (); + + /* initialize regex lib */ + flex_init_regex(); + + /* Enable C++ if program name ends with '+'. */ + program_name = basename2 (argv[0], 0); + + if (program_name[0] != '\0' && + program_name[strlen (program_name) - 1] == '+') + C_plus_plus = true; + + /* read flags */ + sopt = scanopt_init (flexopts, argc, argv, 0); + if (!sopt) { + /* This will only happen when flexopts array is altered. */ + fprintf (stderr, + _("Internal error. flexopts are malformed.\n")); + FLEX_EXIT (1); + } + + while ((rv = scanopt (sopt, &arg, &optind)) != 0) { + + if (rv < 0) { + /* Scanopt has already printed an option-specific error message. */ + fprintf (stderr, + _ + ("Try `%s --help' for more information.\n"), + program_name); + FLEX_EXIT (1); + } + + switch ((enum flexopt_flag_t) rv) { + case OPT_CPLUSPLUS: + C_plus_plus = true; + break; + + case OPT_BATCH: + interactive = false; + break; + + case OPT_BACKUP: + backing_up_report = true; + break; + + case OPT_DONOTHING: + break; + + case OPT_COMPRESSION: + if (!sawcmpflag) { + useecs = false; + usemecs = false; + fulltbl = false; + sawcmpflag = true; + } + + for (i = 0; arg && 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; + } + break; + + case OPT_DEBUG: + ddebug = true; + break; + + case OPT_NO_DEBUG: + ddebug = false; + break; + + case OPT_FULL: + useecs = usemecs = false; + use_read = fulltbl = true; + break; + + case OPT_FAST: + useecs = usemecs = false; + use_read = fullspd = true; + break; + + case OPT_HELP: + usage (); + FLEX_EXIT (0); + + case OPT_INTERACTIVE: + interactive = true; + break; + + case OPT_CASE_INSENSITIVE: + sf_set_case_ins(true); + break; + + case OPT_LEX_COMPAT: + lex_compat = true; + break; + + case OPT_POSIX_COMPAT: + posix_compat = true; + break; + + case OPT_PREPROC_LEVEL: + preproc_level = strtol(arg,NULL,0); + break; + + case OPT_MAIN: + buf_strdefine (&userdef_buf, "YY_MAIN", "1"); + do_yywrap = false; + break; + + case OPT_NO_MAIN: + buf_strdefine (&userdef_buf, "YY_MAIN", "0"); + break; + + case OPT_NO_LINE: + gen_line_dirs = false; + break; + + case OPT_OUTFILE: + outfilename = arg; + did_outfilename = 1; + break; + + case OPT_PREFIX: + prefix = arg; + break; + + case OPT_PERF_REPORT: + ++performance_report; + break; + + case OPT_BISON_BRIDGE: + bison_bridge_lval = true; + break; + + case OPT_BISON_BRIDGE_LOCATIONS: + bison_bridge_lval = bison_bridge_lloc = true; + break; + + case OPT_REENTRANT: + reentrant = true; + break; + + case OPT_NO_REENTRANT: + reentrant = false; + break; + + case OPT_SKEL: + skelname = arg; + break; + + case OPT_DEFAULT: + spprdflt = false; + break; + + case OPT_NO_DEFAULT: + spprdflt = true; + break; + + case OPT_STDOUT: + use_stdout = true; + break; + + case OPT_NO_UNISTD_H: + //buf_strdefine (&userdef_buf, "YY_NO_UNISTD_H", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_UNISTD_H",0); + break; + + case OPT_TABLES_FILE: + tablesext = true; + tablesfilename = arg; + break; + + case OPT_TABLES_VERIFY: + tablesverify = true; + break; + + case OPT_TRACE: + trace = true; + break; + + case OPT_VERBOSE: + printstats = true; + break; + + case OPT_VERSION: + printf (_("%s %s\n"), program_name, flex_version); + FLEX_EXIT (0); + + case OPT_WARN: + nowarn = false; + break; + + case OPT_NO_WARN: + nowarn = true; + break; + + case OPT_7BIT: + csize = 128; + break; + + case OPT_8BIT: + csize = CSIZE; + break; + + case OPT_ALIGN: + long_align = true; + break; + + case OPT_NO_ALIGN: + long_align = false; + break; + + case OPT_ALWAYS_INTERACTIVE: + buf_m4_define (&m4defs_buf, "M4_YY_ALWAYS_INTERACTIVE", 0); + break; + + case OPT_NEVER_INTERACTIVE: + buf_m4_define( &m4defs_buf, "M4_YY_NEVER_INTERACTIVE", 0); + break; + + case OPT_ARRAY: + yytext_is_array = true; + break; + + case OPT_POINTER: + yytext_is_array = false; + break; + + case OPT_ECS: + useecs = true; + break; + + case OPT_NO_ECS: + useecs = false; + break; + + case OPT_HEADER_FILE: + headerfilename = arg; + break; + + case OPT_META_ECS: + usemecs = true; + break; + + case OPT_NO_META_ECS: + usemecs = false; + break; + + case OPT_PREPROCDEFINE: + { + /* arg is "symbol" or "symbol=definition". */ + char *def; + + for (def = arg; + *def != '\0' && *def != '='; ++def) ; + + buf_strappend (&userdef_buf, "#define "); + if (*def == '\0') { + buf_strappend (&userdef_buf, arg); + buf_strappend (&userdef_buf, + " 1\n"); + } + else { + buf_strnappend (&userdef_buf, arg, + def - arg); + buf_strappend (&userdef_buf, " "); + buf_strappend (&userdef_buf, + def + 1); + buf_strappend (&userdef_buf, "\n"); + } + } + break; + + case OPT_READ: + use_read = true; + break; + + case OPT_STACK: + //buf_strdefine (&userdef_buf, "YY_STACK_USED", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_STACK_USED",0); + break; + + case OPT_STDINIT: + do_stdinit = true; + break; + + case OPT_NO_STDINIT: + do_stdinit = false; + break; + + case OPT_YYCLASS: + yyclass = arg; + break; + + case OPT_YYLINENO: + do_yylineno = true; + break; + + case OPT_NO_YYLINENO: + do_yylineno = false; + break; + + case OPT_YYWRAP: + do_yywrap = true; + break; + + case OPT_NO_YYWRAP: + do_yywrap = false; + break; + + case OPT_YYMORE: + yymore_really_used = true; + break; + + case OPT_NO_YYMORE: + yymore_really_used = false; + break; + + case OPT_REJECT: + reject_really_used = true; + break; + + case OPT_NO_REJECT: + reject_really_used = false; + break; + + case OPT_NO_ANSI_FUNC_DEFS: + ansi_func_defs = false; + break; + + case OPT_NO_ANSI_FUNC_PROTOS: + ansi_func_protos = false; + break; + + case OPT_NO_YY_PUSH_STATE: + //buf_strdefine (&userdef_buf, "YY_NO_PUSH_STATE", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_PUSH_STATE",0); + break; + case OPT_NO_YY_POP_STATE: + //buf_strdefine (&userdef_buf, "YY_NO_POP_STATE", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_POP_STATE",0); + break; + case OPT_NO_YY_TOP_STATE: + //buf_strdefine (&userdef_buf, "YY_NO_TOP_STATE", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_TOP_STATE",0); + break; + case OPT_NO_UNPUT: + //buf_strdefine (&userdef_buf, "YY_NO_UNPUT", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_UNPUT",0); + break; + case OPT_NO_YY_SCAN_BUFFER: + //buf_strdefine (&userdef_buf, "YY_NO_SCAN_BUFFER", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_SCAN_BUFFER",0); + break; + case OPT_NO_YY_SCAN_BYTES: + //buf_strdefine (&userdef_buf, "YY_NO_SCAN_BYTES", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_SCAN_BYTES",0); + break; + case OPT_NO_YY_SCAN_STRING: + //buf_strdefine (&userdef_buf, "YY_NO_SCAN_STRING", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_SCAN_STRING",0); + break; + case OPT_NO_YYGET_EXTRA: + //buf_strdefine (&userdef_buf, "YY_NO_GET_EXTRA", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_GET_EXTRA",0); + break; + case OPT_NO_YYSET_EXTRA: + //buf_strdefine (&userdef_buf, "YY_NO_SET_EXTRA", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_SET_EXTRA",0); + break; + case OPT_NO_YYGET_LENG: + //buf_strdefine (&userdef_buf, "YY_NO_GET_LENG", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_GET_LENG",0); + break; + case OPT_NO_YYGET_TEXT: + //buf_strdefine (&userdef_buf, "YY_NO_GET_TEXT", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_GET_TEXT",0); + break; + case OPT_NO_YYGET_LINENO: + //buf_strdefine (&userdef_buf, "YY_NO_GET_LINENO", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_GET_LINENO",0); + break; + case OPT_NO_YYSET_LINENO: + //buf_strdefine (&userdef_buf, "YY_NO_SET_LINENO", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_SET_LINENO",0); + break; + case OPT_NO_YYGET_IN: + //buf_strdefine (&userdef_buf, "YY_NO_GET_IN", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_GET_IN",0); + break; + case OPT_NO_YYSET_IN: + //buf_strdefine (&userdef_buf, "YY_NO_SET_IN", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_SET_IN",0); + break; + case OPT_NO_YYGET_OUT: + //buf_strdefine (&userdef_buf, "YY_NO_GET_OUT", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_GET_OUT",0); + break; + case OPT_NO_YYSET_OUT: + //buf_strdefine (&userdef_buf, "YY_NO_SET_OUT", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_SET_OUT",0); + break; + case OPT_NO_YYGET_LVAL: + //buf_strdefine (&userdef_buf, "YY_NO_GET_LVAL", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_GET_LVAL",0); + break; + case OPT_NO_YYSET_LVAL: + //buf_strdefine (&userdef_buf, "YY_NO_SET_LVAL", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_SET_LVAL",0); + break; + case OPT_NO_YYGET_LLOC: + //buf_strdefine (&userdef_buf, "YY_NO_GET_LLOC", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_GET_LLOC",0); + break; + case OPT_NO_YYSET_LLOC: + //buf_strdefine (&userdef_buf, "YY_NO_SET_LLOC", "1"); + buf_m4_define( &m4defs_buf, "M4_YY_NO_SET_LLOC",0); + break; + + } /* switch */ + } /* while scanopt() */ + + scanopt_destroy (sopt); + + num_input_files = argc - optind; + input_files = argv + optind; + 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 the user explicitly requested posix compatibility by specifing the + * posix-compat option, then we check for conflicting options. However, if + * the POSIXLY_CORRECT variable is set, then we quietly make flex as + * posix-compatible as possible. This is the recommended behavior + * according to the GNU Coding Standards. + * + * Note: The posix option was added to flex to provide the posix behavior + * of the repeat operator in regular expressions, e.g., `ab{3}' + */ + if (posix_compat) { + /* TODO: This is where we try to make flex behave according to + * posiz, AND check for conflicting options. How far should we go + * with this? Should we disable all the neat-o flex features? + */ + /* Update: Estes says no, since other flex features don't violate posix. */ + } + + if (getenv ("POSIXLY_CORRECT")) { + posix_compat = true; + } + + 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 performance penalty ONLY on rules that can match newline characters\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 REJECT")); + else + flexerror (_ + ("variable trailing context rules cannot be used with -f or -F")); + } + + if (reject){ + out_m4_define( "M4_YY_USES_REJECT", NULL); + //outn ("\n#define YY_USES_REJECT"); + } + + if (!do_yywrap) { + if (!C_plus_plus) { + outn ("\n#define yywrap(n) 1"); + } + outn ("#define YY_SKIP_YYWRAP"); + } + + if (ddebug) + outn ("\n#define FLEX_DEBUG"); + + OUT_BEGIN_CODE (); + if (csize == 256) + outn ("typedef unsigned char YY_CHAR;"); + else + outn ("typedef char YY_CHAR;"); + OUT_END_CODE (); + + if (C_plus_plus) { + outn ("#define yytext_ptr yytext"); + + if (interactive) + outn ("#define YY_INTERACTIVE"); + } + + else { + OUT_BEGIN_CODE (); + /* In reentrant scanner, stdinit is handled in flex.skl. */ + if (do_stdinit) { + if (reentrant){ + outn ("#ifdef VMS"); + outn ("#ifdef __VMS_POSIX"); + outn ("#define YY_STDINIT"); + outn ("#endif"); + outn ("#else"); + outn ("#define YY_STDINIT"); + outn ("#endif"); + } + + 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 { + if(!reentrant) + outn (yy_nostdinit); + } + OUT_END_CODE (); + } + + OUT_BEGIN_CODE (); + if (fullspd) + outn ("typedef yyconst struct yy_trans_info *yy_state_type;"); + else if (!C_plus_plus) + outn ("typedef int yy_state_type;"); + OUT_END_CODE (); + + if (lex_compat) + outn ("#define YY_FLEX_LEX_COMPAT"); + + if (!C_plus_plus && !reentrant) { + outn ("extern int yylineno;"); + OUT_BEGIN_CODE (); + outn ("int yylineno = 1;"); + OUT_END_CODE (); + } + + if (C_plus_plus) { + outn ("\n#include <FlexLexer.h>"); + + if (!do_yywrap) { + outn("\nint yyFlexLexer::yywrap() { return 1; }"); + } + + 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 { + + /* Watch out: yytext_ptr is a variable when yytext is an array, + * but it's a macro when yytext is a pointer. + */ + if (yytext_is_array) { + if (!reentrant) + outn ("extern char yytext[];\n"); + } + else { + if (reentrant) { + outn ("#define yytext_ptr yytext_r"); + } + 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 () +{ + maximum_mns = (long_align ? MAXIMUM_MNS_LONG : MAXIMUM_MNS); + 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); + rule_has_nl = allocate_bool_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); + ccl_has_nl = allocate_bool_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; +} + + +/* extracts basename from path, optionally stripping the extension "\.*" + * (same concept as /bin/sh `basename`, but different handling of extension). */ +static char *basename2 (path, strip_ext) + char *path; + int strip_ext; /* boolean */ +{ + char *b, *e = 0; + + b = path; + for (b = path; *path; path++) + if (*path == '/') + b = path + 1; + else if (*path == '.') + e = path; + + if (strip_ext && e && e > b) + *e = '\0'; + return b; +} + +void usage () +{ + FILE *f = stdout; + + if (!did_outfilename) { + snprintf (outfile_path, sizeof(outfile_path), outfile_template, + prefix, C_plus_plus ? "cc" : "c"); + outfilename = outfile_path; + } + + fprintf (f, _("Usage: %s [OPTIONS] [FILE]...\n"), program_name); + fprintf (f, + _ + ("Generates programs that perform pattern-matching on text.\n" + "\n" "Table Compression:\n" + " -Ca, --align trade off larger tables for better memory alignment\n" + " -Ce, --ecs construct equivalence classes\n" + " -Cf do not compress tables; use -f representation\n" + " -CF do not compress tables; use -F representation\n" + " -Cm, --meta-ecs construct meta-equivalence classes\n" + " -Cr, --read use read() instead of stdio for scanner input\n" + " -f, --full generate fast, large scanner. Same as -Cfr\n" + " -F, --fast use alternate table representation. Same as -CFr\n" + " -Cem default compression (same as --ecs --meta-ecs)\n" + "\n" "Debugging:\n" + " -d, --debug enable debug mode in scanner\n" + " -b, --backup write backing-up information to %s\n" + " -p, --perf-report write performance report to stderr\n" + " -s, --nodefault suppress default rule to ECHO unmatched text\n" + " -T, --trace %s should run in trace mode\n" + " -w, --nowarn do not generate warnings\n" + " -v, --verbose write summary of scanner statistics to stdout\n" + "\n" "Files:\n" + " -o, --outfile=FILE specify output filename\n" + " -S, --skel=FILE specify skeleton file\n" + " -t, --stdout write scanner on stdout instead of %s\n" + " --yyclass=NAME name of C++ class\n" + " --header-file=FILE create a C header file in addition to the scanner\n" + " --tables-file[=FILE] write tables to FILE\n" "\n" + "Scanner behavior:\n" + " -7, --7bit generate 7-bit scanner\n" + " -8, --8bit generate 8-bit scanner\n" + " -B, --batch generate batch scanner (opposite of -I)\n" + " -i, --case-insensitive ignore case in patterns\n" + " -l, --lex-compat maximal compatibility with original lex\n" + " -X, --posix-compat maximal compatibility with POSIX lex\n" + " -I, --interactive generate interactive scanner (opposite of -B)\n" + " --yylineno track line count in yylineno\n" + "\n" "Generated code:\n" + " -+, --c++ generate C++ scanner class\n" + " -Dmacro[=defn] #define macro defn (default defn is '1')\n" + " -L, --noline suppress #line directives in scanner\n" + " -P, --prefix=STRING use STRING as prefix instead of \"yy\"\n" + " -R, --reentrant generate a reentrant C scanner\n" + " --bison-bridge scanner for bison pure parser.\n" + " --bison-locations include yylloc support.\n" + " --stdinit initialize yyin/yyout to stdin/stdout\n" + " --noansi-definitions old-style function definitions\n" + " --noansi-prototypes empty parameter list in prototypes\n" + " --nounistd do not include <unistd.h>\n" + " --noFUNCTION do not generate a particular FUNCTION\n" + "\n" "Miscellaneous:\n" + " -c do-nothing POSIX option\n" + " -n do-nothing POSIX option\n" + " -?\n" + " -h, --help produce this help message\n" + " -V, --version report %s version\n"), + backing_name, program_name, outfile_path, program_name); + +} |