diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 1858 |
1 files changed, 0 insertions, 1858 deletions
@@ -1,1858 +0,0 @@ -/* 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; -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 (); - - skelout (); - /* %% [1.5] DFA */ - 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")); - - 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); - if (!str) - flexfatal(_("allocation of macro definition failed")); - 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; - - 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) - if (reentrant) - outn ("\n#define yywrap(yyscanner) 1"); - else - outn ("\n#define yywrap() 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); - -} |