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/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│
│vi: set et ft=c ts=8 sw=8 fenc=utf-8 :vi│
└─────────────────────────────────────────────────────────────────────────────*/
/* clang-format off */
asm(".include \"third_party/lex/COPYING\"");
/* $OpenBSD: main.c,v 1.27 2017/01/21 08:33:07 krw Exp $ */
/* 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 "libc/calls/calls.h"
#include "libc/fmt/fmt.h"
#include "libc/str/str.h"
#include "libc/mem/mem.h"
#include "libc/math.h"
#include "libc/fmt/conv.h"
#include "libc/log/log.h"
#include "libc/runtime/gc.h"
#include "libc/x/x.h"
#include "libc/runtime/runtime.h"
#include "libc/x/x.h"
#include "libc/bits/safemacros.internal.h"
#include "libc/bits/safemacros.internal.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;
u_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";
static const char *outfile_template = "lex.%s.%s";
static const char *backing_name = "lex.backup";
static const char *tablesfile_template = "lex.%s.tables";
/* 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
pledge("stdio rpath wpath cpath proc exec", NULL);
return flex_main(argc, argv);
}
/* check_options - check user-specified options */
void
check_options()
{
int i;
if (lex_compat) {
if (C_plus_plus)
flexerror(_("Can't use -+ with -l option"));
if (fulltbl || fullspd)
flexerror(_("Can't use -f or -F with -l option"));
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) {
lexwarn(_("%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);
filter_create_ext(output_chain, firstnonnull(getenv("M4"), gc(xasprintf("o/%s/third_party/m4/m4.com.dbg", nulltoempty(getenv("MODE"))))), "-P", "-g", 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);
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 *) malloc(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 *def2;
for (def2 = arg;
*def2 != '\0' && *def2 != '='; ++def2);
buf_strappend(&userdef_buf, "#define ");
if (*def2 == '\0') {
buf_strappend(&userdef_buf, arg);
buf_strappend(&userdef_buf,
" 1\n");
} else {
buf_strnappend(&userdef_buf, arg,
def2 - arg);
buf_strappend(&userdef_buf, " ");
buf_strappend(&userdef_buf,
def2 + 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("#define YY_STDINIT");
}
outn(yy_stdinit);
} 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 \"third_party/lex/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"
" -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);
}
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