int mkstate(int sym)
{
if ( ++lastnfa >= current_mns )
{
if ( (current_mns += MNS_INCREMENT) >= MAXIMUM_MNS )
lerrif( "input rules are too complicated (>= %d NFA states)",
current_mns );
++num_reallocs;
firstst = reallocate_integer_array( firstst, current_mns );
lastst = reallocate_integer_array( lastst, current_mns );
finalst = reallocate_integer_array( finalst, current_mns );
transchar = reallocate_integer_array( transchar, current_mns );
trans1 = reallocate_integer_array( trans1, current_mns );
trans2 = reallocate_integer_array( trans2, current_mns );
accptnum = reallocate_integer_array( accptnum, current_mns );
assoc_rule = reallocate_integer_array( assoc_rule, current_mns );
state_type = reallocate_integer_array( state_type, current_mns );
}
firstst[lastnfa] = lastnfa;
finalst[lastnfa] = lastnfa;
lastst[lastnfa] = lastnfa;
transchar[lastnfa] = sym;
trans1[lastnfa] = NO_TRANSITION;
trans2[lastnfa] = NO_TRANSITION;
accptnum[lastnfa] = NIL;
assoc_rule[lastnfa] = num_rules;
state_type[lastnfa] = current_state_type;
/* fix up equivalence classes base on this transition. Note that any
* character which has its own transition gets its own equivalence class.
* Thus only characters which are only in character classes have a chance
* at being in the same equivalence class. E.g. "a|b" puts 'a' and 'b'
* into two different equivalence classes. "[ab]" puts them in the same
* equivalence class (barring other differences elsewhere in the input).
*/
if ( sym < 0 )
{
/* we don't have to update the equivalence classes since that was
* already done when the ccl was created for the first time
*/
}
else if ( sym == SYM_EPSILON )
++numeps;
else
{
if ( useecs )
/* map NUL's to csize */
mkechar( sym ? sym : csize, nextecm, ecgroup );
}
return ( lastnfa );
}
void new_rule(void)
{
if ( ++num_rules >= current_max_rules )
{
++num_reallocs;
current_max_rules += MAX_RULES_INCREMENT;
rule_type = reallocate_integer_array( rule_type, current_max_rules );
rule_linenum =
reallocate_integer_array( rule_linenum, current_max_rules );
}
if ( num_rules > MAX_RULE )
lerrif( "too many rules (> %d)!", MAX_RULE );
rule_linenum[num_rules] = linenum;
}
void flexinit(int argc, char **argv)
{
int i, sawcmpflag;
char *arg;
printstats = syntaxerror = trace = spprdflt = caseins = false;
lex_compat = C_plus_plus = backing_up_report = ddebug = fulltbl = false;
fullspd = long_align = nowarn = yymore_used = continued_action = false;
do_yylineno = yytext_is_array = in_rule = reject = do_stdinit = false;
yymore_really_used = reject_really_used = unspecified;
interactive = csize = unspecified;
do_yywrap = gen_line_dirs = usemecs = useecs = true;
performance_report = 0;
did_outfilename = 0;
prefix = "yy";
yyclass = NULL;
use_read = use_stdout = false;
sawcmpflag = false;
/* Initialize dynamic array for holding the rule actions. */
action_size = 2048; /* default size of action array in bytes */
action_array = allocate_character_array( action_size );
defs1_offset = prolog_offset = action_offset = action_index = 0;
action_array[0] = '\0';
program_name = argv[0];
if ( program_name[0] != '\0' &&
program_name[strlen( program_name ) - 1] == '+' )
C_plus_plus = true;
/* read flags */
for ( --argc, ++argv; argc ; --argc, ++argv )
{
arg = argv[0];
if ( arg[0] != '-' || arg[1] == '\0' )
break;
if ( arg[1] == '-' )
{ /* --option */
if ( ! strcmp( arg, "--help" ) )
arg = "-h";
else if ( ! strcmp( arg, "--version" ) )
arg = "-V";
else if ( ! strcmp( arg, "--" ) )
{ /* end of options */
--argc;
++argv;
break;
}
}
for ( i = 1; arg[i] != '\0'; ++i )
switch ( arg[i] )
{
case '+':
C_plus_plus = true;
break;
case 'B':
interactive = false;
break;
case 'b':
backing_up_report = true;
break;
case 'c':
break;
case 'C':
if ( i != 1 )
flexerror(
_( "-C flag must be given separately" ) );
if ( ! sawcmpflag )
{
useecs = false;
usemecs = false;
fulltbl = false;
sawcmpflag = true;
}
for ( ++i; arg[i] != '\0'; ++i )
switch ( arg[i] )
{
case 'a':
long_align =
true;
break;
case 'e':
useecs = true;
break;
case 'F':
fullspd = true;
break;
case 'f':
fulltbl = true;
break;
case 'm':
usemecs = true;
break;
case 'r':
use_read = true;
break;
default:
lerrif(
_( "unknown -C option '%c'" ),
(int) arg[i] );
break;
}
goto get_next_arg;
case 'd':
ddebug = true;
break;
case 'f':
useecs = usemecs = false;
use_read = fulltbl = true;
break;
case 'F':
useecs = usemecs = false;
use_read = fullspd = true;
break;
case '?':
case 'h':
usage();
exit( 0 );
case 'I':
interactive = true;
break;
case 'i':
caseins = true;
break;
case 'l':
lex_compat = true;
break;
case 'L':
gen_line_dirs = false;
break;
case 'n':
/* Stupid do-nothing deprecated
* option.
*/
break;
case 'o':
if ( i != 1 )
flexerror(
_( "-o flag must be given separately" ) );
outfilename = arg + i + 1;
did_outfilename = 1;
goto get_next_arg;
case 'P':
if ( i != 1 )
flexerror(
_( "-P flag must be given separately" ) );
prefix = arg + i + 1;
goto get_next_arg;
case 'p':
++performance_report;
break;
case 'S':
if ( i != 1 )
flexerror(
_( "-S flag must be given separately" ) );
skelname = arg + i + 1;
goto get_next_arg;
case 's':
spprdflt = true;
break;
case 't':
use_stdout = true;
break;
case 'T':
trace = true;
break;
case 'v':
printstats = true;
break;
case 'V':
printf( _( "%s version %s\n" ),
program_name, flex_version );
exit( 0 );
case 'w':
nowarn = true;
break;
case '7':
csize = 128;
break;
case '8':
csize = CSIZE;
break;
default:
fprintf( stderr,
_( "%s: unknown flag '%c'. For usage, try\n\t%s --help\n" ),
program_name, (int) arg[i],
program_name );
exit( 1 );
}
/* Used by -C, -S, -o, and -P flags in lieu of a "continue 2"
* control.
*/
get_next_arg: ;
}
num_input_files = argc;
input_files = argv;
set_input_file( num_input_files > 0 ? input_files[0] : NULL );
lastccl = lastsc = lastdfa = lastnfa = 0;
num_rules = num_eof_rules = default_rule = 0;
numas = numsnpairs = tmpuses = 0;
numecs = numeps = eps2 = num_reallocs = hshcol = dfaeql = totnst = 0;
numuniq = numdup = hshsave = eofseen = datapos = dataline = 0;
num_backing_up = onesp = numprots = 0;
variable_trailing_context_rules = bol_needed = false;
out_linenum = linenum = sectnum = 1;
firstprot = NIL;
/* Used in mkprot() so that the first proto goes in slot 1
* of the proto queue.
*/
lastprot = 1;
set_up_initial_allocations();
}
void flexinit(int argc, char **argv)
{
int i, sawcmpflag;
char *arg, *flex_gettime(), *mktemp();
printstats = syntaxerror = trace = spprdflt = interactive = caseins = false;
backtrack_report = performance_report = ddebug = fulltbl = fullspd = false;
yymore_used = continued_action = reject = false;
yymore_really_used = reject_really_used = false;
gen_line_dirs = usemecs = useecs = true;
sawcmpflag = false;
use_stdout = false;
csize = DEFAULT_CSIZE;
program_name = argv[0];
/* read flags */
for ( --argc, ++argv; argc ; --argc, ++argv )
{
if ( argv[0][0] != '-' || argv[0][1] == '\0' )
break;
arg = argv[0];
for ( i = 1; arg[i] != '\0'; ++i )
switch ( arg[i] )
{
case 'b':
backtrack_report = true;
break;
case 'c':
fprintf( stderr,
"%s: Assuming use of deprecated -c flag is really intended to be -C\n",
program_name );
/* fall through */
case 'C':
if ( i != 1 )
flexerror( "-C flag must be given separately" );
if ( ! sawcmpflag )
{
useecs = false;
usemecs = false;
fulltbl = false;
sawcmpflag = true;
}
for ( ++i; arg[i] != '\0'; ++i )
switch ( arg[i] )
{
case 'e':
useecs = true;
break;
case 'F':
fullspd = true;
break;
case 'f':
fulltbl = true;
break;
case 'm':
usemecs = true;
break;
default:
lerrif( "unknown -C option '%c'",
(int) arg[i] );
break;
}
goto get_next_arg;
case 'd':
ddebug = true;
break;
case 'f':
useecs = usemecs = false;
fulltbl = true;
break;
case 'F':
useecs = usemecs = false;
fullspd = true;
break;
case 'I':
interactive = true;
break;
case 'i':
caseins = true;
break;
case 'L':
gen_line_dirs = false;
break;
case 'n':
/* stupid do-nothing deprecated option */
break;
case 'p':
performance_report = true;
break;
case 'S':
if ( i != 1 )
flexerror( "-S flag must be given separately" );
skelname = arg + i + 1;
goto get_next_arg;
case 's':
spprdflt = true;
break;
case 't':
use_stdout = true;
break;
case 'T':
trace = true;
break;
case 'v':
printstats = true;
break;
case '8':
csize = CSIZE;
break;
default:
lerrif( "unknown flag '%c'", (int) arg[i] );
break;
}
get_next_arg: /* used by -C and -S flags in lieu of a "continue 2" control */
;
}
if ( (fulltbl || fullspd) && usemecs )
flexerror( "full table and -Cm don't make sense together" );
if ( (fulltbl || fullspd) && interactive )
flexerror( "full table and -I are (currently) incompatible" );
if ( fulltbl && fullspd )
flexerror( "full table and -F are mutually exclusive" );
if ( ! skelname )
{
static char skeleton_name_storage[400];
skelname = skeleton_name_storage;
(void) strcpy( skelname, ENQUOTE(DEFAULT_SKELETON_FILE) );
}
if ( ! use_stdout )
{
FILE *prev_stdout = freopen( outfile, "w", stdout );
if ( prev_stdout == NULL )
lerrsf( "could not create %s", outfile );
outfile_created = 1;
}
num_input_files = argc;
input_files = argv;
set_input_file( num_input_files > 0 ? input_files[0] : NULL );
if ( backtrack_report )
{
#ifndef SHORT_FILE_NAMES
backtrack_file = fopen( "lex.backtrack", "w" );
#else
backtrack_file = fopen( "lex.bck", "w" );
#endif
if ( backtrack_file == NULL )
flexerror( "could not create lex.backtrack" );
}
else
backtrack_file = NULL;
lastccl = 0;
lastsc = 0;
/* initialize the statistics */
starttime = flex_gettime();
if ( (skelfile = fopen( skelname, "r" )) == NULL )
lerrsf( "can't open skeleton file %s", skelname );
epicsTempName ( action_file_name, sizeof ( action_file_name ) );
if ( action_file_name[0] == '\0' )
{
lerrsf( "can't create temporary file name", "" );
}
if ( ( temp_action_file = fopen ( action_file_name, "w" ) ) == NULL )
lerrsf( "can't open temporary action file %s", action_file_name );
lastdfa = lastnfa = num_rules = numas = numsnpairs = tmpuses = 0;
numecs = numeps = eps2 = num_reallocs = hshcol = dfaeql = totnst = 0;
numuniq = numdup = hshsave = eofseen = datapos = dataline = 0;
num_backtracking = 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;
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 */
}
}
set_up_initial_allocations();
}