int main(int argc, char **argv)
{
int i;
#ifdef NEED_ARGV_FIXUP
argv_fixup( &argc, &argv );
#endif
flexinit( argc, argv );
readin();
ntod();
for ( i = 1; i <= num_rules; ++i )
if ( ! rule_useful[i] && i != default_rule )
line_warning( _( "rule cannot be matched" ),
rule_linenum[i] );
if ( spprdflt && ! reject && rule_useful[default_rule] )
line_warning(
_( "-s option given but default rule can be matched" ),
rule_linenum[default_rule] );
/* Generate the C state transition tables from the DFA. */
make_tables();
/* Note, flexend does not return. It exits with its argument
* as status.
*/
flexend( 0 );
return 0; /* keep compilers/lint happy */
}
int flex_main (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 */
}
void readin(void)
{
skelout();
if ( ddebug )
puts( "#define FLEX_DEBUG" );
if ( csize == 256 )
puts( "#define YY_CHAR unsigned char" );
else
puts( "#define YY_CHAR char" );
line_directive_out( stdout );
if ( yyparse() )
{
pinpoint_message( "fatal parse error" );
flexend( 1 );
}
if ( xlation )
{
numecs = ecs_from_xlation( ecgroup );
useecs = true;
}
else 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();
}
void flexerror(const char *msg)
{
fprintf( stderr, "%s: %s\n", program_name, msg );
flexend( 1 );
}
void readin(void)
{
static char yy_stdinit[] = "FILE *yyin = stdin, *yyout = stdout;";
static char yy_nostdinit[] =
"FILE *yyin = NULL, *yyout = NULL;";
line_directive_out( NULL, 1 );
if ( yyparse() )
{
pinpoint_message( _( "fatal parse error" ) );
flexend( 1 );
}
if ( syntaxerror )
flexend( 1 );
if ( backing_up_report )
{
backing_up_file = fopen( backing_name, "w" );
if ( backing_up_file == NULL )
lerrsf(
_( "could not create backing-up info file %s" ),
backing_name );
}
else
backing_up_file = NULL;
if ( yymore_really_used == true )
yymore_used = true;
else if ( yymore_really_used == false )
yymore_used = false;
if ( reject_really_used == true )
reject = true;
else if ( reject_really_used == false )
reject = false;
if ( performance_report > 0 )
{
if ( lex_compat )
{
fprintf( stderr,
_( "-l AT&T lex compatibility option entails a large performance penalty\n" ) );
fprintf( stderr,
_( " and may be the actual source of other reported performance penalties\n" ) );
}
else if ( do_yylineno )
{
fprintf( stderr,
_( "%%option yylineno entails a large performance penalty\n" ) );
}
if ( performance_report > 1 )
{
if ( interactive )
fprintf( stderr,
_( "-I (interactive) entails a minor performance penalty\n" ) );
if ( yymore_used )
fprintf( stderr,
_( "yymore() entails a minor performance penalty\n" ) );
}
if ( reject )
fprintf( stderr,
_( "REJECT entails a large performance penalty\n" ) );
if ( variable_trailing_context_rules )
fprintf( stderr,
_( "Variable trailing context rules entail a large performance penalty\n" ) );
}
if ( reject )
real_reject = true;
if ( variable_trailing_context_rules )
reject = true;
if ( (fulltbl || fullspd) && reject )
{
if ( real_reject )
flexerror(
_( "REJECT cannot be used with -f or -F" ) );
else if ( do_yylineno )
flexerror(
_( "%option yylineno cannot be used with -f or -F" ) );
else
flexerror(
_( "variable trailing context rules cannot be used with -f or -F" ) );
}
if ( reject )
outn( "\n#define YY_USES_REJECT" );
if ( ! do_yywrap )
{
outn( "\n#define yywrap() 1" );
outn( "#define YY_SKIP_YYWRAP" );
}
if ( ddebug )
outn( "\n#define FLEX_DEBUG" );
if ( csize == 256 )
outn( "typedef unsigned char YY_CHAR;" );
else
outn( "typedef char YY_CHAR;" );
if ( C_plus_plus )
{
outn( "#define yytext_ptr yytext" );
if ( interactive )
outn( "#define YY_INTERACTIVE" );
}
else
{
if ( do_stdinit )
{
outn( yy_stdinit );
}
else
outn( yy_nostdinit );
}
if ( fullspd )
outn( "typedef yyconst struct yy_trans_info *yy_state_type;" );
else if ( ! C_plus_plus )
outn( "typedef int yy_state_type;" );
if ( ddebug )
outn( "\n#define FLEX_DEBUG" );
if ( lex_compat )
outn( "#define YY_FLEX_LEX_COMPAT" );
if ( do_yylineno && ! C_plus_plus )
{
outn( "extern int yylineno;" );
outn( "int yylineno = 1;" );
}
if ( C_plus_plus )
{
outn( "\n#include <FlexLexer.h>" );
if ( yyclass )
{
outn( "int yyFlexLexer::yylex()" );
outn( "\t{" );
outn(
"\tLexerError( \"yyFlexLexer::yylex invoked but %option yyclass used\" );" );
outn( "\treturn 0;" );
outn( "\t}" );
out_str( "\n#define YY_DECL int %s::yylex()\n",
yyclass );
}
}
else
{
if ( yytext_is_array )
outn( "extern char yytext[];\n" );
else
{
outn( "extern char *yytext;" );
outn( "#define yytext_ptr yytext" );
}
if ( yyclass )
flexerror(
_( "%option yyclass only meaningful for C++ scanners" ) );
}
if ( useecs )
numecs = cre8ecs( nextecm, ecgroup, csize );
else
numecs = csize;
/* Now map the equivalence class for NUL to its expected place. */
ecgroup[0] = ecgroup[csize];
NUL_ec = ABS( ecgroup[0] );
if ( useecs )
ccl2ecl();
}
int main(int argc, char *argv[])
{
flexinit( argc, argv );
readin();
if ( syntaxerror )
flexend( 1 );
if ( yymore_really_used == REALLY_USED )
yymore_used = true;
else if ( yymore_really_used == REALLY_NOT_USED )
yymore_used = false;
if ( reject_really_used == REALLY_USED )
reject = true;
else if ( reject_really_used == REALLY_NOT_USED )
reject = false;
if ( performance_report )
{
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
flexerror(
"variable trailing context rules cannot be used with -f or -F" );
}
ntod();
/* 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 );
/*NOTREACHED*/
}
void readin (void)
{
static char yy_stdinit[] = "FILE *yyin = stdin, *yyout = stdout;";
static char yy_nostdinit[] =
"FILE *yyin = NULL, *yyout = NULL;";
line_directive_out(NULL, 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)
lerr (_
("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)
out_str ("\n#define %swrap(yyscanner) (/*CONSTCOND*/1)\n", prefix);
else
out_str ("\n#define %swrap() (/*CONSTCOND*/1)\n", prefix);
}
outn ("#define YY_SKIP_YYWRAP");
}
if (ddebug)
outn ("\n#define FLEX_DEBUG");
OUT_BEGIN_CODE ();
outn ("typedef flex_uint8_t 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 const 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("#ifdef yytext_ptr");
outn("#undef yytext_ptr");
outn("#endif");
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 ();
}
