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#include <stdio.h>
#include <string.h>
#include <Foundation/Foundation.h>
@interface ErrAct : NSObject
{
@public
int cs;
};
// Initialize the machine. Invokes any init statement blocks. Returns 0
// if the machine begins in a non-accepting state and 1 if the machine
// begins in an accepting state.
- (int) initFsm;
// Execute the machine on a block of data. Returns -1 if after processing
// the data, the machine is in the error state and can never accept, 0 if
// the machine is in a non-accepting state and 1 if the machine is in an
// accepting state.
- (void) executeWithData:(const char *)data len:(int)len;
// Indicate that there is no more data. Returns -1 if the machine finishes
// in the error state and does not accept, 0 if the machine finishes
// in any other non-accepting state and 1 if the machine finishes in an
// accepting state.
- (int) finish;
@end
@implementation ErrAct
static const char _ErrAct_trans_keys [] = { 1, 0, 2, 4, 4, 4, 0, 4, 4, 4, 0, 4, 1, 0, 0 , };
static const char _ErrAct_char_class [] = { 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 3, 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0 , };
static const char _ErrAct_index_offsets [] = { 0, 0, 3, 4, 9, 10, 15, 0 , };
static const char _ErrAct_indicies [] = { 1, 0, 2, 2, 5, 4, 4, 6, 2, 7, 5, 3, 3, 3, 7, 0 , };
static const char _ErrAct_index_defaults [] = { 0, 0, 3, 4, 3, 3, 8, 0 , };
static const char _ErrAct_trans_cond_spaces [] = { -1, -1, -1, -1, -1, -1, -1, -1, -1, 0 , };
static const char _ErrAct_cond_targs [] = { 0, 2, 3, 0, 0, 6, 4, 5, 0, 0 , };
static const char _ErrAct_cond_actions [] = { 1, 0, 0, 2, 3, 0, 0, 0, 0, 0 , };
static const char _ErrAct_eof_actions [] = { 0, 1, 2, 3, 2, 2, 0, 0 , };
static const char _ErrAct_nfa_targs [] = { 0, 0 , };
static const char _ErrAct_nfa_offsets [] = { 0, 0, 0, 0, 0, 0, 0, 0 , };
static const char _ErrAct_nfa_push_actions [] = { 0, 0 , };
static const char _ErrAct_nfa_pop_trans [] = { 0, 0 , };
static const int ErrAct_start = 1;
static const int ErrAct_first_final = 6;
static const int ErrAct_error = 0;
static const int ErrAct_en_main = 1;
- (int) initFsm;
{
{
cs = ( int ) ErrAct_start;
}
return 1;
}
- (void) executeWithData:(const char *)_data len:(int)_len;
{
const char *p = _data;
const char *pe = _data + _len;
const char *eof = pe;
{
unsigned int _trans = 0;
unsigned int _have = 0;
unsigned int _cont = 1;
const char *_keys;
const char *_inds;
while ( _cont == 1 )
{
if ( cs == 0 )
_cont = 0;
_have = 0;
if ( p == pe )
{
if ( p == eof )
{
if ( _have == 0 )
{
switch ( _ErrAct_eof_actions[cs] ) {
case 1 :
{
printf(" DIGIT PLUS MINUS\n");
}
break;
case 2 :
{
printf(" DIGIT\n");
}
break;
case 3 :
{
printf(" DIGIT DECIMAL\n");
}
break;
}
}
}
if ( _have == 0 )
_cont = 0;
}
if ( _cont == 1 )
{
if ( _have == 0 )
{
_keys = _ErrAct_trans_keys + (cs<<1);
_inds = _ErrAct_indicies + _ErrAct_index_offsets[cs];
if ( ((*( p ))
)<= 57 && ((*( p ))
)>= 10 )
{
int _ic = ( int ) _ErrAct_char_class[( int ) ((*( p ))
)- 10];
if ( _ic <= ( int ) (*( _keys+1 ))
&& _ic >= ( int ) (*( _keys ))
)
_trans = ( unsigned int ) (*( _inds + ( int ) (_ic - ( int ) (*( _keys ))
) ))
;
else
_trans = ( unsigned int ) _ErrAct_index_defaults[cs];
}
else
{
_trans = ( unsigned int ) _ErrAct_index_defaults[cs];
}
}
if ( _cont == 1 )
{
cs = ( int ) _ErrAct_cond_targs[_trans];
switch ( _ErrAct_cond_actions[_trans] ) {
case 1 :
{
printf(" DIGIT PLUS MINUS\n");
}
break;
case 2 :
{
printf(" DIGIT\n");
}
break;
case 3 :
{
printf(" DIGIT DECIMAL\n");
}
break;
}
if ( cs == 0 )
_cont = 0;
if ( _cont == 1 )
p += 1;
}
}
}
}
}
- (int) finish;
{
if ( cs == ErrAct_error )
return -1;
else if ( cs >= ErrAct_first_final )
return 1;
return 0;
}
@end
#define BUFSIZE 1024
void test( char *buf )
{
ErrAct *errAct = [[ErrAct alloc] init];
[errAct initFsm];
[errAct executeWithData:buf len:strlen(buf)];
if ( [errAct finish] > 0 )
printf("ACCEPT\n");
else
printf("FAIL\n");
}
int main()
{
test( "1\n" );
test( "+1\n" );
test( "-1\n" );
test( "1.1\n" );
test( "+1.1\n" );
test( "-1.1\n" );
test( "a\n" );
test( "-\n" );
test( "+\n" );
test( "-a\n" );
test( "+b\n" );
test( "1.\n" );
test( "1d\n" );
test( "1.d\n" );
test( "1.1d\n" );
return 0;
}
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