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/*
* @LANG: c++
*/
/**
* Test a high character to make sure signedness
* isn't messing us up.
*/
#include <stdio.h>
#include <string.h>
struct Fsm
{
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 init( );
// 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.
int execute( const unsigned char *data, 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( );
};
%%{
machine Fsm;
alphtype unsigned char;
# Indicate we got the high character.
action gothigh {
printf("yes\n");
}
main := 0xe8 @gothigh '\n';
}%%
%% write data;
int Fsm::init( )
{
%% write init;
return 0;
}
int Fsm::execute( const unsigned char *_data, int _len )
{
const unsigned char *p = _data;
const unsigned char *pe = _data+_len;
%% write exec;
if ( cs == Fsm_error )
return -1;
if ( cs >= Fsm_first_final )
return 1;
return 0;
}
int Fsm::finish()
{
if ( cs == Fsm_error )
return -1;
if ( cs >= Fsm_first_final )
return 1;
return 0;
}
Fsm fsm;
void test( unsigned char *buf, int len )
{
fsm.init();
fsm.execute( buf, len );
if ( fsm.finish() > 0 )
printf("ACCEPT\n");
else
printf("FAIL\n");
}
unsigned char data1[] = { 0xe8, 10 };
unsigned char data2[] = { 0xf8, 10 };
int main()
{
test( data1, 2 );
test( data2, 2 );
return 0;
}
#ifdef _____OUTPUT_____
yes
ACCEPT
FAIL
#endif
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