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#line 1 "statechart.rl"
/*
* Demonstrate the use of labels, the epsilon operator, and the join operator
* for creating machines using the named state and transition list paradigm.
* This implementes the same machine as the atoi example.
*/
#include <iostream>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
using namespace std;
struct StateChart
{
bool neg;
int val;
int cs;
int init( );
int execute( const char *data, int len );
int finish( );
};
#line 66 "statechart.rl"
#line 33 "statechart.cpp"
static const int StateChart_start = 3;
static const int StateChart_first_final = 3;
static const int StateChart_error = 0;
static const int StateChart_en_main = 3;
#line 69 "statechart.rl"
int StateChart::init( )
{
neg = false;
val = false;
#line 48 "statechart.cpp"
{
cs = StateChart_start;
}
#line 75 "statechart.rl"
return 1;
}
int StateChart::execute( const char *data, int len )
{
const char *p = data;
const char *pe = data + len;
#line 63 "statechart.cpp"
{
if ( p == pe )
goto _test_eof;
switch ( cs )
{
tr2:
#line 41 "statechart.rl"
{
if ( neg )
val = -1 * val;
}
#line 65 "statechart.rl"
{ cout << val << endl; }
goto st3;
st3:
if ( ++p == pe )
goto _test_eof3;
case 3:
#line 82 "statechart.cpp"
switch( (*p) ) {
case 43: goto tr3;
case 45: goto tr4;
}
if ( 48 <= (*p) && (*p) <= 57 )
goto tr5;
goto st0;
st0:
cs = 0;
goto _out;
tr3:
#line 28 "statechart.rl"
{
neg = false;
val = 0;
}
goto st1;
tr4:
#line 28 "statechart.rl"
{
neg = false;
val = 0;
}
#line 33 "statechart.rl"
{
neg = true;
}
goto st1;
st1:
if ( ++p == pe )
goto _test_eof1;
case 1:
#line 115 "statechart.cpp"
if ( 48 <= (*p) && (*p) <= 57 )
goto tr0;
goto st0;
tr0:
#line 37 "statechart.rl"
{
val = val * 10 + ((*p) - '0');
}
goto st2;
tr5:
#line 28 "statechart.rl"
{
neg = false;
val = 0;
}
#line 37 "statechart.rl"
{
val = val * 10 + ((*p) - '0');
}
goto st2;
st2:
if ( ++p == pe )
goto _test_eof2;
case 2:
#line 140 "statechart.cpp"
if ( (*p) == 10 )
goto tr2;
if ( 48 <= (*p) && (*p) <= 57 )
goto tr0;
goto st0;
}
_test_eof3: cs = 3; goto _test_eof;
_test_eof1: cs = 1; goto _test_eof;
_test_eof2: cs = 2; goto _test_eof;
_test_eof: {}
_out: {}
}
#line 84 "statechart.rl"
if ( cs == StateChart_error )
return -1;
if ( cs >= StateChart_first_final )
return 1;
return 0;
}
int StateChart::finish( )
{
if ( cs == StateChart_error )
return -1;
if ( cs >= StateChart_first_final )
return 1;
return 0;
}
#define BUFSIZE 1024
int main()
{
char buf[BUFSIZE];
StateChart atoi;
atoi.init();
while ( fgets( buf, sizeof(buf), stdin ) != 0 ) {
atoi.execute( buf, strlen(buf) );
}
if ( atoi.finish() <= 0 )
cerr << "statechart: error: parsing input" << endl;
return 0;
}
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