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#line 1 "gotocallret.rl"
/*
* Demonstrate the use of goto, call and return. This machine expects either a
* lower case char or a digit as a command then a space followed by the command
* arg. If the command is a char, then the arg must be an a string of chars.
* If the command is a digit, then the arg must be a string of digits. This
* choice is determined by action code, rather than though transition
* desitinations.
*/
#include <iostream>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
using namespace std;
struct GotoCallRet
{
char comm;
int cs, top, stack[32];
int init( );
int execute( const char *data, int len, bool isEof );
int finish( );
};
#line 57 "gotocallret.rl"
#line 35 "gotocallret.cpp"
static const int GotoCallRet_start = 7;
static const int GotoCallRet_first_final = 7;
static const int GotoCallRet_error = 0;
static const int GotoCallRet_en_garble_line = 3;
static const int GotoCallRet_en_alp_comm = 5;
static const int GotoCallRet_en_dig_comm = 6;
static const int GotoCallRet_en_main = 7;
#line 60 "gotocallret.rl"
int GotoCallRet::init( )
{
#line 51 "gotocallret.cpp"
{
cs = GotoCallRet_start;
top = 0;
}
#line 64 "gotocallret.rl"
return 1;
}
int GotoCallRet::execute( const char *data, int len, bool isEof )
{
const char *p = data;
const char *pe = data + len;
const char *eof = isEof ? pe : 0;
#line 68 "gotocallret.cpp"
{
if ( p == pe )
goto _test_eof;
goto _resume;
_again:
switch ( cs ) {
case 7: goto st7;
case 0: goto st0;
case 1: goto st1;
case 2: goto st2;
case 3: goto st3;
case 4: goto st4;
case 8: goto st8;
case 5: goto st5;
case 9: goto st9;
case 6: goto st6;
case 10: goto st10;
default: break;
}
if ( ++p == pe )
goto _test_eof;
_resume:
switch ( cs )
{
tr2:
#line 52 "gotocallret.rl"
{cout << "correct command" << endl;}
goto st7;
st7:
if ( ++p == pe )
goto _test_eof7;
case 7:
#line 103 "gotocallret.cpp"
if ( (*p) > 57 ) {
if ( 97 <= (*p) && (*p) <= 122 )
goto tr11;
} else if ( (*p) >= 48 )
goto tr11;
goto tr0;
tr0:
#line 56 "gotocallret.rl"
{p--;{goto st3;}}
goto st0;
tr7:
#line 38 "gotocallret.rl"
{p--;{cs = stack[--top];goto _again;}}
goto st0;
tr9:
#line 39 "gotocallret.rl"
{p--;{cs = stack[--top];goto _again;}}
goto st0;
#line 122 "gotocallret.cpp"
st0:
cs = 0;
goto _out;
tr11:
#line 51 "gotocallret.rl"
{comm = (*p);}
goto st1;
st1:
if ( ++p == pe )
goto _test_eof1;
case 1:
#line 134 "gotocallret.cpp"
if ( (*p) == 32 )
goto tr1;
goto tr0;
tr1:
#line 42 "gotocallret.rl"
{
if ( comm >= 'a' )
{stack[top++] = 2; goto st5;}
else
{stack[top++] = 2; goto st6;}
}
goto st2;
st2:
if ( ++p == pe )
goto _test_eof2;
case 2:
#line 151 "gotocallret.cpp"
if ( (*p) == 10 )
goto tr2;
goto tr0;
st3:
if ( ++p == pe )
goto _test_eof3;
case 3:
if ( (*p) == 10 )
goto tr4;
goto tr3;
tr3:
#line 34 "gotocallret.rl"
{cout << "error: garbling line" << endl;}
goto st4;
st4:
if ( ++p == pe )
goto _test_eof4;
case 4:
#line 170 "gotocallret.cpp"
if ( (*p) == 10 )
goto tr6;
goto st4;
tr4:
#line 34 "gotocallret.rl"
{cout << "error: garbling line" << endl;}
#line 34 "gotocallret.rl"
{{goto st7;}}
goto st8;
tr6:
#line 34 "gotocallret.rl"
{{goto st7;}}
goto st8;
st8:
if ( ++p == pe )
goto _test_eof8;
case 8:
#line 188 "gotocallret.cpp"
goto st0;
st5:
if ( ++p == pe )
goto _test_eof5;
case 5:
if ( (*p) > 90 ) {
if ( 97 <= (*p) && (*p) <= 122 )
goto st9;
} else if ( (*p) >= 65 )
goto st9;
goto tr7;
st9:
if ( ++p == pe )
goto _test_eof9;
case 9:
if ( (*p) > 90 ) {
if ( 97 <= (*p) && (*p) <= 122 )
goto st9;
} else if ( (*p) >= 65 )
goto st9;
goto tr7;
st6:
if ( ++p == pe )
goto _test_eof6;
case 6:
if ( 48 <= (*p) && (*p) <= 57 )
goto st10;
goto tr9;
st10:
if ( ++p == pe )
goto _test_eof10;
case 10:
if ( 48 <= (*p) && (*p) <= 57 )
goto st10;
goto tr9;
}
_test_eof7: cs = 7; goto _test_eof;
_test_eof1: cs = 1; goto _test_eof;
_test_eof2: cs = 2; goto _test_eof;
_test_eof3: cs = 3; goto _test_eof;
_test_eof4: cs = 4; goto _test_eof;
_test_eof8: cs = 8; goto _test_eof;
_test_eof5: cs = 5; goto _test_eof;
_test_eof9: cs = 9; goto _test_eof;
_test_eof6: cs = 6; goto _test_eof;
_test_eof10: cs = 10; goto _test_eof;
_test_eof: {}
if ( p == eof )
{
switch ( cs ) {
case 5:
#line 38 "gotocallret.rl"
{p--;{cs = stack[--top];goto _again;}}
break;
case 6:
#line 39 "gotocallret.rl"
{p--;{cs = stack[--top];goto _again;}}
break;
case 1:
case 2:
#line 56 "gotocallret.rl"
{p--;{goto st3;}}
break;
#line 253 "gotocallret.cpp"
}
}
_out: {}
}
#line 74 "gotocallret.rl"
if ( cs == GotoCallRet_error )
return -1;
if ( cs >= GotoCallRet_first_final )
return 1;
return 0;
}
#define BUFSIZE 1024
int main()
{
char buf[BUFSIZE];
GotoCallRet gcr;
gcr.init();
while ( fgets( buf, sizeof(buf), stdin ) != 0 )
gcr.execute( buf, strlen(buf), false );
gcr.execute( 0, 0, true );
if ( gcr.cs < GotoCallRet_first_final )
cerr << "gotocallret: error: parsing input" << endl;
return 0;
}
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