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#line 1 "pullscan.rl"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define BUFSIZE 4096
typedef struct _Scanner {
/* Scanner state. */
int cs;
int act;
int have;
int curline;
char *ts;
char *te;
char *p;
char *pe;
char *eof;
FILE *file;
int done;
/* Token data */
char *data;
int len;
int value;
char buf[BUFSIZE];
} Scanner;
#line 34 "pullscan.c"
static const int Scanner_start = 2;
static const int Scanner_first_final = 2;
static const int Scanner_error = -1;
static const int Scanner_en_main = 2;
#line 33 "pullscan.rl"
void scan_init( Scanner *s, FILE *file )
{
memset (s, '\0', sizeof(Scanner));
s->curline = 1;
s->file = file;
s->eof = 0;
#line 52 "pullscan.c"
{
s->cs = Scanner_start;
s->ts = 0;
s->te = 0;
s->act = 0;
}
#line 42 "pullscan.rl"
}
#define TK_NO_TOKEN (-1)
#define TK_ERR 128
#define TK_EOF 129
#define TK_Identifier 130
#define TK_Number 131
#define TK_String 132
#define ret_tok( _tok ) token = _tok; s->data = s->ts
int scan( Scanner *s )
{
int token = TK_NO_TOKEN;
int space, readlen;
while ( 1 ) {
if ( s->p == s->pe ) {
printf("scanner: need more data\n");
if ( s->ts == 0 )
s->have = 0;
else {
/* There is data that needs to be shifted over. */
printf("scanner: buffer broken mid token\n");
s->have = s->pe - s->ts;
memmove( s->buf, s->ts, s->have );
s->te -= (s->ts-s->buf);
s->ts = s->buf;
}
s->p = s->buf + s->have;
space = BUFSIZE - s->have;
if ( space == 0 ) {
/* We filled up the buffer trying to scan a token. */
printf("scanner: out of buffer space\n");
return TK_ERR;
}
if ( s->done ) {
printf("scanner: end of file\n");
s->p[0] = 0;
readlen = 1;
}
else {
readlen = fread( s->p, 1, space, s->file );
if ( readlen < space )
s->done = 1;
}
s->pe = s->p + readlen;
}
#line 116 "pullscan.c"
{
if ( ( s->p) == ( s->pe) )
goto _test_eof;
switch ( s->cs )
{
tr0:
#line 125 "pullscan.rl"
{{( s->p) = (( s->te))-1;}{ ret_tok( *s->p ); {( s->p)++; s->cs = 2; goto _out;} }}
goto st2;
tr2:
#line 113 "pullscan.rl"
{ s->te = ( s->p)+1;{ ret_tok( TK_String ); {( s->p)++; s->cs = 2; goto _out;} }}
goto st2;
tr4:
#line 125 "pullscan.rl"
{ s->te = ( s->p)+1;{ ret_tok( *s->p ); {( s->p)++; s->cs = 2; goto _out;} }}
goto st2;
tr5:
#line 121 "pullscan.rl"
{ s->te = ( s->p)+1;{ ret_tok( TK_EOF ); {( s->p)++; s->cs = 2; goto _out;} }}
goto st2;
tr6:
#line 110 "pullscan.rl"
{ s->te = ( s->p)+1;}
goto st2;
tr10:
#line 125 "pullscan.rl"
{ s->te = ( s->p);( s->p)--;{ ret_tok( *s->p ); {( s->p)++; s->cs = 2; goto _out;} }}
goto st2;
tr11:
#line 117 "pullscan.rl"
{ s->te = ( s->p);( s->p)--;{ ret_tok( TK_Number ); {( s->p)++; s->cs = 2; goto _out;} }}
goto st2;
tr12:
#line 107 "pullscan.rl"
{ s->te = ( s->p);( s->p)--;{ ret_tok( TK_Identifier ); {( s->p)++; s->cs = 2; goto _out;} }}
goto st2;
st2:
#line 1 "NONE"
{ s->ts = 0;}
if ( ++( s->p) == ( s->pe) )
goto _test_eof2;
case 2:
#line 1 "NONE"
{ s->ts = ( s->p);}
#line 162 "pullscan.c"
switch( (*( s->p)) ) {
case 0: goto tr5;
case 32: goto tr6;
case 34: goto tr7;
case 95: goto st5;
}
if ( (*( s->p)) < 48 ) {
if ( 9 <= (*( s->p)) && (*( s->p)) <= 10 )
goto tr6;
} else if ( (*( s->p)) > 57 ) {
if ( (*( s->p)) > 90 ) {
if ( 97 <= (*( s->p)) && (*( s->p)) <= 122 )
goto st5;
} else if ( (*( s->p)) >= 65 )
goto st5;
} else
goto st4;
goto tr4;
tr7:
#line 1 "NONE"
{ s->te = ( s->p)+1;}
goto st3;
st3:
if ( ++( s->p) == ( s->pe) )
goto _test_eof3;
case 3:
#line 189 "pullscan.c"
switch( (*( s->p)) ) {
case 34: goto tr2;
case 92: goto st1;
}
goto st0;
st0:
if ( ++( s->p) == ( s->pe) )
goto _test_eof0;
case 0:
switch( (*( s->p)) ) {
case 34: goto tr2;
case 92: goto st1;
}
goto st0;
st1:
if ( ++( s->p) == ( s->pe) )
goto _test_eof1;
case 1:
goto st0;
st4:
if ( ++( s->p) == ( s->pe) )
goto _test_eof4;
case 4:
if ( 48 <= (*( s->p)) && (*( s->p)) <= 57 )
goto st4;
goto tr11;
st5:
if ( ++( s->p) == ( s->pe) )
goto _test_eof5;
case 5:
if ( (*( s->p)) == 95 )
goto st5;
if ( (*( s->p)) < 65 ) {
if ( 48 <= (*( s->p)) && (*( s->p)) <= 57 )
goto st5;
} else if ( (*( s->p)) > 90 ) {
if ( 97 <= (*( s->p)) && (*( s->p)) <= 122 )
goto st5;
} else
goto st5;
goto tr12;
}
_test_eof2: s->cs = 2; goto _test_eof;
_test_eof3: s->cs = 3; goto _test_eof;
_test_eof0: s->cs = 0; goto _test_eof;
_test_eof1: s->cs = 1; goto _test_eof;
_test_eof4: s->cs = 4; goto _test_eof;
_test_eof5: s->cs = 5; goto _test_eof;
_test_eof: {}
if ( ( s->p) == ( s->eof) )
{
switch ( s->cs ) {
case 3: goto tr10;
case 0: goto tr0;
case 1: goto tr0;
case 4: goto tr11;
case 5: goto tr12;
}
}
_out: {}
}
#line 130 "pullscan.rl"
if ( s->cs == Scanner_error )
return TK_ERR;
if ( token != TK_NO_TOKEN ) {
s->len = s->p - s->data;
return token;
}
}
}
int main (int argc, char** argv)
{
Scanner ss;
int tok;
scan_init(&ss, stdin);
while ( 1 ) {
tok = scan (&ss);
if ( tok == TK_EOF ) {
printf ("parser: EOF\n");
break;
}
else if ( tok == TK_ERR ) {
printf ("parser: ERR\n");
break;
}
else {
printf ("parser: %d \"", tok);
fwrite ( ss.data, 1, ss.len, stdout );
printf ("\"\n" );
}
}
return 0;
}
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