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/* Generated by re2c */
#line 1 "calc_001.re"
// re2c $INPUT -o $OUTPUT
/* re2c lesson 001_upn_calculator, calc_001, (c) M. Boerger 2006 - 2007 */
#line 43 "calc_001.re"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int scan(char *s, int l)
{
char *p = s;
char *q = 0;
#define YYCTYPE char
#define YYCURSOR p
#define YYLIMIT (s+l)
#define YYMARKER q
#define YYFILL(n)
for(;;)
{
#line 26 "calc_001.c"
{
YYCTYPE yych;
if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
yych = *YYCURSOR;
switch (yych) {
case 0x00: goto yy1;
case '+': goto yy3;
case '-': goto yy4;
case '0': goto yy5;
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': goto yy7;
default: goto yy2;
}
yy1:
++YYCURSOR;
#line 68 "calc_001.re"
{ printf("EOF\n"); return 0; }
#line 51 "calc_001.c"
yy2:
++YYCURSOR;
#line 69 "calc_001.re"
{ printf("ERR\n"); return 1; }
#line 56 "calc_001.c"
yy3:
++YYCURSOR;
#line 66 "calc_001.re"
{ printf("+\n"); continue; }
#line 61 "calc_001.c"
yy4:
++YYCURSOR;
#line 67 "calc_001.re"
{ printf("-\n"); continue; }
#line 66 "calc_001.c"
yy5:
yych = *++YYCURSOR;
switch (yych) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': goto yy9;
default: goto yy6;
}
yy6:
#line 65 "calc_001.re"
{ printf("Num\n"); continue; }
#line 85 "calc_001.c"
yy7:
++YYCURSOR;
if (YYLIMIT <= YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
switch (yych) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': goto yy7;
default: goto yy8;
}
yy8:
#line 64 "calc_001.re"
{ printf("Num\n"); continue; }
#line 106 "calc_001.c"
yy9:
++YYCURSOR;
if (YYLIMIT <= YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
switch (yych) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': goto yy9;
default: goto yy10;
}
yy10:
#line 63 "calc_001.re"
{ printf("Oct\n"); continue; }
#line 127 "calc_001.c"
}
#line 70 "calc_001.re"
}
}
int main(int argc, char **argv)
{
if (argc > 1)
{
return scan(argv[1], strlen(argv[1]));
}
else
{
fprintf(stderr, "%s <expr>\n", argv[0]);
return 1;
}
}
|
