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| System | : | Linux MiraNet 3.0.0-14-generic-pae #23-Ubuntu SMP Mon Nov 21 22:07:10 UTC 2011 i686 |
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/
usr/
share/
doc/
re2c/
examples/
lessons/
001_upn_calculator/
- drwxr-xr-x
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Viewing file:  calc_002.c (2.51 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/* Generated by re2c */
#line 1 "calc_002.re"
/* re2c lesson 001_upn_calculator, calc_002, (c) M. Boerger 2006 - 2007 */
#line 19 "calc_002.re"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
int fill(char *p, int n, char **l)
{
while (*++p && n--) ;
* l = p;
return n <= 0;
}
int scan(char *s)
{
char *p = s;
char *l = s;
char *q = 0;
#define YYCTYPE char
#define YYCURSOR p
#define YYLIMIT l
#define YYMARKER q
#define YYFILL(n) { if (!fill(p, n, &l)) break; }
for(;;)
{
#line 32 "<stdout>"
{
YYCTYPE yych;
if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
yych = *YYCURSOR;
switch (yych) {
case 0x00: goto yy10;
case '+': goto yy6;
case '-': goto yy8;
case '0': goto yy2;
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': goto yy4;
default: goto yy12;
}
yy2:
++YYCURSOR;
switch ((yych = *YYCURSOR)) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': goto yy16;
default: goto yy3;
}
yy3:
#line 48 "calc_002.re"
{ printf("Num\n"); continue; }
#line 72 "<stdout>"
yy4:
++YYCURSOR;
yych = *YYCURSOR;
goto yy15;
yy5:
#line 47 "calc_002.re"
{ printf("Num\n"); continue; }
#line 80 "<stdout>"
yy6:
++YYCURSOR;
#line 49 "calc_002.re"
{ printf("+\n"); continue; }
#line 85 "<stdout>"
yy8:
++YYCURSOR;
#line 50 "calc_002.re"
{ printf("+\n"); continue; }
#line 90 "<stdout>"
yy10:
++YYCURSOR;
#line 51 "calc_002.re"
{ printf("EOF\n"); return 0; }
#line 95 "<stdout>"
yy12:
++YYCURSOR;
#line 52 "calc_002.re"
{ printf("ERR\n"); return 1; }
#line 100 "<stdout>"
yy14:
++YYCURSOR;
if (YYLIMIT <= YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy15:
switch (yych) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': goto yy14;
default: goto yy5;
}
yy16:
++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 yy16;
default: goto yy18;
}
yy18:
#line 46 "calc_002.re"
{ printf("Oct\n"); continue; }
#line 139 "<stdout>"
}
#line 53 "calc_002.re"
}
printf("OOD\n"); return 2;
}
int main(int argc, char **argv)
{
if (argc > 1)
{
return scan(argv[1]);
}
else
{
fprintf(stderr, "%s <expr>\n", argv[0]);
return 0;
}
}
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