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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_004.c (2.56 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/* Generated by re2c */
#line 1 "calc_004.re"
/* re2c lesson 001_upn_calculator, calc_004, (c) M. Boerger 2006 - 2007 */
#line 20 "calc_004.re"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
char * tokendup(const char *t, const char *l)
{
size_t n = l -t + 1;
char *r = (char*)malloc(n);
memmove(r, t, n-1);
r[n] = '\0';
return r;
}
int scan(char *s, int l)
{
char *p = s;
char *q = 0;
char *t;
#define YYCTYPE char
#define YYCURSOR p
#define YYLIMIT (s+l+2)
#define YYMARKER q
#define YYFILL(n) { printf("OOD\n"); return 2; }
for(;;)
{
t = p;
#line 36 "<stdout>"
{
YYCTYPE yych;
if ((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
yych = *YYCURSOR;
switch (yych) {
case 0x00: goto yy9;
case '+': goto yy5;
case '-': goto yy7;
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 yy11;
}
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 yy15;
default: goto yy3;
}
yy3:
#line 57 "calc_004.re"
{ t = tokendup(t, p); printf("Num: %s\n", t); free(t); continue; }
#line 76 "<stdout>"
yy4:
yych = *++YYCURSOR;
goto yy14;
yy5:
++YYCURSOR;
#line 58 "calc_004.re"
{ printf("+\n"); continue; }
#line 84 "<stdout>"
yy7:
++YYCURSOR;
#line 59 "calc_004.re"
{ printf("+\n"); continue; }
#line 89 "<stdout>"
yy9:
++YYCURSOR;
#line 60 "calc_004.re"
{ printf("EOF\n"); return 0; }
#line 94 "<stdout>"
yy11:
++YYCURSOR;
#line 61 "calc_004.re"
{ printf("ERR\n"); return 1; }
#line 99 "<stdout>"
yy13:
++YYCURSOR;
if (YYLIMIT <= YYCURSOR) YYFILL(1);
yych = *YYCURSOR;
yy14:
switch (yych) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9': goto yy13;
default: goto yy3;
}
yy15:
++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 yy15;
default: goto yy17;
}
yy17:
#line 56 "calc_004.re"
{ t = tokendup(t, p); printf("Oct: %s\n", t); free(t); continue; }
#line 138 "<stdout>"
}
#line 62 "calc_004.re"
}
return 0;
}
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 0;
}
}
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