Current File : //usr/share/doc/re2c/examples/c/eof/04_generic_api_sentinel.c
/* Generated by re2c */
#line 1 "c/eof/04_generic_api_sentinel.re"
// re2c $INPUT -o $OUTPUT
#include <assert.h>
#include <stdlib.h>
#include <string.h>
static int lex(const char *str, unsigned int len) {
// For the sake of example create a string without terminating null.
char *buf = (char*) malloc(len);
memcpy(buf, str, len);
const char *cur = buf, *lim = buf + len;
int count = 0;
for (;;) {
#line 19 "c/eof/04_generic_api_sentinel.c"
{
char yych;
yych = cur < lim ? *cur : 0;
switch (yych) {
case 0x00: goto yy1;
case ' ': goto yy3;
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z': goto yy5;
default: goto yy2;
}
yy1:
++cur;
#line 24 "c/eof/04_generic_api_sentinel.re"
{ break;; }
#line 58 "c/eof/04_generic_api_sentinel.c"
yy2:
++cur;
#line 23 "c/eof/04_generic_api_sentinel.re"
{ count = -1; break; }
#line 63 "c/eof/04_generic_api_sentinel.c"
yy3:
++cur;
yych = cur < lim ? *cur : 0;
switch (yych) {
case ' ': goto yy3;
default: goto yy4;
}
yy4:
#line 26 "c/eof/04_generic_api_sentinel.re"
{ continue; }
#line 74 "c/eof/04_generic_api_sentinel.c"
yy5:
++cur;
yych = cur < lim ? *cur : 0;
switch (yych) {
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
case 'g':
case 'h':
case 'i':
case 'j':
case 'k':
case 'l':
case 'm':
case 'n':
case 'o':
case 'p':
case 'q':
case 'r':
case 's':
case 't':
case 'u':
case 'v':
case 'w':
case 'x':
case 'y':
case 'z': goto yy5;
default: goto yy6;
}
yy6:
#line 25 "c/eof/04_generic_api_sentinel.re"
{ ++count; continue;; }
#line 110 "c/eof/04_generic_api_sentinel.c"
}
#line 27 "c/eof/04_generic_api_sentinel.re"
}
free(buf);
return count;
}
#define TEST(s, r) assert(lex(s, sizeof(s) - 1) == r)
int main() {
TEST("", 0);
TEST("one two three ", 3);
TEST("f0ur", -1);
return 0;
}
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