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allow h_bind's function argument to return NULL as a shortcut for h_nothing_p()

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This commit is contained in:
Sven M. Hallberg 2015-01-23 22:06:43 +01:00
parent 42d51ed479
commit 78266af453
3 changed files with 21 additions and 11 deletions
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27
src/t_parser.c
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@ -569,18 +569,23 @@ static void test_permutation(gconstpointer backend) {
}
static HParser *f_test_bind(const HParsedToken *p, void *env) {
uint8_t one = (uintptr_t)env;
assert(p);
assert(p->token_type == TT_SEQUENCE);
uint8_t one = (uintptr_t)env;
assert(p);
assert(p->token_type == TT_SEQUENCE);
int v=0;
for(size_t i=0; i<p->seq->used; i++) {
assert(p->seq->elements[i]->token_type == TT_UINT);
v = v*10 + p->seq->elements[i]->uint - '0';
}
int v=0;
for(size_t i=0; i<p->seq->used; i++) {
assert(p->seq->elements[i]->token_type == TT_UINT);
v = v*10 + p->seq->elements[i]->uint - '0';
}
return h_ch(one - 1 + v);
if(v > 26)
return h_nothing_p(); // fail
else if(v > 127)
return NULL; // equivalent to the above
else
return h_ch(one - 1 + v);
}
static void test_bind(gconstpointer backend) {
HParserBackend be = (HParserBackend)GPOINTER_TO_INT(backend);
@ -594,6 +599,8 @@ static void test_bind(gconstpointer backend) {
g_check_parse_failed(p, be, "1x", 2);
g_check_parse_failed(p, be, "29y", 3);
g_check_parse_failed(p, be, "@", 1);
g_check_parse_failed(p, be, "27{", 3);
g_check_parse_failed(p, be, "272{", 4);
}
void register_parser_tests(void) {