1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/* cbox: heap allocated boxed type */
#include <stc/cstr.h>
typedef struct { cstr name, last; } Person;
Person Person_make(const char* name, const char* last) {
return (Person){.name = cstr_from(name), .last = cstr_from(last)};
}
uint64_t Person_hash(const Person* a) {
return cstr_hash(&a->name) ^ cstr_hash(&a->last);
}
int Person_cmp(const Person* a, const Person* b) {
int c = cstr_cmp(&a->name, &b->name);
return c ? c : cstr_cmp(&a->last, &b->last);
}
Person Person_clone(Person p) {
p.name = cstr_clone(p.name);
p.last = cstr_clone(p.last);
return p;
}
void Person_drop(Person* p) {
printf("drop: %s %s\n", cstr_str(&p->name), cstr_str(&p->last));
c_drop(cstr, &p->name, &p->last);
}
#define i_type PBox
#define i_valclass Person // "class" binds _cmp, _clone, _drop functions.
#include <stc/cbox.h>
#define i_type Persons
#define i_valboxed PBox // "arcbox" informs that PBox is a smart pointer.
#include <stc/csset.h>
int main()
{
c_auto (Persons, vec)
c_auto (PBox, p, q)
{
p = PBox_from(Person_make("Laura", "Palmer"));
q = PBox_clone(p);
cstr_assign(&q.get->name, "Leland");
printf("orig: %s %s\n", cstr_str(&p.get->name), cstr_str(&p.get->last));
printf("copy: %s %s\n", cstr_str(&q.get->name), cstr_str(&q.get->last));
Persons_emplace(&vec, Person_make("Dale", "Cooper"));
Persons_emplace(&vec, Person_make("Audrey", "Home"));
// NB! Clone/share p and q in the Persons container.
Persons_push(&vec, PBox_clone(p));
Persons_push(&vec, PBox_clone(q));
c_foreach (i, Persons, vec)
printf("%s %s\n", cstr_str(&i.ref->get->name), cstr_str(&i.ref->get->last));
puts("");
// Look-up Audrey! Create a temporary Person for lookup.
c_with (Person a = Person_make("Audrey", "Home"), Person_drop(&a)) {
const PBox *v = Persons_get(&vec, a); // lookup
if (v) printf("found: %s %s\n", cstr_str(&v->get->name), cstr_str(&v->get->last));
}
puts("");
}
}
|
