blob: 540471a356f2c3ca83ceb52140df4855c65ac3ef (
plain) (
blame)
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
|
namespace;
include rt, run;
// printing any struct with no printing code: the heap knows each object's
// type, and reflection walks its fields
struct person { char* name; int age; };
struct item { char* name; int count; person* owner; };
void dump(p) {
let t = rt.typeof_obj(p), i = 0;
if (!t) { rt.put_s("?"); return; }
run.tprint(t); rt.put_s(" { ");
while (i < run.tnfields(t)) {
let ft = run.tftype(t, i), v = p[run.tfoff(t, i)];
if (i) rt.put_s(", ");
rt.put_s(run.tfname(t, i)); rt.put_s(": ");
if (run.tkind(ft) == run.TY_PTR && run.telem(ft) == typeof(char)) { rt.put_c('"'); rt.put_s(v); rt.put_c('"'); }
else if (run.tkind(ft) == run.TY_PTR) { if (v) dump(v); else rt.put_s("null"); }
else rt.put_n(v);
i++;
}
rt.put_s(" }");
return;
}
void main() {
person* ana = rt.new(person);
ana.name = "ana"; ana.age = 30;
item* lamp = rt.new(item);
lamp.name = "lamp"; lamp.count = 3; lamp.owner = ana;
dump(lamp); rt.put_c(10);
rt.free(lamp);
return;
}
|
