42 lines
790 B
Zig
42 lines
790 B
Zig
const assert = @import("std").debug.assert;
|
|
|
|
test "@fieldParentPtr non-first field" {
|
|
testParentFieldPtr(&foo.c);
|
|
comptime testParentFieldPtr(&foo.c);
|
|
}
|
|
|
|
test "@fieldParentPtr first field" {
|
|
testParentFieldPtrFirst(&foo.a);
|
|
comptime testParentFieldPtrFirst(&foo.a);
|
|
}
|
|
|
|
const Foo = struct {
|
|
a: bool,
|
|
b: f32,
|
|
c: i32,
|
|
d: i32,
|
|
};
|
|
|
|
const foo = Foo {
|
|
.a = true,
|
|
.b = 0.123,
|
|
.c = 1234,
|
|
.d = -10,
|
|
};
|
|
|
|
fn testParentFieldPtr(c: &const i32) void {
|
|
assert(c == &foo.c);
|
|
|
|
const base = @fieldParentPtr(Foo, "c", c);
|
|
assert(base == &foo);
|
|
assert(&base.c == c);
|
|
}
|
|
|
|
fn testParentFieldPtrFirst(a: &const bool) void {
|
|
assert(a == &foo.a);
|
|
|
|
const base = @fieldParentPtr(Foo, "a", a);
|
|
assert(base == &foo);
|
|
assert(&base.a == a);
|
|
}
|