zig/test/cases/field_parent_ptr.zig
Jimmi Holst Christensen 378d3e4403
Solve the return type ambiguity (#1628)
Changed container and initializer syntax
* <container> { ... } -> <container> . { ... }
* <exrp> { ... } -> <expr> . { ...}
2018-10-15 09:51:15 -04:00

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);
}