zig/test/behavior/fn_delegation.zig
2022-05-27 16:43:11 -04:00

43 lines
830 B
Zig

const builtin = @import("builtin");
const expect = @import("std").testing.expect;
const Foo = struct {
a: u64 = 10,
fn one(self: Foo) u64 {
return self.a + 1;
}
const two = __two;
fn __two(self: Foo) u64 {
return self.a + 2;
}
const three = __three;
const four = custom(Foo, 4);
};
fn __three(self: Foo) u64 {
return self.a + 3;
}
fn custom(comptime T: type, comptime num: u64) fn (T) u64 {
return struct {
fn function(self: T) u64 {
return self.a + num;
}
}.function;
}
test "fn delegation" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
const foo = Foo{};
try expect(foo.one() == 11);
try expect(foo.two() == 12);
try expect(foo.three() == 13);
try expect(foo.four() == 14);
}