v: implement comptime regular func params traversing

[felipensp]

fn demo(a int, b string) {
}

fn g [T](cb T) {
	mut params := []FunctionParam{}
     $if T is $function {
        $for param in T.params {
			params << param
        }
    }
	assert params.len == 2
	assert params[0].name == 'a'
	assert params[0].typ == 8
	assert params[1].name == 'b'
	assert params[1].typ == 21
}

fn main() {
    g(demo)

	mut params := []FunctionParam{}
	$for param in demo.params {
		params << param
	}
	assert params.len == 2
	assert params[0].name == 'a'
	assert params[0].typ == 8
	assert params[1].name == 'b'
	assert params[1].typ == 21
}

[huly-for-github]

Connected to Huly®: V_0.6-25633

[spytheman]

Excellent work.