// run-pass #![allow(dead_code)] // General test that function items in static blocks // can be generated with a macro. struct MyType { desc: &'static str, data: usize, code: fn(usize, usize) -> usize } impl MyType { fn eval(&self, a: usize) -> usize { (self.code)(self.data, a) } } macro_rules! codegen { ($e:expr, $v:expr) => { { fn generated(a: usize, b: usize) -> usize { a - ($e * b) } MyType { desc: "test", data: $v, code: generated } } } } static GENERATED_CODE_1: MyType = codegen!(2, 100); static GENERATED_CODE_2: MyType = codegen!(5, 1000); pub fn main() { assert_eq!(GENERATED_CODE_1.eval(10), 80); assert_eq!(GENERATED_CODE_2.eval(100), 500); }