/// A simple static assertion macro. The first argument should be a unique | |
/// ALL_CAPS identifier that describes the condition. | |
#[macro_export] | |
#[allow_internal_unstable(type_ascription)] | |
macro_rules! static_assert { | |
($name:ident: $test:expr) => { | |
// Use the bool to access an array such that if the bool is false, the access | |
// is out-of-bounds. | |
#[allow(dead_code)] | |
static $name: () = [()][!($test: bool) as usize]; | |
} | |
} |