diff options
Diffstat (limited to 'src/test/ui/array-slice-vec/subslice-patterns-const-eval.rs')
| -rw-r--r-- | src/test/ui/array-slice-vec/subslice-patterns-const-eval.rs | 95 | 
1 files changed, 0 insertions, 95 deletions
| diff --git a/src/test/ui/array-slice-vec/subslice-patterns-const-eval.rs b/src/test/ui/array-slice-vec/subslice-patterns-const-eval.rs deleted file mode 100644 index 0b793fa0120..00000000000 --- a/src/test/ui/array-slice-vec/subslice-patterns-const-eval.rs +++ /dev/null @@ -1,95 +0,0 @@ -// Test that array subslice patterns are correctly handled in const evaluation. - -// run-pass - -#[derive(PartialEq, Debug, Clone)] -struct N(u8); - -#[derive(PartialEq, Debug, Clone)] -struct Z; - -macro_rules! n { - ($($e:expr),* $(,)?) => { - [$(N($e)),*] - } -} - -// This macro has an unused variable so that it can be repeated base on the -// number of times a repeated variable (`$e` in `z`) occurs. -macro_rules! zed { - ($e:expr) => { Z } -} - -macro_rules! z { - ($($e:expr),* $(,)?) => { - [$(zed!($e)),*] - } -} - -// Compare constant evaluation and runtime evaluation of a given expression. -macro_rules! compare_evaluation { - ($e:expr, $t:ty $(,)?) => {{ - const CONST_EVAL: $t = $e; - const fn const_eval() -> $t { $e } - static CONST_EVAL2: $t = const_eval(); - let runtime_eval = $e; - assert_eq!(CONST_EVAL, runtime_eval); - assert_eq!(CONST_EVAL2, runtime_eval); - }} -} - -// Repeat `$test`, substituting the given macro variables with the given -// identifiers. -// -// For example: -// -// repeat! { -// ($name); X; Y: -// struct $name; -// } -// -// Expands to: -// -// struct X; struct Y; -// -// This is used to repeat the tests using both the `N` and `Z` -// types. -macro_rules! repeat { - (($($dollar:tt $placeholder:ident)*); $($($values:ident),+);*: $($test:tt)*) => { - macro_rules! single { - ($($dollar $placeholder:ident),*) => { $($test)* } - } - $(single!($($values),+);)* - } -} - -fn main() { - repeat! { - ($arr $Ty); n, N; z, Z: - compare_evaluation!({ let [_, x @ .., _] = $arr!(1, 2, 3, 4); x }, [$Ty; 2]); - compare_evaluation!({ let [_, ref x @ .., _] = $arr!(1, 2, 3, 4); x }, &'static [$Ty; 2]); - compare_evaluation!({ let [_, x @ .., _] = &$arr!(1, 2, 3, 4); x }, &'static [$Ty; 2]); - - compare_evaluation!({ let [_, _, x @ .., _, _] = $arr!(1, 2, 3, 4); x }, [$Ty; 0]); - compare_evaluation!( - { let [_, _, ref x @ .., _, _] = $arr!(1, 2, 3, 4); x }, - &'static [$Ty; 0], - ); - compare_evaluation!( - { let [_, _, x @ .., _, _] = &$arr!(1, 2, 3, 4); x }, - &'static [$Ty; 0], - ); - - compare_evaluation!({ let [_, .., x] = $arr!(1, 2, 3, 4); x }, $Ty); - compare_evaluation!({ let [_, .., ref x] = $arr!(1, 2, 3, 4); x }, &'static $Ty); - compare_evaluation!({ let [_, _y @ .., x] = &$arr!(1, 2, 3, 4); x }, &'static $Ty); - } - - compare_evaluation!({ let [_, .., N(x)] = n!(1, 2, 3, 4); x }, u8); - compare_evaluation!({ let [_, .., N(ref x)] = n!(1, 2, 3, 4); x }, &'static u8); - compare_evaluation!({ let [_, .., N(x)] = &n!(1, 2, 3, 4); x }, &'static u8); - - compare_evaluation!({ let [N(x), .., _] = n!(1, 2, 3, 4); x }, u8); - compare_evaluation!({ let [N(ref x), .., _] = n!(1, 2, 3, 4); x }, &'static u8); - compare_evaluation!({ let [N(x), .., _] = &n!(1, 2, 3, 4); x }, &'static u8); -} | 
