mirror of https://github.com/rust-lang/rust
41 lines
830 B
Rust
41 lines
830 B
Rust
pub struct ExternFoo;
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pub trait ExternTrait {
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const CONST: u32;
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type Assoc;
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}
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impl ExternTrait for ExternFoo {
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const CONST: u32 = 0;
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type Assoc = ExternFoo;
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}
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#[macro_export]
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macro_rules! external { () => {
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mod bar {
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#[derive(Double)]
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struct Bar($crate::ExternFoo);
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}
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mod qself {
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#[derive(Double)]
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struct QSelf(<$crate::ExternFoo as $crate::ExternTrait>::Assoc);
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}
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mod qself_recurse {
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#[derive(Double)]
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struct QSelfRecurse(<
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<$crate::ExternFoo as $crate::ExternTrait>::Assoc
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as $crate::ExternTrait>::Assoc
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);
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}
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mod qself_in_const {
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#[derive(Double)]
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#[repr(u32)]
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enum QSelfInConst {
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Variant = <$crate::ExternFoo as $crate::ExternTrait>::CONST,
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}
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}
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} }
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