61 lines
1013 B
Rust
61 lines
1013 B
Rust
//@ edition: 2021
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//@ run-pass
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#![feature(derive_from)]
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use core::from::From;
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#[derive(From)]
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struct TupleSimple(u32);
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#[derive(From)]
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struct TupleNonPathType([u32; 4]);
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#[derive(From)]
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struct TupleWithRef<'a, T>(&'a T);
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#[derive(From)]
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struct TupleSWithBound<T: std::fmt::Debug>(T);
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#[derive(From)]
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struct RawIdentifier {
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r#use: u32,
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}
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#[derive(From)]
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struct Field {
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foo: bool,
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}
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#[derive(From)]
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struct Const<const C: usize> {
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foo: [u32; C],
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}
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fn main() {
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let a = 42u32;
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let b: [u32; 4] = [0, 1, 2, 3];
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let c = true;
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let s1: TupleSimple = a.into();
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assert_eq!(s1.0, a);
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let s2: TupleNonPathType = b.into();
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assert_eq!(s2.0, b);
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let s3: TupleWithRef<u32> = (&a).into();
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assert_eq!(s3.0, &a);
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let s4: TupleSWithBound<u32> = a.into();
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assert_eq!(s4.0, a);
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let s5: RawIdentifier = a.into();
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assert_eq!(s5.r#use, a);
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let s6: Field = c.into();
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assert_eq!(s6.foo, c);
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let s7: Const<4> = b.into();
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assert_eq!(s7.foo, b);
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}
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