61 lines
1.9 KiB
Rust
61 lines
1.9 KiB
Rust
// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// This test ensures we can attach attributes to the formals in all
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// places where generic parameter lists occur, assuming appropriate
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// feature gates are enabled.
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//
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// (We are prefixing all tested features with `rustc_`, to ensure that
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// the attributes themselves won't be rejected by the compiler when
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// using `rustc_attrs` feature. There is a separate compile-fail/ test
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// ensuring that the attribute feature-gating works in this context.)
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#![feature(generic_param_attrs, rustc_attrs)]
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#![allow(dead_code)]
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struct StLt<#[rustc_lt_struct] 'a>(&'a u32);
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struct StTy<#[rustc_ty_struct] I>(I);
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enum EnLt<#[rustc_lt_enum] 'b> { A(&'b u32), B }
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enum EnTy<#[rustc_ty_enum] J> { A(J), B }
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trait TrLt<#[rustc_lt_trait] 'c> { fn foo(&self, _: &'c [u32]) -> &'c u32; }
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trait TrTy<#[rustc_ty_trait] K> { fn foo(&self, _: K); }
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type TyLt<#[rustc_lt_type] 'd> = &'d u32;
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type TyTy<#[rustc_ty_type] L> = (L, );
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impl<#[rustc_lt_inherent] 'e> StLt<'e> { }
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impl<#[rustc_ty_inherent] M> StTy<M> { }
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impl<#[rustc_lt_impl_for] 'f> TrLt<'f> for StLt<'f> {
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fn foo(&self, _: &'f [u32]) -> &'f u32 { loop { } }
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}
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impl<#[rustc_ty_impl_for] N> TrTy<N> for StTy<N> {
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fn foo(&self, _: N) { }
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}
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fn f_lt<#[rustc_lt_fn] 'g>(_: &'g [u32]) -> &'g u32 { loop { } }
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fn f_ty<#[rustc_ty_fn] O>(_: O) { }
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impl<I> StTy<I> {
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fn m_lt<#[rustc_lt_meth] 'h>(_: &'h [u32]) -> &'h u32 { loop { } }
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fn m_ty<#[rustc_ty_meth] P>(_: P) { }
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}
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fn hof_lt<Q>(_: Q)
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where Q: for <#[rustc_lt_hof] 'i> Fn(&'i [u32]) -> &'i u32
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{
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}
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fn main() {
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}
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