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Implement feature-gating for the compiler

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A few features are now hidden behind various #[feature(...)] directives. These
include struct-like enum variants, glob imports, and macro_rules! invocations.

Closes #9304
Closes #9305
Closes #9306
Closes #9331
This commit is contained in:
Alex Crichton 2013-10-02 18:10:16 -07:00
parent acf9783879
commit dd98f7089f
15 changed files with 320 additions and 0 deletions
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24
src/test/compile-fail/gated-bad-feature.rs Normal file
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// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#[feature(
foo_bar_baz,
foo(bar),
foo = "baz"
)];
//~^^^^ ERROR: unknown feature
//~^^^^ ERROR: malformed feature
//~^^^^ ERROR: malformed feature
#[feature]; //~ ERROR: malformed feature
#[feature = "foo"]; //~ ERROR: malformed feature
#[feature(test_removed_feature)]; //~ ERROR: feature has been removed
#[feature(test_accepted_feature)]; //~ WARNING: feature has added

14
src/test/compile-fail/gated-glob-imports.rs Normal file
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// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::*;
//~^ ERROR: glob import statements are experimental
fn main() {}

14
src/test/compile-fail/gated-macro-rules.rs Normal file
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// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
macro_rules! foo(() => ())
//~^ ERROR: macro definitions are not stable enough for use
fn main() {}

15
src/test/compile-fail/gated-struct-enums.rs Normal file
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// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
enum A { B { foo: int } }
//~^ ERROR: enum struct variants are experimental
fn main() {}