2014-07-04 21:41:54 -05:00
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// Copyright 2012-2013 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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2014-07-06 23:58:30 -05:00
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//! Some stuff used by rustc that doesn't have many dependencies
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//!
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//! Originally extracted from rustc::back, which was nominally the
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//! compiler 'backend', though LLVM is rustc's backend, so rustc_back
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//! is really just odds-and-ends relating to code gen and linking.
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//! This crate mostly exists to make rustc smaller, so we might put
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//! more 'stuff' here in the future. It does not have a dependency on
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//! rustc_llvm.
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//!
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//! FIXME: Split this into two crates: one that has deps on syntax, and
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//! one that doesn't; the one that doesn't might get decent parallel
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//! build speedups.
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2015-03-05 10:53:51 -06:00
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// Do not remove on snapshot creation. Needed for bootstrap. (Issue #22364)
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#![cfg_attr(stage0, feature(custom_attribute))]
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2014-07-04 21:41:54 -05:00
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#![crate_name = "rustc_back"]
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2015-01-22 20:22:03 -06:00
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#![unstable(feature = "rustc_private")]
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Preliminary feature staging
This partially implements the feature staging described in the
[release channel RFC][rc]. It does not yet fully conform to the RFC as
written, but does accomplish its goals sufficiently for the 1.0 alpha
release.
It has three primary user-visible effects:
* On the nightly channel, use of unstable APIs generates a warning.
* On the beta channel, use of unstable APIs generates a warning.
* On the beta channel, use of feature gates generates a warning.
Code that does not trigger these warnings is considered 'stable',
modulo pre-1.0 bugs.
Disabling the warnings for unstable APIs continues to be done in the
existing (i.e. old) style, via `#[allow(...)]`, not that specified in
the RFC. I deem this marginally acceptable since any code that must do
this is not using the stable dialect of Rust.
Use of feature gates is itself gated with the new 'unstable_features'
lint, on nightly set to 'allow', and on beta 'warn'.
The attribute scheme used here corresponds to an older version of the
RFC, with the `#[staged_api]` crate attribute toggling the staging
behavior of the stability attributes, but the user impact is only
in-tree so I'm not concerned about having to make design changes later
(and I may ultimately prefer the scheme here after all, with the
`#[staged_api]` crate attribute).
Since the Rust codebase itself makes use of unstable features the
compiler and build system to a midly elaborate dance to allow it to
bootstrap while disobeying these lints (which would otherwise be
errors because Rust builds with `-D warnings`).
This patch includes one significant hack that causes a
regression. Because the `format_args!` macro emits calls to unstable
APIs it would trigger the lint. I added a hack to the lint to make it
not trigger, but this in turn causes arguments to `println!` not to be
checked for feature gates. I don't presently understand macro
expansion well enough to fix. This is bug #20661.
Closes #16678
[rc]: https://github.com/rust-lang/rfcs/blob/master/text/0507-release-channels.md
2015-01-06 08:26:08 -06:00
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#![staged_api]
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2014-07-04 21:41:54 -05:00
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#![crate_type = "dylib"]
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#![crate_type = "rlib"]
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#![doc(html_logo_url = "http://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
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html_favicon_url = "http://www.rust-lang.org/favicon.ico",
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2014-10-09 12:47:22 -05:00
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html_root_url = "http://doc.rust-lang.org/nightly/")]
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2015-01-30 14:26:44 -06:00
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#![feature(box_syntax)]
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2015-01-22 20:22:03 -06:00
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#![feature(collections)]
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#![feature(core)]
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#![feature(hash)]
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2015-01-30 14:26:44 -06:00
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#![feature(int_uint)]
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2015-02-17 13:05:44 -06:00
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#![feature(old_io)]
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2015-01-22 20:22:03 -06:00
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#![feature(os)]
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2015-02-17 13:05:44 -06:00
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#![feature(old_path)]
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2015-01-22 20:22:03 -06:00
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#![feature(rustc_private)]
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2015-01-30 14:26:44 -06:00
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#![feature(staged_api)]
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2015-02-23 12:59:17 -06:00
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#![feature(path)]
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2014-12-31 22:43:46 -06:00
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2014-07-04 21:41:54 -05:00
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extern crate syntax;
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2014-07-07 00:21:04 -05:00
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extern crate serialize;
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2015-01-06 11:24:46 -06:00
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#[macro_use] extern crate log;
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2014-07-04 21:41:54 -05:00
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pub mod abi;
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2014-07-06 23:50:37 -05:00
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pub mod archive;
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2014-07-04 21:41:54 -05:00
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pub mod arm;
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2014-07-07 00:13:55 -05:00
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pub mod fs;
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2014-07-04 21:41:54 -05:00
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pub mod mips;
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pub mod mipsel;
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2014-07-06 20:01:16 -05:00
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pub mod rpath;
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2014-07-07 00:21:04 -05:00
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pub mod sha2;
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2014-07-04 21:41:54 -05:00
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pub mod svh;
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pub mod target_strs;
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pub mod x86;
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pub mod x86_64;
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2014-07-23 13:56:36 -05:00
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pub mod target;
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