Tie stability attributes to feature gates

src/compiletest/compiletest.rs

@@ -13,7 +13,7 @@
 #![feature(slicing_syntax, unboxed_closures)]
 #![feature(box_syntax)]
 #![feature(int_uint)]
-#![allow(unstable)]
+#![feature(unnamed_feature)]
 
 #![deny(warnings)]
 

src/driver/driver.rs

@@ -8,7 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![allow(unstable)]
+#![allow(unknown_features)]
+#![feature(unnamed_feature)]
 
 #[cfg(rustdoc)]
 extern crate "rustdoc" as this;

src/liballoc/arc.rs

@@ -608,7 +608,6 @@ impl<H: Hasher, T: Hash<H>> Hash<H> for Arc<T> {
 }
 
 #[cfg(test)]
-#[allow(unstable)]
 mod tests {
     use std::clone::Clone;
     use std::sync::mpsc::channel;

src/liballoc/lib.rs

@@ -66,10 +66,10 @@
 
 #![no_std]
 #![allow(unknown_features)]
-#![allow(unstable)]
 #![feature(lang_items, unsafe_destructor)]
 #![feature(box_syntax)]
 #![feature(optin_builtin_traits)]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
 
 #[macro_use]

src/liballoc/rc.rs

@@ -937,7 +937,6 @@ impl<T> RcBoxPtr<T> for Weak<T> {
 }
 
 #[cfg(test)]
-#[allow(unstable)]
 mod tests {
     use super::{Rc, Weak, weak_count, strong_count};
     use std::cell::RefCell;

src/libarena/lib.rs

@@ -32,9 +32,9 @@
 #![feature(unsafe_destructor)]
 #![feature(unboxed_closures)]
 #![feature(box_syntax)]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
 #![allow(missing_docs)]
-#![allow(unstable)]
 
 extern crate alloc;
 

src/libcollections/lib.rs

@@ -26,8 +26,8 @@
 #![feature(unsafe_destructor, slicing_syntax)]
 #![feature(box_syntax)]
 #![feature(unboxed_closures)]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
-#![allow(unstable)]
 #![no_std]
 
 #[macro_use]

src/libcore/simd.rs

@@ -19,7 +19,6 @@
 //! provided beyond this module.
 //!
 //! ```rust
-//! #[allow(unstable)];
 //!
 //! fn main() {
 //!     use std::simd::f32x4;

src/libcore/slice.rs

@@ -1433,7 +1433,6 @@ pub mod bytes {
 
     impl MutableByteVector for [u8] {
         #[inline]
-        #[allow(unstable)]
         fn set_memory(&mut self, value: u8) {
             unsafe { ptr::set_memory(self.as_mut_ptr(), value, self.len()) };
         }

src/libcoretest/lib.rs

@@ -11,8 +11,8 @@
 #![feature(unsafe_destructor, slicing_syntax)]
 #![feature(unboxed_closures)]
 #![feature(box_syntax)]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
-#![allow(unstable)]
 
 extern crate core;
 extern crate test;

src/libflate/lib.rs

@@ -18,7 +18,7 @@
 #![unstable(feature = "unnamed_feature", since = "1.0.0")]
 #![staged_api]
 #![allow(unknown_features)] #![feature(int_uint)]
-#![allow(unstable)]
+#![feature(unnamed_feature)]
 #![crate_type = "rlib"]
 #![crate_type = "dylib"]
 #![doc(html_logo_url = "http://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",

src/libfmt_macros/lib.rs

@@ -26,7 +26,7 @@
 
 #![feature(slicing_syntax)]
 #![allow(unknown_features)] #![feature(int_uint)]
-#![allow(unstable)]
+#![feature(unnamed_feature)]
 
 pub use self::Piece::*;
 pub use self::Position::*;

src/libgetopts/lib.rs

@@ -88,8 +88,8 @@
        html_root_url = "http://doc.rust-lang.org/nightly/",
        html_playground_url = "http://play.rust-lang.org/")]
 #![feature(slicing_syntax)]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
-#![allow(unstable)]
 #![deny(missing_docs)]
 
 #[cfg(test)] #[macro_use] extern crate log;

src/libgraphviz/lib.rs

@@ -273,8 +273,8 @@
        html_favicon_url = "http://www.rust-lang.org/favicon.ico",
        html_root_url = "http://doc.rust-lang.org/nightly/")]
 #![feature(slicing_syntax)]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
-#![allow(unstable)]
 
 use self::LabelText::*;
 

src/liblibc/lib.rs

@@ -13,8 +13,8 @@
 #![cfg_attr(not(feature = "cargo-build"),
             unstable(feature = "unnamed_feature", since = "1.0.0"))]
 #![cfg_attr(not(feature = "cargo-build"), staged_api)]
+#![cfg_attr(not(feature = "cargo-build"), feature(unnamed_feature))]
 #![allow(unknown_features)] #![feature(int_uint)]
-#![allow(unstable)]
 #![no_std]
 #![doc(html_logo_url = "http://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
        html_favicon_url = "http://www.rust-lang.org/favicon.ico",
@@ -74,7 +74,7 @@
 //! one from Berkeley after the lawsuits died down and the CSRG dissolved.
 
 #![allow(bad_style, raw_pointer_derive)]
-
+#![cfg_attr(not(feature = "cargo-build"), feature(unnamed_feature))]
 #[cfg(feature = "cargo-build")] extern crate "std" as core;
 #[cfg(not(feature = "cargo-build"))] extern crate core;
 

src/liblog/lib.rs

@@ -169,8 +169,8 @@
 #![allow(unknown_features)]
 #![feature(slicing_syntax)]
 #![feature(box_syntax)]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
-#![allow(unstable)]
 #![deny(missing_docs)]
 
 extern crate regex;

src/librand/lib.rs

@@ -22,8 +22,8 @@
        html_favicon_url = "http://www.rust-lang.org/favicon.ico",
        html_root_url = "http://doc.rust-lang.org/nightly/",
        html_playground_url = "http://play.rust-lang.org/")]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
-#![allow(unstable)]
 #![no_std]
 #![unstable(feature = "unnamed_feature", since = "1.0.0")]
 #![staged_api]

src/librbml/lib.rs

@@ -26,8 +26,8 @@
        html_playground_url = "http://play.rust-lang.org/")]
 #![allow(unknown_features)]
 #![feature(slicing_syntax)]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
-#![allow(unstable)]
 
 extern crate serialize;
 #[macro_use] extern crate log;

src/libregex/lib.rs

@@ -25,9 +25,9 @@
        html_playground_url = "http://play.rust-lang.org/")]
 
 #![allow(unknown_features)]
-#![allow(unstable)]
 #![feature(slicing_syntax)]
 #![feature(box_syntax)]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
 #![deny(missing_docs)]
 

src/libregex/re.rs

@@ -410,7 +410,6 @@ pub struct Captures<'t> {
 }
 
 impl<'t> Captures<'t> {
-    #[allow(unstable)]
     fn new(re: &Regex, search: &'t str, locs: CaptureLocs)
           -> Option<Captures<'t>> {
         if !has_match(&locs) {

src/librustc/lib.rs

@@ -27,9 +27,9 @@
 #![feature(quote)]
 #![feature(slicing_syntax, unsafe_destructor)]
 #![feature(box_syntax)]
+#![feature(unnamed_feature)]
 #![allow(unknown_features)] #![feature(int_uint)]
 #![feature(rustc_diagnostic_macros)]
-#![allow(unstable)]
 
 extern crate arena;
 extern crate flate;

src/librustc/lint/builtin.rs

@@ -44,7 +44,7 @@ use std::{i8, i16, i32, i64, u8, u16, u32, u64, f32, f64};
 use syntax::{abi, ast, ast_map};
 use syntax::ast_util::is_shift_binop;
 use syntax::attr::{self, AttrMetaMethods};
-use syntax::codemap::{Span, DUMMY_SP};
+use syntax::codemap::Span;
 use syntax::parse::token;
 use syntax::ast::{TyIs, TyUs, TyI8, TyU8, TyI16, TyU16, TyI32, TyU32, TyI64, TyU64};
 use syntax::ast_util;
@@ -1628,32 +1628,15 @@ declare_lint! {
     "detects use of #[deprecated] items"
 }
 
-declare_lint! {
-    UNSTABLE,
-    Warn,
-    "detects use of #[unstable] items (incl. items with no stability attribute)"
-}
-
-/// Checks for use of items with `#[deprecated]`, `#[unstable]` and
-/// `#[unstable]` attributes, or no stability attribute.
+/// Checks for use of items with `#[deprecated]` attributes
 #[derive(Copy)]
 pub struct Stability;
 
 impl Stability {
-    fn lint(&self, cx: &Context, id: ast::DefId, span: Span) {
-
-        if !stability::is_staged_api(cx.tcx, id) { return  }
+    fn lint(&self, cx: &Context, _id: ast::DefId, span: Span, stability: &Option<attr::Stability>) {
 
-        let ref stability = stability::lookup(cx.tcx, id);
-        let cross_crate = !ast_util::is_local(id);
-
-        // stability attributes are promises made across crates; only
-        // check DEPRECATED for crate-local usage.
+        // deprecated attributes apply in-crate and cross-crate
         let (lint, label) = match *stability {
-            // no stability attributes == Unstable
-            None if cross_crate => (UNSTABLE, "unmarked"),
-            Some(attr::Stability { level: attr::Unstable, .. }) if cross_crate =>
-                (UNSTABLE, "unstable"),
             Some(attr::Stability { level: attr::Deprecated, .. }) =>
                 (DEPRECATED, "deprecated"),
             _ => return
@@ -1673,100 +1656,26 @@ impl Stability {
             cx.span_lint(lint, span, &msg[]);
         }
     }
-
-
-    fn is_internal(&self, cx: &Context, span: Span) -> bool {
-        cx.tcx.sess.codemap().span_is_internal(span)
-    }
-
 }
 
 impl LintPass for Stability {
     fn get_lints(&self) -> LintArray {
-        lint_array!(DEPRECATED, UNSTABLE)
+        lint_array!(DEPRECATED)
     }
 
     fn check_view_item(&mut self, cx: &Context, item: &ast::ViewItem) {
-        // compiler-generated `extern crate` statements have a dummy span.
-        if item.span == DUMMY_SP { return }
-
-        let id = match item.node {
-            ast::ViewItemExternCrate(_, _, id) => id,
-            ast::ViewItemUse(..) => return,
-        };
-        let cnum = match cx.tcx.sess.cstore.find_extern_mod_stmt_cnum(id) {
-            Some(cnum) => cnum,
-            None => return,
-        };
-        let id = ast::DefId { krate: cnum, node: ast::CRATE_NODE_ID };
-        self.lint(cx, id, item.span);
-    }
-
-    fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
-        if self.is_internal(cx, e.span) { return; }
-
-        let mut span = e.span;
-
-        let id = match e.node {
-            ast::ExprPath(..) | ast::ExprQPath(..) | ast::ExprStruct(..) => {
-                match cx.tcx.def_map.borrow().get(&e.id) {
-                    Some(&def) => def.def_id(),
-                    None => return
-                }
-            }
-            ast::ExprMethodCall(i, _, _) => {
-                span = i.span;
-                let method_call = ty::MethodCall::expr(e.id);
-                match cx.tcx.method_map.borrow().get(&method_call) {
-                    Some(method) => {
-                        match method.origin {
-                            ty::MethodStatic(def_id) => {
-                                def_id
-                            }
-                            ty::MethodStaticUnboxedClosure(def_id) => {
-                                def_id
-                            }
-                            ty::MethodTypeParam(ty::MethodParam {
-                                ref trait_ref,
-                                method_num: index,
-                                ..
-                            }) |
-                            ty::MethodTraitObject(ty::MethodObject {
-                                ref trait_ref,
-                                method_num: index,
-                                ..
-                            }) => {
-                                ty::trait_item(cx.tcx, trait_ref.def_id, index).def_id()
-                            }
-                        }
-                    }
-                    None => return
-                }
-            }
-            _ => return
-        };
-
-        self.lint(cx, id, span);
+        stability::check_view_item(cx.tcx, item,
+                                   &mut |id, sp, stab| self.lint(cx, id, sp, stab));
     }
 
     fn check_item(&mut self, cx: &Context, item: &ast::Item) {
-        if self.is_internal(cx, item.span) { return }
+        stability::check_item(cx.tcx, item,
+                              &mut |id, sp, stab| self.lint(cx, id, sp, stab));
+    }
 
-        match item.node {
-            ast::ItemTrait(_, _, ref supertraits, _) => {
-                for t in supertraits.iter() {
-                    if let ast::TraitTyParamBound(ref t, _) = *t {
-                        let id = ty::trait_ref_to_def_id(cx.tcx, &t.trait_ref);
-                        self.lint(cx, id, t.trait_ref.path.span);
-                    }
-                }
-            }
-            ast::ItemImpl(_, _, _, Some(ref t), _, _) => {
-                let id = ty::trait_ref_to_def_id(cx.tcx, t);
-                self.lint(cx, id, t.path.span);
-            }
-            _ => (/* pass */)
-        }
+    fn check_expr(&mut self, cx: &Context, e: &ast::Expr) {
+        stability::check_expr(cx.tcx, e,
+                              &mut |id, sp, stab| self.lint(cx, id, sp, stab));
     }
 }
 

src/librustc/lint/context.rs

@@ -316,15 +316,6 @@ impl LintStore {
             },
             None => unreachable!()
         }
-        match self.by_name.get("unstable") {
-            Some(&Id(lint_id)) => if self.get_level_source(lint_id).0 != Forbid {
-                self.set_level(lint_id, (lvl, ReleaseChannel))
-            },
-            Some(&Renamed(_, lint_id)) => if self.get_level_source(lint_id).0 != Forbid {
-                self.set_level(lint_id, (lvl, ReleaseChannel))
-            },
-            None => unreachable!()
-        }
     }
 }