auto merge of #13511 : Meyermagic/rust/enum_typeid, r=alexcrichton

Fixes #13507.

I haven't familiarized myself with this part of the rust compiler, so hopefully there are no mistakes (despite the simplicity of the commit). It is also 5am.

Author: bors

src/librustc/middle/ty.rs

@@ -4565,7 +4565,7 @@ pub fn hash_crate_independent(tcx: &ctxt, t: t, svh: &Svh) -> u64 {
             }
             ty_enum(d, _) => {
                 byte!(8);
-                hash!(d)
+                did(&mut state, d);
             }
             ty_box(_) => {
                 byte!(9);

src/test/auxiliary/issue13507.rs

@@ -0,0 +1,100 @@
+// Copyright 2012-2014 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.
+
+pub mod testtypes {
+    use std::intrinsics::TypeId;
+
+    pub fn type_ids() -> Vec<TypeId> {
+        let mut ids = vec!();
+        ids.push(TypeId::of::<FooNil>());
+        ids.push(TypeId::of::<FooBool>());
+        ids.push(TypeId::of::<FooInt>());
+        ids.push(TypeId::of::<FooUint>());
+        ids.push(TypeId::of::<FooFloat>());
+        ids.push(TypeId::of::<FooEnum>());
+        ids.push(TypeId::of::<FooUniq>());
+        ids.push(TypeId::of::<FooPtr>());
+        ids.push(TypeId::of::<FooClosure>());
+        ids.push(TypeId::of::<&'static FooTrait>());
+        ids.push(TypeId::of::<FooStruct>());
+        ids.push(TypeId::of::<FooTuple>());
+        ids
+    }
+
+    // Tests ty_nil
+    pub type FooNil = ();
+
+    // Skipping ty_bot
+
+    // Tests ty_bool
+    pub type FooBool = bool;
+
+    // Tests ty_char
+    pub type FooChar = char;
+
+    // Tests ty_int (does not test all variants of IntTy)
+    pub type FooInt = int;
+
+    // Tests ty_uint (does not test all variants of UintTy)
+    pub type FooUint = uint;
+
+    // Tests ty_float (does not test all variants of FloatTy)
+    pub type FooFloat = f64;
+
+    // For ty_str, what kind of string should I use? &'static str? ~str? Raw str?
+
+    // Tests ty_enum
+    pub enum FooEnum {
+        VarA(uint),
+        VarB(uint, uint)
+    }
+
+    // Skipping ty_box
+
+    // Tests ty_uniq (of u8)
+    pub type FooUniq = ~u8;
+
+    // As with ty_str, what type should be used for ty_vec?
+
+    // Tests ty_ptr
+    pub type FooPtr = *u8;
+
+    // Skipping ty_rptr
+
+    // Skipping ty_bare_fn (how do you get a bare function type, rather than proc or closure?)
+
+    // Tests ty_closure (does not test all types of closures)
+    pub type FooClosure = |arg: u8|: 'static -> u8;
+
+    // Tests ty_trait
+    pub trait FooTrait {
+        fn foo_method(&self) -> uint;
+        fn foo_static_method() -> uint;
+    }
+
+    // Tests ty_struct
+    pub struct FooStruct {
+        pub pub_foo_field: uint,
+        foo_field: uint
+    }
+
+    // Tests ty_tup
+    pub type FooTuple = (u8, i8, bool);
+
+    // Skipping ty_param
+
+    // Skipping ty_self
+
+    // Skipping ty_self
+
+    // Skipping ty_infer
+
+    // Skipping ty_err
+}

src/test/run-pass/issue-13507-2.rs

@@ -0,0 +1,38 @@
+// Copyright 2012-2014 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.
+
+// aux-build:issue13507.rs
+extern crate issue13507;
+use issue13507::testtypes;
+
+use std::intrinsics::TypeId;
+
+pub fn type_ids() -> Vec<TypeId> {
+    let mut ids = vec!();
+    ids.push(TypeId::of::<testtypes::FooNil>());
+    ids.push(TypeId::of::<testtypes::FooBool>());
+    ids.push(TypeId::of::<testtypes::FooInt>());
+    ids.push(TypeId::of::<testtypes::FooUint>());
+    ids.push(TypeId::of::<testtypes::FooFloat>());
+    ids.push(TypeId::of::<testtypes::FooEnum>());
+    ids.push(TypeId::of::<testtypes::FooUniq>());
+    ids.push(TypeId::of::<testtypes::FooPtr>());
+    ids.push(TypeId::of::<testtypes::FooClosure>());
+    ids.push(TypeId::of::<&'static testtypes::FooTrait>());
+    ids.push(TypeId::of::<testtypes::FooStruct>());
+    ids.push(TypeId::of::<testtypes::FooTuple>());
+    ids
+}
+
+pub fn main() {
+    let othercrate = testtypes::type_ids();
+    let thiscrate = type_ids();
+    assert_eq!(thiscrate, othercrate);
+}