rustc: Remove CrateId and all related support

This commit removes all support in the compiler for the #[crate_id] attribute
and all of its derivative infrastructure. A list of the functionality removed is:

* The #[crate_id] attribute no longer exists
* There is no longer the concept of a version of a crate
* Version numbers are no longer appended to symbol names
* The --crate-id command line option has been removed

To migrate forward, rename #[crate_id] to #[crate_name] and only the name of the
crate itself should be mentioned. The version/path of the old crate id should be
removed.

For a transitionary state, the #[crate_id] attribute is still accepted if
the #[crate_name] is not present, but it is warned about if it is the only
identifier present.

RFC: 0035-remove-crate-id
[breaking-change]

1 files changed, 5 insertions, 6 deletions

diff --git a/src/libsyntax/ext/expand.rs b/src/libsyntax/ext/expand.rs
index b30b62c8901..752b3a09e65 100644
--- a/src/libsyntax/ext/expand.rs
+++ b/src/libsyntax/ext/expand.rs
@@ -19,7 +19,6 @@ use attr;
 use attr::AttrMetaMethods;
 use codemap;
 use codemap::{Span, Spanned, ExpnInfo, NameAndSpan, MacroBang, MacroAttribute};
-use crateid::CrateId;
 use ext::base::*;
 use fold;
 use fold::*;
@@ -985,7 +984,7 @@ fn new_span(cx: &ExtCtxt, sp: Span) -> Span {
 
 pub struct ExpansionConfig {
     pub deriving_hash_type_parameter: bool,
-    pub crate_id: CrateId,
+    pub crate_name: String,
 }
 
 pub struct ExportedMacros {
@@ -1184,7 +1183,7 @@ mod test {
         // should fail:
         let cfg = ::syntax::ext::expand::ExpansionConfig {
             deriving_hash_type_parameter: false,
-            crate_id: from_str("test").unwrap(),
+            crate_name: "test".to_str(),
         };
         expand_crate(&sess,cfg,vec!(),vec!(),crate_ast);
     }
@@ -1201,7 +1200,7 @@ mod test {
             Vec::new(), &sess);
         let cfg = ::syntax::ext::expand::ExpansionConfig {
             deriving_hash_type_parameter: false,
-            crate_id: from_str("test").unwrap(),
+            crate_name: "test".to_str(),
         };
         expand_crate(&sess,cfg,vec!(),vec!(),crate_ast);
     }
@@ -1217,7 +1216,7 @@ mod test {
             Vec::new(), &sess);
         let cfg = ::syntax::ext::expand::ExpansionConfig {
             deriving_hash_type_parameter: false,
-            crate_id: from_str("test").unwrap(),
+            crate_name: "test".to_str(),
         };
         expand_crate(&sess, cfg, vec!(), vec!(), crate_ast);
     }
@@ -1254,7 +1253,7 @@ mod test {
         // the cfg argument actually does matter, here...
         let cfg = ::syntax::ext::expand::ExpansionConfig {
             deriving_hash_type_parameter: false,
-            crate_id: from_str("test").unwrap(),
+            crate_name: "test".to_str(),
         };
         expand_crate(&ps,cfg,vec!(),vec!(),crate_ast)
     }