Get rid of terrible way for iterating over provided methods.

src/librustc/metadata/csearch.rs

@@ -24,11 +24,6 @@ use syntax::ast;
 use syntax::ast_map;
 use syntax::diagnostic::expect;
 
-pub struct ProvidedTraitMethodInfo {
-    ty: ty::Method,
-    def_id: ast::def_id
-}
-
 pub struct StaticMethodInfo {
     ident: ast::ident,
     def_id: ast::def_id,
@@ -134,7 +129,7 @@ pub fn get_trait_method_def_ids(cstore: @mut cstore::CStore,
 
 pub fn get_provided_trait_methods(tcx: ty::ctxt,
                                   def: ast::def_id)
-                               -> ~[ProvidedTraitMethodInfo] {
+                               -> ~[@ty::Method] {
     let cstore = tcx.cstore;
     let cdata = cstore::get_crate_data(cstore, def.crate);
     decoder::get_provided_trait_methods(cstore.intr, cdata, def.node, tcx)

src/librustc/metadata/decoder.rs

@@ -14,7 +14,7 @@ use core::prelude::*;
 
 use metadata::cstore::crate_metadata;
 use metadata::common::*;
-use metadata::csearch::{ProvidedTraitMethodInfo, StaticMethodInfo};
+use metadata::csearch::StaticMethodInfo;
 use metadata::csearch;
 use metadata::cstore;
 use metadata::decoder;
@@ -752,7 +752,7 @@ pub fn get_trait_method_def_ids(cdata: cmd,
 
 pub fn get_provided_trait_methods(intr: @ident_interner, cdata: cmd,
                                   id: ast::node_id, tcx: ty::ctxt) ->
-        ~[ProvidedTraitMethodInfo] {
+        ~[@ty::Method] {
     let data = cdata.data;
     let item = lookup_item(id, data);
     let mut result = ~[];
@@ -763,13 +763,8 @@ pub fn get_provided_trait_methods(intr: @ident_interner, cdata: cmd,
 
         if item_method_sort(mth) != 'p' { loop; }
 
-        let ty_method = get_method(intr, cdata, did.node, tcx);
-        let provided_trait_method_info = ProvidedTraitMethodInfo {
-            ty: ty_method,
-            def_id: did
-        };
-
-        vec::push(&mut result, provided_trait_method_info);
+        vec::push(&mut result,
+                  @get_method(intr, cdata, did.node, tcx));
     }
 
     return result;

src/librustc/middle/ty.rs

@@ -3649,7 +3649,7 @@ pub fn def_has_ty_params(def: ast::def) -> bool {
     }
 }
 
-pub fn provided_trait_methods(cx: ctxt, id: ast::def_id) -> ~[ast::ident] {
+pub fn provided_trait_methods(cx: ctxt, id: ast::def_id) -> ~[@Method] {
     if is_local(id) {
         match cx.items.find(&id.node) {
             Some(&ast_map::node_item(@ast::item {
@@ -3657,13 +3657,13 @@ pub fn provided_trait_methods(cx: ctxt, id: ast::def_id) -> ~[ast::ident] {
                         _
                     }, _)) =>
                 match ast_util::split_trait_methods(*ms) {
-                   (_, p) => p.map(|method| method.ident)
+                   (_, p) => p.map(|m| method(cx, ast_util::local_def(m.id)))
                 },
             _ => cx.sess.bug(fmt!("provided_trait_methods: %? is not a trait",
                                   id))
         }
     } else {
-        csearch::get_provided_trait_methods(cx, id).map(|ifo| ifo.ty.ident)
+        csearch::get_provided_trait_methods(cx, id)
     }
 }
 

src/librustc/middle/typeck/coherence.rs

@@ -333,7 +333,8 @@ impl CoherenceChecker {
 
         let impl_poly_type = ty::lookup_item_type(tcx, impl_id);
 
-        for self.each_provided_trait_method(trait_ref.def_id) |trait_method| {
+        let provided = ty::provided_trait_methods(tcx, trait_ref.def_id);
+        for provided.iter().advance |trait_method| {
             // Synthesize an ID.
             let new_id = parse::next_node_id(tcx.sess.parse_sess);
             let new_did = local_def(new_id);
@@ -347,7 +348,7 @@ impl CoherenceChecker {
                     impl_id,
                     trait_ref,
                     new_did,
-                    trait_method);
+                    *trait_method);
 
             debug!("new_method_ty=%s", new_method_ty.repr(tcx));
 
@@ -526,29 +527,6 @@ impl CoherenceChecker {
         }
     }
 
-    pub fn each_provided_trait_method(&self,
-                                      trait_did: ast::def_id,
-                                      f: &fn(x: @ty::Method) -> bool)
-                                      -> bool {
-        // Make a list of all the names of the provided methods.
-        // XXX: This is horrible.
-        let mut provided_method_idents = HashSet::new();
-        let tcx = self.crate_context.tcx;
-        let r = ty::provided_trait_methods(tcx, trait_did);
-        for r.iter().advance |ident| {
-            provided_method_idents.insert(*ident);
-        }
-
-        for ty::trait_methods(tcx, trait_did).iter().advance |&method| {
-            if provided_method_idents.contains(&method.ident) {
-                if !f(method) {
-                    return false;
-                }
-            }
-        }
-        return true;
-    }
-
     pub fn polytypes_unify(&self,
                            polytype_a: ty_param_bounds_and_ty,
                            polytype_b: ty_param_bounds_and_ty)
@@ -729,9 +707,9 @@ impl CoherenceChecker {
         }
         // Default methods
         let r = ty::provided_trait_methods(tcx, trait_did);
-        for r.iter().advance |ident| {
-            debug!("inserting provided method %s", ident.repr(tcx));
-            provided_names.insert(*ident);
+        for r.iter().advance |method| {
+            debug!("inserting provided method %s", method.ident.repr(tcx));
+            provided_names.insert(method.ident);
         }
 
         let r = ty::trait_methods(tcx, trait_did);