Add a few more derivings to AST types

diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index 34de81008711e40ca0c351bd282336159436b4e0..8159aee99d12c5bee1008f62b6aeefb67f6ddcea 100644 (file)
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -261,7 +261,7 @@ pub struct Crate {
 
 pub type MetaItem = Spanned<MetaItem_>;
 
-#[deriving(Clone, Encodable, Decodable, Eq, Hash, Show)]
+#[deriving(Clone, Eq, Encodable, Decodable, Hash, Show)]
 pub enum MetaItem_ {
     MetaWord(InternedString),
     MetaList(InternedString, Vec<Gc<MetaItem>>),
@@ -423,7 +423,7 @@ pub enum LocalSource {
 // FIXME (pending discussion of #1697, #2178...): local should really be
 // a refinement on pat.
 /// Local represents a `let` statement, e.g., `let <pat>:<ty> = <expr>;`
-#[deriving(PartialEq, Eq, Encodable, Decodable, Hash, Show)]
+#[deriving(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Show)]
 pub struct Local {
     pub ty: P<Ty>,
     pub pat: Gc<Pat>,
@@ -435,7 +435,7 @@ pub struct Local {
 
 pub type Decl = Spanned<Decl_>;
 
-#[deriving(PartialEq, Eq, Encodable, Decodable, Hash, Show)]
+#[deriving(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Show)]
 pub enum Decl_ {
     /// A local (let) binding:
     DeclLocal(Gc<Local>),
@@ -677,7 +677,7 @@ pub struct MutTy {
     pub mutbl: Mutability,
 }
 
-#[deriving(PartialEq, Eq, Encodable, Decodable, Hash, Show)]
+#[deriving(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Show)]
 pub struct TypeField {
     pub ident: Ident,
     pub mt: MutTy,
@@ -1048,7 +1048,7 @@ pub fn id(&self) -> NodeId {
 
 pub type ViewPath = Spanned<ViewPath_>;
 
-#[deriving(PartialEq, Eq, Encodable, Decodable, Hash, Show)]
+#[deriving(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Show)]
 pub enum ViewPath_ {
 
     /// `quux = foo::bar::baz`
@@ -1113,7 +1113,7 @@ pub struct Attribute_ {
 /// that the ref_id is for. The impl_id maps to the "self type" of this impl.
 /// If this impl is an ItemImpl, the impl_id is redundant (it could be the
 /// same as the impl's node id).
-#[deriving(Clone, PartialEq, Eq, Encodable, Decodable, Hash,   Show)]
+#[deriving(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Show)]
 pub struct TraitRef {
     pub path: Path,
     pub ref_id: NodeId,
@@ -1169,7 +1169,7 @@ pub fn is_unnamed(&self) -> bool {
     }
 }
 
-#[deriving(PartialEq, Eq, Encodable, Decodable, Hash, Show)]
+#[deriving(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Show)]
 pub struct StructDef {
     /// Fields, not including ctor
     pub fields: Vec<StructField>,
@@ -1219,7 +1219,7 @@ pub enum Item_ {
     ItemMac(Mac),
 }
 
-#[deriving(PartialEq, Eq, Encodable, Decodable, Hash, Show)]
+#[deriving(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Show)]
 pub struct ForeignItem {
     pub ident: Ident,
     pub attrs: Vec<Attribute>,
@@ -1229,7 +1229,7 @@ pub struct ForeignItem {
     pub vis: Visibility,
 }
 
-#[deriving(PartialEq, Eq, Encodable, Decodable, Hash, Show)]
+#[deriving(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Show)]
 pub enum ForeignItem_ {
     ForeignItemFn(P<FnDecl>, Generics),
     ForeignItemStatic(P<Ty>, /* is_mutbl */ bool),
@@ -1238,7 +1238,7 @@ pub enum ForeignItem_ {
 /// The data we save and restore about an inlined item or method.  This is not
 /// part of the AST that we parse from a file, but it becomes part of the tree
 /// that we trans.
-#[deriving(PartialEq, Eq, Encodable, Decodable, Hash, Show)]
+#[deriving(Clone, PartialEq, Eq, Encodable, Decodable, Hash, Show)]
 pub enum InlinedItem {
     IIItem(Gc<Item>),
     IIMethod(DefId /* impl id */, bool /* is provided */, Gc<Method>),