Add wrapper type for tokenizing passthrough attrs
diff --git a/syntax/mod.rs b/syntax/mod.rs
index c478d3c..da21204 100644
--- a/syntax/mod.rs
+++ b/syntax/mod.rs
@@ -25,6 +25,7 @@
 pub mod trivial;
 pub mod types;
 
+use self::attrs::OtherAttrs;
 use self::discriminant::Discriminant;
 use self::namespace::Namespace;
 use self::parse::kw;
@@ -32,7 +33,7 @@
 use proc_macro2::{Ident, Span};
 use syn::punctuated::Punctuated;
 use syn::token::{Brace, Bracket, Paren};
-use syn::{Attribute, Expr, Generics, Lifetime, LitInt, Token, Type as RustType};
+use syn::{Expr, Generics, Lifetime, LitInt, Token, Type as RustType};
 
 pub use self::atom::Atom;
 pub use self::derive::{Derive, Trait};
@@ -72,7 +73,7 @@
     pub lang: Lang,
     pub doc: Doc,
     pub derives: Vec<Derive>,
-    pub attrs: Vec<Attribute>,
+    pub attrs: OtherAttrs,
     pub type_token: Token![type],
     pub name: Pair,
     pub generics: Lifetimes,
@@ -85,7 +86,7 @@
 pub struct Struct {
     pub doc: Doc,
     pub derives: Vec<Derive>,
-    pub attrs: Vec<Attribute>,
+    pub attrs: OtherAttrs,
     pub visibility: Token![pub],
     pub struct_token: Token![struct],
     pub name: Pair,
@@ -96,7 +97,7 @@
 pub struct Enum {
     pub doc: Doc,
     pub derives: Vec<Derive>,
-    pub attrs: Vec<Attribute>,
+    pub attrs: OtherAttrs,
     pub enum_token: Token![enum],
     pub name: Pair,
     pub brace_token: Brace,
@@ -109,7 +110,7 @@
 pub struct ExternFn {
     pub lang: Lang,
     pub doc: Doc,
-    pub attrs: Vec<Attribute>,
+    pub attrs: OtherAttrs,
     pub name: Pair,
     pub sig: Signature,
     pub semi_token: Token![;],
@@ -119,7 +120,7 @@
 pub struct TypeAlias {
     pub doc: Doc,
     pub derives: Vec<Derive>,
-    pub attrs: Vec<Attribute>,
+    pub attrs: OtherAttrs,
     pub type_token: Token![type],
     pub name: Pair,
     pub generics: Lifetimes,
@@ -156,7 +157,7 @@
 
 pub struct Var {
     pub doc: Doc,
-    pub attrs: Vec<Attribute>,
+    pub attrs: OtherAttrs,
     pub visibility: Token![pub],
     pub ident: Ident,
     pub ty: Type,
@@ -176,7 +177,7 @@
 
 pub struct Variant {
     pub doc: Doc,
-    pub attrs: Vec<Attribute>,
+    pub attrs: OtherAttrs,
     pub name: Pair,
     pub discriminant: Discriminant,
     pub expr: Option<Expr>,