codegen: don't generate extra use statements for non-enums.

There's just no advantage in doing so.

Author: emilio

src/codegen/mod.rs

@@ -543,7 +543,7 @@ impl CodeGenerator for Type {
                 let simple_enum_path = match inner_rust_type.node {
                     ast::TyKind::Path(None, ref p) => {
                         if applicable_template_args.is_empty() &&
-                            !inner_item.expect_type().canonical_type(ctx).is_builtin_or_named() &&
+                            inner_item.expect_type().canonical_type(ctx).is_enum() &&
                             p.segments.iter().all(|p| p.parameters.is_none()) {
                             Some(p.clone())
                         } else {

tests/expectations/tests/bitfield_method_mangling.rs

@@ -46,4 +46,4 @@ impl _bindgen_ty_1 {
             ((val as u32 as u32) << 24u32) & (4278190080usize as u32);
     }
 }
-pub use self::_bindgen_ty_1 as mach_msg_type_descriptor_t;
+pub type mach_msg_type_descriptor_t = _bindgen_ty_1;

tests/expectations/tests/inherit_typedef.rs

@@ -17,7 +17,7 @@ fn bindgen_test_layout_Foo() {
 impl Clone for Foo {
     fn clone(&self) -> Self { *self }
 }
-pub use self::Foo as TypedefedFoo;
+pub type TypedefedFoo = Foo;
 #[repr(C)]
 #[derive(Debug, Copy)]
 pub struct Bar {

tests/expectations/tests/reparented_replacement.rs

@@ -25,5 +25,5 @@ pub mod root {
             fn clone(&self) -> Self { *self }
         }
     }
-    pub use self::super::root::foo::Bar as ReferencesBar;
+    pub type ReferencesBar = root::foo::Bar;
 }

tests/expectations/tests/union_fields.rs

@@ -44,4 +44,4 @@ fn bindgen_test_layout__bindgen_ty_1() {
 impl Clone for _bindgen_ty_1 {
     fn clone(&self) -> Self { *self }
 }
-pub use self::_bindgen_ty_1 as nsStyleUnion;
+pub type nsStyleUnion = _bindgen_ty_1;

tests/expectations/tests/unknown_attr.rs

@@ -13,4 +13,4 @@ pub struct _bindgen_ty_1 {
 impl Clone for _bindgen_ty_1 {
     fn clone(&self) -> Self { *self }
 }
-pub use self::_bindgen_ty_1 as max_align_t;
+pub type max_align_t = _bindgen_ty_1;