Refactor requires_explicit_align

Author: pepyakin

src/codegen/mod.rs

@@ -1612,10 +1612,13 @@ impl CodeGenerator for CompInfo {
                 fields.push(padding_field);
             }
 
-            if let Some(align_field) =
-                layout.and_then(|layout| struct_layout.align_struct(layout))
-            {
-                fields.push(align_field);
+            if let Some(layout) = layout {
+                if struct_layout.requires_explicit_align(layout) {
+                    let ty = helpers::blob(Layout::new(0, layout.align));
+                    fields.push(quote! {
+                        pub __bindgen_align: #ty ,
+                    });
+                }
             }
         }
 

src/codegen/struct_layout.rs

@@ -288,18 +288,9 @@ impl<'a> StructLayoutTracker<'a> {
         }
     }
 
-    pub fn align_struct(&self, layout: Layout) -> Option<quote::Tokens> {
-        if self.max_field_align < layout.align &&
+    pub fn requires_explicit_align(&self, layout: Layout) -> bool {
+        self.max_field_align < layout.align &&
             layout.align <= mem::size_of::<*mut ()>()
-        {
-            let ty = helpers::blob(Layout::new(0, layout.align));
-
-            Some(quote! {
-                pub __bindgen_align: #ty ,
-            })
-        } else {
-            None
-        }
     }
 
     fn padding_bytes(&self, layout: Layout) -> usize {