Remove "implement" feature (#3333)

crates/libs/bindgen/src/rust/extensions/mod.rs

@@ -24,8 +24,3 @@ pub fn gen_mod(_writer: &Writer, namespace: &str) -> TokenStream {
         _ => quote!(),
     }
 }
-
-/// Generates extension code that is subject to the `implement` feature for a specific namespace
-pub fn gen_impl(_namespace: &str) -> TokenStream {
-    TokenStream::new()
-}

crates/libs/bindgen/src/rust/implements.rs

@@ -2,8 +2,8 @@ use super::*;
 use metadata::HasAttributes;
 
 pub fn writer(writer: &Writer, def: metadata::TypeDef) -> TokenStream {
-    if def.kind() != metadata::TypeKind::Interface
-        || (!writer.implement && def.has_attribute("ExclusiveToAttribute"))
+    if !(def.kind() == metadata::TypeKind::Interface
+        && (writer.implement || (writer.package && !def.has_attribute("ExclusiveToAttribute"))))
     {
         return quote! {};
     }
@@ -190,12 +190,15 @@ pub fn writer(writer: &Writer, def: metadata::TypeDef) -> TokenStream {
                 }
             }
             #[doc(hidden)]
+            #[cfg(feature = "std")]
             #features
             struct #implvtbl_ident<T: #impl_ident> (core::marker::PhantomData<T>);
+            #[cfg(feature = "std")]
             #features
             impl<T: #impl_ident> #implvtbl_ident<T> {
                 const VTABLE: #vtbl_ident = #vtbl_ident::new::<T>();
             }
+            #[cfg(feature = "std")]
             #features
             impl #type_ident {
                 pub fn new<'a, T: #impl_ident>(this: &'a T) -> windows_core::ScopedInterface<'a, Self> {

crates/libs/bindgen/src/rust/interfaces.rs

@@ -230,5 +230,6 @@ fn gen_win_interface(writer: &Writer, def: metadata::TypeDef) -> TokenStream {
         has_unknown_base,
     ));
     tokens.combine(&writer.interface_vtbl(def, generics, &constraints, &features));
+    tokens.combine(&implements::writer(writer, def));
     tokens
 }

crates/libs/bindgen/src/rust/mod.rs

@@ -113,26 +113,11 @@ fn gen_package(writer: &Writer) -> Result<()> {
 
     trees.par_iter().try_for_each(|tree| {
         let directory = format!("{directory}/{}", tree.namespace.replace('.', "/"));
-        let mut tokens = namespace(writer, tree);
-
-        let tokens_impl = if !writer.sys {
-            namespace_impl(writer, tree)
-        } else {
-            String::new()
-        };
-
-        if !writer.sys && !tokens_impl.is_empty() {
-            tokens.push_str("#[cfg(feature = \"implement\")]\ncore::include!(\"impl.rs\");\n");
-        }
+        let tokens = namespace(writer, tree);
 
         let output = format!("{directory}/mod.rs");
         write_to_file(&output, try_format(writer, &tokens))?;
 
-        if !writer.sys && !tokens_impl.is_empty() {
-            let output = format!("{directory}/impl.rs");
-            write_to_file(&output, try_format(writer, &tokens_impl))?;
-        }
-
         Ok::<(), Error>(())
     })?;
 
@@ -248,43 +233,6 @@ fn namespace(writer: &Writer, tree: &Tree) -> String {
     }
 
     tokens.combine(&extensions::gen_mod(writer, tree.namespace));
-
-    if writer.implement {
-        tokens.push_str(&namespace_impl(writer, tree));
-    }
-
-    tokens.into_string()
-}
-
-fn namespace_impl(writer: &Writer, tree: &Tree) -> String {
-    let writer = &mut writer.clone();
-    writer.namespace = tree.namespace;
-    let mut types = std::collections::BTreeMap::new();
-
-    for item in writer.reader.namespace_items(tree.namespace) {
-        if let metadata::Item::Type(def) = item {
-            let type_name = def.type_name();
-            if writer.reader.core_type(type_name).is_some() {
-                continue;
-            }
-            if def.kind() != metadata::TypeKind::Interface {
-                continue;
-            }
-            let tokens = implements::writer(writer, def);
-
-            if !tokens.is_empty() {
-                types.insert(type_name.name(), tokens);
-            }
-        }
-    }
-
-    let types = types.values();
-
-    let mut tokens = quote! {
-        #(#types)*
-    };
-
-    tokens.combine(&extensions::gen_impl(tree.namespace));
     tokens.into_string()
 }
 

crates/libs/windows/Cargo.toml

@@ -39,7 +39,6 @@ path = "../targets"
 default = ["std"]
 docs = []
 deprecated = []
-implement = []
 std = ["windows-core/std"]
 # generated features
 AI = ["Foundation"]