Rename host_binding to final

crates/macro-support/src/parser.rs

@@ -149,10 +149,10 @@ impl BindgenAttrs {
         })
     }
 
-    /// Whether the `host_binding` attribute is present
+    /// Whether the `final` attribute is present
-    fn host_binding(&self) -> Option<&Ident> {
+    fn final_(&self) -> Option<&Ident> {
         self.attrs.iter().filter_map(|a| match a {
-            BindgenAttr::HostBinding(i) => Some(i),
+            BindgenAttr::Final(i) => Some(i),
             _ => None,
         }).next()
     }
@@ -237,7 +237,7 @@ pub enum BindgenAttr {
     IndexingSetter,
     IndexingDeleter,
     Structural,
-    HostBinding(Ident),
+    Final(Ident),
     Readonly,
     JsName(String, Span),
     JsClass(String),
@@ -249,7 +249,8 @@ pub enum BindgenAttr {
 impl Parse for BindgenAttr {
     fn parse(input: ParseStream) -> SynResult<Self> {
         let original = input.fork();
-        let attr: Ident = input.parse()?;
+        let attr: AnyIdent = input.parse()?;
+        let attr = attr.0;
         if attr == "catch" {
             return Ok(BindgenAttr::Catch);
         }
@@ -271,8 +272,8 @@ impl Parse for BindgenAttr {
         if attr == "structural" {
             return Ok(BindgenAttr::Structural);
         }
-        if attr == "host_binding" {
+        if attr == "final" {
-            return Ok(BindgenAttr::HostBinding(attr))
+            return Ok(BindgenAttr::Final(attr))
         }
         if attr == "readonly" {
             return Ok(BindgenAttr::Readonly);
@@ -555,9 +556,9 @@ impl<'a> ConvertToAst<(BindgenAttrs, &'a Option<String>)> for syn::ForeignItemFn
                 ShortHash(data)
             )
         };
-        if let Some(ident) = opts.host_binding() {
+        if let Some(ident) = opts.final_() {
             if opts.structural() {
-                bail_span!(ident, "cannot specify both `structural` and `host_binding`");
+                bail_span!(ident, "cannot specify both `structural` and `final`");
             }
         }
         Ok(ast::ImportKind::Function(ast::ImportFunction {
@@ -566,7 +567,7 @@ impl<'a> ConvertToAst<(BindgenAttrs, &'a Option<String>)> for syn::ForeignItemFn
             js_ret,
             catch,
             variadic,
-            structural: opts.structural() || opts.host_binding().is_none(),
+            structural: opts.structural() || opts.final_().is_none(),
             rust_name: self.ident.clone(),
             shim: Ident::new(&shim, Span::call_site()),
             doc_comment: None,

crates/macro/ui-tests/structural-and-final.rs

@@ -6,6 +6,6 @@ use wasm_bindgen::prelude::*;
 extern "C" {
     type Foo;
 
-    #[wasm_bindgen(method, structural, host_binding)]
+    #[wasm_bindgen(method, structural, final)]
     fn bar(this: &Foo);
 }

crates/macro/ui-tests/structural-and-final.stderr

@@ -0,0 +1,8 @@
+error: cannot specify both `structural` and `final`
+ --> $DIR/structural-and-final.rs:9:40
+  |
+9 |     #[wasm_bindgen(method, structural, final)]
+  |                                        ^^^^^
+
+error: aborting due to previous error
+

crates/macro/ui-tests/structural-and-host-binding.stderr

@@ -1,8 +0,0 @@
-error: cannot specify both `structural` and `host_binding`
- --> $DIR/structural-and-host-binding.rs:9:40
-  |
-9 |     #[wasm_bindgen(method, structural, host_binding)]
-  |                                        ^^^^^^^^^^^^
-
-error: aborting due to previous error
-

guide/src/SUMMARY.md

@@ -61,7 +61,7 @@
       - [`constructor`](./reference/attributes/on-js-imports/constructor.md)
       - [`extends`](./reference/attributes/on-js-imports/extends.md)
       - [`getter` and `setter`](./reference/attributes/on-js-imports/getter-and-setter.md)
-      - [`host_binding`](./reference/attributes/on-js-imports/host_binding.md)
+      - [`final`](./reference/attributes/on-js-imports/final.md)
       - [`indexing_getter`, `indexing_setter`, and `indexing_deleter`](./reference/attributes/on-js-imports/indexing-getter-setter-deleter.md)
       - [`js_class = "Blah"`](./reference/attributes/on-js-imports/js_class.md)
       - [`js_name`](./reference/attributes/on-js-imports/js_name.md)

guide/src/reference/attributes/on-js-imports/final.md

@@ -12,7 +12,7 @@ prototype chain of an object.
 
 The `final` attribute is intended to be purely related to performance. It
 ideally has no user-visible effect, and `structural` imports (the default)
-should be able to transparently switch to `host_binding` eventually.
+should be able to transparently switch to `final` eventually.
 
 The eventual performance aspect is that with the [host bindings
 proposal][host-bindings] then `wasm-bindgen` will need to generate far fewer JS

tests/wasm/final.rs

@@ -4,23 +4,23 @@ use wasm_bindgen_test::*;
 #[wasm_bindgen]
 extern "C" {
     type Math;
-    #[wasm_bindgen(static_method_of = Math, host_binding)]
+    #[wasm_bindgen(static_method_of = Math, final)]
     fn log(f: f32) -> f32;
 }
 
-#[wasm_bindgen(module = "tests/wasm/host_binding.js")]
+#[wasm_bindgen(module = "tests/wasm/final.js")]
 extern "C" {
     type MyType;
-    #[wasm_bindgen(constructor, host_binding)]
+    #[wasm_bindgen(constructor, final)]
     fn new(x: u32) -> MyType;
-    #[wasm_bindgen(static_method_of = MyType, host_binding)]
+    #[wasm_bindgen(static_method_of = MyType, final)]
     fn foo(a: &str) -> String;
-    #[wasm_bindgen(method, host_binding)]
+    #[wasm_bindgen(method, final)]
     fn bar(this: &MyType, arg: bool) -> f32;
 
-    #[wasm_bindgen(method, getter, host_binding)]
+    #[wasm_bindgen(method, getter, final)]
     fn a(this: &MyType) -> u32;
-    #[wasm_bindgen(method, setter, host_binding)]
+    #[wasm_bindgen(method, setter, final)]
     fn set_a(this: &MyType, a: u32);
 }
 

tests/wasm/import_class.rs

@@ -32,12 +32,12 @@ extern "C" {
     fn switch_methods_a();
     fn switch_methods_b();
     type SwitchMethods;
-    #[wasm_bindgen(constructor, host_binding)]
+    #[wasm_bindgen(constructor, final)]
     fn new() -> SwitchMethods;
-    #[wasm_bindgen(js_namespace = SwitchMethods, host_binding)]
+    #[wasm_bindgen(js_namespace = SwitchMethods, final)]
     fn a();
     fn switch_methods_called() -> bool;
-    #[wasm_bindgen(method, host_binding)]
+    #[wasm_bindgen(method, final)]
     fn b(this: &SwitchMethods);
 
     type Properties;

tests/wasm/main.rs

@@ -18,7 +18,8 @@ pub mod comments;
 pub mod duplicate_deps;
 pub mod duplicates;
 pub mod enums;
-pub mod host_binding;
+#[path = "final.rs"]
+pub mod final_;
 pub mod import_class;
 pub mod imports;
 pub mod js_objects;