fix: handle raw identifier in field (#3621)

Author: Solo-steven

CHANGELOG.md

@@ -103,6 +103,9 @@
 
 ### Fixed
 
+* Fixed `wasm_bindgen` macro to handle raw identifiers in field names.
+  [#3621](https://github.com/rustwasm/wasm-bindgen/pull/3621)
+
 * Fixed bindings and comments for `Atomics.wait`.
   [#3509](https://github.com/rustwasm/wasm-bindgen/pull/3509)
 

crates/macro-support/src/parser.rs

@@ -8,6 +8,7 @@ use backend::util::{ident_ty, ShortHash};
 use backend::Diagnostic;
 use proc_macro2::{Ident, Span, TokenStream, TokenTree};
 use quote::ToTokens;
+use syn::ext::IdentExt;
 use syn::parse::{Parse, ParseStream, Result as SynResult};
 use syn::spanned::Spanned;
 use syn::{ItemFn, Lit, MacroDelimiter, ReturnType};
@@ -420,7 +421,7 @@ impl<'a> ConvertToAst<(&ast::Program, BindgenAttrs)> for &'a mut syn::ItemStruct
                 _ => continue,
             }
             let (js_field_name, member) = match &field.ident {
-                Some(ident) => (ident.to_string(), syn::Member::Named(ident.clone())),
+                Some(ident) => (ident.unraw().to_string(), syn::Member::Named(ident.clone())),
                 None => (i.to_string(), syn::Member::Unnamed(i.into())),
             };
 

tests/wasm/getters_and_setters.rs

@@ -20,6 +20,8 @@ extern "C" {
     fn _12_js(rules: Rules) -> Rules;
     fn _13_js(rules: Rules) -> Rules;
 
+    fn raw_identifer(rules: RulesWithRawField) -> RulesWithRawField;
+
     fn test_getter_compute(x: GetterCompute);
     fn test_setter_compute(x: SetterCompute);
     fn test_statics(x: Statics);
@@ -32,6 +34,23 @@ pub struct Rules {
     pub field: i32,
 }
 
+#[wasm_bindgen]
+pub struct RulesWithRawField {
+    pub r#mod: i32,
+}
+
+#[wasm_bindgen]
+impl RulesWithRawField {
+    #[wasm_bindgen]
+    pub fn get_field_value(&self) -> i32 {
+        self.r#mod
+    }
+    #[wasm_bindgen]
+    pub fn set_field_value(&mut self, value: i32) {
+        self.r#mod = value;
+    }
+}
+
 #[wasm_bindgen]
 #[allow(non_snake_case)]
 impl Rules {