Fix: expand with actual expansion name instead of package name

commit-id:2136619c

plugins/cairo-lang-macro/src/lib.rs

@@ -101,7 +101,7 @@ pub unsafe extern "C" fn expand(
                 None
             }
         })
-        .expect("proc macro not found");
+        .expect("procedural macro not found");
     let result = fun(token_stream);
     let result: StableProcMacroResult = result.into_stable();
     cairo_lang_macro_stable::StableResultWrapper {

scarb/src/compiler/plugin/proc_macro/ffi.rs

@@ -116,13 +116,15 @@ impl ProcMacroInstance {
     ///
     /// Please be aware that the memory management of values passing the FFI-barrier is tricky.
     /// The memory must be freed on the same side of the barrier, where the allocation was made.
-    pub(crate) fn generate_code(&self, token_stream: TokenStream) -> ProcMacroResult {
+    pub(crate) fn generate_code(
+        &self,
+        item_name: SmolStr,
+        token_stream: TokenStream,
+    ) -> ProcMacroResult {
         // This must be manually freed with call to from_owned_stable.
         let stable_token_stream = token_stream.into_stable();
         // Allocate proc macro name.
-        let item_name = CString::new(self.package_id.name.to_string())
-            .unwrap()
-            .into_raw();
+        let item_name = CString::new(item_name.to_string()).unwrap().into_raw();
         // Call FFI interface for code expansion.
         // Note that `stable_result` has been allocated by the dynamic library.
         let stable_result = (self.plugin.vtable.expand)(item_name, stable_token_stream);

scarb/src/compiler/plugin/proc_macro/host.rs

@@ -227,7 +227,7 @@ impl MacroPlugin for ProcMacroHostPlugin {
                 .iter()
                 .find(|m| m.package_id() == input.package_id)
                 .expect("procedural macro must be registered in proc macro host");
-            match instance.generate_code(token_stream.clone()) {
+            match instance.generate_code(input.expansion.name.clone(), token_stream.clone()) {
                 ProcMacroResult::Replace {
                     token_stream: new_token_stream,
                     aux_data: new_aux_data,