[Parser] Parse RefAs expressions (#6101)

2 files changed, 6 insertions, 1 deletions

diff --git a/src/parser/contexts.h b/src/parser/contexts.h
index 4147f7bda..aa207fcd5 100644
--- a/src/parser/contexts.h
+++ b/src/parser/contexts.h
@@ -446,6 +446,7 @@ struct NullInstrParserCtx {
   template<typename HeapTypeT> Result<> makeArrayFill(Index, HeapTypeT) {
     return Ok{};
   }
+  Result<> makeRefAs(Index, RefAsOp) { return Ok{}; }
 };
 
 // Phase 1: Parse definition spans for top-level module elements and determine
@@ -1352,6 +1353,10 @@ struct ParseDefsCtx : TypeParserCtx<ParseDefsCtx> {
   Result<> makeArrayFill(Index pos, HeapType type) {
     return withLoc(pos, irBuilder.makeArrayFill(type));
   }
+
+  Result<> makeRefAs(Index pos, RefAsOp op) {
+    return withLoc(pos, irBuilder.makeRefAs(op));
+  }
 };
 
 } // namespace wasm::WATParser
diff --git a/src/parser/parsers.h b/src/parser/parsers.h
index e2fb3732a..610e2953a 100644
--- a/src/parser/parsers.h
+++ b/src/parser/parsers.h
@@ -1425,7 +1425,7 @@ template<typename Ctx> Result<> makeArrayInitElem(Ctx& ctx, Index pos) {
 }
 
 template<typename Ctx> Result<> makeRefAs(Ctx& ctx, Index pos, RefAsOp op) {
-  return ctx.in.err("unimplemented instruction");
+  return ctx.makeRefAs(pos, op);
 }
 
 template<typename Ctx>