Support `[__ref]` attribute to make `this` pass by reference. (#4139)

Fixes #4110.

1 files changed, 8 insertions, 1 deletions

diff --git a/source/slang/slang-ast-modifier.h b/source/slang/slang-ast-modifier.h
index 9a27b3c06..03d3e6fcf 100644
--- a/source/slang/slang-ast-modifier.h
+++ b/source/slang/slang-ast-modifier.h
@@ -1004,13 +1004,20 @@ class NonmutatingAttribute : public Attribute
 };
 
 // A `[constref]` attribute, which indicates that the `this` parameter of
-// a member function should be passed by reference.
+// a member function should be passed by const reference.
 //
 class ConstRefAttribute : public Attribute
 {
     SLANG_AST_CLASS(ConstRefAttribute)
 };
 
+// A `[ref]` attribute, which indicates that the `this` parameter of
+// a member function should be passed by reference.
+//
+class RefAttribute : public Attribute
+{
+    SLANG_AST_CLASS(RefAttribute)
+};
 
 // A `[__readNone]` attribute, which indicates that a function
 // computes its results strictly based on argument values, without