Initial support for immutable lambda expressions. (#6914)

* Initial support for immutable lambda expressions.

* More diagnostics, and langauge server fix.

* Language server fix.

* Fix bug identified in review.

* Add expected result.

* Update expected result.

1 files changed, 21 insertions, 0 deletions

diff --git a/source/slang/slang-check-shader.cpp b/source/slang/slang-check-shader.cpp
index 4547281e1..6a713f412 100644
--- a/source/slang/slang-check-shader.cpp
+++ b/source/slang/slang-check-shader.cpp
@@ -727,6 +727,27 @@ Type* getParamType(ASTBuilder* astBuilder, DeclRef<VarDeclBase> paramDeclRef)
     return paramType;
 }
 
+Type* getParamTypeWithDirectionWrapper(ASTBuilder* astBuilder, DeclRef<VarDeclBase> paramDeclRef)
+{
+    auto result = getParamType(astBuilder, paramDeclRef);
+    auto direction = getParameterDirection(paramDeclRef.getDecl());
+    switch (direction)
+    {
+    case kParameterDirection_In:
+        return result;
+    case kParameterDirection_ConstRef:
+        return astBuilder->getConstRefType(result);
+    case kParameterDirection_Out:
+        return astBuilder->getOutType(result);
+    case kParameterDirection_InOut:
+        return astBuilder->getInOutType(result);
+    case kParameterDirection_Ref:
+        return astBuilder->getRefType(result, AddressSpace::Generic);
+    default:
+        return result;
+    }
+}
+
 void Module::_collectShaderParams()
 {
     // We are going to walk the global declarations in the body of the