MVP for higher order functions (#2849)

* MVP for higher order functions

* Add shader subgroup partitioned glsl intrinsics

* Implement parsing and checking for tuple types

Currently there is no way to do anything useful with them from the source language however

* neaten

* Correct precedence of function type parsing

* neaten

* higher order function tests

* function types of any arity

* Inference for higher order functions

* Add second test for unsynchronized params

* regenerate vs projects

* dx11 -> dx12 for saturated cooperations tests

* Disable saturated cooperation tests on vulkan

They fail on release builds in CI, not essential for the higher order function work however

* remove saturated-cooperation tests

* Remove unnecessary assert and clarify control flow in AddDeclRefOverloadCandidates

* Add Tuple type name mangling

* Use functype keyword to introduce function types

* Add more inference tests for hof

---------

Co-authored-by: Yong He <yonghe@outlook.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/source/slang/slang-ast-iterator.h b/source/slang/slang-ast-iterator.h
index b23f7c6ca..ea3db6937 100644
--- a/source/slang/slang-ast-iterator.h
+++ b/source/slang/slang-ast-iterator.h
@@ -236,6 +236,19 @@ struct ASTIterator
             iterator->maybeDispatchCallback(expr);
             dispatchIfNotNull(expr->base.exp);
         }
+        void visitFuncTypeExpr(FuncTypeExpr* expr)
+        {
+            iterator->maybeDispatchCallback(expr);
+            for(const auto& t : expr->parameters)
+                dispatchIfNotNull(t.exp);
+            dispatchIfNotNull(expr->result.exp);
+        }
+        void visitTupleTypeExpr(TupleTypeExpr* expr)
+        {
+            iterator->maybeDispatchCallback(expr);
+            for(auto t : expr->members)
+                dispatchIfNotNull(t.exp);
+        }
         void visitPointerTypeExpr(PointerTypeExpr* expr)
         {
             iterator->maybeDispatchCallback(expr);