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, 18 insertions, 0 deletions

diff --git a/source/slang/slang-language-server-ast-lookup.cpp b/source/slang/slang-language-server-ast-lookup.cpp
index 433047741..e9c5f8fe5 100644
--- a/source/slang/slang-language-server-ast-lookup.cpp
+++ b/source/slang/slang-language-server-ast-lookup.cpp
@@ -411,6 +411,24 @@ public:
         return dispatchIfNotNull(expr->originalExpr);
     }
     bool visitModifiedTypeExpr(ModifiedTypeExpr* expr) { return dispatchIfNotNull(expr->base.exp); }
+    bool visitFuncTypeExpr(FuncTypeExpr* expr)
+    {
+        for(const auto& t : expr->parameters)
+        {
+            if(!dispatchIfNotNull(t.exp))
+                return false;
+        }
+        return dispatchIfNotNull(expr->result.exp);
+    }
+    bool visitTupleTypeExpr(TupleTypeExpr* expr)
+    {
+        for(auto t : expr->members)
+        {
+            if(dispatchIfNotNull(t.exp))
+                return true;
+        }
+        return false;
+    }
     bool visitTryExpr(TryExpr* expr) { return dispatchIfNotNull(expr->base); }
     bool visitHigherOrderInvokeExpr(HigherOrderInvokeExpr* expr)
     {