From 110d15b61ac5d76da001d412eaa4be07f3cd8f4d Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Fri, 19 Jun 2020 11:19:51 -0700
Subject: Dynamic dispatch for static member functions of associatedtypes.
 (#1404)

---
 source/slang/slang-emit-cpp.cpp | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

(limited to 'source/slang/slang-emit-cpp.cpp')

diff --git a/source/slang/slang-emit-cpp.cpp b/source/slang/slang-emit-cpp.cpp
index accb290fa..4a59f4cf9 100644
--- a/source/slang/slang-emit-cpp.cpp
+++ b/source/slang/slang-emit-cpp.cpp
@@ -1711,6 +1711,15 @@ void CPPSourceEmitter::_emitWitnessTableDefinitions()
                 m_writer->emit("&KernelContext::");
                 m_writer->emit(_getWitnessTableWrapperFuncName(funcVal));
             }
+            else if (auto witnessTableVal = as<IRWitnessTable>(entry->getSatisfyingVal()))
+            {
+                if (!isFirstEntry)
+                    m_writer->emit(",\n");
+                else
+                    isFirstEntry = false;
+                m_writer->emit("&");
+                m_writer->emit(getName(witnessTableVal));
+            }
             else
             {
                 // TODO: handle other witness table entry types.
@@ -1745,16 +1754,11 @@ void CPPSourceEmitter::_maybeEmitWitnessTableTypeDefinition(
     emitSimpleType(interfaceType);
     m_writer->emit("\n{\n");
     m_writer->indent();
-    bool isFirstEntry = true;
     for (Index i = 0; i < sortedWitnessTableEntries.getCount(); i++)
     {
         auto entry = sortedWitnessTableEntries[i];
         if (auto funcVal = as<IRFunc>(entry->satisfyingVal.get()))
         {
-            if (!isFirstEntry)
-                m_writer->emit(",\n");
-            else
-                isFirstEntry = false;
             emitType(funcVal->getResultType());
             m_writer->emit(" (KernelContext::*");
             m_writer->emit(getName(entry->requirementKey.get()));
@@ -1777,6 +1781,13 @@ void CPPSourceEmitter::_maybeEmitWitnessTableTypeDefinition(
             }
             m_writer->emit(");\n");
         }
+        else if (auto witnessTableVal = as<IRWitnessTable>(entry->getSatisfyingVal()))
+        {
+            emitType(as<IRType>(witnessTableVal->getOperand(0)));
+            m_writer->emit("* ");
+            m_writer->emit(getName(entry->requirementKey.get()));
+            m_writer->emit(";\n");
+        }
         else
         {
             // TODO: handle other witness table entry types.
-- 
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