From 255fd5873f65a6b01d5385c277d55612dc3cc587 Mon Sep 17 00:00:00 2001
From: Yong He <yonghe@outlook.com>
Date: Mon, 28 Mar 2022 22:14:33 -0700
Subject: Allow slangc to generate exe from .slang file. (#2170)

---
 source/slang/slang-emit-c-like.cpp | 37 ++++++++-----------------------------
 1 file changed, 8 insertions(+), 29 deletions(-)

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

diff --git a/source/slang/slang-emit-c-like.cpp b/source/slang/slang-emit-c-like.cpp
index d3dd0e5b8..eb178a366 100644
--- a/source/slang/slang-emit-c-like.cpp
+++ b/source/slang/slang-emit-c-like.cpp
@@ -78,6 +78,7 @@ struct CLikeSourceEmitter::ComputeEmitActionsContext
             return SourceLanguage::C;
         }
         case CodeGenTarget::CPPSource:
+        case CodeGenTarget::HostCPPSource:
         {
             return SourceLanguage::CPP;
         }
@@ -741,28 +742,6 @@ String CLikeSourceEmitter::_generateUniqueName(const UnownedStringSlice& name)
 
 String CLikeSourceEmitter::generateName(IRInst* inst)
 {
-    // Handle `__exportDirectly` decoration before all else
-    if (inst->findDecoration<IR__exportDirectly>())
-    {
-        // If instruction has a NameHint, we naively emit it as a namespace
-        // This is automatically handled in `getNameforNameHint` when the
-        // `__exportDirectly` decoration is found, so we can just return it.
-        // TODO: This is a very hacky solution.
-        // 
-        // Another option would be to have two separate decorations, one that
-        // handles this namespace, and a separate decoration for unmangled names.
-        if (auto nameHintDecoration = inst->findDecoration<IRNameHintDecoration>())
-        {
-            return nameHintDecoration->getName();
-        }
-        // Otherwise, we just want the instruction to not be mangled, which is
-        // similarly handled in `getMangledName`.
-        if (auto linkageDecoration = inst->findDecoration<IRLinkageDecoration>())
-        {
-            return linkageDecoration->getMangledName();
-        }
-    }
-
     // If the instruction names something
     // that should be emitted as a target intrinsic,
     // then use that name instead.
@@ -802,6 +781,13 @@ String CLikeSourceEmitter::generateName(IRInst* inst)
         return generateEntryPointNameImpl(entryPointDecor);
     }
 
+    // If the instruction has a linkage decoration, just use that.
+    if (auto externCppDecoration = inst->findDecoration<IRExternCppDecoration>())
+    {
+        // Just use the linkages mangled name directly.
+        return externCppDecoration->getName();
+    }
+
     // If we have a name hint on the instruction, then we will try to use that
     // to provide the basis for the actual name in the output code.
     if(auto nameHintDecoration = inst->findDecoration<IRNameHintDecoration>())
@@ -2915,13 +2901,6 @@ void CLikeSourceEmitter::emitStruct(IRStructType* structType)
         return;
     }
 
-    // If the selected `struct` type is externally defined
-    // then we also don't want to emit anything.
-    if (auto externLibDecoration = structType->findDecoration<IR__externLib>())
-    {
-        return;
-    }
-
     m_writer->emit("struct ");
 
     emitPostKeywordTypeAttributes(structType);
-- 
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