COM interfaces with host callable (#2258)

* #include an absolute path didn't work - because paths were taken to always be relative.

* Use TerminatedUnownedStringSlice for literals in output C++.

* Remove Escape/Unescape functions used in slang-token-reader.cpp
Add target type of 'host-cpp' etc to map to the target types.

* Fix some corner cases around string encoding.

* Added unit test for string escaping.
Fixed some assorted escaping bugs.

* Updated test output.

* Added decode test.

* Stop using hex output, to get around 'greedy' aspect. Use octal instead.

* Added HostHostCallable
Small changes to use ArtifactDesc/Info instead of large switches.

* Fix C++ emit to handle arbitrary function export.

* Add options handling for callable without an output being specified.

* Can compile with COM interface. Added example using com interface.

* Use the IR Ptr type instead of hack in C++ emit for interfaces.

* Fix issue with outputting the COM call when ptr is used.

* Fix crash issue on compilation failure.

1 files changed, 4 insertions, 12 deletions

diff --git a/source/slang/slang-type-layout.cpp b/source/slang/slang-type-layout.cpp
index cd81c6173..09a21fb6f 100644
--- a/source/slang/slang-type-layout.cpp
+++ b/source/slang/slang-type-layout.cpp
@@ -4,6 +4,8 @@
 #include "slang-syntax.h"
 #include "slang-ir-insts.h"
 
+#include "../compiler-core/slang-artifact-info.h"
+
 #include <assert.h>
 
 namespace Slang {
@@ -1403,6 +1405,7 @@ LayoutRulesFamilyImpl* getDefaultLayoutRulesFamilyForTarget(TargetRequest* targe
     case CodeGenTarget::SPIRVAssembly:
         return &kGLSLLayoutRulesFamilyImpl;
 
+    case CodeGenTarget::HostHostCallable:
     case CodeGenTarget::ShaderHostCallable:
     case CodeGenTarget::HostExecutable:
     case CodeGenTarget::ShaderSharedLibrary:
@@ -1603,18 +1606,7 @@ bool isKhronosTarget(TargetRequest* targetReq)
 
 bool isCPUTarget(TargetRequest* targetReq)
 {
-    switch( targetReq->getTarget() )
-    {
-    default:
-        return false;
-
-    case CodeGenTarget::CPPSource:
-    case CodeGenTarget::CSource:
-    case CodeGenTarget::ShaderHostCallable:
-    case CodeGenTarget::HostExecutable:
-    case CodeGenTarget::ShaderSharedLibrary:
-        return true;
-    }
+    return ArtifactInfoUtil::isCpuTarget(ArtifactDesc::makeFromCompileTarget(asExternal(targetReq->getTarget())));
 }
 
 bool isCUDATarget(TargetRequest* targetReq)