Make artifact an interface (#2195)

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

* Compile to a dxil library.

* Added CompileProduct.

* Support handling of ModuleLibrary.

* CacheBehavior -> Cache

* Use CompileProduct for -r references.

* CompileProduct -> Artifact.

* Determining an artifact type on binding.

* Determine binary linkability.

* Added Artifact::exists.

* Added ArtifactKeep.

* Small fixes.

* Small improvements to Artifact.

* Add zip extension.

* Fix some comments.

* Fix multiple adding of PublicDecoration.
Make public output export for DXIL/lib.
Add checking for simpleDecorations such that only added once.

* Use 'whole program' to identify library build.

* Move slang-artifact into compiler-core.

* Split out Keep free functions.

* Artifact::Keep -> ArtifactKeep.

* Handle libraries as artifacts.

* Add -target dxil so test infrastructure knows it needs DXC.

* Linking working in DXC.

* Improve handling around emit for 'export'.

* Add comment around Artifact name.

* Render test working with linking.

* Improvements around Artifact handling.

* Add ArtifactPayloadInfo.

* Small tidy up around artifact.

* Split out code to get info about Artifacts into artifact-info.cpp/.h

* IArtifact interface and IArtifactInstance interface.

* Fix small issues.

* Fix compilation warning issue.

* Fix missing SLANG_OVERRIDE.

* Small fixes to make compilation work on Visual Studio 2022.

* Small improvements to Artifact interface/naming.

* Added Desc with each element in IArchive to allow more flexibility in usage.

* Fix clang warning issue.

* Add ArtifactPayload::Diagnostics

* More discussion around IArtifact usage.

* Re-add slang-artifact.h which was removed during merge.

* Fix typo identified in review.

1 files changed, 12 insertions, 4 deletions

diff --git a/source/slang/slang-module-library.cpp b/source/slang/slang-module-library.cpp
index 76bb85ebb..140be4d64 100644
--- a/source/slang/slang-module-library.cpp
+++ b/source/slang/slang-module-library.cpp
@@ -13,6 +13,14 @@
 
 namespace Slang {
 
+void* ModuleLibrary::getInterface(const Guid& uuid)
+{
+    if (uuid == ISlangUnknown::getTypeGuid() || uuid == IArtifactInstance::getTypeGuid())
+    {
+        return static_cast<IArtifactInstance*>(this);
+    }
+    return nullptr;
+}
 
 SlangResult loadModuleLibrary(const Byte* inBytes, size_t bytesCount, EndToEndCompileRequest* req, RefPtr<ModuleLibrary>& outLibrary)
 {
@@ -67,9 +75,9 @@ SlangResult loadModuleLibrary(const Byte* inBytes, size_t bytesCount, EndToEndCo
     return SLANG_OK;
 }
 
-SlangResult loadModuleLibrary(ArtifactKeep keep, Artifact* product, EndToEndCompileRequest* req, RefPtr<ModuleLibrary>& outLibrary)
+SlangResult loadModuleLibrary(ArtifactKeep keep, IArtifact* artifact, EndToEndCompileRequest* req, RefPtr<ModuleLibrary>& outLibrary)
 {
-    if (auto foundLibrary = product->findObjectInstance<ModuleLibrary>())
+    if (auto foundLibrary = (ModuleLibrary*)artifact->findElementObject(ModuleLibrary::getTypeGuid()))
     {
         outLibrary = foundLibrary;
         return SLANG_OK;
@@ -77,7 +85,7 @@ SlangResult loadModuleLibrary(ArtifactKeep keep, Artifact* product, EndToEndComp
 
     // Load the blob
     ComPtr<ISlangBlob> blob;
-    SLANG_RETURN_ON_FAIL(product->loadBlob(getIntermediateKeep(keep), blob));
+    SLANG_RETURN_ON_FAIL(artifact->loadBlob(getIntermediateKeep(keep), blob.writeRef()));
 
     // Load the module
     RefPtr<ModuleLibrary> library;
@@ -85,7 +93,7 @@ SlangResult loadModuleLibrary(ArtifactKeep keep, Artifact* product, EndToEndComp
     
     if (canKeep(keep))
     {
-        product->add(Artifact::Entry::Style::Artifact, library);
+        artifact->addElement(artifact->getDesc(), library);
     }
 
     outLibrary = library;