Artifact and ICastable (#2351)

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

* WIP with hierarchical enums.

* Some small fixes and improvements around artifact desc related types.

* Improvements around hierarchical enum.

* Fixes to get Artifact types refactor to be able to execute tests.

* Attempt to better categorize PTX.

* Work around for potentially unused function warning.

* Typo fix.

* Simplify Artifact header.

* Small improvements around Artifact kind/payload/style.

* Added IDestroyable/ICastable

* Add IArtifactList.

* First impl of IArtifactUtil.

* Use the ICastable interface for IArtifactRepresentation.

* Added IArtifactRepresentation & IArtifactAssociated.

* Add SLANG_OVERRIDE to avoid gcc/clang warning.

* Fix calling convention issue on win32.

* Fix missing SLANG_OVERRIDE.

* First attempt at file abstraction around Artifact.

* Added creation of lock file.

* Move functionality for determining file paths to the IArtifactUtil.
Add casting to ICastable.

* Added some casting/finding mechanisms.

* Simplify IArtifact interface, and use Items for file reps.

* Fix problem with libraries on DXIL.

* Split out ArtifactRepresentation.

* Move ArtifactDesc functionality to ArtifactDescUtil. ArtifactInfoUtil becomes ArtifactDescUtil.

* Split implementations from the interfaces for Artifact.

* Use TypeTextUtil for target name outputting.

* Add artifact impls.

* Add ICastableList

* Added UnknownCastableAdapter

* Make ISlangSharedLibrary derive from ICastable, and remain backwards compatible with slang-llvm.

* Refactor Representation on Artifact.

* Make our ISlangBlobs also derive from ICastable.
Make ISlangBlob atomic ref counted.

* Fix typo.

1 files changed, 61 insertions, 4 deletions

diff --git a/source/core/slang-blob.cpp b/source/core/slang-blob.cpp
index 569991508..0da8f6292 100644
--- a/source/core/slang-blob.cpp
+++ b/source/core/slang-blob.cpp
@@ -2,19 +2,76 @@
 
 namespace Slang {
 
+/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! BlobBase !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
+
 ISlangUnknown* BlobBase::getInterface(const Guid& guid)
 {
-    return (guid == ISlangUnknown::getTypeGuid() || guid == ISlangBlob::getTypeGuid()) ? static_cast<ISlangBlob*>(this) : nullptr;
+    if (guid == ISlangUnknown::getTypeGuid() || 
+        guid == ISlangBlob::getTypeGuid())
+    {
+        return static_cast<ISlangBlob*>(this);
+    }
+    if (guid == ICastable::getTypeGuid())
+    {
+        return static_cast<ICastable*>(this);
+    }
+    return nullptr;
+}
+
+void* BlobBase::getObject(const Guid& guid)
+{
+    SLANG_UNUSED(guid);
+    return nullptr;
 }
 
+void* BlobBase::castAs(const SlangUUID& guid)
+{
+    if (auto intf = getInterface(guid))
+    {
+        return intf;
+    }
+    return getObject(guid);
+}
+
+/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! StaticBlob !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! */
+
 SlangResult StaticBlob::queryInterface(SlangUUID const& guid, void** outObject) 
 {
-    if (guid == ISlangUnknown::getTypeGuid() || guid == ISlangBlob::getTypeGuid())
+    if (auto intf = getInterface(guid))
     {
-        *outObject = static_cast<ISlangBlob*>(this);
+        *outObject = intf;
         return SLANG_OK;
     }
     return SLANG_E_NO_INTERFACE;
 }
- 
+
+void* StaticBlob::castAs(const SlangUUID& guid)
+{
+    if (auto intf = getInterface(guid))
+    {
+        return intf;
+    }
+    return getObject(guid);
+}
+
+ISlangUnknown* StaticBlob::getInterface(const Guid& guid)
+{
+    if (guid == ISlangUnknown::getTypeGuid() ||
+        guid == ISlangBlob::getTypeGuid())
+    {
+        return static_cast<ISlangBlob*>(this);
+    }
+    if (guid == ICastable::getTypeGuid())
+    {
+        return static_cast<ICastable*>(this);
+    }
+    return nullptr;
+}
+
+void* StaticBlob::getObject(const Guid& guid)
+{
+    SLANG_UNUSED(guid);
+    return nullptr;
+}
+
 } // namespace Slang