Artifact split interface and implementation (#2349)

* #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.

1 files changed, 147 insertions, 0 deletions

diff --git a/source/compiler-core/slang-artifact-representation-impl.cpp b/source/compiler-core/slang-artifact-representation-impl.cpp
new file mode 100644
index 000000000..20480ae07
--- /dev/null
+++ b/source/compiler-core/slang-artifact-representation-impl.cpp
@@ -0,0 +1,147 @@
+// slang-artifact-representation-impl.cpp
+#include "slang-artifact-representation-impl.h"
+
+#include "../core/slang-file-system.h"
+
+#include "../core/slang-type-text-util.h"
+#include "../core/slang-io.h"
+#include "../core/slang-array-view.h"
+
+#include "slang-artifact-util.h"
+
+namespace Slang {
+
+/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!! FileArtifactRepresentation !!!!!!!!!!!!!!!!!!!!!!!!!!! */
+
+void* FileArtifactRepresentation::getInterface(const Guid& guid)
+{
+    if (guid == ISlangUnknown::getTypeGuid() ||
+        guid == ICastable::getTypeGuid() ||
+        guid == IArtifactRepresentation::getTypeGuid() ||
+        guid == IFileArtifactRepresentation::getTypeGuid())
+    {
+        return static_cast<IFileArtifactRepresentation*>(this);
+    }
+    return nullptr;
+}
+
+void* FileArtifactRepresentation::getObject(const Guid& guid)
+{
+    SLANG_UNUSED(guid);
+    return nullptr;
+}
+
+ISlangMutableFileSystem* FileArtifactRepresentation::_getFileSystem()
+{
+    return m_fileSystem ? m_fileSystem : OSFileSystem::getMutableSingleton();
+}
+
+void* FileArtifactRepresentation::castAs(const Guid& guid)
+{
+    if (auto intf = getInterface(guid))
+    {
+        return intf;
+    }
+    return getObject(guid);
+}
+
+SlangResult FileArtifactRepresentation::writeToBlob(ISlangBlob** blob)
+{
+    if (m_kind == Kind::NameOnly)
+    {
+        // If it's referenced by a name only, it's a file that *can't* be loaded as a blob in general.
+        return SLANG_E_NOT_AVAILABLE;
+    }
+
+    auto fileSystem = _getFileSystem();
+    return fileSystem->loadFile(m_path.getBuffer(), blob);
+}
+
+bool FileArtifactRepresentation::exists()
+{
+    // TODO(JS):
+    // If it's a name only it's hard to know what exists should do. It can't *check* because it relies on the 'system' doing 
+    // the actual location. We could ask the IArtifactUtil, and that could change the behavior.
+    // For now we just assume it does.
+    if (m_kind == Kind::NameOnly)
+    {
+        return true;
+    }
+
+    auto fileSystem = _getFileSystem();
+
+    SlangPathType pathType;
+    const auto res = fileSystem->getPathType(m_path.getBuffer(), &pathType);
+
+    // It exists if it is a file
+    return SLANG_SUCCEEDED(res) && pathType == SLANG_PATH_TYPE_FILE;
+}
+
+FileArtifactRepresentation::~FileArtifactRepresentation()
+{
+    if (m_kind == Kind::Owned)
+    {
+        auto fileSystem = _getFileSystem();
+        fileSystem->remove(m_path.getBuffer());
+    }
+}
+
+/* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!! LockFile !!!!!!!!!!!!!!!!!!!!!!!!!!! */
+
+void* LockFile::getInterface(const Guid& guid)
+{
+    if (guid == ISlangUnknown::getTypeGuid() ||
+        guid == ICastable::getTypeGuid() ||
+        guid == ILockFile::getTypeGuid())
+    {
+        return static_cast<ILockFile*>(this);
+    }
+    return nullptr;
+}
+
+void* LockFile::getObject(const Guid& guid)
+{
+    SLANG_UNUSED(guid);
+    return nullptr;
+}
+
+ISlangMutableFileSystem* LockFile::_getFileSystem()
+{
+    return m_fileSystem ? m_fileSystem : OSFileSystem::getMutableSingleton();
+}
+
+void* LockFile::castAs(const Guid& guid)
+{
+    if (auto intf = getInterface(guid))
+    {
+        return intf;
+    }
+    return getObject(guid);
+}
+
+const char* LockFile::getPath()
+{
+    return (m_path.getLength() > 0) ? m_path.getBuffer() : nullptr;
+}
+
+ISlangMutableFileSystem* LockFile::getFileSystem()
+{
+    return m_fileSystem;
+}
+
+LockFile::~LockFile()
+{
+    if (m_path.getLength() > 0)
+    {
+        auto fileSystem = _getFileSystem();
+        fileSystem->remove(m_path.getBuffer());
+    }
+}
+
+void LockFile::disown()
+{
+    m_path = String();
+    m_fileSystem.setNull();
+}
+
+} // namespace Slang