...

1 files changed, 41 insertions, 0 deletions

diff --git a/include/cru/platform/Check.h b/include/cru/platform/Check.h
new file mode 100644
index 00000000..1750c7e8
--- /dev/null
+++ b/include/cru/platform/Check.h
@@ -0,0 +1,41 @@
+#pragma once
+#include "Exception.h"
+#include "Resource.h"
+
+#include "cru/common/String.h"
+#include "cru/common/Format.h"
+
+#include <memory>
+#include <type_traits>
+
+namespace cru::platform {
+template <typename TTarget>
+TTarget* CheckPlatform(IPlatformResource* resource,
+                       const String& target_platform) {
+  Expects(resource);
+  const auto result = dynamic_cast<TTarget*>(resource);
+  if (result == nullptr) {
+    throw UnsupportPlatformException(Format(
+        u"Try to convert resource to target platform failed. Platform id of "
+        "resource to convert: {} . Target platform id: {} .",
+        resource->GetPlatformId(), target_platform));
+  }
+  return result;
+}
+
+template <typename TTarget, typename TSource>
+std::shared_ptr<TTarget> CheckPlatform(const std::shared_ptr<TSource>& resource,
+                                       const String& target_platform) {
+  static_assert(std::is_base_of_v<IPlatformResource, TSource>,
+                "TSource must be a subclass of INativeResource.");
+  Expects(resource);
+  const auto result = std::dynamic_pointer_cast<TTarget>(resource);
+  if (result == nullptr) {
+    throw UnsupportPlatformException(Format(
+        u"Try to convert resource to target platform failed. Platform id of "
+        "resource to convert: {} . Target platform id: {} .",
+        resource->GetPlatformId(), target_platform));
+  }
+  return result;
+}
+}  // namespace cru::platform