intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 45 insertions, 0 deletions

diff --git a/library/cpp/yt/exception/exception.h b/library/cpp/yt/exception/exception.h
new file mode 100644
index 0000000000..7d35637d60
--- /dev/null
+++ b/library/cpp/yt/exception/exception.h
@@ -0,0 +1,45 @@
+#pragma once
+
+#include <util/generic/string.h>
+
+#include <exception>
+
+namespace NYT {
+
+////////////////////////////////////////////////////////////////////////////////
+// These are poor man's versions of NYT::TErrorException to be used in
+// a limited subset of core libraries that are needed to implement NYT::TError.
+
+class TSimpleException
+    : public std::exception
+{
+public:
+    explicit TSimpleException(TString message);
+
+    const TString& GetMesage() const;
+    const char* what() const noexcept override;
+
+protected:
+    const TString Message_;
+};
+
+class TCompositeException
+    : public TSimpleException
+{
+public:
+    explicit TCompositeException(TString message);
+    TCompositeException(
+        const std::exception& exception,
+        TString message);
+
+    const std::exception_ptr& GetInnerException() const;
+    const char* what() const noexcept override;
+
+private:
+    const std::exception_ptr InnerException_;
+    const TString What_;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+
+} // namespace NYT