intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 37 insertions, 0 deletions

diff --git a/library/cpp/yson_pull/consumer.h b/library/cpp/yson_pull/consumer.h
new file mode 100644
index 0000000000..f3b1398d4c
--- /dev/null
+++ b/library/cpp/yson_pull/consumer.h
@@ -0,0 +1,37 @@
+#pragma once
+
+#include "event.h"
+
+#include <util/generic/strbuf.h>
+#include <util/system/types.h>
+
+namespace NYsonPull {
+    class IConsumer {
+    public:
+        virtual ~IConsumer() = default;
+
+        virtual void OnBeginStream() = 0;
+        virtual void OnEndStream() = 0;
+
+        virtual void OnBeginList() = 0;
+        virtual void OnEndList() = 0;
+
+        virtual void OnBeginMap() = 0;
+        virtual void OnEndMap() = 0;
+
+        virtual void OnBeginAttributes() = 0;
+        virtual void OnEndAttributes() = 0;
+
+        virtual void OnKey(TStringBuf name) = 0;
+
+        virtual void OnEntity() = 0;
+        virtual void OnScalarBoolean(bool value) = 0;
+        virtual void OnScalarInt64(i64 value) = 0;
+        virtual void OnScalarUInt64(ui64 value) = 0;
+        virtual void OnScalarFloat64(double value) = 0;
+        virtual void OnScalarString(TStringBuf value) = 0;
+
+        virtual void OnScalar(const TScalar& value);
+        virtual void OnEvent(const TEvent& value);
+    };
+}