Implement streaming scan through file and use in rocksdb serializer and python

src/ifcparse/file_open_status.h

@@ -0,0 +1,42 @@
+#ifndef FILE_OPEN_STATUS_H
+#define FILE_OPEN_STATUS_H
+
+#include "ifc_parse_api.h"
+
+namespace IfcParse {
+
+    class IFC_PARSE_API file_open_status {
+    public:
+        enum file_open_enum {
+            SUCCESS,
+            READ_ERROR,
+            NO_HEADER,
+            UNSUPPORTED_SCHEMA,
+            INVALID_SYNTAX,
+            UNKNOWN
+        };
+
+    private:
+        file_open_enum error_;
+
+    public:
+        file_open_status(file_open_enum error = UNKNOWN)
+            : error_(error) {
+        }
+
+        operator file_open_enum() const {
+            return error_;
+        }
+
+        file_open_enum value() const {
+            return error_;
+        }
+
+        operator bool() const {
+            return error_ == SUCCESS;
+        }
+    };
+
+}
+
+#endif // !FILE_OPEN_STATUS_H