SZVisitor

SZVisitor is a software component or library designed to facilitate the traversal and manipulation of data structures, particularly those organized in a tree-like or hierarchical manner. The term "visitor" itself suggests a pattern where an external object (the visitor) is applied to each element of a data structure. This allows for operations to be performed on the elements without modifying the structure's internal code.

The primary purpose of SZVisitor is to decouple algorithms from the data structures they operate on. By implementing the visitor pattern, developers can add new operations to a complex data structure without having to change the classes that define the structure itself. This promotes a more modular and maintainable codebase.

SZVisitor typically involves two main components: the "Visitable" elements (the nodes or items within the data structure) and the "Visitor" interface or abstract class. The Visitable elements provide an `accept` method, which takes an instance of the Visitor as an argument. When `accept` is called, it invokes the appropriate method on the Visitor, passing itself as a parameter. This allows the Visitor to perform its specific operation on the Visitable element.

Common use cases for SZVisitor include tasks like serialization, deserialization, data validation, reporting, and applying transformations to elements within a complex system. It is particularly useful in scenarios where the number of operations on a data structure is expected to grow over time.