Scrap Your Boilerplate Plus Plus (sybpp)

Project details here.

This project implements functionality from Scrap Your Boilerplate: A Practical Design Pattern for Generic Programming, Lammel, Peyton-Jones, 2003. The paper can be found here.

Scrap Your Boilerplate creates generic traversals over data types. Users identify a target type and provide a function that accepts the identified type as an input parameter. sybpp computes, at compile-time, the generic traversal code. This removes the need for users to implement "boilerplate" data structure traversal code (a visitor pattern) in order apply a function.

Notes

Users are required to wrap data types sybpp encounters with the BOOST_FUSION_ADAPT_STRUCT macro. Review the demo.cpp file for code examples.

License

Boost Software License 1.0

Features

• everywhere
• one-layer traversal
• recursive traversal
• queries
• transform
• functions, functors, std::bind, lambdas supported
• STL container types
• supports std::variant, std::tuple, std::pair, std::optional

Special Thanks

Hartmut Kaiser for suggesting this paper.

Author

Christopher Taylor

Dependencies

• C++17
• Boost.Fusion