Developer notes

These notes are meant to help developers and contributors with regards to some details of the implementation and coding style of the project.

C++ codebase

The C++ codebase currently targets C++11 compliance. It is header-only since one of the focus of the library is speed.

Python bindings

Python bindings targets Python 3.6 and above. The bindings are hand-written and relies on cppy (https://github.com/nucleic/cppy). Kiwisolver tries to use a reasonably modern C API and to support sub-interpreter, this has a couple of consequences:

  • all the non exported symbol are enclosed in anonymous namespaces

  • kiwisolver does not use static types and only dynamical types (note that the type slots and related structures are stored in a static variable)

  • modules use the multi-phases initialization mechanism as defined in PEP 489 – Multi-phase extension module initialization

  • static variables use is limited to type slots, method def