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cffi /

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cffi
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cffi

Foreign Function Interface for Python calling C code.

Mailing list: https://groups.google.com/forum/#!forum/python-cffi

Initial motivation

http://mail.python.org/pipermail/pypy-dev/2012-May/009915.html

Current status

  • works as a ctypes replacement
  • can use internally either ctypes or a C extension module

Next steps

the verify() step, which should handle:

  • completing "...;" structs

  • checking the other structs, and the arguments to functions, using the real C compiler

  • simple "#define FOO value" macros

  • macros of the kind "#define funcname otherfuncname"

  • more complicated macros "#define foo(a, b, c) ..."

  • checking and correcting the value of the enum {} declarations

  • probably also fixing the array lengths, e.g. declared as a field "int foo[...];"

generating C extensions:

  • this is needed anyway to call macros

  • faster, libffi-free way to call C code

  • partial blockers: callbacks (probably still use libffi)

_ffi backend for PyPy