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Changelog

v0.1.0a4 (unreleased)

Enhancements

  • Prevent needless line-wrapping of exception messages. This was inspired by similar code in GAP.jl.

Bug Fixes

  • Fixed segmentation fault that could occur upon all GAPErrors after a large number of errors from GAP have been caught and handled [#12].
  • Improved error handling around more parts of the code, particularly around any code that can result in executing arbitrary GAP code.

v0.1.0a3 (2021-02-15)

Enhancements

  • Renamed the special method _gap_, for converting arbitrary Python objects to GAP objects, to __gap__ as inspired by the discussion at https://trac.sagemath.org/ticket/31297#comment:23
    • Likewise, the special method _gap_init_ is now named __gap_eval__ to emphasize that it returns a string to be passed to Gap.eval(). It still does not take any arguments.
  • Added GapObj.python() method for converting a GapObj to its equivalent type if one exists (it does not always, but it does in the cases where there is an equivalent type built into Python).
    • GapList.python() and GapRecord.python() also recursively convert the values they contain to equivalent Python types if possible.
  • New interface for registering converters to/from GAP object types:
    • Gap.register_converter is replaced with the Gap.convert_from decorator.
    • The GapObj.convert_to decorator can be used to register new conversion methods on GapObj, or specific subclasses thereof.
  • Added some C-level utility methods on GapInteger to help convert to different integer types (C long ints and mpz_t, depending on the size of the int). This helps with more efficient conversion to Sage Integers without having to pass through an intermediary Python int.
  • Implemented the __invert__ and __neg__ magic methods for GapObj.
  • Implemented a default __bool__ for all GapObj which returns False if its value is equal to zero.
  • Install the .pyx sources so that Cython tracebacks can work better.

Bug fixes

  • When converting a GapRecord to a dict with dict(rec) the keys remain as GapString instead of str. This is more consistent with the fact that the values are not converted to Python equivalents.
  • If an arbitrary GAP error occurs while looking up a global variable with Gap.__getattr__ it is handled and re-raised as an AttributeError.
  • The Gap.__repr__ method displays names of subclasses correctly.

v0.1.0a2 (2021-02-03)

Bug fixes

  • Made fixes for MacOS and Cygwin support.

v0.1.0a1 (2021-02-03)

Enhancements

  • Added LRU cache for functions defined with gap.gap_functions, restoring some of the caching functionality from Sage's Gap.function_factory.

Bug fixes

  • Fixed bug in multi-indexing of nested lists.
  • Fixed minor formatting difference in the IndexError message when indexing single lists versus multi-indexing nested lists.
  • Fixed a bug when using functions defined with gap.gap_function as arguments to another GAP function before they have been called once.

v0.1.0a0 (2021-01-26)

  • Initial alpha release for testing against SageMath.