Reworked the way .NET objects are constructed from Python#1651
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lostmsu merged 1 commit intopythonnet:masterfrom Jan 4, 2022
Merged
Reworked the way .NET objects are constructed from Python#1651lostmsu merged 1 commit intopythonnet:masterfrom
lostmsu merged 1 commit intopythonnet:masterfrom
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was: tp_new implementation would call .NET constructor and return a fully constructed object now: Except for some special .NET types tp_new creates uninitialized .NET object, which is later initialized by calling __init__. __init__ is set using type dictionary to a MethodObject, that contains ConstructorInfo[] instead of MethodInfo[] This allows Python to: 1) freely override __init__ 2) when deriving from .NET types call base __init__ (e.g. .NET constructor), and choose the overload as needed fixes pythonnet#238
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What does this implement/fix? Explain your changes.
Was:
tp_newimplementation would call .NET constructor and return a fully constructed objectNow:
Except for some special .NET types
tp_newcreates uninitialized .NET object, which is later initialized by callinguninitialized_inst.__init__(...).__init__is set in type dictionary to aMethodObject, that containsConstructorInfo[]instead ofMethodInfo[]This allows Python to:
__init__when deriving from .NET types__init__(e.g. .NET constructor), and choose the overload as neededFailing to call base
__init__in this scenario will lead to an undefined behavior.Does this close any currently open issues?
fixes #238
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