Module matcher

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Base class for matchers.

Classes

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Matcher

FactoryMatcher
Imagine an abstract property called 'factory' below.

MatcherTypeException
Used to flag problems related to matcher types.

Relations
Some kind of parent/child management for wrapped classes that I no longer understand, but which appears to be used and working (it doesn't look like rocket science, but until it breaks I don't care enough to know more...)

Functions

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raiseException(msg)

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case_type(matcher, if_factory, if_matcher)

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case_instance(matcher, if_wrapper, if_matcher)

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canonical_matcher_type(matcher)
Given a "constructor" (either a real constructor, or an annotated function), generate something that uniquely identifies that (the class for real constructors, and the embedded function for the output from the factories).

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matcher_type(matcher, fail=True)

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matcher_map(map_)
Rewrite a map whose keys are matchers to use canonical_matcher_type.

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matcher_instance(matcher)

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relations(base)

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is_child(child, base, fail=True)

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add_child(base, child)

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add_children(base, *children)

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Variables

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_Matcher = ABCMeta('_Matcher', (object,), {})
ABC used to identify matchers.

_FactoryMatcher = ABCMeta('_FactoryMatcher', (object,), {})
ABC used to identify factory matchers (have a property factory that identifies the matcher they generate).

Variables Details

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_Matcher

ABC used to identify matchers.

Note that graph traversal assumes subclasses are hashable and iterable.

Value:

ABCMeta('_Matcher', (object,), {})