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60 lines
2.0 KiB
60 lines
2.0 KiB
"""
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Masks
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=====
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Masks are related to filters. Filters can block the processing of particular parts of the xml
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hierarchy but they can only work on node level. If the part of the xml hierarchy that you want to
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filter out is read in as an instance of one of the classes in parser/doxygen/*.py then you can use
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the filters. However, if you want to filter out an attribute from one of the nodes (and some of the
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xml child nodes are read in as attributes on their parents) then you can't use a filter.
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We introduce the Mask's to fulfil this need. The masks are designed to be applied to a particular
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node type and to limit the access to particular attributes on the node. For example, then
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NoParameterNamesMask wraps a node a returns all its standard attributes but returns None for the
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'declname' and 'defname' attributes.
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Currently the Mask functionality is only used for the text signature rendering for doing function
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matching.
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"""
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class NoParameterNamesMask:
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def __init__(self, data_object) -> None:
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self.data_object = data_object
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def __getattr__(self, attr):
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if attr in ["declname", "defname", "defval"]:
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return None
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return getattr(self.data_object, attr)
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class MaskFactoryBase:
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def mask(self, data_object):
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raise NotImplementedError
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class MaskFactory(MaskFactoryBase):
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def __init__(self, lookup):
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self.lookup = lookup
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def mask(self, data_object):
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try:
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node_type = data_object.node_type
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except AttributeError as e:
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# Horrible hack to silence errors on filtering unicode objects
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# until we fix the parsing
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if isinstance(data_object, str):
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node_type = "unicode"
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else:
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raise e
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if node_type in self.lookup:
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Mask = self.lookup[node_type]
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return Mask(data_object)
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return data_object
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class NullMaskFactory(MaskFactoryBase):
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def mask(self, data_object):
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return data_object
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