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57 lines
1.3 KiB
57 lines
1.3 KiB
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Groups markers (...), [...] and {...}
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"""
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from rebulk import Rebulk
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from ...options import ConfigurationException
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def groups(config):
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"""
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Builder for rebulk object.
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:param config: rule configuration
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:type config: dict
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:return: Created Rebulk object
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:rtype: Rebulk
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"""
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rebulk = Rebulk()
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rebulk.defaults(name="group", marker=True)
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starting = config['starting']
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ending = config['ending']
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if len(starting) != len(ending):
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raise ConfigurationException("Starting and ending groups must have the same length")
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def mark_groups(input_string):
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"""
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Functional pattern to mark groups (...), [...] and {...}.
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:param input_string:
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:return:
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"""
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openings = ([], ) * len(starting)
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i = 0
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ret = []
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for char in input_string:
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start_type = starting.find(char)
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if start_type > -1:
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openings[start_type].append(i)
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i += 1
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end_type = ending.find(char)
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if end_type > -1:
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try:
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start_index = openings[end_type].pop()
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ret.append((start_index, i))
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except IndexError:
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pass
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return ret
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rebulk.functional(mark_groups)
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return rebulk
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