Mercurial Repositories > eric / file comparison
comparison: eric6/ThirdParty/Pygments/pygments/filter.py
eric6/ThirdParty/Pygments/pygments/filter.py
- changeset 8258
- 82b608e352ec
- parent 8257
- 28146736bbfc
- child 8259
- 2bbec88047dd
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| 8257:28146736bbfc | 8258:82b608e352ec |
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| 1 # -*- coding: utf-8 -*- | |
| 2 """ | |
| 3 pygments.filter | |
| 4 ~~~~~~~~~~~~~~~ | |
| 5 | |
| 6 Module that implements the default filter. | |
| 7 | |
| 8 :copyright: Copyright 2006-2021 by the Pygments team, see AUTHORS. | |
| 9 :license: BSD, see LICENSE for details. | |
| 10 """ | |
| 11 | |
| 12 | |
| 13 def apply_filters(stream, filters, lexer=None): | |
| 14 """ | |
| 15 Use this method to apply an iterable of filters to | |
| 16 a stream. If lexer is given it's forwarded to the | |
| 17 filter, otherwise the filter receives `None`. | |
| 18 """ | |
| 19 def _apply(filter_, stream): | |
| 20 yield from filter_.filter(lexer, stream) | |
| 21 for filter_ in filters: | |
| 22 stream = _apply(filter_, stream) | |
| 23 return stream | |
| 24 | |
| 25 | |
| 26 def simplefilter(f): | |
| 27 """ | |
| 28 Decorator that converts a function into a filter:: | |
| 29 | |
| 30 @simplefilter | |
| 31 def lowercase(self, lexer, stream, options): | |
| 32 for ttype, value in stream: | |
| 33 yield ttype, value.lower() | |
| 34 """ | |
| 35 return type(f.__name__, (FunctionFilter,), { | |
| 36 '__module__': getattr(f, '__module__'), | |
| 37 '__doc__': f.__doc__, | |
| 38 'function': f, | |
| 39 }) | |
| 40 | |
| 41 | |
| 42 class Filter: | |
| 43 """ | |
| 44 Default filter. Subclass this class or use the `simplefilter` | |
| 45 decorator to create own filters. | |
| 46 """ | |
| 47 | |
| 48 def __init__(self, **options): | |
| 49 self.options = options | |
| 50 | |
| 51 def filter(self, lexer, stream): | |
| 52 raise NotImplementedError() | |
| 53 | |
| 54 | |
| 55 class FunctionFilter(Filter): | |
| 56 """ | |
| 57 Abstract class used by `simplefilter` to create simple | |
| 58 function filters on the fly. The `simplefilter` decorator | |
| 59 automatically creates subclasses of this class for | |
| 60 functions passed to it. | |
| 61 """ | |
| 62 function = None | |
| 63 | |
| 64 def __init__(self, **options): | |
| 65 if not hasattr(self, 'function'): | |
| 66 raise TypeError('%r used without bound function' % | |
| 67 self.__class__.__name__) | |
| 68 Filter.__init__(self, **options) | |
| 69 | |
| 70 def filter(self, lexer, stream): | |
| 71 # pylint: disable=not-callable | |
| 72 yield from self.function(lexer, stream, self.options) |
