Package lepl :: Package regexp :: Module str :: Class StrAlphabet

Class StrAlphabet

Support for alphabets.

Instance Methods

__init__(self, min_, max_, escape='\\', escaped=ILLEGAL, illegal=ILLEGAL, range=None, parser_factory=make_str_parser)
x.__init__(...) initializes x; see help(type(x)) for signature

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escape(self)

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escaped(self)

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illegal(self)

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range(self)

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_escape_char(self, char)
Escape a character if necessary.

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_no_parens(self, children)
Returns True of no parens are needed around this when fmtting.

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fmt_intervals(self, intervals)
Hide unicode chars because of some strange error that occurs with Python2.6 on the command line.

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fmt_sequence(self, children)
Generate a string representation of a sequence.

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fmt_repeat(self, children)
Generate a string representation of a repetition.

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fmt_choice(self, children)
Generate a string representation of a choice.

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fmt_option(self, children)
Generate a string representation of an option.

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fmt_label(self, label, child)
Generate a string representation of labelled options.

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join(self, chars)
Join characters together.

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from_char(self, char)
This must convert a single character.

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parse(self, regexp)
Generate a Sequence from the given text.

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Inherited from core.Alphabet: after, before, extension, invert, max, min

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, min_, max_, escape='\\', escaped=ILLEGAL, illegal=ILLEGAL, range=None, parser_factory=make_str_parser)
(Constructor)

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x.__init__(...) initializes x; see help(type(x)) for signature

Overrides: object.__init__: (inherited documentation)

escape(self)

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Decorators:

@property

escaped(self)

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Decorators:

@property

illegal(self)

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Decorators:

@property

range(self)

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Decorators:

@property

fmt_intervals(self, intervals)

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Hide unicode chars because of some strange error that occurs with Python2.6 on the command line.

This is in StrAlphabet, but for ASCII makes no difference. Having it here helps LineAwareAlphabet work (the whole idea of subclassing alphabets etc is not so great).