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pygments.lexers.grammar_notation
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Lexers for grammar notations like BNF.
:copyright: Copyright 2006-2023 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
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This lexer is for grammar notations which are similar to
original BNF.
In order to maximize a number of targets of this lexer,
let's decide some designs:
* We don't distinguish `Terminal Symbol`.
* We do assume that `NonTerminal Symbol` are always enclosed
with arrow brackets.
* We do assume that `NonTerminal Symbol` may include
any printable characters except arrow brackets and ASCII 0x20.
This assumption is for `RBNF <http://www.rfc-base.org/txt/rfc-5511.txt>`_.
* We do assume that target notation doesn't support comment.
* We don't distinguish any operators and punctuation except
`::=`.
Though these decision making might cause too minimal highlighting
and you might be disappointed, but it is reasonable for us.
.. versionadded:: 2.1
�BNF�bnfz*.bnfz
text/x-bnf�rootz(<)([ -;=?-~]+)(>)z::=z[^<>:]+�.N)�__name__�
__module__� __qualname__�__doc__�name�aliases� filenames� mimetypesr r r �Classr r �tokens� � �B/usr/lib/python3/dist-packages/pygments/lexers/grammar_notation.pyr r sg � ��6 �D��g�G�� �I� ��I� �
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Lexer for IETF 7405 ABNF.
(Updates `5234 <http://www.ietf.org/rfc/rfc5234.txt>`_) grammars.
.. versionadded:: 2.1
�ABNFz#http://www.ietf.org/rfc/rfc7405.txt�abnfz*.abnfz text/x-abnf)�ALPHA�BIT�CHAR�CR�CRLF�CTL�DIGIT�DQUOTE�HEXDIG�HTAB�LF�LWSP�OCTET�SP�VCHAR�WSPr z;.*$z(%[si])?"[^"]*"z%b[01]+\-[01]+\bz%b[01]+(\.[01]+)*\bz%d[0-9]+\-[0-9]+\bz%d[0-9]+(\.[0-9]+)*\bz %x[0-9a-fA-F]+\-[0-9a-fA-F]+\bz!%x[0-9a-fA-F]+(\.[0-9a-fA-F]+)*\bz\b[0-9]+\*[0-9]+z
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For JSpeech Grammar Format grammars.
.. versionadded:: 2.2
�JSGFzhttps://www.w3.org/TR/jsgf/�jsgfz*.jsgf)zapplication/jsgfzapplication/x-jsgfz text/jsgf�comments� non-commentsz
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This lexer is for Parsing Expression Grammars (PEG).
Various implementations of PEG have made different decisions
regarding the syntax, so let's try to be accommodating:
* `<-`, `←`, `:`, and `=` are all accepted as rule operators.
* Both `|` and `/` are choice operators.
* `^`, `↑`, and `~` are cut operators.
* A single `a-z` character immediately before a string, or
multiple `a-z` characters following a string, are part of the
string (e.g., `r"..."` or `"..."ilmsuxa`).
.. versionadded:: 2.6
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