36 lines
1.3 KiB
Python
36 lines
1.3 KiB
Python
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from mode import Fundamental
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from lex import Grammar, PatternRule, RegionRule, PatternMatchRule
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from mode.python import StringGrammar1, StringGrammar2, StringGrammar3, StringGrammar4
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class CommentGrammar(Grammar):
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rules = [PatternRule('data', r'(?:[^\*]|\*(?!\)))+')]
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class SequenceGrammar(Grammar):
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rules = [PatternRule('data', r'(?:\\.|[^?])+')]
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class EbnfGrammar(Grammar):
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rules = [
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PatternRule('spaces', ' +'),
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PatternRule('eol', r'\n'),
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RegionRule('string', "'", StringGrammar1, "'"),
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RegionRule('string', '"', StringGrammar2, '"'),
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RegionRule('ebnf_sequence', r'\?', SequenceGrammar, r'\?'),
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RegionRule('comment', r'\(\*', CommentGrammar, r'\*\)'),
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PatternRule('delimiter', '[=,;|\[\]{}\(\)-]'),
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PatternRule('ebnf_nonterminal', r'[a-zA-Z_][-a-zA-Z0-9_ ]*[a-zA-Z0-9_]'),
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PatternRule('ebnf_nonterminal', r'[a-zA-Z_]'),
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]
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class Ebnf(Fundamental):
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name = 'ebnf'
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extensions = ['.ebnf']
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grammar = EbnfGrammar
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colors = {
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'ebnf_sequence.start': ('magenta', 'default', 'bold'),
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'ebnf_sequence.data': ('magenta', 'default', 'bold'),
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'ebnf_sequence.null': ('magenta', 'default', 'bold'),
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'ebnf_sequence.end': ('magenta', 'default', 'bold'),
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'ebnf_nonterminal': ('cyan', 'default', 'bold'),
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}
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install = Ebnf.install
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