52 lines
1.9 KiB
Python
52 lines
1.9 KiB
Python
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import color, mode, tab
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from lex import Grammar, PatternRule, RegionRule
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from mode.c import C, CGrammar, CTabber2
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_rules = list(CGrammar.rules)
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_rules.insert(0, PatternRule(r"yacc_directive", r"^%[a-zA-Z_]+"))
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_rules.insert(1, PatternRule(r"yacc_section", r"%%"))
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_rules.insert(2, PatternRule(r"yacc_delimiter", r"%{|%}"))
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_rules.insert(3, PatternRule(r"yacc_production", r"^[a-z_]+:"))
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_rules.insert(4, PatternRule(r"yacc_var", r"\$[0-9\$]"))
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_rules.insert(5, PatternRule(r"yacc_empty", r"^ +\n$"))
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class TrueDict(dict):
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def __contains__(self, k): return True
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def __getitem__(self, k): return True
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def __setitem__(self, k): pass
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def __delitem__(self, k): raise Exception, 'not possible'
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def __len__(self): return 1
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def __repr__(self): return '<TrueDict()>'
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def get(self, k): return True
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class YaccGrammar(CGrammar):
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rules = _rules
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class YaccTabber(CTabber2):
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open_tokens = {'delimiter': {'{': '}', '(': ')', '[': ']'},
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'yacc_delimiter': {'%{': '%}'}}
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close_tokens = {'delimiter': {'}': '{', ')': '(', ']': '['},
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'yacc_delimiter': {'%}': '%{'}}
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control_tokens = {'yacc_production': TrueDict()}
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scope_tokens = {}
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end_at_eof = False
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end_at_tokens = {'yacc_empty': TrueDict()}
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nocontinue_tokens = {}
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start_free_tokens = {'string.start': 'string.end'}
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end_free_tokens = {'string.end': 'string.start'}
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class Yacc(mode.Fundamental):
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modename = 'yacc'
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extensions = ['.y']
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grammar = YaccGrammar
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tabbercls = YaccTabber
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colors = {
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'yacc_directive': ('yellow', 'default', 'bold'),
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'yacc_section': ('yellow', 'default', 'bold'),
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'yacc_delimiter': ('yellow', 'default', 'bold'),
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'yacc_production': ('yellow', 'default', 'bold'),
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'yacc_var': ('yellow', 'default', 'bold'),
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}
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install = Yacc.install
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