36 lines
1.6 KiB
Python
36 lines
1.6 KiB
Python
from mode import Fundamental
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from lex import Grammar, PatternRule, RegionRule, NocasePatternRule, NocaseRegionRule
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class DataGrammar(Grammar):
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rules = [PatternRule(r'data', r'[^)]+')]
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class ForthGrammar(Grammar):
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rules = [
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PatternRule(r'comment', r"\\.*$"),
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RegionRule(r'comment', r'\(', DataGrammar, r'\)'),
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NocaseRegionRule(r'comment', r'0 \[if\]', DataGrammar, r'\[(?:endif|then)\]'),
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PatternRule(r'delimiter', r"[:;\[\]]"),
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NocasePatternRule(r'keyword', r'(?:variable|value|until|tuck|truth|to|then|test|swap|step|see|rot|roll|recurse|r>|pick|over|mod|m\*|loop|locals|invert|if|hex|here|fsort|fln|fexp|f!|f@|f\+|f-|f\*|f/|execute|endif|else|dup|drop|does>|do|decimal|d!|d@|create|constant|cells|cell|c!|c@|bye|begin|allot|\[(?:if|then|endif)\]|>r|!|@|\+loop|\+|-|\*/mod|\*/|\*|/mod|/)(?=[ \n])'),
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PatternRule(r'forth_def', r'(?<=:) +[^ ]+'),
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NocasePatternRule(r'number', r"'[a-z]"),
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NocasePatternRule(r'number', r'%?-?[0-1]+\.?'),
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NocasePatternRule(r'number', r'[&#]?-?[0-9]+\.?'),
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NocasePatternRule(r'number', r"(?:0x|\$)[0-9a-f]+\.?"),
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NocasePatternRule(r'number', r'[+-]?[0-9]+\.?e?[+-][0-9]+'),
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PatternRule(r'forth_word', r'[^ ]+'),
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PatternRule(r'spaces', r' +'),
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PatternRule(r'eol', r'\n'),
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]
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class Forth(Fundamental):
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modename = 'FORTH'
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extensions = ['.fs']
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grammar = ForthGrammar
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commentc = '\\'
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colors = {
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'forth_def': ('blue', 'default', 'bold'),
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'forth_word': ('yellow', 'default', 'bold'),
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}
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install = Forth.install
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