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16 lines
390 B
Python
16 lines
390 B
Python
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import Lexer, re, string
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def idfunc(m):
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return int(m.group(0))
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class mathlex(Lexer.Lexer):
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def __init__(self):
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Lexer.Lexer.__init__(self)
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self.addpat(r"([1-9]([0-9]+)?)|0", "ID", idfunc)
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self.addpat(r"\+", "PLUS")
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self.addpat(r"\*","TIMES")
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self.addpat(r"\(", "LPAREN")
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self.addpat(r"\)", "RPAREN")
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self.addpat(r"\s+", "", None, Lexer.SKIPTOK)
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