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16 lines
368 B
Python
16 lines
368 B
Python
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import PyLR
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def _intfunc(m):
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return int(m.group(0))
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class MathLexer(PyLR.Lexer):
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def __init__(self):
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PyLR.Lexer.__init__(self)
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self.addpat(r"([1-9]([0-9]+)?)|0", "INT", _intfunc)
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self.addpat(r"\+", "PLUS")
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self.addpat(r"\*","TIMES")
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self.addpat(r"\(", "LPAR")
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self.addpat(r"\)", "RPAR")
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self.addpat(r"\s+", "WS", None, 1)
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