forked from ScoDoc/ScoDoc
77 lines
2.7 KiB
Python
Executable File
77 lines
2.7 KiB
Python
Executable File
#!/usr/bin/env python
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# -*- coding: windows-1251 -*-
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# Copyright (C) 2005 Roman V. Kiseliov
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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#
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# 3. All advertising materials mentioning features or use of this
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# software must display the following acknowledgment:
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# "This product includes software developed by
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# Roman V. Kiseliov <roman@kiseliov.ru>."
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#
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# 4. Redistributions of any form whatsoever must retain the following
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# acknowledgment:
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# "This product includes software developed by
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# Roman V. Kiseliov <roman@kiseliov.ru>."
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#
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# THIS SOFTWARE IS PROVIDED BY Roman V. Kiseliov ``AS IS'' AND ANY
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# EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL Roman V. Kiseliov OR
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# ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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# OF THE POSSIBILITY OF SUCH DAMAGE.
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__rev_id__ = """$Id: ExcelFormula.py,v 1.3 2005/08/11 08:53:48 rvk Exp $"""
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import ExcelFormulaParser, ExcelFormulaLexer
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import struct
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from antlr import ANTLRException
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class Formula(object):
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__slots__ = ["__init__", "text", "rpn", "__s", "__parser"]
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def __init__(self, s):
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try:
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self.__s = s
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lexer = ExcelFormulaLexer.Lexer(s)
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self.__parser = ExcelFormulaParser.Parser(lexer)
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self.__parser.formula()
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except ANTLRException:
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raise Exception, "can't parse formula " + s
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def text(self):
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return self.__s
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def rpn(self):
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'''
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Offset Size Contents
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0 2 Size of the following formula data (sz)
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2 sz Formula data (RPN token array)
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[2+sz] var. (optional) Additional data for specific tokens
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'''
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return struct.pack("<H", len(self.__parser.rpn)) + self.__parser.rpn
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