How do I compile Pyparsing with Cython on WIndows?

Question 1

Sir, I did as you've said but there was still a compile time warning:

    python setup.py build_ext --inplace
    running build_ext
    cythoning pyparsing.pyx to pyparsing.c
    warning: pyparsing.pyx:413:8: Unreachable code
    building 'pyparsing' extension
    creating build
    creating build\temp.win32-2.7
    creating build\temp.win32-2.7\Release
    C:\Program Files\Microsoft Visual Studio 9.0\VC\BIN\cl.exe /c /nologo /Ox /MD /W
    3 /GS- /DNDEBUG -IC:\Python27\include -IC:\Python27\PC /Tcpyparsing.c /Fobuild\t
    emp.win32-2.7\Release\pyparsing.obj
    pyparsing.c
    C:\Program Files\Microsoft Visual Studio 9.0\VC\BIN\link.exe /DLL /nologo /INCRE
    MENTAL:NO /LIBPATH:C:\Python27\libs /LIBPATH:C:\Python27\PCbuild /EXPORT:initpyp
    arsing build\temp.win32-2.7\Release\pyparsing.obj /OUT:C:\Users\iProsper\Desktop
    \pyparsing\pyparsing.pyd /IMPLIB:build\temp.win32-2.7\Release\pyparsing.lib /MAN
    IFESTFILE:build\temp.win32-2.7\Release\pyparsing.pyd.manifest
       Creating library build\temp.win32-2.7\Release\pyparsing.lib and object build\
    temp.win32-2.7\Release\pyparsing.exp
    C:\Program Files\Microsoft SDKs\Windows\v6.0A\bin\mt.exe -nologo -manifest build
    \temp.win32-2.7\Release\pyparsing.pyd.manifest -outputresource:C:\Users\iProsper
    \Desktop\pyparsing\pyparsing.pyd;2

The warning is actually in the line 4: warning: pyparsing.pyx:413:8: Unreachable code. I then changed the line to read as:

    def __getattr__( self, name ):
            if True: #name not in self.__slots__:
                if name in self.__tokdict:
                    if name not in self.__accumNames:
                        return self.__tokdict[name][-1][0]
                    else:
                        return ParseResults([ v[0] for v in self.__tokdict[name] ])
                else:
                    return ""
            else:
                return None

and then recompiled it. One thing I noticed is that even with the warning and the edit I made, both of them compiled successfully but when when I tried to test it with the following code:

    from pyparsing import Word, alphas
    greet = Word(alphas) + ',' + Word(alphas) + '!'
    greeting = greet.parseString('Hello, World!')
    print greeting

I got the following error:

    Traceback (most recent call last):
      File "C:\nwaomachux\build_pyparsing\checkout.py", line 1, in 
        from pyparsing import Word, alphas
      File "pyparsing.pyx", line 3414, in init pyparsing (pyparsing.c:100064)
    AttributeError: 'builtin_function_or_method' object has no attribute 'ANY_VALUE'

I would have altered the file further and sent it to you to check it out but I'm only some few hours old with Pyparsing, so I've yet to get a grasp of the full source code.

I wouldn't know what the effect(s) of moving withAttribute.ANY_VALUE = object() to the beginning of def withAttribute(args,*attrDict): function signify. Please, what's the fix to it? Thanks.

Question 2

I suspect the problem is the use of 'include' as a named parameter, since include is a reserved C keyword. Try editing this __init__ routine to:

def __init__( self, other, include_=False, ignore=None, failOn=None ):
    super( SkipTo, self ).__init__( other )
    self.ignoreExpr = ignore
    self.mayReturnEmpty = True
    self.mayIndexError = False
    self.includeMatch = include_
    self.asList = False
    if failOn is not None and isinstance(failOn, basestring):
        self.failOn = Literal(failOn)
    else:
        self.failOn = failOn
    self.errmsg = "No match found for "+_ustr(self.expr)

That is, just add a '_' to the parameter name, in the parameter list and in the one line that references it. This will make your Cython-compiled pyparsing slightly variant from the standard release, but I've not seen heavy use of this parameter.

Good luck, please post to the pyparsing wiki Home page discussion your Cython-izing experience, and any info on how this may have sped up your pyparsing process.