PyDoc_STRVAR error in msvc compile
Robin Becker
robin at reportlab.com
Wed Oct 2 07:28:31 EDT 2013
On 02/10/2013 11:49, Dave Angel wrote:
>> conditional string or "" then MSVC 9 seems to be ok with it.
>> >
> MSVC and other compilers do not not see eye to eye on the preprocessor
> semantics. I no longer use MSVC so I can't experiment. I can only try
> to recall extensive manipulation two decades ago.
>
> I believe it does the logic of "backslash at the end of line" first. So
> if there are any spaces or tabs after those backslashes (which might
> have been lost when you pasted it here), fix them first.
>
> Then I think it looks for macro definitions, where the # must be the
> first non-whitespace of the line. Then it expands such macros, and I
> think MSVC is unusual in that it expands them multiple times, so a macro
> expansion can result in another macro invocation.
>
> I'm not sure where quotes fit in here.
>
> Your original message code doesn't match the expansion you show with -E,
> so i suspect your "..." eliding hid something significant.
The actual is this code from _renderPM.c
https://bitbucket.org/rptlab/reportlab/src/fa65fe72b6c2aaecb7747bf14884adb996d8e87f/src/rl_addons/renderPM/_renderPM.c?at=default
PyDoc_STRVAR(__DOC__,
"Helper extension module for renderPM.\n\
\n\
Interface summary:\n\
\n\
import _renderPM\n\
gstate(width,height[,depth=3,bg=0xffffff]) #create an initialised
graphics state\n\
makeT1Font(fontName,pfbPath,names[,reader]) #make a T1 font\n\
delCache() #delete all T1 font info\n\
pil2pict(cols,rows,datastr,palette) hreturn PICT version of im as bytes\n"
#ifdef RENDERPM_FT
" ft_get_face(fontName) --> ft_face instance\n"
#endif
"\n\
_libart_version # base library version string\n\
_version # module version string\n\
");
when I run that through the pre-processor I get (all on a single line)
static char __DOC__[] = "Helper extension module for renderPM.\n\nInterface
summary:\n\n import _renderPM\n gstate(width,height[,depth=3,bg=0xffffff])
#create an initialised graphics state\n
makeT1Font(fontName,pfbPath,names[,reader]) #make a T1 font\n delCache() #delete
all T1 font info\n pil2pict(cols,rows,datastr,palette) hreturn PICT version of
im as bytes\n" #ifdef 1 " ft_get_face(fontName) --> ft_face instance\n"
#endif "\n _libart_version # base library version string\n _version # module
version string\n";
I tried a couple of variations of \ at the end of the line preceding #ifdef etc
etc, but nothing seemed to work. The source is properly DOS formatted (according
to vim) so it's not a simple line ending issue and I don't have any extra spaces
at the end of the lines etc etc.
--
Robin Becker
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