Re: Source code generation using Python
On Sat, 6 Dec 2008 13:47:26 -0800 (PST), ats [EMAIL PROTECTED] wrote:
Hello,
This is my first posting to a Python group (and I'm starting with
Python seriously only now) , so bear with me if I make some mistakes.
I want to generate 3 different versions of a C++ source code,
basically injecting different flavours of inline assembler depending
on target compiler/CPU.
Code generation should be integrated into a 'master source file' which
is the processed and generates the right code for GCC / MSVC or other
cases. Something like:
int FastAdd( int t1, int t2 ){
int r;
##if USE_INLINE_ASM
#ARG( eax, t1)
#ARG( ebx, t2)
#ASM( add, ebx, eax )
#RES( eax, r )
##else
r = t1+t2;
##endif
return r;
}
You didn't say explicitly, so I have to ask: is there a reason you
cannot use the C++ preprocessor? It does exactly what you describe,
and would be the least surprising solution to the readers.
/Jorgen
--
// Jorgen Grahn grahn@Ph'nglui mglw'nafh Cthulhu
\X/ snipabacken.se R'lyeh wgah'nagl fhtagn!
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Re: Source code generation using Python
Any suggestions? I've happily used Cheetah with Leo (http://webpages.charter.net/ edreamleo/front.html) to organise and script my code generation needs, but you may also be happy with cog (http://nedbatchelder.com/code/ cog/). AK -- http://mail.python.org/mailman/listinfo/python-list
Re: Source code generation using Python
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 ats wrote: I want to generate 3 different versions of a C++ source code, basically injecting different flavours of inline assembler depending on target compiler/CPU. Are you aware that there are also packages that let you generate and call C code from Python on the fly? I find it most productive to write my code in all Python first and to also develop a comprehensive test suite. Then profile and replace selected portions with lower level C code with the tests being able to confirm your code is correct. Here are some packages that take an alternate approach: http://www.cs.tut.fi/~ask/cinpy/ http://code.google.com/p/shedskin/ http://pyinline.sourceforge.net/ http://scipy.org/Weave http://mdevan.nfshost.com/llvm-py/ I like LLVM the most. Roger -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.9 (GNU/Linux) iEYEARECAAYFAkk8MkUACgkQmOOfHg372QRhsgCcCUzWHAHmjC1490yYba7c9Xrt DxMAnj/Ur2GoJkQgMrx65hYEqPwKLdVV =CvGB -END PGP SIGNATURE- -- http://mail.python.org/mailman/listinfo/python-list
Source code generation using Python
Hello,
This is my first posting to a Python group (and I'm starting with
Python seriously only now) , so bear with me if I make some mistakes.
I want to generate 3 different versions of a C++ source code,
basically injecting different flavours of inline assembler depending
on target compiler/CPU.
Code generation should be integrated into a 'master source file' which
is the processed and generates the right code for GCC / MSVC or other
cases. Something like:
int FastAdd( int t1, int t2 ){
int r;
##if USE_INLINE_ASM
#ARG( eax, t1)
#ARG( ebx, t2)
#ASM( add, ebx, eax )
#RES( eax, r )
##else
r = t1+t2;
##endif
return r;
}
On processing, given constant USE_INLINE_ASM (or not) the right code
is generated to a target file, which goes into the build process.
I was looking for packages that can do this and came up with some
candidates:
- empy - http://www.alcyone.com/pyos/empy/ - It looks like it could
do the job, but appears non-maintained since 2003.
- Cheetah - Looks like more of a tool to do fix replacements of code
snippets.
There is some logic going on in the ARG, ASM and RES sections,
so I need to link code generation with true Python functions.
The situation is really quite similar to HTML/PHP except, here we
would have C++/Python.
Any suggestions?
Thanks,
//Arne S.
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Re: Source code generation using Python
On Dec 6, 2008, at 4:47 PM, ats wrote:
Hello,
This is my first posting to a Python group (and I'm starting with
Python seriously only now) , so bear with me if I make some mistakes.
I want to generate 3 different versions of a C++ source code,
basically injecting different flavours of inline assembler depending
on target compiler/CPU.
Code generation should be integrated into a 'master source file' which
is the processed and generates the right code for GCC / MSVC or other
cases. Something like:
int FastAdd( int t1, int t2 ){
int r;
##if USE_INLINE_ASM
#ARG( eax, t1)
#ARG( ebx, t2)
#ASM( add, ebx, eax )
#RES( eax, r )
##else
r = t1+t2;
##endif
return r;
}
On processing, given constant USE_INLINE_ASM (or not) the right code
is generated to a target file, which goes into the build process.
I was looking for packages that can do this and came up with some
candidates:
- empy - http://www.alcyone.com/pyos/empy/ - It looks like it could
do the job, but appears non-maintained since 2003.
- Cheetah - Looks like more of a tool to do fix replacements of code
snippets.
There is some logic going on in the ARG, ASM and RES sections,
so I need to link code generation with true Python functions.
Hi Arne,
There are *lots* of packages for Python that replace chunks of
predefined templates. Most are HTML-focused, some more so than others.
I've used Mako (http://www.makotemplates.org/) to generate both HTML
and Apache config files. It could certainly do C++. Some alternatives
to Mako are mentioned in the documentation -- Kid, Genshi and Cheetah.
Rather than invite a flame war as to which is a better templating
engine, I'll just say that I'm happy with how Mako addresses *my*
needs. =) Good luck finding something that addresses yours.
Cheers
Philip
The situation is really quite similar to HTML/PHP except, here we
would have C++/Python.
Any suggestions?
Thanks,
//Arne S.
--
http://mail.python.org/mailman/listinfo/python-list
--
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Re: Source code generation using Python
On Dec 6, 11:19 pm, Philip Semanchuk [EMAIL PROTECTED] wrote:
On Dec 6, 2008, at 4:47 PM, ats wrote:
Hello,
This is my first posting to a Python group (and I'm starting with
Python seriously only now) , so bear with me if I make some mistakes.
I want to generate 3 different versions of a C++ source code,
basically injecting different flavours of inline assembler depending
on target compiler/CPU.
Code generation should be integrated into a 'master source file' which
is the processed and generates the right code for GCC / MSVC or other
cases. Something like:
int FastAdd( int t1, int t2 ){
int r;
##if USE_INLINE_ASM
#ARG( eax, t1)
#ARG( ebx, t2)
#ASM( add, ebx, eax )
#RES( eax, r )
##else
r = t1+t2;
##endif
return r;
}
On processing, given constant USE_INLINE_ASM (or not) the right code
is generated to a target file, which goes into the build process.
I was looking for packages that can do this and came up with some
candidates:
- empy -http://www.alcyone.com/pyos/empy/- It looks like it could
do the job, but appears non-maintained since 2003.
- Cheetah - Looks like more of a tool to do fix replacements of code
snippets.
There is some logic going on in the ARG, ASM and RES sections,
so I need to link code generation with true Python functions.
Hi Arne,
There are *lots* of packages for Python that replace chunks of
predefined templates. Most are HTML-focused, some more so than others.
I've used Mako (http://www.makotemplates.org/) to generate both HTML
and Apache config files. It could certainly do C++. Some alternatives
to Mako are mentioned in the documentation -- Kid, Genshi and Cheetah.
Rather than invite a flame war as to which is a better templating
engine, I'll just say that I'm happy with how Mako addresses *my*
needs. =) Good luck finding something that addresses yours.
Cheers
Philip
The situation is really quite similar to HTML/PHP except, here we
would have C++/Python.
Any suggestions?
Thanks,
//Arne S.
--
http://mail.python.org/mailman/listinfo/python-list
Thanks, Mako looks neat.
Regards
// Arne S.
--
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