On Fri, Feb 27, 2009 at 1:19 PM, Jacob Hallén <[email protected]> wrote: > Andrew Dalke, who is very thorough in his investigation of software, has > written som interesting things about his experience with ANTLR as well as > some other parsing projects. In short, he likes ANTLR as a tool, but in his > application, it is considerably slower than some other alternatives. > He also has something called python4ply, which is a ready, MIT licensed > parser for Python. > > You can find his articles on > http://www.dalkescientific.com/writings/diary/archive/ I see the part you are likely talking about:
""" It looks like every character read incurs several Python function calls, which are a lot more expensive in Python than in Java or C++. There's no easy change for this, so I'm pretty sure the ANTLR-generated parser always going to be slower than PLY. """ I wonder if producing a parser in C would work for PyPy if this is unavoidable? I know it misses the purpose of PyPy a bit -- just a thought :) -Frank _______________________________________________ [email protected] http://codespeak.net/mailman/listinfo/pypy-dev
