Brian C. Lum wrote:
Dear Pypy developers:
I have gone through the source code for the FlowObjSpace in
pypy.objspace.flow.objspace, but I am confused how to traverse through
the blocks or obtain the information for each blocks in the graph. From
my understanding:
space = FlowObjSpace()
graph = space.build_flow(func)
Once you have the graph, however, how do you know what instructions are
in each block? I can iterate through the graph with iterblocks, but how
do I get information from each block?
I want to analyze the information in each block to do code analysis for
python. Can anyone help me with this?
First of all, flowing doesn't work for full CPython. You need
to use the RPython subset (see
http://codespeak.net/pypy/dist/pypy/doc/coding-guide.html#restricted-python
)
Then, if you have a block, you can iterate over block.operations
which is a list, and so on. See pypy/objspace/flow/model.py
ciao - chris
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