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Correct info on parser

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rocky
2016-05-15 19:44:18 -04:00
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@@ -109,15 +109,20 @@ Hartmut a decade an a half ago:
NB. This is not a masterpiece of software, but became more like a hack. NB. This is not a masterpiece of software, but became more like a hack.
Probably a complete rewrite would be sensefull. hG/2000-12-27 Probably a complete rewrite would be sensefull. hG/2000-12-27
This project deparses using a LR parse. However another approach is to This project deparses using a Early-algorithm parse with lots of
do something like simulate execution symbolically and build expression massaging of tokens and the grammar in the scanner
trees off of stack results. The two important projects that work this phase. Early-algorithm parsers are context free and tend to be linear
way are [unpyc3](https://code.google.com/p/unpyc3/) and most if the grammar is LR or left recursive.
especially [pycdc](https://github.com/zrax/pycdc) The latter project
is largely by Michael Hansen and Darryl Pogue. If they supported Another approach that doesn't use grammars is to do something like
getting source-code fragments and I could call it from Python, I'd simulate execution symbolically and build expression trees off of
probably ditch this and use that. From what I've seen, the code runs stack results. The two important projects that work this way are
blindingly fast and spans all versions of Python. [unpyc3](https://code.google.com/p/unpyc3/) and most especially
[pycdc](https://github.com/zrax/pycdc) The latter project is largely
by Michael Hansen and Darryl Pogue. If they supported getting
source-code fragments and I could call it from Python, I'd probably
ditch this and use that. From what I've seen, the code runs blindingly
fast and spans all versions of Python.
Tests for the project have been, or are being, culled from all of the Tests for the project have been, or are being, culled from all of the
projects mentioned. projects mentioned.