| commit | 6781ab30c54efdb29d41e45bc20cc2eec0124f66 | |
| author | Jiří Techet <techet@gmail.com> | |
| Thu, 25 Jun 2015 20:10:32 +0000 (25 22:10 +0200) | ||
| committer | Jiří Techet <techet@gmail.com> | |
| Thu, 25 Jun 2015 20:10:32 +0000 (25 22:10 +0200) | ||
| tree | 50361a598282c27a8db3fb185256a3d02bca8bc6 | treesnapshot (tar.gz zip) |
| parent | f427a3a6e19fe8c7190b0f8a1c269f3e739fbfb3 | commitdiff |
python: optimize skipEverything()
Most of the time there's no start of a string which means all the 10
strcmp()s are done for every character of the input. This is very expensive:
before this patch this function alone takes 55% of the parser time.
When comparing by character (and avoiding further comparison if the first
character doesn't match), this function takes only 11% of the parser time
so the performance of the parser nearly doubles.
In addition check for the "rb" prefix which is possible in Python 3.
Ported from universal-ctags.
Most of the time there's no start of a string which means all the 10
strcmp()s are done for every character of the input. This is very expensive:
before this patch this function alone takes 55% of the parser time.
When comparing by character (and avoiding further comparison if the first
character doesn't match), this function takes only 11% of the parser time
so the performance of the parser nearly doubles.
In addition check for the "rb" prefix which is possible in Python 3.
Ported from universal-ctags.
| tagmanager/ctags/python.c | diffblobblamehistory |