[Webkit-unassigned] [Bug 44104] Refactor number parsing in the lexer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=44104





--- Comment #6 from Zoltan Herczeg <zherczeg at webkit.org>  2010-08-19 01:16:44 PST ---
> Seems a shame we have to do this just in case of the overflow. It would be nice to find a way to skip this in the fast path.

The way is found, but the introduced complexity is not necessary worth the efforts.

Now the parsing is slightly faster:

TEST                           COMPARISON            FROM                 TO             DETAILS

=============================================================================

** TOTAL **:                   1.028x as fast    33.3ms +/- 2.0%   32.4ms +/- 1.1%     significant

=============================================================================

  jquery:                      -                  5.2ms +/- 5.8%    5.0ms +/- 0.0%
    1.3.2:                     -                  5.2ms +/- 5.8%    5.0ms +/- 0.0%

  mootools:                    -                  5.6ms +/- 6.6%    5.3ms +/- 6.5%
    1.2.2-core-nc:             -                  5.6ms +/- 6.6%    5.3ms +/- 6.5%

  prototype:                   -                  6.2ms +/- 4.9%    6.1ms +/- 3.7%
    1.6.0.3:                   -                  6.2ms +/- 4.9%    6.1ms +/- 3.7%

  concat:                      -                 16.3ms +/- 2.1%   16.0ms +/- 0.0%
    jquery-mootools-prototype: -                 16.3ms +/- 2.1%   16.0ms +/- 0.0%

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