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0549bfb1e5
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Matthew Flatt 0549bfb1e5 rewrite number parser 
Inspired by the way the Chez Scheme number parser works, change the
one in the expander to be faster and probably clearer. This improved
performance brings number parsing almost back in line with the v6.12
parser's performance.

The revised parser is faster because it goes through an input string
just once. The new parser is also more xcomplete; it doesn't rely on a
host-system `number->string` (except for dummy extflonums when
extflonums are not supported).

If you're reading the commit history, beware that the note on commit
be19996953 is incorrect about the change to parsing divide-by-zero
errors. (It explains a change that was edited away before merging.)
This commit really does change the bahvior, though, again as a better
match for v6.12. Specifically, "/0" (with no hashes) always triggers
divide-by-zero in an otherwise well-formed number, even if `#i` is
used.
2019-02-23 17:25:54 -07:00
.github/ISSUE_TEMPLATE_DRAFT Don't set this up quite yet. 2018-11-29 21:49:16 -05:00
pkgs rewrite number parser 2019-02-23 17:25:54 -07:00
racket rewrite number parser 2019-02-23 17:25:54 -07:00
.gitattributes Don't include git files in archives. 2010-05-12 01:46:05 -04:00
.gitignore Additional files to ignore. 2018-11-21 12:39:56 -05:00
.gitlab-ci.yml Mark cs tests as allowing failure for Gitlab 2019-02-22 11:35:33 -07:00
.mailmap mailmap updates & fixes. 2013-04-03 18:10:22 -04:00
.travis.yml Build cs variant on Travis, but allow failure. 2018-12-02 20:16:05 -05:00
appveyor.yml use VS 2013 on AppVeyor 2018-05-15 11:07:06 -06:00
azure-pipelines.yml Add mac tests on Azure. 2018-09-15 12:43:54 -04:00
INSTALL.txt makefile: add a both target 2019-01-20 10:34:30 -07:00
Makefile makefile: adjust in-place CGC/3m install to preserve CS install 2019-01-31 15:04:27 -07:00
README.md reorganize and update "README.txt"s about sources and builds 2018-11-16 07:49:53 -07:00

README.md

This is the source code for the core of Racket. See "INSTALL.txt" for full information on building Racket.

To build the full Racket distribution from this repository, run make in the top-level directory. To build minimal Racket, run make base.

The rest of the Racket distribution source code is in other repositories, mostly under the Racket GitHub organization.

Contribute to Racket by submitting a pull request, joining the development mailing list, or visiting the IRC channel.

License

Racket is distributed under the GNU Lesser General Public License (LGPL). This implies that you may link Racket into proprietary applications, provided you follow the rules stated in the LGPL. You can also modify Racket; if you distribute a modified version, you must distribute it under the terms of the LGPL, which in particular states that you must release the source code for the modified software.

See racket/src/COPYING_LESSER.txt for more information.