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Matthew Flatt 1ac6c15207 add #:unsafe option for #%declare 
Finally give in and add an option to compile a module as unsafe. This
was going to be easy, since the option already exists at the linklet
level, but it turns out that a lot of plumbing was needed to propagate
the argument, and even more to preserve unsafety with cross-module
inlining.

Macros can effectively conditoinalize their expansion in unsafe mode
by generating the pattern

 (if (variable-reference-from-unsafe? (#%variable-reference))
     <unsafe variant>
     <safe variant>)

The compiler will only keep one of the two variants, because it
promises to optimize `(variable-reference-from-unsafe?
(#%variable-reference))` to a literal boolean. The expander will still
expand both variants, however, so avoid putting code in both variants
that itself can have safety variants.
2020-11-10 10:36:03 -07:00
.github Fix workflow syntax 2020-11-09 13:44:04 +01:00
pkgs add #:unsafe option for #%declare 2020-11-10 10:36:03 -07:00
racket add #:unsafe option for #%declare 2020-11-10 10:36:03 -07:00
.gitattributes Don't include git files in archives. 2010-05-12 01:46:05 -04:00
.gitignore Fix typo. 2019-06-21 12:32:37 -05:00
.lgtm.yml Fetch PB to start LGTM build 2020-08-07 12:17:17 +02:00
.mailmap Minor metadata changes. 2019-10-15 08:09:32 -04:00
.makefile add #:unsafe option for #%declare 2020-11-10 10:36:03 -07:00
build.md fix typo 2020-08-20 18:39:33 -06:00
LICENSE Recent GMP is under LGPL v3. 2020-05-01 22:26:25 -04:00
Makefile add #:unsafe option for #%declare 2020-11-10 10:36:03 -07:00
README.md Fix README 2020-09-06 09:03:42 -04:00

README.md

Racket is a general-purpose programming language and an ecosystem for language-oriented programming.

This repository holds the source code for the core of Racket plus some related packages. The rest of the Racket distribution source code is in other repositories, mostly under the Racket GitHub organization.

Quick Start

Pre-built versions of Racket for a variety of operating systems and architectures, as well as convenient source distributions are available at

https://download.racket-lang.org

Racket comes with extensive documentation, including several tutorials. You can read all of this documentation, as well as documentation for third-party packages at

https://docs.racket-lang.org

Building from Source

For information on building Racket from this repository, see the Build Guide.

Contributing

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

By making a contribution, you are agreeing that your contribution is licensed under the LGPLv3, Apache 2.0, and MIT licenses. Those licenses are available in this repository in the files racket/src/LICENSE-LGPL.txt, racket/src/LICENSE-APACHE.txt, and racket/src/LICENSE-MIT.txt.

See the Racket Build Guide for more guidance on contributing.

The Friendly Environment Policy contains guidelines on expected behavior within the Racket community.

License

Racket is free software; see LICENSE for more details.