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Typed Racket
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Andrew Kent be155fa3e3 propagate expected type info further down AST 
Previously expected propositions were erased frequently
(at lets and ifs) and checking for logical entailment
was unidirectional instead of bidirectional. In other words,
instead of checking if propositions held at the leaves
of the AST, we would typecheck the AST and blindly propagate
up ALL logical info we learned at each step. This meant that
we would get exponential blow up of propositions even when
we didn't care about their content.

With this commit, instead now we send down expected types
*and* propositions so we can verify expected types and
propisitions are satisfied at leaves, thereby relieving the
need to constantly report up huge amounts of logical info
while typechecking.
2016-12-20 07:43:21 -05:00
source-syntax Remove extra directories. 2014-12-02 00:53:36 -05:00
typed-racket Add syntax for poly structs in require/typed 2016-07-21 12:00:08 -04:00
typed-racket-compatibility Add syntax for poly structs in require/typed 2016-07-21 12:00:08 -04:00
typed-racket-doc add type syntax for Union/Intersection 2016-12-19 20:16:36 -05:00
typed-racket-lib propagate expected type info further down AST 2016-12-20 07:43:21 -05:00
typed-racket-more remove interning for most Reps in TR 2016-12-16 15:18:50 -05:00
typed-racket-test propagate expected type info further down AST 2016-12-20 07:43:21 -05:00
.gitignore Add standard .gitignore file. 2014-12-06 17:46:25 -05:00
.travis.yml Revise Travis tests for 43a8cce3f. 2015-12-29 17:58:00 -05:00
issue_template.md Create issue_template.md 2016-02-17 14:51:06 -05:00
README.md Fix Travis image URL in the README 2015-02-25 15:17:13 -05:00

README.md

Typed Racket

Build Status

Typed Racket is Racket's gradually-typed sister language which lets you add statically-checked type annotations to your programs. For more information, see the Typed Racket Guide.

Installation

Typed Racket is bundled in the default Racket distribution, which you can download from Racket's download page.

You can also manually install it from the main package catalog with the following command:

raco pkg install typed-racket

Documentation

The documentation is also bundled in your local copy of Typed Racket.

Copyright (c) 2010-2015 PLT Design Inc.

This package is distributed under the GNU Lesser General Public License (LGPL). This means that you can link this package into proprietary applications, provided you follow the rules stated in the LGPL. You can also modify this package; if you distribute a modified version, you must distribute it under the terms of the LGPL, which in particular means that you must release the source code for the modified software. See http://www.gnu.org/copyleft/lesser.html for more information.