A statically typed lisp, without a GC, for real-time applications.
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Scott Olsen d82e8a5a3f
refactor: add type candidates and template generators (#1361)
* refactor: add type candidates for validation

This commit adds a new module and type, the TypeCandidate, which
represents a potentially valid or invalid type. We use it as the
input for both type validation routines and type binding generation. The
type also allows us to unify the structure of sum types and product
types in an xobj agnostic way, paving the way for future simplification
of binding generation for type definitions.

This commit also removes SumtypeCase.hs, since it's no longer needed.

* refactor: add template generators; update type templates

This commit builds on the TypeCandidate data structure further by
providing "template generators" that work on candidates. Using
generators, templates for type functions ("methods") can be written
almost completely declaratively. Generators also remove some of the
typical boilerplate involved in creating templates from lists of tokens
and enable us to unify several of the generic and concrete templates for
types.

Generators can act on type candidates or their fields (for
field-specific functions). In general, this approach makes the
generation of type templates more structured. A type candidate now
contains all the information a generator needs to create appropriate
templates, thus it is a single and well-defined input for validation and
generation of user defined types.

This commit also updates the Deftype templates to use template
generators.

* refactor: use template generators for sumtype templates
2021-12-20 15:41:14 +01:00
.github ci: Merges different platform releases into one (#1313) 2021-09-17 13:49:06 +02:00
app Revert "fix: Ignore clang nitpick" 2021-11-19 19:57:14 +01:00
bench fix: Unify aupdate and aupdate! with other update functions (#1220) 2021-05-25 12:11:31 +02:00
core fix: ensure registered types with fields emit path (#1364) 2021-12-16 21:31:16 +01:00
docs feat: Adds flag to always output C id with headerparse (#1353) 2021-11-03 09:09:26 +01:00
docs-html PR: additional local documentation as html (#1229) 2021-05-31 10:15:09 +02:00
examples feat: add box type (#1358) 2021-11-30 10:35:22 +01:00
headerparse feat: Adds flag to always output C id with headerparse (#1353) 2021-11-03 09:09:26 +01:00
resources refactor: Move logos into resorces directory 2020-11-20 07:52:59 +01:00
scripts test: REPL (#1239) 2021-06-15 08:02:44 +02:00
src refactor: add type candidates and template generators (#1361) 2021-12-20 15:41:14 +01:00
test refactor: add type candidates and template generators (#1361) 2021-12-20 15:41:14 +01:00
.build.yml Fix nixpkgs build. 2020-11-14 15:28:17 +01:00
.clang-format core: do not have short functions on single lines 2019-10-30 11:07:32 +01:00
.dir-locals.el Ormolu in default.nix and emacs before-save hook. (#1059) 2020-12-08 22:09:57 +01:00
.gitignore chore: Move test-for-errors to test directory 2020-11-28 13:11:43 +01:00
.travis.yml Fix nixpkgs build. 2020-11-14 15:28:17 +01:00
CarpHask.cabal refactor: add type candidates and template generators (#1361) 2021-12-20 15:41:14 +01:00
CHANGELOG.md build: 0.5.3 2021-09-17 13:54:26 +02:00
default.nix chore: Simplify default.nix (#1085) 2020-12-21 13:46:10 +01:00
LICENSE new license 2016-08-23 15:43:10 +02:00
LUA_LICENSE lau license: fix referenced file 2019-01-14 12:08:36 +01:00
README.md build: 0.5.3 2021-09-17 13:54:26 +02:00
Setup.hs refactor: Apply Ormolu auto-formatting (#1045) 2020-12-02 16:33:37 +01:00
stack.yaml Try to fix Windows build failure switching resolver. 2020-05-23 00:29:44 +02:00

Carp

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WARNING! This is a research project and a lot of information here might become outdated and misleading without any explanation. Don't use it for anything important just yet!

Version 0.5.3 of the language is out!

About

Carp is a programming language designed to work well for interactive and performance sensitive use cases like games, sound synthesis and visualizations.

The key features of Carp are the following:

  • Automatic and deterministic memory management (no garbage collector or VM)
  • Inferred static types for great speed and reliability
  • Ownership tracking enables a functional programming style while still using mutation of cache-friendly data structures under the hood
  • No hidden performance penalties allocation and copying are explicit
  • Straightforward integration with existing C code
  • Lisp macros, compile time scripting and a helpful REPL

Learn more

Join the chat at https://gitter.im/eriksvedang/Carp

A Very Small Example

(load-and-use SDL)

(defn tick [state]
  (+ state 10))

(defn draw [app rend state]
  (bg rend &(rgb (/ @state 2) (/ @state 3) (/ @state 4))))

(defn main []
  (let [app (SDLApp.create "The Minimalistic Color Generator" 400 300)
        state 0]
    (SDLApp.run-with-callbacks &app SDLApp.quit-on-esc tick draw state)))

For instructions on how to run Carp code, see this document.

For more examples, check out the examples directory.

Maintainers

Contributing

Thanks to all the awesome people who have contributed to Carp over the years!

We are always looking for more help check out the contributing guide to get started.

License

Copyright 2016 - 2021 Erik Svedäng

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

The regular expression implementation as found in src/carp_regex.h are Copyright (C) 1994-2017 Lua.org, PUC-Rio under the terms of the MIT license. Details can be found in the License file LUA_LICENSE.