A statically typed lisp, without a GC, for real-time applications.
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Scott Olsen f4bcc28fc0
feat: register-type improvements (#1332)
* fix: don't instantiate dummy fields for external types

For ANSI C compatibility reasons, we add a dummy field for memberless
types defined in Carp (see commit 59ef5bbf2b). When registering a type
with no fields, `(register-type A [])`, we'd also attempt to set our
dummy field in the Carp generated initializer for the type. However, the
registered type is totally opaque from the perspective of Carp, and we
can't assume it has a field corresponding to our dummy field.

This commit changes our handling of __dummy in initializers to avoid
setting it for registered types.

* feat: automatically implement str and prn for registered types

This commit makes the auto-generated str and prn functions for
registered types implement the str and prn interfaces, removing the need
for users to call implements on these functions explicitly.

It alters the signature of `autoDerive` in Primitives.hs slightly to
make it more flexible (since registered types have no delete or copy
functions that we can add to the implementation lists of these
interfaces).

* docs: add docs on register-type to CInterop.md

The new documentation clarifies the usage of `register-type` and accounts
for the changes in the prior two commits.

* fix: fix function signatures for generic memberless initers

Filter out dummy field arguments.

* docs: Add details about type name overrides to CInterop.md

* docs: clarify that users can implement delete for registered types
2021-10-18 16:48:02 +02:00
.github ci: Merges different platform releases into one (#1313) 2021-09-17 13:49:06 +02:00
app build: 0.5.3 2021-09-17 13:54:26 +02:00
bench fix: Unify aupdate and aupdate! with other update functions (#1220) 2021-05-25 12:11:31 +02:00
core Update ControlMacros.carp (#1336) 2021-10-14 10:24:59 +02:00
docs feat: register-type improvements (#1332) 2021-10-18 16:48:02 +02:00
docs-html PR: additional local documentation as html (#1229) 2021-05-31 10:15:09 +02:00
examples (and) and (or) now handle any number of parameters (#1251) 2021-06-20 21:44:04 +02:00
headerparse Refactor: clean up Env module, store type environments in modules (#1207) 2021-05-19 19:20:48 +02:00
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 feat: register-type improvements (#1332) 2021-10-18 16:48:02 +02:00
test fix: #1261 (#1272) 2021-09-04 15:07:52 +02:00
.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 build: 0.5.3 2021-09-17 13:54:26 +02:00
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.