HCPL is a programming language and a proof checker based on illative combinatory logic - a foundational system dating back to the work of Haskell Curry and his school. One could say that the logic is dynamically typed. As a programming language, HCPL is similar to Lisp but with more syntactic sugar.
- Functional language with pattern matching, macros, modules and custom syntax extensions.
- Relatively efficient interpreter with unboxed values.
- Higher-order illative logic with basic support for inductive datatypes.
- Rudimentary tactics and standard library.
- Syntax highlighting for Kate.
The current version is a prototype, but it is complete and stable enough to be usable.
- OCaml
- dune
- m4, sed, diff, GNU make
- Kate text editor (optional)
To compile HCPL type:
make
To run tests type:
make test
To install HCPL type:
make configure
make
make install
During installation you will be asked for the data directory. In this directory the examples, the standard library and other data files of HCPL will be stored.
After installation you should be able to run HCPL with: hcpl file.hcpl or hcpl -i for REPL. Type hcpl --help for a list of
options. To remove HCPL from your system type: uninstall-hcpl (note:
this will remove the data directory completely).
The examples/ subdirectory of the data directory
contains commented examples which form a tutorial introduction to
HCPL. Some knowledge of logic and functional programming is necessary
to understand them. You should read the examples in their numerical
order. Preferably, *.hcpl files should be edited in Kate as syntax
highlighting is installed for this editor. In case the highlighting
does not work, there are also html versions of the examples.
Copyright (C) 2013-2021 by Lukasz Czajka.
HCPL is distributed under the MIT license. See the LICENSE file.