83 lines
2.5 KiB
EmacsLisp
83 lines
2.5 KiB
EmacsLisp
;;; Cube --- Cube library of FG42 -*- lexical-binding: t; -*-
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;;
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;; Copyright (c) 2010-2021 Sameer Rahmani & Contributors
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;;
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;; Author: Sameer Rahmani <lxsameer@gnu.org>
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;; URL: https://gitlab.com/FG42/FG42
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;; Version: 3.0.0
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;;
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;
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;;; Commentary:
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;; Cubes are the building blocks of any `FG42' editor. Each `cube' is a
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;; unit which defines different abilities in a deterministic and idempotent
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;; way. Cubes are composable and a composition of cubes creates an editor.
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;;
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;;; Code:
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(require 'seq)
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(require 'fg42/utils)
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(require 'fg42/system/dependencies)
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(require 'fg42/system/keys)
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(defmacro defcube (name params &rest body)
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"Define a cube with the given NAME, PARAMS and BODY."
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(declare (indent 1))
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`(defun ,name ,params ,@body))
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(defun fg42/cube-run (cube system)
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"Run the given CUBE with the given SYSTEM.
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Returns a pair of new system and the cube vlaue."
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(funcall cube system))
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(defun fg42/cube-compose (&rest cubes)
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"Compose the given CUBES."
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(lambda (system)
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(cond
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((null cubes) (cons system '()))
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(t
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(seq-reduce
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(lambda (s cube)
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(fg42/cube-apply (fg42/cube-run cube s)))
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cubes
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system)))))
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(defun fg42/cube--apply (system cube)
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"Apply thie given CUBE to given SYSTEM."
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(if cube
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(let ((name (plist-get cube :name)))
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(-> system
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;; insert the cube into the state
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(fg42/system-register-cube name cube)
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;; Add the dependencies of the cube to the state
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(fg42/system-merge-dependencies name (plist-get cube :dependencies))
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;; Add the keybindings of the cube to the state
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(fg42/system-merge-keys name (plist-get cube :keys))))
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system))
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(defun fg42/cube-apply (system-cube-pair)
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"Apply the cube in the given SYSTEM-CUBE-PAIR to the system inside of it."
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(fg42/cube--apply (car system-cube-pair) (cdr system-cube-pair)))
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(provide 'fg42/cube)
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;;; cube.el ends here
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