108 lines
3.6 KiB
EmacsLisp
108 lines
3.6 KiB
EmacsLisp
;;; system --- System 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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;; `System' is just a state monad which holds the state of the editor.
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;; Each system has to have a `start' function to start the setup process.
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;;
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;;; Code:
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(require 'seq)
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(require 'fg42/system/core)
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(defun fg42/system-get-cube (system cube-name)
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"Return the cube with CUBE-NAME ins the SYSTEM."
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;; car is the name cdr is the cube itself
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(cdr (assoc cube-name (fg42/system-get system :cubes))))
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(defun fg42/system-get-cube-property (system cube-name prop)
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"Return the value of the given property PROP of CUBE-NAME in SYSTEM."
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(let ((cube (fg42/system-get-cube system cube-name)))
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(plist-get cube prop)))
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(defun fg42/system-set-cube-property (system cube-name prop v)
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"Set the given property PROP of CUBE-NAME to V in SYSTEM."
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(let ((cube (append (list prop v)
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(fg42/system-get-cube system cube-name))))
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(fg42/system-register-cube system cube-name cube)))
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(defun fg42/system-setup-cube (system cube-name)
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"Setup the given CUBE-NAME using the given SYSTEM."
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(if (eq t (fg42/system-get-cube-property system cube-name :setup-finished))
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system
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(let ((cube (fg42/system-get-cube system cube-name)))
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(when (null cube)
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(error "Can't find cube '%s' in the system" cube-name))
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(message "Setting up '%s' cube..." cube-name)
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(let ((updated-system
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(seq-reduce
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(lambda (sys requirement)
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(fg42/system-setup-cube sys requirement))
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(plist-get cube :requires)
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system)))
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;; Run the init function the cube.
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;; The init function is just for setup, the return value of it
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;; and the changes that it might make to the system will be discarded.
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(funcall (or (plist-get cube :init) (lambda () ())))
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;; Setup the automods
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(fg42/system-cube-auto-modes system cube)
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;; Setup the hooks
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(fg42/system-cube-hooks system cube)
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(fg42/system-set-cube-property updated-system cube-name :setup-finished t)))))
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(defun fg42/system-setup-cubes (system)
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"Setup the cubes in the given SYSTEM by creating a dependency tree."
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(let ((cubes (fg42/system-get system :cubes)))
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(seq-reduce
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(lambda (sys cube-pair)
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(fg42/system-setup-cube sys (car cube-pair)))
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cubes
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system)))
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(defun fg42/system-cube-auto-modes (system cube)
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"Setup the auto modes of the given CUBE using the given SYSTEM."
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(dolist (automod (plist-get cube :auto-modes))
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(when automod
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(add-to-list 'auto-mode-alist automod))))
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(defun fg42/system-cube-hooks (system cube)
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"Setup the auto modes of the given CUBE using the given SYSTEM."
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(dolist (hook (plist-get cube :hooks))
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(when hook
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(add-hook (car hook) (cdr hook)))))
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(provide 'fg42/system/cubes)
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;;; cubes.el ends here
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