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;;; syncdoc-type-hierarchy.el--- -*- lexical-binding: t -*-
;; Copyright (C) 2023-2024 Free Software Foundation, Inc.
;; Author: Andrea Corallo <acorallo@gnu.org>
;; Keywords: documentation
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; This file is used to keep the type hierarchy representation present
;; in the elisp manual in sync with the current type hierarchy. This
;; is specified in `cl--direct-supertypes-of-type' in cl-preloaded.el, so each
;; time `cl--direct-supertypes-of-type' is modified
;; `syncdoc-update-type-hierarchy' must be run before the
;; documentation is regenerated.
;; We do not call this directly from make docs in order not to add a
;; dependency on the tool "dot".
;;; Code:
(require 'cl-lib)
(defconst syncdoc-file (or (macroexp-file-name) buffer-file-name))
(defconst syncdoc-emacs-repo-dir
(expand-file-name "../" (file-name-directory syncdoc-file)))
(defconst syncdoc-lispref-dir
(expand-file-name "doc/lispref/" syncdoc-emacs-repo-dir))
(defconst syncdoc-all-types
(let (res)
(mapatoms (lambda (type)
(when (cl-find-class type)
(push type res)))
obarray)
(nreverse
(merge-ordered-lists
(sort
(mapcar (lambda (type) (cl--class-allparents (cl-find-class type)))
res)
(lambda (ts1 ts2) (> (length ts1) (length ts2)))))))
"List of all types.")
(defconst syncdoc-hierarchy
(progn
;; Require it here so we don't load it before `syncdoc-all-types' is
;; computed.
(cl-loop
with h = (make-hash-table :test #'eq)
for type in syncdoc-all-types
do (puthash type (mapcar #'cl--class-name
(cl--class-parents (cl-find-class type)))
h)
finally return h)))
(defun syncdoc-insert-dot-content (rankdir)
(maphash (lambda (child parents)
(cl-loop for parent in parents
do (insert " \"" (symbol-name child) "\" -> \""
(symbol-name parent) "\";\n")))
syncdoc-hierarchy)
(sort-lines nil (point-min) (point-max))
(goto-char (point-min))
(insert "digraph {\n rankdir=\"" rankdir "\";\n")
(goto-char (point-max))
(insert "}\n"))
(defun syncdoc-make-type-table (file)
(with-temp-file file
(insert "|Type| Derived Types|\n|-\n")
(let ((subtypes ()))
;; First collect info from the "builtin" types.
(maphash (lambda (type parents)
(dolist (parent parents)
(push type (alist-get parent subtypes))))
syncdoc-hierarchy)
(sort subtypes
(lambda (x1 x2)
(< (length (memq (car x2) syncdoc-all-types))
(length (memq (car x1) syncdoc-all-types)))))
(cl-loop for (type . children) in subtypes
do (insert "|" (symbol-name type) " |")
do (cl-loop with x = 0
for child in children
for child-len = (length (symbol-name child))
when (> (+ x child-len 2) 60)
do (progn
(insert "|\n||")
(setq x 0))
do (insert (symbol-name child) " ")
do (cl-incf x (1+ child-len)) )
do (insert "\n")))
(require 'org-table)
(declare-function 'org-table-align "org")
(org-table-align)))
(defun syncdoc-update-type-hierarchy0 ()
"Update the type hierarchy representation used by the elisp manual."
(with-temp-buffer
(syncdoc-insert-dot-content "LR")
(with-demoted-errors "%S" ;In case "dot" is not found!
(call-process-region nil nil "dot" t (current-buffer) nil "-Tjpg" "-o"
(expand-file-name "elisp_type_hierarchy.jpg"
syncdoc-lispref-dir))))
(syncdoc-make-type-table (expand-file-name "elisp_type_hierarchy.txt"
syncdoc-lispref-dir)))
(defun syncdoc-update-type-hierarchy ()
"Update the type hierarchy representation used by the elisp manual."
(interactive)
(call-process (expand-file-name "src/emacs" syncdoc-emacs-repo-dir)
nil t t "-Q" "--batch" "-l" syncdoc-file
"-f" "syncdoc-update-type-hierarchy0"))
;;; syncdoc-type-hierarchy.el ends here
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