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cider-clojuredocs.el
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cider-clojuredocs.el
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;;; cider-clojuredocs.el --- ClojureDocs integration -*- lexical-binding: t -*-
;; Copyright © 2014-2024 Bozhidar Batsov and CIDER contributors
;;
;; Author: Bozhidar Batsov <bozhidar@batsov.dev>
;; This program 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.
;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
;; This file is not part of GNU Emacs.
;;; Commentary:
;; A few commands for ClojureDocs documentation lookup.
;;; Code:
(require 'cider-client)
(require 'cider-common)
(require 'subr-x)
(require 'cider-popup)
(require 'cider-util)
(require 'nrepl-dict)
(require 'url-vars)
(defconst cider-clojuredocs-url "https://clojuredocs.org/")
(defconst cider-clojuredocs-buffer "*cider-clojuredocs*")
(defun cider-sync-request:clojuredocs-lookup (ns sym)
"Perform nREPL \"resource\" op with NS and SYM."
(thread-first `("op" "clojuredocs-lookup"
"ns" ,ns
"sym" ,sym)
(cider-nrepl-send-sync-request)
(nrepl-dict-get "clojuredocs")))
(defun cider-sync-request:clojuredocs-refresh ()
"Refresh the ClojureDocs cache."
(thread-first '("op" "clojuredocs-refresh-cache")
(cider-nrepl-send-sync-request)
(nrepl-dict-get "status")))
(defun cider-clojuredocs-replace-special (name)
"Convert the dashes in NAME to a ClojureDocs friendly format.
We need to handle \"?\", \".\", \"..\" and \"/\"."
(thread-last
name
(replace-regexp-in-string "\\?" "_q")
(replace-regexp-in-string "\\(\\.+\\)" "_\\1")
(replace-regexp-in-string "/" "fs")))
(defun cider-clojuredocs-url (name ns)
"Generate a ClojureDocs url from NAME and NS."
(let ((base-url cider-clojuredocs-url))
(when (and name ns)
(concat base-url ns "/" (cider-clojuredocs-replace-special name)))))
(defun cider-clojuredocs-web-lookup (sym)
"Open the ClojureDocs documentation for SYM in a web browser."
(if-let* ((var-info (cider-var-info sym)))
(let ((name (nrepl-dict-get var-info "name"))
(ns (nrepl-dict-get var-info "ns")))
(browse-url (cider-clojuredocs-url name ns)))
(error "Symbol %s not resolved" sym)))
;;;###autoload
(defun cider-clojuredocs-web (&optional arg)
"Open ClojureDocs documentation in the default web browser.
Prompts for the symbol to use, or uses the symbol at point, depending on
the value of `cider-prompt-for-symbol'. With prefix arg ARG, does the
opposite of what that option dictates."
(interactive "P")
(funcall (cider-prompt-for-symbol-function arg)
"ClojureDocs doc for"
#'cider-clojuredocs-web-lookup))
;;;###autoload
(defun cider-clojuredocs-refresh-cache ()
"Refresh the ClojureDocs cache."
(interactive)
(let ((result (cider-sync-request:clojuredocs-refresh)))
(if (member "ok" result)
(message "ClojureDocs cache refreshed successfully")
(message "An error occurred while trying to refresh the ClojureDocs cache"))))
(defun cider-create-clojuredocs-buffer (content)
"Create a new ClojureDocs buffer with CONTENT."
(with-current-buffer (cider-popup-buffer cider-clojuredocs-buffer t)
(read-only-mode -1)
(set-syntax-table clojure-mode-syntax-table)
(local-set-key (kbd "C-c C-d C-c") 'cider-clojuredocs)
(insert content)
(cider-popup-buffer-mode 1)
(view-mode 1)
(goto-char (point-min))
(current-buffer)))
(defun cider-clojuredocs--content (dict)
"Generate a nice string from DICT."
(with-temp-buffer
(insert "= " (nrepl-dict-get dict "ns") "/" (nrepl-dict-get dict "name") "\n\n")
(let ((arglists (nrepl-dict-get dict "arglists")))
(dolist (arglist arglists)
(insert (format " [%s]\n" arglist)))
(insert "\n")
(insert (nrepl-dict-get dict "doc"))
(insert "\n"))
(insert "\n== See Also\n\n")
(if-let ((see-alsos (nrepl-dict-get dict "see-alsos")))
(dolist (see-also see-alsos)
(insert-text-button (format "* %s\n" see-also)
'sym see-also
'action (lambda (btn)
(cider-clojuredocs-lookup (button-get btn 'sym)))
'help-echo (format "Press Enter or middle click to jump to %s" see-also)))
(insert "Not available\n"))
(insert "\n== Examples\n\n")
(if-let ((examples (nrepl-dict-get dict "examples")))
(dolist (example examples)
(insert (cider-font-lock-as-clojure example))
(insert "\n-------------------------------------------------\n"))
(insert "Not available\n"))
(insert "\n== Notes\n\n")
(if-let ((notes (nrepl-dict-get dict "notes")))
(dolist (note notes)
(insert note)
(insert "\n-------------------------------------------------\n"))
(insert "Not available\n"))
(buffer-string)))
(defun cider-clojuredocs-lookup (sym)
"Look up the ClojureDocs documentation for SYM."
(if-let ((docs (cider-sync-request:clojuredocs-lookup (cider-current-ns) sym)))
(progn
(pop-to-buffer (cider-create-clojuredocs-buffer (cider-clojuredocs--content docs)))
;; highlight the symbol in question in the docs buffer
(highlight-regexp
(regexp-quote
(or (cadr (split-string sym "/"))
sym))
'bold))
(user-error "ClojureDocs documentation for %s is not found" sym)))
;;;###autoload
(defun cider-clojuredocs (&optional arg)
"Open ClojureDocs documentation in a popup buffer.
Prompts for the symbol to use, or uses the symbol at point, depending on
the value of `cider-prompt-for-symbol'. With prefix arg ARG, does the
opposite of what that option dictates."
(interactive "P")
(when (cider-clojurescript-major-mode-p)
(user-error "`cider-clojuredocs' doesn't support ClojureScript"))
(funcall (cider-prompt-for-symbol-function arg)
"ClojureDocs doc for"
#'cider-clojuredocs-lookup))
(provide 'cider-clojuredocs)
;;; cider-clojuredocs.el ends here