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authorWilliam Carroll <wpcarro@gmail.com>2018-09-10T18·51-0400
committerWilliam Carroll <wpcarro@gmail.com>2018-09-10T18·53-0400
commit17ee0e400bef47c371afcae76037f9ea6a44ad13 (patch)
tree0e5efee6f00e402890e91f3eceb4b29408a498b6 /configs/shared/emacs/.emacs.d/elpa/cider-20180719.542/cider-apropos.el
parent8b2fadf4776b7ddb4a67b4bc8ff6463770e56028 (diff)
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+;;; cider-apropos.el --- Apropos functionality for Clojure -*- lexical-binding: t -*-
+
+;; Copyright © 2014-2018 Jeff Valk, Bozhidar Batsov and CIDER contributors
+;;
+;; Author: Jeff Valk <jv@jeffvalk.com>
+
+;; 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:
+
+;; Apropos functionality for Clojure.
+
+;;; Code:
+
+(require 'cider-doc)
+(require 'cider-util)
+(require 'subr-x)
+(require 'cider-compat)
+
+(require 'cider-client)
+(require 'cider-popup)
+(require 'nrepl-dict)
+
+(require 'clojure-mode)
+(require 'apropos)
+(require 'button)
+
+(defconst cider-apropos-buffer "*cider-apropos*")
+
+(defcustom cider-apropos-actions '(("display-doc" . cider-doc-lookup)
+                                   ("find-def" . cider--find-var)
+                                   ("lookup-on-grimoire" . cider-grimoire-lookup))
+  "Controls the actions to be applied on the symbol found by an apropos search.
+The first action key in the list will be selected as default.  If the list
+contains only one action key, the associated action function will be
+applied automatically.  An action function can be any function that receives
+the symbol found by the apropos search as argument."
+  :type '(alist :key-type string :value-type function)
+  :group 'cider
+  :package-version '(cider . "0.13.0"))
+
+(define-button-type 'apropos-special-form
+  'apropos-label "Special form"
+  'apropos-short-label "s"
+  'face 'font-lock-keyword-face
+  'help-echo "mouse-2, RET: Display more help on this special form"
+  'follow-link t
+  'action (lambda (button)
+            (describe-function (button-get button 'apropos-symbol))))
+
+(defun cider-apropos-doc (button)
+  "Display documentation for the symbol represented at BUTTON."
+  (cider-doc-lookup (button-get button 'apropos-symbol)))
+
+(defun cider-apropos-summary (query ns docs-p include-private-p case-sensitive-p)
+  "Return a short description for the performed apropos search.
+
+QUERY can be a regular expression list of space-separated words
+\(e.g take while) which will be converted to a regular expression
+\(like take.+while) automatically behind the scenes.  The search may be
+limited to the namespace NS, and may optionally search doc strings
+\(based on DOCS-P), include private vars (based on INCLUDE-PRIVATE-P),
+and be case-sensitive (based on CASE-SENSITIVE-P)."
+  (concat (if case-sensitive-p "Case-sensitive " "")
+          (if docs-p "Documentation " "")
+          (format "Apropos for %S" query)
+          (if ns (format " in namespace %S" ns) "")
+          (if include-private-p
+              " (public and private symbols)"
+            " (public symbols only)")))
+
+(defun cider-apropos-highlight (doc query)
+  "Return the DOC string propertized to highlight QUERY matches."
+  (let ((pos 0))
+    (while (string-match query doc pos)
+      (setq pos (match-end 0))
+      (put-text-property (match-beginning 0)
+                         (match-end 0)
+                         'font-lock-face apropos-match-face doc)))
+  doc)
+
+(defun cider-apropos-result (result query docs-p)
+  "Emit a RESULT matching QUERY into current buffer, formatted for DOCS-P."
+  (nrepl-dbind-response result (name type doc)
+    (let* ((label (capitalize (if (string= type "variable") "var" type)))
+           (help (concat "Display doc for this " (downcase label))))
+      (cider-propertize-region (list 'apropos-symbol name
+                                     'action 'cider-apropos-doc
+                                     'help-echo help)
+        (insert-text-button name 'type 'apropos-symbol)
+        (insert "\n  ")
+        (insert-text-button label 'type (intern (concat "apropos-" type)))
+        (insert ": ")
+        (let ((beg (point)))
+          (if docs-p
+              (insert (cider-apropos-highlight doc query) "\n")
+            (insert doc)
+            (fill-region beg (point))))
+        (insert "\n")))))
+
+(declare-function cider-mode "cider-mode")
+
+(defun cider-show-apropos (summary results query docs-p)
+  "Show SUMMARY and RESULTS for QUERY in a pop-up buffer, formatted for DOCS-P."
+  (with-current-buffer (cider-popup-buffer cider-apropos-buffer 'select 'apropos-mode 'ancillary)
+    (let ((inhibit-read-only t))
+      (if (boundp 'header-line-format)
+          (setq-local header-line-format summary)
+        (insert summary "\n\n"))
+      (dolist (result results)
+        (cider-apropos-result result query docs-p))
+      (goto-char (point-min)))))
+
+;;;###autoload
+(defun cider-apropos (query &optional ns docs-p privates-p case-sensitive-p)
+  "Show all symbols whose names match QUERY, a regular expression.
+QUERY can also be a list of space-separated words (e.g. take while) which
+will be converted to a regular expression (like take.+while) automatically
+behind the scenes.  The search may be limited to the namespace NS, and may
+optionally search doc strings (based on DOCS-P), include private vars
+\(based on PRIVATES-P), and be case-sensitive (based on CASE-SENSITIVE-P)."
+  (interactive
+   (cons (read-string "Search for Clojure symbol (a regular expression): ")
+         (when current-prefix-arg
+           (list (let ((ns (completing-read "Namespace (default is all): " (cider-sync-request:ns-list))))
+                   (if (string= ns "") nil ns))
+                 (y-or-n-p "Search doc strings? ")
+                 (y-or-n-p "Include private symbols? ")
+                 (y-or-n-p "Case-sensitive? ")))))
+  (cider-ensure-connected)
+  (cider-ensure-op-supported "apropos")
+  (if-let* ((summary (cider-apropos-summary
+                      query ns docs-p privates-p case-sensitive-p))
+            (results (cider-sync-request:apropos query ns docs-p privates-p case-sensitive-p)))
+      (cider-show-apropos summary results query docs-p)
+    (message "No apropos matches for %S" query)))
+
+;;;###autoload
+(defun cider-apropos-documentation ()
+  "Shortcut for (cider-apropos <query> nil t)."
+  (interactive)
+  (cider-ensure-connected)
+  (cider-ensure-op-supported "apropos")
+  (cider-apropos (read-string "Search for Clojure documentation (a regular expression): ") nil t))
+
+(defun cider-apropos-act-on-symbol (symbol)
+  "Apply selected action on SYMBOL."
+  (let* ((first-action-key (car (car cider-apropos-actions)))
+         (action-key (if (= 1 (length cider-apropos-actions))
+                         first-action-key
+                       (completing-read (format "Choose action to apply to `%s` (default %s): "
+                                                symbol first-action-key)
+                                        cider-apropos-actions nil nil nil nil first-action-key)))
+         (action-fn (cdr (assoc action-key cider-apropos-actions))))
+    (if action-fn
+        (funcall action-fn symbol)
+      (user-error "Unknown action `%s`" action-key))))
+
+;;;###autoload
+(defun cider-apropos-select (query &optional ns docs-p privates-p case-sensitive-p)
+  "Similar to `cider-apropos', but presents the results in a completing read.
+Show all symbols whose names match QUERY, a regular expression.
+QUERY can also be a list of space-separated words (e.g. take while) which
+will be converted to a regular expression (like take.+while) automatically
+behind the scenes.  The search may be limited to the namespace NS, and may
+optionally search doc strings (based on DOCS-P), include private vars
+\(based on PRIVATES-P), and be case-sensitive (based on CASE-SENSITIVE-P)."
+  (interactive
+   (cons (read-string "Search for Clojure symbol (a regular expression): ")
+         (when current-prefix-arg
+           (list (let ((ns (completing-read "Namespace (default is all): " (cider-sync-request:ns-list))))
+                   (if (string= ns "") nil ns))
+                 (y-or-n-p "Search doc strings? ")
+                 (y-or-n-p "Include private symbols? ")
+                 (y-or-n-p "Case-sensitive? ")))))
+  (cider-ensure-connected)
+  (cider-ensure-op-supported "apropos")
+  (if-let* ((summary (cider-apropos-summary
+                      query ns docs-p privates-p case-sensitive-p))
+            (results (mapcar (lambda (r) (nrepl-dict-get r "name"))
+                             (cider-sync-request:apropos query ns docs-p privates-p case-sensitive-p))))
+      (cider-apropos-act-on-symbol (completing-read (concat summary ": ") results))
+    (message "No apropos matches for %S" query)))
+
+;;;###autoload
+(defun cider-apropos-documentation-select ()
+  "Shortcut for (cider-apropos-select <query> nil t)."
+  (interactive)
+  (cider-ensure-connected)
+  (cider-ensure-op-supported "apropos")
+  (cider-apropos-select (read-string "Search for Clojure documentation (a regular expression): ") nil t))
+
+(provide 'cider-apropos)
+
+;;; cider-apropos.el ends here