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357 рядки
15 KiB
357 рядки
15 KiB
;;; cider-browse-spec.el --- CIDER spec browser
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;; Copyright © 2017 Juan Monetta, Bozhidar Batsov and CIDER contributors
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;; Author: Juan Monetta <jpmonettas@gmail.com>
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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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;; 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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;; 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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;; This file is not part of GNU Emacs.
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;;; Commentary:
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;; M-x cider-browse-spec
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;;
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;; Display a spec description you can browse.
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;; Pressing <enter> over a sub spec will take you to the description of that sub spec.
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;; Pressing ^ takes you to the list of all specs.
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;; M-x cider-browse-spec-all
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;;
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;; Explore clojure.spec registry by browsing a list of all specs.
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;; Pressing <enter> over a spec display the spec description you can browse.
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;;; Code:
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(require 'cider-client)
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(require 'cider-compat)
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(require 'cider-util)
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(require 'cl-lib)
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(require 'nrepl-dict)
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(require 'seq)
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(require 'subr-x)
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(require 'help-mode)
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;; The buffer names used by the spec browser
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(defconst cider-browse-spec-buffer "*cider-spec-browser*")
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(defconst cider-browse-spec-example-buffer "*cider-spec-example*")
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;; Mode Definition
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(defvar cider-browse-spec-mode-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map (make-composed-keymap button-buffer-map
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cider-popup-buffer-mode-map))
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(define-key map (kbd "RET") #'cider-browse-spec--browse-at)
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(define-key map "n" #'forward-button)
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(define-key map "p" #'backward-button)
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map)
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"Keymap for `cider-browse-spec-mode'.")
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(define-derived-mode cider-browse-spec-mode special-mode "Specs"
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"Major mode for browsing Clojure specs.
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\\{cider-browse-spec-mode-map}"
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(setq-local electric-indent-chars nil)
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(setq-local sesman-system 'CIDER)
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(when cider-special-mode-truncate-lines
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(setq-local truncate-lines t)))
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(defvar cider-browse-spec--current-spec nil)
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(defvar cider-browse-spec-view-mode-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map help-mode-map)
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(define-key map (kbd "RET") #'cider-browse-spec--browse-at)
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(define-key map "^" #'cider-browse-spec-all)
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(define-key map "e" #'cider-browse-spec--print-curr-spec-example)
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(define-key map "n" #'forward-button)
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(define-key map "p" #'backward-button)
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map)
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"Keymap for `cider-browse-spec-view-mode'.")
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(define-derived-mode cider-browse-spec-view-mode help-mode "Spec"
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"Major mode for displaying CIDER spec.
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\\{cider-browse-spec-view-mode-map}"
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(setq-local cider-browse-spec--current-spec nil)
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(setq-local electric-indent-chars nil)
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(setq-local sesman-system 'CIDER)
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(when cider-special-mode-truncate-lines
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(setq-local truncate-lines t)))
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(defvar cider-browse-spec-example-mode-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map cider-popup-buffer-mode-map)
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(define-key map "^" #'cider-browse-spec-all)
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(define-key map "e" #'cider-browse-spec--print-curr-spec-example)
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(define-key map "g" #'revert-buffer)
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map)
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"Keymap for `cider-browse-spec-example-mode'.")
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(define-derived-mode cider-browse-spec-example-mode special-mode "Example"
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"Major mode for Clojure spec examples.
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\\{cider-browse-spec-example-mode-map}"
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(setq-local electric-indent-chars nil)
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(setq-local revert-buffer-function #'cider-browse-spec--example-revert-buffer-function)
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(setq-local sesman-system 'CIDER)
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(when cider-special-mode-truncate-lines
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(setq-local truncate-lines t)))
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;; Non interactive functions
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(define-button-type 'cider-browse-spec--spec
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'action #'cider-browse-spec--browse-at
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'face nil
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'follow-link t
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'help-echo "View spec")
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(defun cider-browse-spec--draw-list-buffer (buffer title specs)
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"Reset contents of BUFFER.
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Display TITLE at the top and SPECS are indented underneath."
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(with-current-buffer buffer
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(cider-browse-spec-mode)
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(let ((inhibit-read-only t))
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(erase-buffer)
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(goto-char (point-max))
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(insert (cider-propertize title 'emph) "\n")
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(dolist (spec-name specs)
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(insert (propertize " " 'spec-name spec-name))
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(thread-first (cider-font-lock-as-clojure spec-name)
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(insert-text-button 'type 'cider-browse-spec--spec)
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(button-put 'spec-name spec-name))
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(insert (propertize "\n" 'spec-name spec-name)))
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(goto-char (point-min)))))
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(defun cider--qualified-keyword-p (str)
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"Return non nil if STR is a namespaced keyword."
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(string-match-p "^:.+/.+$" str))
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(defun cider--spec-fn-p (value fn-name)
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"Return non nil if VALUE is clojure.spec.[alpha]/FN-NAME."
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(string-match-p (concat "^\\(clojure.spec\\|clojure.spec.alpha\\)/" fn-name "$") value))
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(defun cider-browse-spec--pprint (form)
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"Given a spec FORM builds a multi line string with a pretty render of that FORM."
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(cond ((stringp form)
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(if (cider--qualified-keyword-p form)
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(with-temp-buffer
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(thread-first form
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(insert-text-button 'type 'cider-browse-spec--spec)
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(button-put 'spec-name form))
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(buffer-string))
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;; to make it easier to read replace all clojure.spec ns with s/
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;; and remove all clojure.core ns
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(thread-last form
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(replace-regexp-in-string "^\\(clojure.spec\\|clojure.spec.alpha\\)/" "s/")
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(replace-regexp-in-string "^\\(clojure.core\\)/" ""))))
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((and (listp form) (stringp (cl-first form)))
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(let ((form-tag (cl-first form)))
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(cond
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;; prettier fns #()
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((string-equal form-tag "clojure.core/fn")
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(if (equal (cl-second form) '("%"))
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(format "#%s" (cl-reduce #'concat (mapcar #'cider-browse-spec--pprint (cl-rest (cl-rest form)))))
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(format "(fn [%%] %s)" (cl-reduce #'concat (mapcar #'cider-browse-spec--pprint (cl-rest (cl-rest form)))))))
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;; prettier (s/and )
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((cider--spec-fn-p form-tag "and")
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(format "(s/and\n%s)" (string-join (thread-last (cl-rest form)
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(mapcar #'cider-browse-spec--pprint)
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(mapcar (lambda (x) (format "%s" x))))
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"\n")))
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;; prettier (s/or )
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((cider--spec-fn-p form-tag "or")
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(let ((name-spec-pair (seq-partition (cl-rest form) 2)))
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(format "(s/or\n%s)" (string-join
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(thread-last name-spec-pair
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(mapcar (lambda (s) (format "%s %s" (cl-first s) (cider-browse-spec--pprint (cl-second s))))))
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"\n"))))
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;; prettier (s/merge )
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((cider--spec-fn-p form-tag "merge")
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(format "(s/merge\n%s)" (string-join (thread-last (cl-rest form)
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(mapcar #'cider-browse-spec--pprint)
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(mapcar (lambda (x) (format "%s" x))))
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"\n")))
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;; prettier (s/keys )
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((cider--spec-fn-p form-tag "keys")
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(let ((keys-args (seq-partition (cl-rest form) 2)))
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(format "(s/keys%s)" (thread-last
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keys-args
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(mapcar (lambda (s)
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(let ((key-type (cl-first s))
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(specs-vec (cl-second s)))
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(concat "\n" key-type
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" ["
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(string-join (thread-last specs-vec
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(mapcar #'cider-browse-spec--pprint)
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(mapcar (lambda (x) (format "%s" x))))
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"\n")
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"]"))))
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(cl-reduce #'concat)))))
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;; prettier (s/multi-spec)
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((cider--spec-fn-p form-tag "multi-spec")
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(let ((multi-method (cl-second form))
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(retag (cl-third form))
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(sub-specs (cl-rest (cl-rest (cl-rest form)))))
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(format "(s/multi-spec %s %s\n%s)"
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multi-method
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retag
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(string-join
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(thread-last sub-specs
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(mapcar (lambda (s)
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(concat "\n\n" (cl-first s) " " (cider-browse-spec--pprint (cl-second s))))))
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"\n"))))
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;; prettier (s/cat )
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((cider--spec-fn-p form-tag "cat")
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(let ((name-spec-pairs (seq-partition (cl-rest form) 2)))
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(format "(s/cat %s)"
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(thread-last name-spec-pairs
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(mapcar (lambda (s)
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(concat "\n" (cl-first s) " " (cider-browse-spec--pprint (cl-second s)))))
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(cl-reduce #'concat)))))
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;; prettier (s/alt )
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((cider--spec-fn-p form-tag "alt")
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(let ((name-spec-pairs (seq-partition (cl-rest form) 2)))
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(format "(s/alt %s)"
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(thread-last name-spec-pairs
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(mapcar (lambda (s)
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(concat "\n" (cl-first s) " " (cider-browse-spec--pprint (cl-second s)))))
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(cl-reduce #'concat)))))
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;; prettier (s/fspec )
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((cider--spec-fn-p form-tag "fspec")
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(thread-last (seq-partition (cl-rest form) 2)
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(cl-remove-if (lambda (s) (and (stringp (cl-second s))
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(string-empty-p (cl-second s)))))
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(mapcar (lambda (s)
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(format "\n%-11s: %s" (pcase (cl-first s)
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(":args" "arguments")
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(":ret" "returns")
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(":fn" "invariants"))
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(cider-browse-spec--pprint (cl-second s)))))
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(cl-reduce #'concat)
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(format "%s")))
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;; every other with no special management
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(t (format "(%s %s)"
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(cider-browse-spec--pprint form-tag)
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(string-join (mapcar #'cider-browse-spec--pprint (cl-rest form)) " "))))))
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(t (format "%s" form))))
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(defun cider-browse-spec--pprint-indented (spec-form)
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"Indent (pretty-print) and font-lock SPEC-FORM.
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Return the result as a string."
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(with-temp-buffer
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(clojure-mode)
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(insert (cider-browse-spec--pprint spec-form))
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(indent-region (point-min) (point-max))
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(cider--font-lock-ensure)
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(buffer-string)))
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(defun cider-browse-spec--draw-spec-buffer (buffer spec spec-form)
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"Reset contents of BUFFER and draws everything needed to browse the SPEC-FORM.
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Display SPEC as a title and uses `cider-browse-spec--pprint' to display
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a more user friendly representation of SPEC-FORM."
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(with-current-buffer buffer
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(let ((inhibit-read-only t))
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(cider--help-setup-xref (list #'cider-browse-spec spec) nil buffer)
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(goto-char (point-max))
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(insert (cider-font-lock-as-clojure spec) "\n\n")
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(insert (cider-browse-spec--pprint-indented spec-form))
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(cider--make-back-forward-xrefs)
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(current-buffer))))
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(defun cider-browse-spec--browse (spec)
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"Browse SPEC."
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(cider-ensure-connected)
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(cider-ensure-op-supported "spec-form")
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(with-current-buffer (cider-popup-buffer cider-browse-spec-buffer 'select #'cider-browse-spec-view-mode 'ancillary)
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(setq-local cider-browse-spec--current-spec spec)
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(cider-browse-spec--draw-spec-buffer (current-buffer)
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spec
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(cider-sync-request:spec-form spec))
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(goto-char (point-min))
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(current-buffer)))
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(defun cider-browse-spec--browse-at (&optional pos)
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"View the definition of a spec.
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Optional argument POS is the position of a spec, defaulting to point. POS
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may also be a button, so this function can be used a the button's `action'
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property."
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(interactive)
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(let ((pos (or pos (point))))
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(when-let* ((spec (button-get pos 'spec-name)))
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(cider-browse-spec--browse spec))))
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;; Interactive Functions
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(defun cider-browse-spec--print-curr-spec-example ()
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"Generate and print an example of the current spec."
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(interactive)
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(cider-ensure-connected)
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(cider-ensure-op-supported "spec-example")
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(if-let* ((spec cider-browse-spec--current-spec))
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(if-let* ((example (cider-sync-request:spec-example spec)))
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(with-current-buffer (cider-popup-buffer cider-browse-spec-example-buffer 'select #'cider-browse-spec-example-mode 'ancillary)
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(setq-local cider-browse-spec--current-spec spec)
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(let ((inhibit-read-only t))
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(insert "Example of " (cider-font-lock-as-clojure spec))
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(insert "\n\n")
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(insert (cider-font-lock-as-clojure example))
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(goto-char (point-min))))
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(error (format "No example for spec %s" spec)))
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(error "No current spec")))
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(defun cider-browse-spec--example-revert-buffer-function (&rest _)
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"`revert-buffer' function for `cider-browse-spec-example-mode'.
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Generates a new example for the current spec."
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(cider-browse-spec--print-curr-spec-example))
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;;;###autoload
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(defun cider-browse-spec (spec)
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"Browse SPEC definition."
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(interactive (list (completing-read "Browse spec: "
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(cider-sync-request:spec-list)
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nil nil
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(cider-symbol-at-point))))
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(cider-browse-spec--browse spec))
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(defun cider-browse-spec-regex (regex)
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"Open the list of specs that matches REGEX in a popup buffer.
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Displays all specs when REGEX is nil."
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(cider-ensure-connected)
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(cider-ensure-op-supported "spec-list")
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(let ((filter-regex (or regex "")))
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(with-current-buffer (cider-popup-buffer cider-browse-spec-buffer 'select nil 'ancillary)
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(let ((specs (cider-sync-request:spec-list filter-regex)))
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(cider-browse-spec--draw-list-buffer (current-buffer)
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(if (string-empty-p filter-regex)
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"All specs in registry"
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(format "All specs matching regex `%s' in registry" filter-regex))
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specs)))))
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;;;###autoload
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(defun cider-browse-spec-all (&optional arg)
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"Open list of specs in a popup buffer.
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With a prefix argument ARG, prompts for a regexp to filter specs.
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No filter applied if the regexp is the empty string."
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(interactive "P")
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(cider-browse-spec-regex (if arg (read-string "Filter regex: ") "")))
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(provide 'cider-browse-spec)
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;;; cider-browse-spec.el ends here
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