| commit | author | age | ||
| 5cb5f7 | 1 | ;;; helm-eval.el --- eval expressions from helm. -*- lexical-binding: t -*- |
| C | 2 | |
| 3 | ;; Copyright (C) 2012 ~ 2018 Thierry Volpiatto <thierry.volpiatto@gmail.com> | |
| 4 | ||
| 5 | ;; This program is free software; you can redistribute it and/or modify | |
| 6 | ;; it under the terms of the GNU General Public License as published by | |
| 7 | ;; the Free Software Foundation, either version 3 of the License, or | |
| 8 | ;; (at your option) any later version. | |
| 9 | ||
| 10 | ;; This program is distributed in the hope that it will be useful, | |
| 11 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | ;; GNU General Public License for more details. | |
| 14 | ||
| 15 | ;; You should have received a copy of the GNU General Public License | |
| 16 | ;; along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 | ||
| 18 | ;;; Code: | |
| 19 | (require 'cl-lib) | |
| 20 | (require 'helm) | |
| 21 | (require 'helm-help) | |
| 22 | (require 'eldoc) | |
| 23 | (require 'edebug) | |
| 24 | ||
| 25 | ||
| 26 | (defgroup helm-eval nil | |
| 27 | "Eval related Applications and libraries for Helm." | |
| 28 | :group 'helm) | |
| 29 | ||
| 30 | (defcustom helm-eldoc-in-minibuffer-show-fn | |
| 31 | 'helm-show-info-in-mode-line | |
| 32 | "A function to display eldoc info. | |
| 33 | Should take one arg: the string to display." | |
| 34 | :group 'helm-eval | |
| 35 | :type 'symbol) | |
| 36 | ||
| 37 | (defcustom helm-show-info-in-mode-line-delay 12 | |
| 38 | "Eldoc will show info in mode-line during this delay if user is idle." | |
| 39 | :type 'integer | |
| 40 | :group 'helm-eval) | |
| 41 | ||
| 42 | ||
| 43 | ;;; Eldoc compatibility between emacs-24 and emacs-25 | |
| 44 | ;; | |
| 45 | (if (require 'elisp-mode nil t) ; emacs-25 | |
| 46 | ;; Maybe the eldoc functions have been | |
| 47 | ;; already aliased by eldoc-eval. | |
| 48 | (cl-loop for (f . a) in '((eldoc-current-symbol . | |
| 49 | elisp--current-symbol) | |
| 50 | (eldoc-fnsym-in-current-sexp . | |
| 51 | elisp--fnsym-in-current-sexp) | |
| 52 | (eldoc-get-fnsym-args-string . | |
| 53 | elisp-get-fnsym-args-string) | |
| 54 | (eldoc-get-var-docstring . | |
| 55 | elisp-get-var-docstring)) | |
| 56 | unless (fboundp f) | |
| 57 | do (defalias f a)) | |
| 58 | ;; Emacs-24. | |
| 59 | (declare-function eldoc-current-symbol "eldoc") | |
| 60 | (declare-function eldoc-get-fnsym-args-string "eldoc" (sym &optional index)) | |
| 61 | (declare-function eldoc-get-var-docstring "eldoc" (sym)) | |
| 62 | (declare-function eldoc-fnsym-in-current-sexp "eldoc")) | |
| 63 | ||
| 64 | ;;; Evaluation Result | |
| 65 | ;; | |
| 66 | ;; | |
| 67 | ;; Internal | |
| 68 | (defvar helm-eldoc-active-minibuffers-list nil) | |
| 69 | ||
| 70 | (defvar helm-eval-expression-map | |
| 71 | (let ((map (make-sparse-keymap))) | |
| 72 | (set-keymap-parent map helm-map) | |
| 73 | (define-key map (kbd "<C-return>") 'helm-eval-new-line-and-indent) | |
| 74 | (define-key map (kbd "<M-tab>") 'lisp-indent-line) | |
| 75 | (define-key map (kbd "<C-tab>") 'helm-lisp-completion-at-point) | |
| 76 | (define-key map (kbd "C-p") 'previous-line) | |
| 77 | (define-key map (kbd "C-n") 'next-line) | |
| 78 | (define-key map (kbd "<up>") 'previous-line) | |
| 79 | (define-key map (kbd "<down>") 'next-line) | |
| 80 | (define-key map (kbd "<right>") 'forward-char) | |
| 81 | (define-key map (kbd "<left>") 'backward-char) | |
| 82 | map)) | |
| 83 | ||
| 84 | (defun helm-build-evaluation-result-source () | |
| 85 | (helm-build-dummy-source "Evaluation Result" | |
| 86 | :multiline t | |
| 87 | :mode-line "C-RET: nl-and-indent, M-tab: reindent, C-tab:complete, C-p/n: next/prec-line." | |
| 88 | :filtered-candidate-transformer (lambda (_candidates _source) | |
| 89 | (list | |
| 90 | (condition-case nil | |
| 91 | (with-helm-current-buffer | |
| 92 | (pp-to-string | |
| 93 | (if edebug-active | |
| 94 | (edebug-eval-expression | |
| 95 | (read helm-pattern)) | |
| 96 | (eval (read helm-pattern))))) | |
| 97 | (error "Error")))) | |
| 98 | :nohighlight t | |
| 99 | :keymap helm-eval-expression-map | |
| 100 | :action '(("Copy result to kill-ring" . (lambda (candidate) | |
| 101 | (kill-new | |
| 102 | (replace-regexp-in-string | |
| 103 | "\n" "" candidate)) | |
| 104 | (message "Result copied to kill-ring"))) | |
| 105 | ("copy sexp to kill-ring" . (lambda (_candidate) | |
| 106 | (kill-new helm-input) | |
| 107 | (message "Sexp copied to kill-ring")))))) | |
| 108 | ||
| 109 | (defun helm-eval-new-line-and-indent () | |
| 110 | (interactive) | |
| 111 | (newline) (lisp-indent-line)) | |
| 112 | ||
| 113 | (defun helm-eldoc-store-minibuffer () | |
| 114 | "Store minibuffer buffer name in `helm-eldoc-active-minibuffers-list'." | |
| 115 | (with-selected-window (minibuffer-window) | |
| 116 | (push (current-buffer) helm-eldoc-active-minibuffers-list))) | |
| 117 | ||
| 118 | (defun helm-eldoc-show-in-eval () | |
| 119 | "Return eldoc in mode-line for current minibuffer input." | |
| 120 | (let ((buf (window-buffer (active-minibuffer-window)))) | |
| 121 | (condition-case err | |
| 122 | (when (member buf helm-eldoc-active-minibuffers-list) | |
| 123 | (with-current-buffer buf | |
| 124 | (let* ((sym (save-excursion | |
| 125 | (unless (looking-back ")\\|\"" (1- (point))) | |
| 126 | (forward-char -1)) | |
| 127 | (eldoc-current-symbol))) | |
| 128 | (info-fn (eldoc-fnsym-in-current-sexp)) | |
| 129 | (doc (or (eldoc-get-var-docstring sym) | |
| 130 | (eldoc-get-fnsym-args-string | |
| 131 | (car info-fn) (cadr info-fn))))) | |
| 132 | (when doc (funcall helm-eldoc-in-minibuffer-show-fn doc))))) | |
| 133 | (error (message "Eldoc in minibuffer error: %S" err) nil)))) | |
| 134 | ||
| 135 | (defun helm-show-info-in-mode-line (str) | |
| 136 | "Display string STR in mode-line." | |
| 137 | (save-selected-window | |
| 138 | (with-current-buffer helm-buffer | |
| 139 | (let ((mode-line-format (concat " " str))) | |
| 140 | (force-mode-line-update) | |
| 141 | (sit-for helm-show-info-in-mode-line-delay)) | |
| 142 | (force-mode-line-update)))) | |
| 143 | ||
| 144 | ;;; Calculation Result | |
| 145 | ;; | |
| 146 | ;; | |
| 147 | (defvar helm-source-calculation-result | |
| 148 | (helm-build-dummy-source "Calculation Result" | |
| 149 | :filtered-candidate-transformer (lambda (_candidates _source) | |
| 150 | (list | |
| 151 | (condition-case nil | |
| 152 | (calc-eval helm-pattern) | |
| 153 | (error "error")))) | |
| 154 | :nohighlight t | |
| 155 | :action '(("Copy result to kill-ring" . (lambda (candidate) | |
| 156 | (kill-new candidate) | |
| 157 | (message "Result \"%s\" copied to kill-ring" | |
| 158 | candidate))) | |
| 159 | ("Copy operation to kill-ring" . (lambda (_candidate) | |
| 160 | (kill-new helm-input) | |
| 161 | (message "Calculation copied to kill-ring")))))) | |
| 162 | ||
| 163 | ;;;###autoload | |
| 164 | (defun helm-eval-expression (arg) | |
| 165 | "Preconfigured helm for `helm-source-evaluation-result'." | |
| 166 | (interactive "P") | |
| 167 | (helm :sources (helm-build-evaluation-result-source) | |
| 168 | :input (when arg (thing-at-point 'sexp)) | |
| 169 | :buffer "*helm eval*" | |
| 170 | :echo-input-in-header-line nil | |
| 171 | :history 'read-expression-history)) | |
| 172 | ||
| 173 | (defvar eldoc-idle-delay) | |
| 174 | ;;;###autoload | |
| 175 | (defun helm-eval-expression-with-eldoc () | |
| 176 | "Preconfigured helm for `helm-source-evaluation-result' with `eldoc' support. " | |
| 177 | (interactive) | |
| 178 | (let ((timer (run-with-idle-timer | |
| 179 | eldoc-idle-delay 'repeat | |
| 180 | 'helm-eldoc-show-in-eval))) | |
| 181 | (unwind-protect | |
| 182 | (minibuffer-with-setup-hook | |
| 183 | 'helm-eldoc-store-minibuffer | |
| 184 | (call-interactively 'helm-eval-expression)) | |
| 185 | (and timer (cancel-timer timer)) | |
| 186 | (setq helm-eldoc-active-minibuffers-list | |
| 187 | (cdr helm-eldoc-active-minibuffers-list))))) | |
| 188 | ||
| 189 | ;;;###autoload | |
| 190 | (defun helm-calcul-expression () | |
| 191 | "Preconfigured helm for `helm-source-calculation-result'." | |
| 192 | (interactive) | |
| 193 | (helm :sources 'helm-source-calculation-result | |
| 194 | :buffer "*helm calcul*")) | |
| 195 | ||
| 196 | (provide 'helm-eval) | |
| 197 | ||
| 198 | ;; Local Variables: | |
| 199 | ;; byte-compile-warnings: (not obsolete) | |
| 200 | ;; coding: utf-8 | |
| 201 | ;; indent-tabs-mode: nil | |
| 202 | ;; End: | |
| 203 | ||
| 204 | ;;; helm-eval.el ends here | |
