my-emacs-d/elpa/helm-20160919.2219/helm-eval.el

205 lines
8.2 KiB
EmacsLisp
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; helm-eval.el --- eval expressions from helm. -*- lexical-binding: t -*-
;; Copyright (C) 2012 ~ 2016 Thierry Volpiatto <thierry.volpiatto@gmail.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/>.
;;; Code:
(require 'cl-lib)
(require 'helm)
(require 'helm-help)
(require 'eldoc)
(require 'edebug)
(defgroup helm-eval nil
"Eval related Applications and libraries for Helm."
:group 'helm)
(defcustom helm-eldoc-in-minibuffer-show-fn
'helm-show-info-in-mode-line
"A function to display eldoc info.
Should take one arg: the string to display."
:group 'helm-eval
:type 'symbol)
(defcustom helm-show-info-in-mode-line-delay 12
"Eldoc will show info in mode-line during this delay if user is idle."
:type 'integer
:group 'helm-eval)
;;; Eldoc compatibility between emacs-24 and emacs-25
;;
(if (require 'elisp-mode nil t) ; emacs-25
;; Maybe the eldoc functions have been
;; already aliased by eldoc-eval.
(cl-loop for (f . a) in '((eldoc-current-symbol .
elisp--current-symbol)
(eldoc-fnsym-in-current-sexp .
elisp--fnsym-in-current-sexp)
(eldoc-get-fnsym-args-string .
elisp-get-fnsym-args-string)
(eldoc-get-var-docstring .
elisp-get-var-docstring))
unless (fboundp f)
do (defalias f a))
;; Emacs-24.
(declare-function eldoc-current-symbol "eldoc")
(declare-function eldoc-get-fnsym-args-string "eldoc" (sym &optional index))
(declare-function eldoc-get-var-docstring "eldoc" (sym))
(declare-function eldoc-fnsym-in-current-sexp "eldoc"))
;;; Evaluation Result
;;
;;
;; Internal
(defvar helm-eldoc-active-minibuffers-list nil)
(defvar helm-eval-expression-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map helm-map)
(define-key map (kbd "<C-return>") 'helm-eval-new-line-and-indent)
(define-key map (kbd "<M-tab>") 'lisp-indent-line)
(define-key map (kbd "<C-tab>") 'helm-lisp-completion-at-point)
(define-key map (kbd "C-p") 'previous-line)
(define-key map (kbd "C-n") 'next-line)
(define-key map (kbd "<up>") 'previous-line)
(define-key map (kbd "<down>") 'next-line)
(define-key map (kbd "<right>") 'forward-char)
(define-key map (kbd "<left>") 'backward-char)
map))
(defun helm-build-evaluation-result-source ()
(helm-build-dummy-source "Evaluation Result"
:multiline t
:mode-line "C-RET: nl-and-indent, M-tab: reindent, C-tab:complete, C-p/n: next/prec-line."
:filtered-candidate-transformer (lambda (_candidates _source)
(list
(condition-case nil
(with-helm-current-buffer
(pp-to-string
(if edebug-active
(edebug-eval-expression
(read helm-pattern))
(eval (read helm-pattern)))))
(error "Error"))))
:nohighlight t
:action '(("Copy result to kill-ring" . (lambda (candidate)
(kill-new
(replace-regexp-in-string
"\n" "" candidate))
(message "Result copied to kill-ring")))
("copy sexp to kill-ring" . (lambda (_candidate)
(kill-new helm-input)
(message "Sexp copied to kill-ring"))))))
(defun helm-eval-new-line-and-indent ()
(interactive)
(newline) (lisp-indent-line))
(defun helm-eldoc-store-minibuffer ()
"Store minibuffer buffer name in `helm-eldoc-active-minibuffers-list'."
(with-selected-window (minibuffer-window)
(push (current-buffer) helm-eldoc-active-minibuffers-list)))
(defun helm-eldoc-show-in-eval ()
"Return eldoc in mode-line for current minibuffer input."
(let ((buf (window-buffer (active-minibuffer-window))))
(condition-case err
(when (member buf helm-eldoc-active-minibuffers-list)
(with-current-buffer buf
(let* ((sym (save-excursion
(unless (looking-back ")\\|\"" (1- (point)))
(forward-char -1))
(eldoc-current-symbol)))
(info-fn (eldoc-fnsym-in-current-sexp))
(doc (or (eldoc-get-var-docstring sym)
(eldoc-get-fnsym-args-string
(car info-fn) (cadr info-fn)))))
(when doc (funcall helm-eldoc-in-minibuffer-show-fn doc)))))
(error (message "Eldoc in minibuffer error: %S" err) nil))))
(defun helm-show-info-in-mode-line (str)
"Display string STR in mode-line."
(save-selected-window
(with-current-buffer helm-buffer
(let ((mode-line-format (concat " " str)))
(force-mode-line-update)
(sit-for helm-show-info-in-mode-line-delay))
(force-mode-line-update))))
;;; Calculation Result
;;
;;
(defvar helm-source-calculation-result
(helm-build-dummy-source "Calculation Result"
:filtered-candidate-transformer (lambda (_candidates _source)
(list
(condition-case nil
(calc-eval helm-pattern)
(error "error"))))
:nohighlight t
:action '(("Copy result to kill-ring" . (lambda (candidate)
(kill-new candidate)
(message "Result \"%s\" copied to kill-ring"
candidate)))
("Copy operation to kill-ring" . (lambda (_candidate)
(kill-new helm-input)
(message "Calculation copied to kill-ring"))))))
;;;###autoload
(defun helm-eval-expression (arg)
"Preconfigured helm for `helm-source-evaluation-result'."
(interactive "P")
(helm :sources (helm-build-evaluation-result-source)
:input (when arg (thing-at-point 'sexp))
:buffer "*helm eval*"
:echo-input-in-header-line nil
:history 'read-expression-history
:keymap helm-eval-expression-map))
(defvar eldoc-idle-delay)
;;;###autoload
(defun helm-eval-expression-with-eldoc ()
"Preconfigured helm for `helm-source-evaluation-result' with `eldoc' support. "
(interactive)
(let ((timer (run-with-idle-timer
eldoc-idle-delay 'repeat
'helm-eldoc-show-in-eval)))
(unwind-protect
(minibuffer-with-setup-hook
'helm-eldoc-store-minibuffer
(call-interactively 'helm-eval-expression))
(and timer (cancel-timer timer))
(setq helm-eldoc-active-minibuffers-list
(cdr helm-eldoc-active-minibuffers-list)))))
;;;###autoload
(defun helm-calcul-expression ()
"Preconfigured helm for `helm-source-calculation-result'."
(interactive)
(helm :sources 'helm-source-calculation-result
:buffer "*helm calcul*"))
(provide 'helm-eval)
;; Local Variables:
;; byte-compile-warnings: (not cl-functions obsolete)
;; coding: utf-8
;; indent-tabs-mode: nil
;; End:
;;; helm-eval.el ends here