lean4-htt/lean4-mode/lean4-util.el

104 lines
3.4 KiB
EmacsLisp

;; Copyright (c) 2014 Microsoft Corporation. All rights reserved.
;; Released under Apache 2.0 license as described in the file LICENSE.
;;
;; Author: Soonho Kong
;;
(require 'cl-lib)
(require 'f)
(require 's)
(require 'dash)
(require 'dash-functional)
(defun lean4-setup-rootdir ()
(let ((root (executable-find lean4-executable-name)))
(when root
(setq lean4-rootdir (f-dirname (f-dirname root))))
lean4-rootdir))
(defun lean4-get-rootdir ()
(if lean4-rootdir
(let ((lean4-path (f-full (f-join lean4-rootdir "bin" lean4-executable-name))))
(unless (f-exists? lean4-path)
(error "Incorrect 'lean4-rootdir' value, path '%s' does not exist." lean4-path))
lean4-rootdir)
(or
(lean4-setup-rootdir)
(error
(concat "Lean was not found in the 'exec-path' and 'lean4-rootdir' is not defined. "
"Please set it via M-x customize-variable RET lean4-rootdir RET.")))))
(defun lean4-get-executable (exe-name)
"Return fullpath of lean executable"
(let ((lean4-bin-dir-name "bin"))
(f-full (f-join (lean4-get-rootdir) lean4-bin-dir-name exe-name))))
(defun lean4-line-offset (&optional pos)
"Return the byte-offset of `pos` or current position, counting from the
beginning of the line"
(interactive)
(let* ((pos (or pos (point)))
(bol-pos
(save-excursion
(goto-char pos)
(beginning-of-line)
(point))))
(- pos bol-pos)))
(defun lean4-pos-at-line-col (l c)
"Return the point of the given line and column."
;; http://emacs.stackexchange.com/a/8083
(save-excursion
(goto-char (point-min))
(forward-line (- l 1))
(move-to-column c)
(point)))
(defun lean4-whitespace-cleanup ()
(when lean4-delete-trailing-whitespace
(delete-trailing-whitespace)))
(defun lean4-in-comment-p ()
"t if a current point is inside of comment block
nil otherwise"
(nth 4 (syntax-ppss)))
;; The following function is a slightly modified version of
;; f--collect-entries written by Johan Andersson
;; The URL is at https://github.com/rejeep/f.el/blob/master/f.el#L416-L435
(defun lean4--collect-entries (path recursive)
(let (result
(entries
(-reject
(lambda (file)
(or
(equal (f-filename file) ".")
(equal (f-filename file) "..")))
(directory-files path t))))
;; The following line is the only modification that I made
;; It waits 0.0001 second for an event. This wait allows
;; wait-timeout function to check the timer and kill the execution
;; of this function.
(sit-for 0.0001)
(cond (recursive
(-map
(lambda (entry)
(if (f-file? entry)
(setq result (cons entry result))
(when (f-directory? entry)
(setq result (cons entry result))
(setq result (append result (lean4--collect-entries entry recursive))))))
entries))
(t (setq result entries)))
result))
;; The following function is a slightly modified version of
;; f-files function written by Johan Andersson The URL is at
;; https://github.com/rejeep/f.el/blob/master/f.el#L478-L481
(defun lean4-find-files (path &optional fn recursive)
"Find all files in PATH."
;; It calls lean4--collect-entries instead of f--collect-entries
(let ((files (-select 'f-file? (lean4--collect-entries path recursive))))
(if fn (-select fn files) files)))
(provide 'lean4-util)