| 1 | ;; Copyright (C) 2007 Vesa Karvonen |
| 2 | ;; |
| 3 | ;; MLton is released under a BSD-style license. |
| 4 | ;; See the file MLton-LICENSE for details. |
| 5 | |
| 6 | (require 'cl) |
| 7 | (require 'compat) |
| 8 | |
| 9 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 10 | ;; Utils |
| 11 | |
| 12 | (defun bg-build-cons-once (entry list) |
| 13 | (cons entry (remove* entry list :test (function equal)))) |
| 14 | |
| 15 | (defun bg-build-flatmap (fn list) |
| 16 | (apply (function append) (mapcar fn list))) |
| 17 | |
| 18 | (defun bg-build-remove-from-assoc (alist key) |
| 19 | (remove* |
| 20 | nil alist |
| 21 | :test (function |
| 22 | (lambda (_ key-value) |
| 23 | (equal key (car key-value)))))) |
| 24 | |
| 25 | (defun bg-build-replace-in-assoc (alist key value) |
| 26 | (cons (cons key value) |
| 27 | (bg-build-remove-from-assoc alist key))) |
| 28 | |
| 29 | (defun bg-build-assoc-cdr (key alist) |
| 30 | "Same as (cdr (assoc key alist)) except that doesn't attempt to call cdr |
| 31 | on nil." |
| 32 | (let ((key-value (assoc key alist))) |
| 33 | (when key-value |
| 34 | (cdr key-value)))) |
| 35 | |
| 36 | (defun bg-build-const (value) |
| 37 | "Returns a function that returns the given value." |
| 38 | (lexical-let ((value value)) |
| 39 | (lambda (&rest _) |
| 40 | value))) |
| 41 | |
| 42 | (defun bg-build-kill-current-buffer () |
| 43 | "Kills the current buffer." |
| 44 | (interactive) |
| 45 | (kill-buffer (current-buffer))) |
| 46 | |
| 47 | (defun bg-build-make-hash-table () |
| 48 | "Makes a hash table with `equal' semantics." |
| 49 | (make-hash-table :test 'equal :size 1)) |
| 50 | |
| 51 | (defun bg-build-point-at-current-line () |
| 52 | "Returns point at the beginning of the current line." |
| 53 | (save-excursion |
| 54 | (beginning-of-line) |
| 55 | (point))) |
| 56 | |
| 57 | (defun bg-build-current-line () |
| 58 | "Returns the current line number counting from 1." |
| 59 | (+ 1 (count-lines 1 (bg-build-point-at-current-line)))) |
| 60 | |
| 61 | (defun bg-build-time-to-double (time) |
| 62 | "Converts a time to a double." |
| 63 | (+ (* (car time) 65536.0) |
| 64 | (cadr time) |
| 65 | (if (cddr time) (* (caddr time) 1e-06) 0))) |
| 66 | |
| 67 | (defun bg-build-attr-newer? (attr1 attr2) |
| 68 | "Returns non-nil iff the modification time of `attr1' is later than the |
| 69 | modification time of `attr2'. Note that this also returns nil when either |
| 70 | one of the modification times is nil." |
| 71 | (and attr1 attr2 |
| 72 | (> (bg-build-time-to-double (nth 5 attr1)) |
| 73 | (bg-build-time-to-double (nth 5 attr2))))) |
| 74 | |
| 75 | (defun bg-build-pos-to-point (pos) |
| 76 | "Returns the value of point in the current buffer at the position given |
| 77 | as a (line . col) pair." |
| 78 | (save-excursion |
| 79 | (goto-line (car pos)) |
| 80 | (+ (point) (cdr pos)))) |
| 81 | |
| 82 | (defun bg-build-point-to-pos (point) |
| 83 | "Returns the position as a (line . col) pair corresponding to the |
| 84 | specified point in the current buffer." |
| 85 | (save-excursion |
| 86 | (goto-char point) |
| 87 | (beginning-of-line) |
| 88 | (let ((line (+ (count-lines 1 (point)) 1)) |
| 89 | (col (- point (point)))) |
| 90 | (cons line col)))) |
| 91 | |
| 92 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
| 93 | |
| 94 | (provide 'bg-build-util) |