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;; -*- Emacs-Lisp -*-
;;
;; php-electric.el --- electric submode for the php-mode
;;
;; Version: 1.0
;; Release-Date: Sunday 04 March 2007
;;
;; Copyright (C) 2007
;; by Nikolay V. Nemshilov aka St. <nemshilov dog gmail . com>
;;
;;
;; License
;;
;; 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 2
;; 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, write to the Free Software
;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
;;
;;
;; Features:
;; * autocompletion of the language contructions
;; such as if, for, foreach, etc blocks,
;;
;; * autocompletion of classes, interfaces and functions
;; definitions
;;
;; * autocompletion of the paired symbols, like [], (), "",''
;;
;;
;; Usage:
;; Nothing magical, just place the file in a directory where
;; Emacs can find it, and write
;;
;; (require 'php-electric)
;;
;; in your configuration files ~/.emacs or wherever you keep it.
;; Then you can switch on/off the mode by the following command
;;
;; M-x php-electric-mode <RET>
;;
;; If you like to have it switched on automatically, you should
;; put the command in your php-mode hook or create new one,
;; like that
;;
;; (add-hook 'php-mode-hook '(lambda () (php-electric-mode)))
;;
;; That's it.
;;
;;
;; Changelog:
;; Sunday 04 March 2007
;; The first version 1.0 has been came out.
;;
(defgroup php-electric nil
"Minor php-electric mode"
:group 'php)
;; list of keywords which expandible by the {} pair
(defconst php-electric-expandible-simple-re
"\\(try\\|else\\|do\\)")
;; list of keywords which expandible with the (){} construction
(defconst php-electric-expandible-as-struct-re
"\\(while\\|for\\|foreach\\|if\\|elseif\\|catch\\)")
;; list of keywords which expandible with the name(){} construction
(defconst php-electric-expandible-as-func-re
"\\(function\\)")
;; list of keywords which expandible with the name{} construction
(defconst php-electric-expandible-as-class-re
"\\(class\\|interface\\)")
;; list of the paired chars
(defvar php-electric-matching-delimeter-alist
'((?\[ . ?\])
(?\( . ?\))
(?\" . ?\")
(?\' . ?\')))
;; the minor-mode definition
(define-minor-mode php-electric-mode
"Minor electric-mode for the php-mode"
nil
"-El"
php-mode-map
(php-electric-keymap))
;; list of accessible keys
(defun php-electric-keymap()
(define-key php-mode-map " " 'php-electric-space)
(define-key php-mode-map "{" 'php-electric-curlies)
(define-key php-mode-map "(" 'php-electric-brackets)
(define-key php-mode-map "[" 'php-electric-matching-char)
(define-key php-mode-map "\"" 'php-electric-matching-char)
(define-key php-mode-map "\'" 'php-electric-matching-char))
;; handler for the spaces insertions
(defun php-electric-space(arg)
(interactive "P")
(self-insert-command (prefix-numeric-value arg))
(if (php-electric-is-code-at-point-p)
(if (php-electric-line-is-simple-expandible)
;; inserting just a pair of curleis
(progn
(insert "{")(php-electric-insert-new-line-and-statement-end))
(if (php-electric-line-is-expandible-as-struct)
;; inserting a structure definition
(progn
(if (not (char-equal ?\( (preceding-char)))
;; cmd () { - style construction
(progn
(insert "(")(set-register 98 (point-marker))(insert ") {"))
;; cmd( ){ - style construction
(progn
(insert " ")(set-register 98 (point-marker))(insert " ){")))
(php-electric-insert-new-line-and-statement-end)
(jump-to-register 98)(set-register 98 nil))
(if (php-electric-line-is-expandible-as-func)
;; inserting the function expanding
(save-excursion
(insert "(){")(php-electric-insert-new-line-and-statement-end))
(if (php-electric-line-is-expandible-as-class)
;; inserting the class expanding
(save-excursion
(insert "{")(php-electric-insert-new-line-and-statement-end))))))))
;; handler for the { chars
(defun php-electric-curlies(arg)
(interactive "P")
(self-insert-command (prefix-numeric-value arg))
(if (php-electric-is-code-at-point-p)
(progn
(php-electric-insert-new-line-and-statement-end))))
;; handler for the ( chars
(defun php-electric-brackets(arg)
(interactive "P")
(if (php-electric-is-code-at-point-p)
;; checking if it's a statement
(if (php-electric-line-is-expandible-as-struct)
(progn (php-electric-space arg))
(progn (php-electric-matching-char arg)))
(self-insert-command (prefix-numeric-value arg))))
;; handler for the paired chars, [], (), "", ''
(defun php-electric-matching-char(arg)
(interactive "P")
(self-insert-command (prefix-numeric-value arg))
(if (php-electric-is-code-at-point-p)
(save-excursion
(insert (cdr (assoc last-command-char
php-electric-matching-delimeter-alist))))))
;; checks if the current pointer situated in a piece of code
(defun php-electric-is-code-at-point-p()
(and php-electric-mode
(let* ((properties (text-properties-at (point))))
(and (null (memq 'font-lock-string-face properties))
(null (memq 'font-lock-comment-face properties))))))
;; checks if the current line expandible with a simple {} construction
(defun php-electric-line-is-simple-expandible()
(let* ((php-electric-expandible-simple-real-re
(concat php-electric-expandible-simple-re "\\s-$")))
(save-excursion
(backward-word 1)
(looking-at php-electric-expandible-simple-real-re))))
;; checks if the current line expandible with the (){} construction
(defun php-electric-line-is-expandible-as-struct()
(let* ((php-electric-expandible-as-struct-real-re
(concat php-electric-expandible-as-struct-re "[ ]*$"))
(php-electric-expandible-as-struct-with-bracket-re
(concat php-electric-expandible-as-struct-re "($")))
(save-excursion
(backward-word 1)
(or (looking-at php-electric-expandible-as-struct-real-re)
(looking-at php-electric-expandible-as-struct-with-bracket-re)))))
;; checks if the current line expandible with the name(){} construction
(defun php-electric-line-is-expandible-as-func()
(let* ((php-electric-expandible-as-func-real-re
(concat php-electric-expandible-as-func-re "\\s-$")))
(save-excursion
(backward-word 1)
(looking-at php-electric-expandible-as-func-real-re))))
;; checks if the current line expandible with the name{} construction
(defun php-electric-line-is-expandible-as-class()
(let* ((php-electric-expandible-as-class-real-re
(concat php-electric-expandible-as-class-re "\\s-$")))
(save-excursion
(backward-word 1)
(looking-at php-electric-expandible-as-class-real-re))))
;; "shortcut" to insert \n} construction
(defun php-electric-insert-new-line-and-statement-end()
(newline-and-indent)(set-register 99 (point-marker))
(insert "\n}")(indent-according-to-mode)
(jump-to-register 99)(set-register 99 nil))
(provide 'php-electric)
;; end of the file
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