94 lines
3.6 KiB
EmacsLisp
94 lines
3.6 KiB
EmacsLisp
;;; origami-parsers.el --- Collection of parsers -*- lexical-binding: t -*-
|
|
|
|
;; Author: Greg Sexton <gregsexton@gmail.com>
|
|
;; Version: 1.0
|
|
;; Keywords: parsers
|
|
;; URL: https://github.com/gregsexton/
|
|
|
|
;; The MIT License (MIT)
|
|
|
|
;; Copyright (c) 2014 Greg Sexton
|
|
|
|
;; Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
;; of this software and associated documentation files (the "Software"), to deal
|
|
;; in the Software without restriction, including without limitation the rights
|
|
;; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
;; copies of the Software, and to permit persons to whom the Software is
|
|
;; furnished to do so, subject to the following conditions:
|
|
|
|
;; The above copyright notice and this permission notice shall be included in
|
|
;; all copies or substantial portions of the Software.
|
|
|
|
;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
;; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
;; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
;; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
;; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
;; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
;; THE SOFTWARE.
|
|
|
|
;;; Commentary:
|
|
|
|
;;; Code:
|
|
|
|
(require 'parser)
|
|
|
|
(defcustom origami-parser-alist
|
|
'((java-mode . origami-c-style-parser)
|
|
(c-mode . origami-c-style-parser)
|
|
(c++-mode . origami-c-style-parser)
|
|
(emacs-lisp-mode . origami-elisp-parser)
|
|
(lisp-interaction-mode . origami-elisp-parser))
|
|
"alist mapping major-mode to parser function."
|
|
:type 'hook
|
|
:group 'origami)
|
|
|
|
(defun origami-pair (start children end create)
|
|
;; TODO: make this a macro so I don't have to pass in the thunk?
|
|
"CHILDREN should be a zero-arg lambda -- a thunk -- returning a
|
|
parser to allow for recursive nesting of a parser. CREATE is a
|
|
function that should build state taking the beginning, end and
|
|
children of the pair."
|
|
(parser-do (begin <- start)
|
|
(children <- (funcall children))
|
|
(end <- end)
|
|
(parser-return (funcall create begin end children))))
|
|
|
|
(defun origami-c-style-parser (create)
|
|
(let ((pair (origami-pair (parser-char "{")
|
|
(lambda () (origami-c-style-parser create))
|
|
(parser-char "}")
|
|
create)))
|
|
(parser-0+ (parser-conj
|
|
(parser-do
|
|
(parser-drop-until-regex "[{}]")
|
|
(parser-1? pair))
|
|
pair))))
|
|
|
|
(defun origami-paren-parser (create)
|
|
(let ((pair (origami-pair (parser-char "(")
|
|
(lambda () (origami-paren-parser create))
|
|
(parser-char ")")
|
|
create)))
|
|
(parser-0+ (parser-conj
|
|
(parser-do
|
|
(parser-drop-until-regex "[()]")
|
|
(parser-1? pair))
|
|
pair))))
|
|
|
|
(defun origami-elisp-parser (create)
|
|
(let ((def-regex "(def\\w*\\s-*\\(\\s_\\|\\w\\)*"))
|
|
(let ((pair (origami-pair (parser-regex def-regex)
|
|
(lambda () (origami-paren-parser (lambda (&rest _) nil)))
|
|
(parser-char ")")
|
|
create)))
|
|
(parser-0+ (parser-conj
|
|
(parser-do
|
|
(parser-drop-until-regex (concat def-regex "\\|)"))
|
|
(parser-1? pair))
|
|
pair)))))
|
|
|
|
(provide 'origami-parsers)
|
|
|
|
;;; parser.el ends here
|