You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
3.0 KiB
94 lines
3.0 KiB
;;; gsexp.el --- GraphQl as S-expressions -*- lexical-binding: t -*-
|
|
|
|
;; Copyright (C) 2016-2020 Jonas Bernoulli
|
|
|
|
;; Author: Jonas Bernoulli <jonas@bernoul.li>
|
|
;; Homepage: https://github.com/magit/ghub
|
|
;; Keywords: tools
|
|
|
|
;; This file is not part of GNU Emacs.
|
|
|
|
;; This file 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, or (at your option)
|
|
;; any later version.
|
|
|
|
;; This file 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.
|
|
|
|
;; For a copy of the GPL see https://www.gnu.org/licenses/gpl.txt.
|
|
|
|
;;; Commentary:
|
|
|
|
;; This library encodes S-expressions as GraphQl documents. Currently
|
|
;; it is rather incomplete and only intended for use by `ghub-graphql'
|
|
;; but I might fill the gaps and add documentation eventually. I am
|
|
;; not in a hurry though.
|
|
|
|
;;; Code:
|
|
|
|
(require 'cl-lib)
|
|
|
|
(defun gsexp-encode (document)
|
|
(gsexp--pp (gsexp--encode-field document)))
|
|
|
|
(defun gsexp--encode-field (field)
|
|
(cond
|
|
((stringp field)
|
|
field)
|
|
((symbolp field)
|
|
(symbol-name field))
|
|
((listp (car field))
|
|
(concat (format "%s: " (caar field))
|
|
(gsexp--encode-field (cons (cadar field)
|
|
(cdr field)))))
|
|
(t
|
|
(concat (symbol-name (pop field))
|
|
(and (vectorp (car field))
|
|
(format " (\n%s)"
|
|
(mapconcat #'gsexp--encode-argument
|
|
(append (pop field) nil)
|
|
",\n")))
|
|
(and field
|
|
(format " {\n%s\n}"
|
|
(mapconcat #'gsexp--encode-field field "\n")))))))
|
|
|
|
(cl-defun gsexp--encode-argument ((argument value))
|
|
(format "%s: %s" argument (gsexp--encode-value value)))
|
|
|
|
(defun gsexp--encode-value (value)
|
|
(cond
|
|
((numberp value)
|
|
(number-to-string value))
|
|
((symbolp value) ; including variables, enums, booleans and null
|
|
(symbol-name value))
|
|
((stringp value)
|
|
(prin1-to-string value))
|
|
((vectorp value)
|
|
(format "(%s)" (mapconcat #'gsexp--encode-value value "")))
|
|
((listp value)
|
|
(format "{%s}" (mapconcat
|
|
(pcase-lambda (`(,name ,value))
|
|
(format "%s: %s" name (gsexp--encode-value value)))
|
|
value ", ")))
|
|
(t (error "Invalid field value: %S" value))))
|
|
|
|
(defun gsexp--pp (string)
|
|
(with-temp-buffer
|
|
(save-excursion
|
|
(insert string))
|
|
(while (< (point) (point-max))
|
|
(unless (and (bolp) (eolp))
|
|
(save-excursion
|
|
(let ((level (car (syntax-ppss (point-at-bol)))))
|
|
(when (looking-at "\\s-*\\s)")
|
|
(cl-decf level))
|
|
(indent-line-to (* 2 level)))))
|
|
(forward-line 1))
|
|
(buffer-string)))
|
|
|
|
;;; _
|
|
(provide 'gsexp)
|
|
;;; gsexp.el ends here
|