+++ /dev/null
-;;; yaml-mode.el --- Major mode for editing YAML files
-
-;; Copyright (C) 2010-2014 Yoshiki Kurihara
-
-;; Author: Yoshiki Kurihara <clouderNOSPAMgmail.com>
-;; Marshall T. Vandegrift <llasramNOSPAMgmail.com>
-;; Maintainer: Vasilij Schneidermann <v.schneidermannNOSPAMgmail.com>
-;; Package-Requires: ((emacs "24.1"))
-;; Keywords: data yaml
-;; Package-Version: 20160220.340
-;; Version: 0.0.12
-
-;; This file is not part of 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 2, 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.
-
-;; 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.,
-;; 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-;;; Commentary:
-
-;; This is a major mode for editing files in the YAML data
-;; serialization format. It was initially developed by Yoshiki
-;; Kurihara and many features were added by Marshall Vandegrift. As
-;; YAML and Python share the fact that indentation determines
-;; structure, this mode provides indentation and indentation command
-;; behavior very similar to that of python-mode.
-
-;;; Installation:
-
-;; To install, just drop this file into a directory in your
-;; `load-path' and (optionally) byte-compile it. To automatically
-;; handle files ending in '.yml', add something like:
-;;
-;; (require 'yaml-mode)
-;; (add-to-list 'auto-mode-alist '("\\.yml$" . yaml-mode))
-;;
-;; to your .emacs file.
-;;
-;; Unlike python-mode, this mode follows the Emacs convention of not
-;; binding the ENTER key to `newline-and-indent'. To get this
-;; behavior, add the key definition to `yaml-mode-hook':
-;;
-;; (add-hook 'yaml-mode-hook
-;; '(lambda ()
-;; (define-key yaml-mode-map "\C-m" 'newline-and-indent)))
-
-;;; Known Bugs:
-
-;; YAML is easy to write but complex to parse, and this mode doesn't
-;; even really try. Indentation and highlighting will break on
-;; abnormally complicated structures.
-
-;;; Code:
-
-\f
-;; User definable variables
-
-;;;###autoload
-(defgroup yaml nil
- "Support for the YAML serialization format"
- :group 'languages
- :prefix "yaml-")
-
-(defcustom yaml-mode-hook nil
- "*Hook run by `yaml-mode'."
- :type 'hook
- :group 'yaml)
-
-(defcustom yaml-indent-offset 2
- "*Amount of offset per level of indentation."
- :type 'integer
- :group 'yaml)
-
-(defcustom yaml-backspace-function 'backward-delete-char-untabify
- "*Function called by `yaml-electric-backspace' when deleting backwards.
-It will receive one argument, the numeric prefix value."
- :type 'function
- :group 'yaml)
-
-(defcustom yaml-block-literal-search-lines 100
- "*Maximum number of lines to search for start of block literals."
- :type 'integer
- :group 'yaml)
-
-(defcustom yaml-block-literal-electric-alist
- '((?| . "") (?> . "-"))
- "*Characters for which to provide electric behavior.
-The association list key should be a key code and the associated value
-should be a string containing additional characters to insert when
-that key is pressed to begin a block literal."
- :type 'alist
- :group 'yaml)
-
-(defface yaml-tab-face
- '((((class color)) (:background "red" :foreground "red" :bold t))
- (t (:reverse-video t)))
- "Face to use for highlighting tabs in YAML files."
- :group 'faces
- :group 'yaml)
-
-(defcustom yaml-imenu-generic-expression
- '((nil "^\\(:?[a-zA-Z_-]+\\):" 1))
- "The imenu regex to parse an outline of the yaml file."
- :type 'string
- :group 'yaml)
-
-\f
-;; Constants
-
-(defconst yaml-mode-version "0.0.12" "Version of `yaml-mode'.")
-
-(defconst yaml-blank-line-re "^ *$"
- "Regexp matching a line containing only (valid) whitespace.")
-
-(defconst yaml-directive-re "^\\(?:--- \\)? *%\\(\\w+\\)"
- "Regexp matching a line contatining a YAML directive.")
-
-(defconst yaml-document-delimiter-re "^ *\\(?:---\\|[.][.][.]\\)"
- "Rexexp matching a YAML document delimiter line.")
-
-(defconst yaml-node-anchor-alias-re "[&*][a-zA-Z0-9_-]+"
- "Regexp matching a YAML node anchor or alias.")
-
-(defconst yaml-tag-re "!!?[^ \n]+"
- "Rexexp matching a YAML tag.")
-
-(defconst yaml-bare-scalar-re
- "\\(?:[^-:,#!\n{\\[ ]\\|[^#!\n{\\[ ]\\S-\\)[^#\n]*?"
- "Rexexp matching a YAML bare scalar.")
-
-(defconst yaml-hash-key-re
- (concat "\\(?:^\\(?:--- \\)?\\|{\\|\\(?:[-,] +\\)+\\) *"
- "\\(?:" yaml-tag-re " +\\)?"
- "\\(" yaml-bare-scalar-re "\\) *:"
- "\\(?: +\\|$\\)")
- "Regexp matching a single YAML hash key.")
-
-(defconst yaml-scalar-context-re
- (concat "\\(?:^\\(?:--- \\)?\\|{\\|\\(?: *[-,] +\\)+\\) *"
- "\\(?:" yaml-bare-scalar-re " *: \\)?")
- "Regexp indicating the begininng of a scalar context.")
-
-(defconst yaml-nested-map-re
- (concat ".*: *\\(?:&.*\\|{ *\\|" yaml-tag-re " *\\)?$")
- "Regexp matching a line beginning a YAML nested structure.")
-
-(defconst yaml-block-literal-base-re " *[>|][-+0-9]* *\\(?:\n\\|\\'\\)"
- "Regexp matching the substring start of a block literal.")
-
-(defconst yaml-block-literal-re
- (concat yaml-scalar-context-re
- "\\(?:" yaml-tag-re "\\)?"
- yaml-block-literal-base-re)
- "Regexp matching a line beginning a YAML block literal.")
-
-(defconst yaml-nested-sequence-re
- (concat "^\\(?:\\(?: *- +\\)+\\|\\(:? *-$\\)\\)"
- "\\(?:" yaml-bare-scalar-re " *:\\(?: +.*\\)?\\)?$")
- "Regexp matching a line containing one or more nested YAML sequences.")
-
-(defconst yaml-constant-scalars-re
- (concat "\\(?:^\\|\\(?::\\|-\\|,\\|{\\|\\[\\) +\\) *"
- (regexp-opt
- '("~" "null" "Null" "NULL"
- ".nan" ".NaN" ".NAN"
- ".inf" ".Inf" ".INF"
- "-.inf" "-.Inf" "-.INF"
- "y" "Y" "yes" "Yes" "YES" "n" "N" "no" "No" "NO"
- "true" "True" "TRUE" "false" "False" "FALSE"
- "on" "On" "ON" "off" "Off" "OFF") t)
- " *$")
- "Regexp matching certain scalar constants in scalar context.")
-
-\f
-;; Mode setup
-
-(defvar yaml-mode-map
- (let ((map (make-sparse-keymap)))
- (define-key map "|" 'yaml-electric-bar-and-angle)
- (define-key map ">" 'yaml-electric-bar-and-angle)
- (define-key map "-" 'yaml-electric-dash-and-dot)
- (define-key map "." 'yaml-electric-dash-and-dot)
- (define-key map [backspace] 'yaml-electric-backspace)
- map)
- "Keymap used in `yaml-mode' buffers.")
-
-(defvar yaml-mode-syntax-table
- (let ((syntax-table (make-syntax-table)))
- (modify-syntax-entry ?\' "\"" syntax-table)
- (modify-syntax-entry ?\" "\"" syntax-table)
- (modify-syntax-entry ?# "<" syntax-table)
- (modify-syntax-entry ?\n ">" syntax-table)
- (modify-syntax-entry ?\\ "\\" syntax-table)
- (modify-syntax-entry ?- "w" syntax-table)
- (modify-syntax-entry ?_ "_" syntax-table)
- (modify-syntax-entry ?\( "." syntax-table)
- (modify-syntax-entry ?\) "." syntax-table)
- (modify-syntax-entry ?\{ "(}" syntax-table)
- (modify-syntax-entry ?\} "){" syntax-table)
- (modify-syntax-entry ?\[ "(]" syntax-table)
- (modify-syntax-entry ?\] ")[" syntax-table)
- syntax-table)
- "Syntax table in use in `yaml-mode' buffers.")
-
-;;;###autoload
-(define-derived-mode yaml-mode text-mode "YAML"
- "Simple mode to edit YAML.
-
-\\{yaml-mode-map}"
- :syntax-table yaml-mode-syntax-table
- (set (make-local-variable 'comment-start) "# ")
- (set (make-local-variable 'comment-start-skip) "#+ *")
- (set (make-local-variable 'indent-line-function) 'yaml-indent-line)
- (set (make-local-variable 'indent-tabs-mode) nil)
- (set (make-local-variable 'fill-paragraph-function) 'yaml-fill-paragraph)
-
- (set (make-local-variable 'syntax-propertize-function)
- 'yaml-mode-syntax-propertize-function)
- (setq font-lock-defaults '(yaml-font-lock-keywords)))
-
-\f
-;; Font-lock support
-
-(defvar yaml-font-lock-keywords
- `((,yaml-constant-scalars-re . (1 font-lock-constant-face))
- (,yaml-tag-re . (0 font-lock-type-face))
- (,yaml-node-anchor-alias-re . (0 font-lock-function-name-face))
- (,yaml-hash-key-re . (1 font-lock-variable-name-face))
- (,yaml-document-delimiter-re . (0 font-lock-comment-face))
- (,yaml-directive-re . (1 font-lock-builtin-face))
- (yaml-font-lock-block-literals 0 font-lock-string-face)
- ("^[\t]+" 0 'yaml-tab-face t))
- "Additional expressions to highlight in YAML mode.")
-
-(defun yaml-mode-syntax-propertize-function (beg end)
- "Unhighlight foo#bar tokens between BEG and END."
- (save-excursion
- (goto-char beg)
- (while (search-forward "#" end t)
- (save-excursion
- (forward-char -1)
- ;; both ^# and [ \t]# are comments
- (when (and (not (bolp))
- (not (memq (preceding-char) '(?\s ?\t))))
- (put-text-property (point) (1+ (point))
- 'syntax-table (string-to-syntax "_")))))))
-
-(defun yaml-font-lock-block-literals (bound)
- "Find lines within block literals.
-Find the next line of the first (if any) block literal after point and
-prior to BOUND. Returns the beginning and end of the block literal
-line in the match data, as consumed by `font-lock-keywords' matcher
-functions. The function begins by searching backwards to determine
-whether or not the current line is within a block literal. This could
-be time-consuming in large buffers, so the number of lines searched is
-artificially limitted to the value of
-`yaml-block-literal-search-lines'."
- (if (eolp) (goto-char (1+ (point))))
- (unless (or (eobp) (>= (point) bound))
- (let ((begin (point))
- (end (min (1+ (point-at-eol)) bound)))
- (goto-char (point-at-bol))
- (while (and (looking-at yaml-blank-line-re) (not (bobp)))
- (forward-line -1))
- (let ((nlines yaml-block-literal-search-lines)
- (min-level (current-indentation)))
- (forward-line -1)
- (while (and (/= nlines 0)
- (/= min-level 0)
- (not (looking-at yaml-block-literal-re))
- (not (bobp)))
- (set 'nlines (1- nlines))
- (unless (looking-at yaml-blank-line-re)
- (set 'min-level (min min-level (current-indentation))))
- (forward-line -1))
- (cond
- ((and (< (current-indentation) min-level)
- (looking-at yaml-block-literal-re))
- (goto-char end) (set-match-data (list begin end)) t)
- ((progn
- (goto-char begin)
- (re-search-forward (concat yaml-block-literal-re
- " *\\(.*\\)\n")
- bound t))
- (set-match-data (nthcdr 2 (match-data))) t))))))
-
-\f
-;; Indentation and electric keys
-
-(defun yaml-compute-indentation ()
- "Calculate the maximum sensible indentation for the current line."
- (save-excursion
- (beginning-of-line)
- (if (looking-at yaml-document-delimiter-re) 0
- (forward-line -1)
- (while (and (looking-at yaml-blank-line-re)
- (> (point) (point-min)))
- (forward-line -1))
- (+ (current-indentation)
- (if (looking-at yaml-nested-map-re) yaml-indent-offset 0)
- (if (looking-at yaml-nested-sequence-re) yaml-indent-offset 0)
- (if (looking-at yaml-block-literal-re) yaml-indent-offset 0)))))
-
-(defun yaml-indent-line ()
- "Indent the current line.
-The first time this command is used, the line will be indented to the
-maximum sensible indentation. Each immediately subsequent usage will
-back-dent the line by `yaml-indent-offset' spaces. On reaching column
-0, it will cycle back to the maximum sensible indentation."
- (interactive "*")
- (let ((ci (current-indentation))
- (cc (current-column))
- (need (yaml-compute-indentation)))
- (save-excursion
- (beginning-of-line)
- (delete-horizontal-space)
- (if (and (equal last-command this-command) (/= ci 0))
- (indent-to (* (/ (- ci 1) yaml-indent-offset) yaml-indent-offset))
- (indent-to need)))
- (if (< (current-column) (current-indentation))
- (forward-to-indentation 0))))
-
-(defun yaml-electric-backspace (arg)
- "Delete characters or back-dent the current line.
-If invoked following only whitespace on a line, will back-dent to the
-immediately previous multiple of `yaml-indent-offset' spaces."
- (interactive "*p")
- (if (or (/= (current-indentation) (current-column)) (bolp))
- (funcall yaml-backspace-function arg)
- (let ((ci (current-column)))
- (beginning-of-line)
- (delete-horizontal-space)
- (indent-to (* (/ (- ci (* arg yaml-indent-offset))
- yaml-indent-offset)
- yaml-indent-offset)))))
-
-(defun yaml-electric-bar-and-angle (arg)
- "Insert the bound key and possibly begin a block literal.
-Inserts the bound key. If inserting the bound key causes the current
-line to match the initial line of a block literal, then inserts the
-matching string from `yaml-block-literal-electric-alist', a newline,
-and indents appropriately."
- (interactive "*P")
- (self-insert-command (prefix-numeric-value arg))
- (let ((extra-chars
- (assoc last-command-event
- yaml-block-literal-electric-alist)))
- (cond
- ((and extra-chars (not arg) (eolp)
- (save-excursion
- (beginning-of-line)
- (looking-at yaml-block-literal-re)))
- (insert (cdr extra-chars))
- (newline-and-indent)))))
-
-(defun yaml-electric-dash-and-dot (arg)
- "Insert the bound key and possibly de-dent line.
-Inserts the bound key. If inserting the bound key causes the current
-line to match a document delimiter, de-dent the line to the left
-margin."
- (interactive "*P")
- (self-insert-command (prefix-numeric-value arg))
- (save-excursion
- (beginning-of-line)
- (if (and (not arg) (looking-at yaml-document-delimiter-re))
- (delete-horizontal-space))))
-
-(defun yaml-narrow-to-block-literal ()
- "Narrow the buffer to block literal if the point is in it,
-otherwise do nothing."
- (interactive)
- (save-excursion
- (goto-char (point-at-bol))
- (while (and (looking-at-p yaml-blank-line-re) (not (bobp)))
- (forward-line -1))
- (let ((nlines yaml-block-literal-search-lines)
- (min-level (current-indentation))
- beg)
- (forward-line -1)
- (while (and (/= nlines 0)
- (/= min-level 0)
- (not (looking-at-p yaml-block-literal-re))
- (not (bobp)))
- (set 'nlines (1- nlines))
- (unless (looking-at-p yaml-blank-line-re)
- (set 'min-level (min min-level (current-indentation))))
- (forward-line -1))
- (when (and (< (current-indentation) min-level)
- (looking-at-p yaml-block-literal-re))
- (set 'min-level (current-indentation))
- (forward-line)
- (setq beg (point))
- (while (and (not (eobp))
- (or (looking-at-p yaml-blank-line-re)
- (> (current-indentation) min-level)))
- (forward-line))
- (narrow-to-region beg (point))))))
-
-(defun yaml-fill-paragraph (&optional justify region)
- "Fill paragraph.
-This behaves as `fill-paragraph' except that filling does not
-cross boundaries of block literals."
- (interactive "*P")
- (save-restriction
- (yaml-narrow-to-block-literal)
- (let ((fill-paragraph-function nil))
- (fill-paragraph justify region))))
-
-(defun yaml-set-imenu-generic-expression ()
- (make-local-variable 'imenu-generic-expression)
- (make-local-variable 'imenu-create-index-function)
- (setq imenu-create-index-function 'imenu-default-create-index-function)
- (setq imenu-generic-expression yaml-imenu-generic-expression))
-
-(add-hook 'yaml-mode-hook 'yaml-set-imenu-generic-expression)
-
-
-(defun yaml-mode-version ()
- "Diplay version of `yaml-mode'."
- (interactive)
- (message "yaml-mode %s" yaml-mode-version)
- yaml-mode-version)
-
-;;;###autoload
-(add-to-list 'auto-mode-alist '("\\.e?ya?ml$" . yaml-mode))
-
-(provide 'yaml-mode)
-
-;;; yaml-mode.el ends here
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