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art-fhicl-mode.el
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art-fhicl-mode.el
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;;; art-fhicl-mode.el --- Major mode for editing FHiCL files used with
;;; the art framework
;; Copyright (C) 2014 Fermilab
;; Author: Kyle Knoepfel <[email protected]>
;;
;; Keywords: art fhicl framework
;; Version: 0.5.0
;; 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 GNU Emacs; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;;
;; This is a major mode for editing files FHiCL files that are used
;; with the art framework. It has rudimentary commenting features and
;; indentation support. The syntax highlighting is done such that
;; strings reserved to/used by FHiCL or art are placed in either:
;;
;; constant-face,
;; keyword-face,
;; function-name-face, or
;; type-face
;;
;; depending on the priority of the string (according to the author's
;; understanding of FHiCL and art). Very little attempt has been made
;; to optimize the syntax below, due to the author's very limited
;; knowledge of elisp.
;;
;; This mode was developed with help from Andrei Gaponenko (Fermilab).
;;; Installation:
;;
;; The following must be added to your .emacs file:
;;
;; (load "art-fhicl-mode")
;;; Known Bugs:
;;
;; (1) The highlighting for "process_name", "source", "services",
;; "physics", and "outputs" is keyword-face ONLY if these identifiers
;; occur at the start of a line. If the indentation facility is
;; enabled, this happens automatically.
(defvar art-fhicl-mode-hook nil)
;; define several classes of keywords
(setq art-fhicl-reserved '("true"
"false"
"infinity"))
;; create regex string for each class of keywords
(setq art-fhicl-reserved-regexp (regexp-opt art-fhicl-reserved 'words))
;; create the list for font-lock.
(setq art-fhicl-font-lock-keywords
`(
;; comment-face
(,"\\(?:^\\|\\s-*\\)\\(#\\|//\\).*$" . (0 font-lock-comment-face t))
;; keyword-face
(,"^\\(process_name\\)[[:space:]]*):" . (1 font-lock-keyword-face))
(,"^\\(source\\)[[:space:]]*:" . (1 font-lock-keyword-face))
(,"^\\(services\\)[[:space:]]*:" .(1 font-lock-keyword-face))
(,"^\\(physics\\)[[:space:]]*:" . (1 font-lock-keyword-face))
(,"^\\(outputs\\)[[:space:]]*:" . (1 font-lock-keyword-face))
(,"^[[:space:]]+\\(trigger_paths\\)[[:space:]]*:*" . (1 font-lock-keyword-face))
(,"^[[:space:]]+\\(end_paths\\)[[:space:]]*:" . (1 font-lock-keyword-face))
;; function-name-face
(,"^[[:space:]]+\\(producers\\)[[:space:]]*:" . (1 font-lock-function-name-face))
(,"^[[:space:]]+\\(analyzers\\)[[:space:]]*:" . (1 font-lock-function-name-face))
(,"^[[:space:]]+\\(filters\\)[[:space:]]*:" . (1 font-lock-function-name-face))
;; builtin-face
(,"^\\(^#include[[:space:]]\\)\\(\".*\"\\)" (1 font-lock-builtin-face t) (2 font-lock-string-face t) )
(,"^BEGIN_PROLOG[[:space:]]" . font-lock-builtin-face)
(,"^END_PROLOG[[:space:]]" . font-lock-builtin-face)
;; constant-face
(,"\\(@local\\|@sequence\\|@table\\|@id\\)::" . (1 font-lock-constant-face))
(,"\\(?:@nil\\|@erase\\)" . font-lock-constant-face)
(,art-fhicl-reserved-regexp . font-lock-constant-face)
;; variable-name-face
(,"\\(^\\|[[:space:]]\\)\\([[:alnum:]\\._]+[[:space:]]*\\)\\(\\[[0-9]*\\]\\)*[[:space:]]*:"
(2 font-lock-variable-name-face ))))
;; syntax table
(defvar art-fhicl-syntax-table nil "Syntax table for `art-fhicl-mode'.")
(setq art-fhicl-syntax-table
(let ((synTable (make-syntax-table)))
synTable))
;; indentation
(defvar art-fhicl-indent-offset 2
"*Indentation offset for `art-fhicl-mode'.")
(defun art-fhicl-indent-line()
"Indent current line for `art-fhicl-mode'."
(interactive)
(let ((indent-col 0))
(save-excursion
(beginning-of-line)
(condition-case nil
(while t
(backward-up-list 1)
(when (looking-at "[[{]")
(setq indent-col (+ indent-col art-fhicl-indent-offset))))
(error nil)))
(save-excursion
(back-to-indentation)
(when (and (looking-at "[]}]") (>= indent-col art-fhicl-indent-offset))
(setq indent-col (- indent-col art-fhicl-indent-offset))))
(indent-line-to indent-col)))
;; define the major mode.
(define-derived-mode art-fhicl-mode fundamental-mode
"art-fhicl-mode is a major mode for editing language art-fhicl."
:syntax-table art-fhicl-syntax-table
(make-local-variable 'art-fhicl-indent-offset)
(set (make-local-variable 'indent-line-function) 'art-fhicl-indent-line)
(setq font-lock-defaults '(art-fhicl-font-lock-keywords))
(setq major-mode 'art-fhicl-mode)
(setq mode-name "art-fhicl")
(run-hooks 'art-fhicl-mode-hook))
;; associate .fcl files with art-fhicl-mode
(add-to-list 'auto-mode-alist '("\\.fcl$" . art-fhicl-mode))
(provide 'art-fhicl-mode)