scratch/edwin/midas.scm

66 lines
2.5 KiB
Scheme

#| -*-Scheme-*-
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This file is part of MIT/GNU Scheme.
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|#
;;;; Midas Mode
(define-command midas-mode
"Enter Midas mode."
()
(lambda () (set-current-major-mode! (ref-mode-object midas))))
(define-major-mode midas fundamental "Midas"
"Major mode for editing assembly code."
(lambda (buffer)
(local-set-variable! syntax-table midas-mode:syntax-table buffer)
(local-set-variable! comment-column 40 buffer)
(local-set-variable! comment-locator-hook lisp-comment-locate buffer)
(local-set-variable! comment-indent-hook midas-comment-indentation buffer)
(local-set-variable! comment-start ";" buffer)
(local-set-variable! comment-end "" buffer)
(standard-alternate-paragraph-style! buffer)
(local-set-variable! indent-line-procedure (ref-command insert-tab) buffer)
(local-set-variable! local-abbrev-table
(ref-variable midas-mode-abbrev-table buffer)
buffer)
(event-distributor/invoke! (ref-variable midas-mode-hook buffer) buffer)))
(define midas-mode:syntax-table (make-char-syntax-table))
(set-char-syntax! midas-mode:syntax-table #\; "< ")
(set-char-syntax! midas-mode:syntax-table #\newline "> ")
(set-char-syntax! midas-mode:syntax-table #\. "w ")
(set-char-syntax! midas-mode:syntax-table #\' "' ")
(set-char-syntax! midas-mode:syntax-table #\$ "' ")
(set-char-syntax! midas-mode:syntax-table #\% "' ")
(set-char-syntax! midas-mode:syntax-table #\# "' ")
(define (midas-comment-indentation mark)
(if (match-forward ";;;" mark)
0
(max (+ (mark-column (horizontal-space-start mark)) 1)
(ref-variable comment-column mark))))