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;; dafny-mode.el - GNU Emacs mode for Dafny
;; Adapted by Rustan Leino from Jean-Christophe FILLIATRE's GNU Emancs mode for Why
(defvar dafny-mode-hook nil)
(defvar dafny-mode-map nil
"Keymap for Dafny major mode")
(if dafny-mode-map nil
(setq dafny-mode-map (make-keymap))
(define-key dafny-mode-map "\C-c\C-c" 'dafny-run-boogie)
(define-key dafny-mode-map [(control return)] 'font-lock-fontify-buffer))
(setq auto-mode-alist
(append
'(("\\.dfy" . dafny-mode))
auto-mode-alist))
;; font-lock
(defun dafny-regexp-opt (l)
(concat "\\<" (concat (regexp-opt l t) "\\>")))
(defconst dafny-font-lock-keywords-1
(list
; comments have the form /* ... */
'("/\\*\\([^*]\\|\\*[^/]\\)*\\*/" . font-lock-comment-face)
; or // ...
'("//\\([^
]\\)*" . font-lock-comment-face)
`(,(dafny-regexp-opt '(
"class" "datatype" "function" "frame" "var" "method"
"returns" "requires" "ensures" "modifies" "reads" "free"
"invariant" "decreases"
)) . font-lock-builtin-face)
`(,(dafny-regexp-opt '(
"assert" "assume" "break" "call" "else" "havoc" "if" "label" "return" "while"
"old" "forall" "exists" "new" "foreach" "in" "this" "fresh" "use"
"match" "case" "false" "true" "null")) . font-lock-keyword-face)
`(,(dafny-regexp-opt '("bool" "int" "object" "set" "seq")) . font-lock-type-face)
)
"Minimal highlighting for Dafny mode")
(defvar dafny-font-lock-keywords dafny-font-lock-keywords-1
"Default highlighting for Dafny mode")
;; syntax
(defvar dafny-mode-syntax-table nil
"Syntax table for dafny-mode")
(defun dafny-create-syntax-table ()
(if dafny-mode-syntax-table
()
(setq dafny-mode-syntax-table (make-syntax-table))
(set-syntax-table dafny-mode-syntax-table)
(modify-syntax-entry ?' "w" dafny-mode-syntax-table)
(modify-syntax-entry ?_ "w" dafny-mode-syntax-table)))
;; menu
(require 'easymenu)
(defun dafny-menu ()
(easy-menu-define
dafny-mode-menu (list dafny-mode-map)
"Dafny Mode Menu."
'("Dafny"
["Run Boogie" dafny-run-boogie t]
"---"
["Recolor buffer" font-lock-fontify-buffer t]
"---"
))
(easy-menu-add dafny-mode-menu))
;; commands
(defun dafny-command-line (file)
(concat "boogie " file))
(defun dafny-run-boogie ()
"run Boogie to check the Dafny program"
(interactive)
(let ((f (buffer-name)))
(compile (dafny-command-line f))))
;; setting the mode
(defun dafny-mode ()
"Major mode for editing Dafny programs.
\\{dafny-mode-map}"
(interactive)
(kill-all-local-variables)
(dafny-create-syntax-table)
; hilight
(make-local-variable 'font-lock-defaults)
(setq font-lock-defaults '(dafny-font-lock-keywords))
; indentation
; (make-local-variable 'indent-line-function)
; (setq indent-line-function 'dafny-indent-line)
; menu
; providing the mode
(setq major-mode 'dafny-mode)
(setq mode-name "Dafny")
(use-local-map dafny-mode-map)
(font-lock-mode 1)
(dafny-menu)
(run-hooks 'dafny-mode-hook))
(provide 'dafny-mode)
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