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;;; easycrypt.el --- Major mode for EasyCrypt
;; --------------------------------------------------------------------
;; Copyright (c) - 2012--2016 - IMDEA Software Institute
;; Copyright (c) - 2012--2016 - Inria
;;
;; Distributed under the terms of the GPL-v3 license
;; --------------------------------------------------------------------
;;; Commentary:
;;
(require 'cl-lib) ;cl-every
(require 'proof)
(require 'easycrypt-syntax)
(require 'easycrypt-hooks)
(require 'easycrypt-abbrev)
;;; Code:
(add-to-list 'hs-special-modes-alist
'(easycrypt-mode "{" "}" "/[*/]" nil nil))
;; --------------------------------------------------------------------
(defun easycrypt-load-path-safep (path)
(and
(listp path)
(cl-every #'stringp path)))
;; --------------------------------------------------------------------
(defcustom easycrypt-prog-name "easycrypt"
"*Name of program to run EasyCrypt."
:type 'file
:group 'easycrypt)
(defcustom easycrypt-load-path nil
"Non-standard EasyCrypt library load path.
This list specifies the include path for EasyCrypt. The elements of
this list are strings."
:type '(repeat (string :tag "simple directory (-I)"))
:safe 'easycrypt-load-path-safep
:group 'easycrypt)
(defcustom easycrypt-web-page
"http://www.easycrypt.info/"
"URL of web page for EasyCrypt."
:type 'string
:group 'easycrypt-config)
;; --------------------------------------------------------------------
(defun easycrypt-option-of-load-path-entry (entry)
(list "-I" (expand-file-name entry)))
;; --------------------------------------------------------------------
(defun easycrypt-include-options ()
(let ((result nil))
(when easycrypt-load-path
(dolist (entry easycrypt-load-path)
(setq result (append result (easycrypt-option-of-load-path-entry entry)))))
result))
;; --------------------------------------------------------------------
(defun easycrypt-build-prog-args ()
(delete "-emacs" easycrypt-prog-args)
(push "-emacs" easycrypt-prog-args))
(easycrypt-build-prog-args)
;; --------------------------------------------------------------------
(defun easycrypt-prog-args ()
(append easycrypt-prog-args (easycrypt-include-options)))
;; --------------------------------------------------------------------
;; Generic mode
(defun easycrypt-config ()
"Configure Proof General scripting for EasyCrypt."
(easycrypt-init-output-syntax-table)
(setq proof-terminal-string easycrypt-terminal-string)
(setq proof-script-command-end-regexp easycrypt-command-end-regexp)
(setq proof-script-comment-start "(*"
proof-script-comment-end "*)")
;; For undo
(setq proof-find-and-forget-fn 'easycrypt-find-and-forget
proof-completed-proof-behaviour nil
proof-non-undoables-regexp easycrypt-non-undoables-regexp
proof-shell-restart-cmd "pragma restart. ")
(set (make-local-variable 'comment-quote-nested) nil)
;; For func-menu and finding goal...save regions
(setq proof-save-command-regexp easycrypt-proof-save-regexp
proof-really-save-command-p 'easycrypt-save-command-p
proof-save-with-hole-regexp nil
proof-goal-command-p 'easycrypt-goal-command-p
proof-goal-with-hole-regexp easycrypt-goal-command-regexp
proof-goal-with-hole-result 1)
(setq proof-goal-command "lemma %s: ."
proof-save-command "qed.")
(setq proof-prog-name easycrypt-prog-name
proof-assistant-home-page easycrypt-web-page)
; Options
(setq proof-three-window-enable t
proof-three-window-mode-policy (quote hybrid)
proof-auto-multiple-files t)
; Setting indents
(set (make-local-variable 'indent-tabs-mode) nil)
(setq proof-indent-enclose-offset (- proof-indent)
proof-indent-open-offset 0
proof-indent-close-offset 0
proof-indent-any-regexp easycrypt-indent-any-regexp
proof-indent-enclose-regexp easycrypt-indent-enclose-regexp
proof-indent-open-regexp easycrypt-indent-open-regexp
proof-indent-close-regexp easycrypt-indent-close-regexp)
; Silent/verbose mode for batch processing
(setq proof-shell-start-silent-cmd "pragma silent. "
proof-shell-stop-silent-cmd "pragma verbose. ")
; Ask for the current goal
(setq proof-showproof-command "pragma noop. ")
(easycrypt-init-syntax-table)
;; we can cope with nested comments
(set (make-local-variable 'comment-quote-nested) nil)
(setq proof-script-font-lock-keywords
easycrypt-font-lock-keywords))
(defun easycrypt-shell-config ()
"Configure Proof General shell for EasyCrypt."
(easycrypt-init-output-syntax-table)
(setq proof-shell-auto-terminate-commands easycrypt-terminal-string)
(setq proof-shell-eager-annotation-start
(concat "\\(?:^\\[W\\] *\\)\\|\\(?:" easycrypt-shell-proof-completed-regexp "\\)"))
(setq proof-shell-strip-crs-from-input nil)
(setq proof-shell-annotated-prompt-regexp "^\\[[0-9]+|\\sw+\\]>")
(setq proof-shell-clear-goals-regexp easycrypt-shell-proof-completed-regexp)
(setq proof-shell-proof-completed-regexp easycrypt-shell-proof-completed-regexp)
(setq proof-shell-error-regexp easycrypt-error-regexp)
(setq proof-shell-truncate-before-error nil)
(setq proof-shell-start-goals-regexp "^Current")
(setq proof-shell-end-goals-regexp nil) ; up to next prompt
(setq proof-shell-font-lock-keywords easycrypt-font-lock-keywords))
;; --------------------------------------------------------------------
;; Derived modes
(define-derived-mode easycrypt-mode proof-mode
"EasyCrypt script" nil
(easycrypt-config)
(proof-config-done))
(define-derived-mode easycrypt-shell-mode proof-shell-mode
"EasyCrypt shell" nil
(easycrypt-shell-config)
(proof-shell-config-done))
(define-derived-mode easycrypt-response-mode proof-response-mode
"EasyCrypt response" nil
(easycrypt-init-output-syntax-table)
(setq proof-response-font-lock-keywords
easycrypt-font-lock-keywords)
(proof-response-config-done))
(define-derived-mode easycrypt-goals-mode proof-goals-mode
"EasyCrypt goals" nil
(easycrypt-init-output-syntax-table)
(setq proof-goals-font-lock-keywords
easycrypt-font-lock-keywords)
(proof-goals-config-done))
(defun easycrypt-get-last-error-location ()
"Remove [error] in the error message and extract the position and
length of the error."
(proof-with-current-buffer-if-exists proof-response-buffer
(goto-char (point-max))
(when (re-search-backward "\\[error-\\([0-9]+\\)-\\([0-9]+\\)\\]" nil t)
(let* ((inhibit-read-only t)
(pos1 (string-to-number (match-string 1)))
(pos2 (string-to-number (match-string 2)))
(len (- pos2 pos1)))
(delete-region (match-beginning 0) (match-end 0))
(list pos1 len)))))
(defun easycrypt-advance-until-command ()
(while (proof-looking-at "\\s-") (forward-char 1)))
(defun easycrypt-highlight-error ()
"Use ‘easycrypt-get-last-error-location’ to know the position of the
error and then highlight in the script buffer."
(proof-with-current-buffer-if-exists proof-script-buffer
(let ((mtch (easycrypt-get-last-error-location)))
(when mtch
(let ((pos (car mtch))
(lgth (cadr mtch)))
(if (eq (proof-unprocessed-begin) (point-min))
(goto-char (proof-unprocessed-begin))
(goto-char (+ (proof-unprocessed-begin) 1)))
(easycrypt-advance-until-command)
(goto-char (+ (point) pos))
(span-make-self-removing-span
(point) (+ (point) lgth)
'face 'proof-script-highlight-error-face))))))
(defun easycrypt-highlight-error-hook ()
(easycrypt-highlight-error))
(defun easycrypt-redisplay-hook ()
(easycrypt-redisplay))
(add-hook 'proof-shell-handle-error-or-interrupt-hook
'easycrypt-highlight-error-hook t)
;; --------------------------------------------------------------------
;; Check mode related commands
(defun easycrypt-cmode-check ()
"Set EasyCrypt in check mode."
(interactive)
(proof-shell-invisible-command "pragma Proofs:check."))
(defun easycrypt-cmode-weak-check ()
"Set EasyCrypt in weak-check mode."
(interactive)
(proof-shell-invisible-command "pragma Proofs:weak."))
;; --------------------------------------------------------------------
(defun easycrypt-ask-do (do)
(let* ((cmd))
(setq cmd (read-string (format "Term for `%s': " do)))
(proof-shell-ready-prover)
(proof-shell-invisible-command (format " %s %s . " do cmd))))
;; --------------------------------------------------------------------
(defun easycrypt-Print ()
"Ask for a term and print its type."
(interactive)
(easycrypt-ask-do "print"))
;; --------------------------------------------------------------------
(defun easycrypt-Check ()
(easycrypt-Print))
;; --------------------------------------------------------------------
;; Key bindings
(define-key easycrypt-keymap "\C-p" 'easycrypt-Print)
(define-key easycrypt-goals-mode-map "\C-c\C-a\C-p" 'easycrypt-Print)
(define-key easycrypt-response-mode-map "\C-c\C-a\C-p" 'easycrypt-Print)
(define-key easycrypt-keymap "\C-c" 'easycrypt-Check)
(define-key easycrypt-goals-mode-map "\C-c\C-a\C-c" 'easycrypt-Check)
(define-key easycrypt-response-mode-map "\C-c\C-a\C-c" 'easycrypt-Check)
;; --------------------------------------------------------------------
;; 3-window pane layout hack
(add-hook
'proof-activate-scripting-hook
'(lambda () (when proof-three-window-enable (proof-layout-windows))))
;; --------------------------------------------------------------------
(provide 'easycrypt)
;;; easycrypt.el ends here
|
