lean2/src/emacs/lean-mode.el

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;; Copyright (c) 2013, 2014 Microsoft Corporation. All rights reserved.
;; Released under Apache 2.0 license as described in the file LICENSE.
;;
;; Author: Leonardo de Moura
;; Soonho Kong
;;
(require 'cl-lib)
(require 'generic-x)
(require 'compile)
(require 'flymake)
(require 'dash)
(require 'dash-functional)
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(require 'lean-variable)
(require 'lean-util)
(require 'lean-settings)
(require 'lean-flycheck)
(require 'lean-input)
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(require 'lean-type)
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(require 'lean-tags)
(require 'lean-syntax)
(defun lean-compile-string (exe-name args file-name)
"Concatenate exe-name, args, and file-name"
(format "%s %s %s" exe-name args file-name))
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(defun lean-create-temp-in-system-tempdir (file-name prefix)
"Create a temp lean file and return its name"
(make-temp-file (or prefix "flymake") nil ".lean"))
(defun lean-execute (&optional arg)
"Execute Lean in the current buffer"
(interactive "sarg: ")
(let ((target-file-name
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(or
(buffer-file-name)
(flymake-init-create-temp-buffer-copy 'lean-create-temp-in-system-tempdir))))
(compile (lean-compile-string
(lean-get-executable lean-executable-name)
(or arg "")
target-file-name))))
(defun lean-std-exe ()
(interactive)
(lean-execute))
(defun lean-set-keys ()
(local-set-key "\C-c\C-x" 'lean-std-exe)
(local-set-key "\C-c\C-l" 'lean-std-exe)
(local-set-key "\C-c\C-o" 'lean-set-option)
(local-set-key "\C-c\C-e" 'lean-eval-cmd)
(local-set-key "\C-c\C-t" 'lean-eldoc-documentation-function)
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(local-set-key "\C-c\C-f" 'lean-fill-placeholder)
(local-set-key "\M-." 'lean-find-tag)
(local-set-key [tab] 'completion-at-point))
(define-abbrev-table 'lean-abbrev-table
'(("var" "variable")
("vars" "variables")
("def" "definition")
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("th" "theorem")))
;; ;; Roll back to generic-mode
;; (define-generic-mode
;; 'lean-mode ;; name of the mode to create
;; '("--") ;; comments start with
;; '("import" "abbreviation" "opaque_hint" "tactic_hint" "definition" "renaming" "inline" "hiding" "exposing" "parameter" "parameters" "proof" "qed" "conjecture" "hypothesis" "lemma" "corollary" "variable" "variables" "print" "theorem" "axiom" "inductive" "with" "structure" "universe" "alias" "help" "environment" "options" "precedence" "postfix" "prefix" "calc_trans" "calc_subst" "calc_refl" "infix" "infixl" "infixr" "notation" "eval" "check" "exit" "coercion" "end" "private" "using" "namespace" "builtin" "including" "instance" "section" "set_option" "add_rewrite" "extends") ;; some keywords
;; '(("\\_<\\(bool\\|int\\|nat\\|real\\|Prop\\|Type\\|\\|\\)\\_>" . 'font-lock-type-face)
;; ("\\_<\\(calc\\|have\\|obtains\\|show\\|by\\|in\\|let\\|forall\\|fun\\|exists\\|if\\|then\\|else\\|assume\\|take\\|obtain\\|from\\)\\_>" . font-lock-keyword-face)
;; ("\"[^\"]*\"" . 'font-lock-string-face)
;; ("\\(->\\|↔\\|/\\\\\\|==\\|\\\\/\\|[*+/<=>¬∧∨≠≤≥-]\\)" . 'font-lock-constant-face)
;; ("\\(λ\\|→\\|∃\\|∀\\|:\\|:=\\)" . font-lock-constant-face)
;; ("\\_<\\(\\b.*_tac\\|Cond\\|or_else\\|t\\(?:hen\\|ry\\)\\|when\\|assumption\\|apply\\|b\\(?:ack\\|eta\\)\\|done\\|exact\\)\\_>" . 'font-lock-constant-face)
;; ("\\_<\\(universe\\|inductive\\|theorem\\|axiom\\|lemma\\|hypothesis\\|abbreviation\\|definition\\|variable\\|parameter\\)\\_>[ \t\{\[]*\\([^ \t\n]*\\)" (2 'font-lock-function-name-face))
;; ("\\_<\\(variables\\|parameters\\)\\_>[ \t\(\{\[]*\\([^:]*\\)" (2 'font-lock-function-name-face))
;; ("\\(set_opaque\\|set_option\\)[ \t]*\\([^ \t\n]*\\)" (2 'font-lock-constant-face))
;; ("\\_<_\\_>" . 'font-lock-preprocessor-face)
;; ("\\_<sorry\\_>" . 'font-lock-warning-face)
;; ;;
;; )
;; '("\\.lean$") ;; files for which to activate this mode
;; '((lambda()
;; (set-input-method "Lean")
;; (set (make-local-variable 'lisp-indent-function)
;; 'common-lisp-indent-function)
;; (lean-set-keys)
;; (setq local-abbrev-table lean-abbrev-table)
;; (abbrev-mode 1)
;; (add-hook 'before-change-functions '
;; lean-before-change-function nil t)
;; (add-hook 'after-change-functions '
;; lean-after-change-function nil t)
;; ;; Draw a vertical line for rule-column
;; (when (and lean-rule-column
;; lean-show-rule-column-method)
;; (cl-case lean-show-rule-column-method
;; ('vline (require 'fill-column-indicator)
;; (setq fci-rule-column lean-rule-column)
;; (setq fci-rule-color lean-rule-color)
;; (add-hook 'lean-mode-hook 'fci-mode nil t))))
;; ;; Delete Trailing Whitespace
;; (if lean-delete-trailing-whitespace
;; (progn (require 'whitespace-cleanup-mode)
;; (add-hook 'lean-mode-hook 'whitespace-cleanup-mode nil t))
;; (remove-hook 'lean-mode-hook 'whitespace-cleanup-mode))
;; ;; eldoc
;; (set (make-local-variable 'eldoc-documentation-function)
;; 'lean-eldoc-documentation-function)
;; (eldoc-mode +1)
;; ;; flycheck
;; (when lean-flycheck-use
;; (lean-flycheck-init))
;; ;; company-mode
;; (when lean-company-use
;; (require 'company)
;; (company-mode t)
;; (add-to-list 'company-etags-modes 'lean-mode)
;; (set (make-local-variable 'company-backends) '(company-etags)))))
;; "A mode for Lean files" ;; doc string for this mode
;; )
(defconst lean-hooks-alist
'(
;; Handle events that may start automatic syntax checks
;; (after-save-hook . flycheck-handle-save)
(after-change-functions . lean-after-change-function)
(before-change-functions . lean-before-change-function)
;; ;; Handle events that may triggered pending deferred checks
;; (window-configuration-change-hook . flycheck-perform-deferred-syntax-check)
;; (post-command-hook . flycheck-perform-deferred-syntax-check)
;; ;; Teardown Flycheck whenever the buffer state is about to get lost, to
;; ;; clean up temporary files and directories.
;; (kill-buffer-hook . flycheck-teardown)
;; (change-major-mode-hook . flycheck-teardown)
;; (before-revert-hook . flycheck-teardown)
;; ;; Update the error list if necessary
;; (post-command-hook . flycheck-error-list-update-source)
;; (post-command-hook . flycheck-error-list-highlight-errors)
;; ;; Show or hide error popups after commands
;; (post-command-hook . flycheck-display-error-at-point-soon)
;; (post-command-hook . flycheck-hide-error-buffer)
;; ;; Immediately show error popups when navigating to an error
;; (next-error-hook . flycheck-display-error-at-point))
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)
"Hooks which lean-mode needs to hook in.
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The `car' of each pair is a hook variable, the `cdr' a function
to be added or removed from the hook variable if Flycheck mode is
enabled and disabled respectively.")
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(defun lean-mode-setup ()
"Default lean-mode setup"
;; Flycheck
(when lean-flycheck-use (lean-flycheck-turn-on))
;; Draw a vertical line for rule-column
(when (and lean-rule-column
lean-show-rule-column-method)
(cl-case lean-show-rule-column-method
('vline (require 'fill-column-indicator)
(setq fci-rule-column lean-rule-column)
(setq fci-rule-color lean-rule-color)
(fci-mode t))))
;; Delete Trailing Whitespace
(if lean-delete-trailing-whitespace
(progn (require 'whitespace-cleanup-mode)
(whitespace-cleanup-mode t))
(whitespace-cleanup-mode nil))
;; eldoc
(when lean-eldoc-use
(set (make-local-variable 'eldoc-documentation-function)
'lean-eldoc-documentation-function)
(eldoc-mode t)
(lean-eldoc-documentation-function))
;; company-mode
(when lean-company-use
(require 'company)
(company-mode t)
(set (make-local-variable 'company-backends) '(company-etags))))
;; Automode List
;;;###autoload
(define-derived-mode lean-mode prog-mode "Lean"
"Major mode for Lean"
:syntax-table lean-syntax-table
:abbrev-table lean-abbrev-table
:group 'lean
(set (make-local-variable 'comment-start-skip) "[-/]-[ \t]*")
(set (make-local-variable 'comment-end) "")
(set (make-local-variable 'comment-end-skip) "[ \t]*\\(-/\\|\\s>\\)")
(set (make-local-variable 'comment-padding) 1)
(set (make-local-variable 'comment-use-syntax) t)
(set (make-local-variable 'font-lock-defaults) lean-font-lock-defaults)
(set (make-local-variable 'tags-revert-without-query) t)
(set (make-local-variable 'indent-tabs-mode) nil)
(set-input-method "Lean")
(set (make-local-variable 'lisp-indent-function)
'common-lisp-indent-function)
(lean-set-keys)
(abbrev-mode 1)
(pcase-dolist (`(,hook . ,fn) lean-hooks-alist)
(add-hook hook fn nil 'local))
(lean-mode-setup))
;; Automatically use lean-mode for .lean files.
;;;###autoload
(push '("\\.lean$" . lean-mode) auto-mode-alist)
;; Use utf-8 encoding
;;;### autoload
(modify-coding-system-alist 'file "\\.lean\\'" 'utf-8)
;; Flycheck init
(when lean-flycheck-use
(require 'flycheck)
(eval-after-load 'flycheck
'(lean-flycheck-init)))
(provide 'lean-mode)