96 lines
3.2 KiB
EmacsLisp
96 lines
3.2 KiB
EmacsLisp
;; -*- lexical-binding: t -*-
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;;
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;;; lean4-info.el --- Emacs mode for Lean theorem prover
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;;
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;; Copyright (c) 2016 Gabriel Ebner. All rights reserved.
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;;
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;; Author: Gabriel Ebner <gebner@gebner.org>
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;; Maintainer: Gabriel Ebner <gebner@gebner.org>
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;; Created: Oct 29, 2016
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;; Keywords: languages
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;; Version: 0.1
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;; URL: https://github.com/leanprover/lean/blob/master/src/emacs
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;;
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;; Released under Apache 2.0 license as described in the file LICENSE.
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;;
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(require 'lean4-syntax)
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(require 'lsp-protocol)
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;; Lean Info Mode (for "*lean4-info*" buffer)
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;; Automode List
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;;;###autoload
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(define-derived-mode lean4-info-mode prog-mode "Lean-Info"
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"Major mode for Lean Info Buffer"
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:syntax-table lean4-syntax-table
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:group 'lean
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(set (make-local-variable 'font-lock-defaults) lean4-info-font-lock-defaults)
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(set (make-local-variable 'indent-tabs-mode) nil)
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(set 'compilation-mode-font-lock-keywords '())
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(set-input-method "Lean")
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(set (make-local-variable 'lisp-indent-function)
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'common-lisp-indent-function))
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(defmacro lean4-with-info-output-to-buffer (buffer &rest body)
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`(let ((buf (get-buffer ,buffer)))
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(with-current-buffer buf
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(setq buffer-read-only nil)
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(erase-buffer)
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(setq standard-output buf)
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. ,body)))
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(defun lean4-ensure-info-buffer (buffer)
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(unless (get-buffer buffer)
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(with-current-buffer (get-buffer-create buffer)
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(buffer-disable-undo)
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(lean4-info-mode))))
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(defun lean4-toggle-info-buffer (buffer)
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(-if-let (window (get-buffer-window buffer))
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(quit-window nil window)
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(lean4-ensure-info-buffer buffer)
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(display-buffer buffer)))
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(defun lean4-info-buffer-active (buffer)
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"Checks whether the given info buffer should show info for the current buffer"
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(and
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;; info buffer visible
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(get-buffer-window buffer)
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;; current window of current buffer is selected (i.e., in focus)
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(eq (current-buffer) (window-buffer))))
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(lsp-interface
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(lean:PlainGoal (:rendered) nil))
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(defconst lean4-show-goal-buffer-name "*Lean Goal*")
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(defun lean4-show-goal--handler ()
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(let ((deactivate-mark)) ; keep transient mark
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(when (lean4-info-buffer-active lean4-show-goal-buffer-name)
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(lsp-request-async
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"$/lean/plainGoal"
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(lsp--text-document-position-params)
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(-lambda ((goal &as &lean:PlainGoal? :rendered))
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(when goal
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(let ((rerendered (lsp--render-string rendered "markdown")))
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(lean4-with-info-output-to-buffer
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lean4-show-goal-buffer-name
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(insert rerendered)
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(when lean4-highlight-inaccessible-names
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(goto-char 0)
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(while (re-search-forward "\\(\\sw+\\)✝\\([¹²³⁴-⁹⁰]*\\)" nil t)
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(replace-match
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(propertize (s-concat (match-string-no-properties 1) (match-string-no-properties 2))
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'font-lock-face 'font-lock-comment-face)
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'fixedcase 'literal)))))))
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:error-handler #'ignore
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:mode 'tick
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:cancel-token :plain-goal))))
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(defun lean4-toggle-show-goal ()
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"Show goal at the current point."
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(interactive)
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(lean4-toggle-info-buffer lean4-show-goal-buffer-name)
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(lean4-show-goal--handler))
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(provide 'lean4-info)
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