545 lines
21 KiB
EmacsLisp
545 lines
21 KiB
EmacsLisp
;; -*- lexical-binding: t; -*-
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;; Copyright (c) 2014 Microsoft Corporation. All rights reserved.
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;; Released under Apache 2.0 license as described in the file LICENSE.
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;;
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;; Author: Soonho Kong
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;;
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(require 'cl-lib)
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(require 'dash)
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(require 'dash-functional)
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(require 'flycheck)
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(require 's)
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(require 'lean-debug)
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(require 'lean-variable)
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(require 'lean-cmd)
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(require 'lean-info)
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(require 'lean-util)
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;; Parameters
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;; ==========
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(defvar lean-server-process-name "lean-server")
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(defvar lean-server-buffer-name "*lean-server*")
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(defvar lean-server-trace-buffer-name "*lean-server-trace*")
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(defvar lean-server-option "--server")
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;; Log & Trace
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;; ===========
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(defun lean-server-log (format-string &rest args)
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"Display a message at the bottom of the *lean-server* buffer."
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(lean-output-to-buffer (lean-server-get-buffer)
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(concat format-string)
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args)
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(apply 'lean-debug (cons format-string args)))
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(defun lean-server-trace (format-string &rest args)
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"Display a message at the bottom of the *lean-server* buffer."
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(when lean-debug-mode
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(when lean-global-server-last-time-sent
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(let ((time-diff (- (float-time) lean-global-server-last-time-sent)))
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(lean-output-to-buffer lean-server-trace-buffer-name
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"SLEEP %i\n"
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`(,(truncate (* 1000 time-diff))))))
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(setq lean-global-server-last-time-sent (float-time))
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(lean-output-to-buffer lean-server-trace-buffer-name
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format-string args)))
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;; How to read data from an async process
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;; ======================================
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(defconst lean-server-syntax-pattern
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`((INFO ,(rx line-start "-- BEGININFO" (* not-newline) line-end)
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,(rx line-start (group "-- ENDINFO") line-end))
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(SET ,(rx line-start "-- BEGINSET" line-end)
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,(rx line-start (group "-- ENDSET") line-end))
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(EVAL ,(rx line-start "-- BEGINEVAL" line-end)
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,(rx line-start (group "-- ENDEVAL") line-end))
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(OPTIONS ,(rx line-start "-- BEGINOPTIONS" line-end)
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,(rx line-start (group "-- ENDOPTIONS") line-end))
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(SHOW ,(rx line-start "-- BEGINSHOW" line-end)
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,(rx line-start (group "-- ENDSHOW") line-end))
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(FINDP ,(rx line-start "-- BEGINFINDP" (* not-newline) line-end)
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,(rx line-start (group "-- ENDFINDP") line-end))
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(FINDG ,(rx line-start "-- BEGINFINDG" (* not-newline) line-end)
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,(rx line-start (group "-- ENDFINDG") line-end))
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(WAIT ,(rx line-start "-- BEGINWAIT" line-end)
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,(rx line-start (group "-- ENDWAIT") line-end))
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(ERROR ,(rx line-start "-- " (0+ not-newline) line-end)
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,(rx line-start (group "-- ERROR" (0+ not-newline)) line-end)))
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"Regular expression pattern for lean-server message syntax")
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(defun lean-server-split-buffer (buf-str beg-regex end-regex)
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""
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(let ((beg (string-match beg-regex buf-str))
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(end (string-match end-regex buf-str))
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pre body post)
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(when (and beg end)
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(setq end (match-end 1))
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(setq pre (substring-no-properties buf-str 0 beg))
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(setq body (substring-no-properties buf-str beg end))
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(setq post (substring-no-properties buf-str end))
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`(,pre ,body ,post))))
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(defun lean-server-check-buffer-and-partition (buf-str)
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"Return the status of buffer."
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(when buf-str
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(let (matches partition-result)
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(setq matches
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(cl-loop for (type beg-regex end-regex) in lean-server-syntax-pattern
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do (setq partition-result (lean-server-split-buffer buf-str beg-regex end-regex))
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if partition-result
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collect `(,type ,partition-result)))
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(when matches
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(-min-by (-on '< (lambda (type-partition-result) (length (car (cdr type-partition-result)))))
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matches)))))
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(defun lean-server-process-received-message (buf str)
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"Process received message from lean-server"
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(lean-server-log "%s:\n%s\n"
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(propertize "Received Message" 'face 'font-lock-variable-name-face)
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str)
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(setq lean-global-server-buffer (concat lean-global-server-buffer str)))
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(defun lean-server-output-filter (process string)
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"Filter function attached to lean-server process"
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(lean-server-process-received-message (process-buffer process) string))
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(defun lean-server-handle-signal (process event)
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"Handle signals for lean-server-process"
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(let ((event-string (s-trim event)))
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(lean-server-initialize-global-vars)
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(lean-debug "lean-server-handle-signal: %s"
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(propertize event-string 'face '(:foreground "red")))
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(lean-server-trace "lean-server-handle-signal: %s\n"
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(propertize event-string 'face '(:foreground "red")))))
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;; How to create an async process
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;; ==============================
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(defun lean-server-cancel-retry-timer ()
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(when (timerp lean-global-retry-timer)
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(cancel-timer lean-global-retry-timer))
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(setq lean-global-retry-timer nil))
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(defun lean-server-initialize-global-vars ()
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"Initialize lean-server related global variables"
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(setq lean-global-server-buffer nil)
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(setq lean-global-server-current-file-name nil)
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(setq lean-global-server-message-to-process nil)
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(setq lean-global-server-last-time-sent nil)
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(setq lean-global-async-task-queue nil)
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(setq lean-global-nay-retry-counter 0)
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(setq lean-global-option-alist nil)
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(lean-server-cancel-retry-timer))
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(defun lean-server-create-process ()
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"Create lean-server process."
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(let ((process-connection-type nil)
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(lean-server-process
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(start-process lean-server-process-name
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lean-server-buffer-name
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(lean-get-executable lean-executable-name)
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lean-server-option)))
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(set-process-coding-system lean-server-process 'utf-8 'utf-8)
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(set-process-filter lean-server-process 'lean-server-output-filter)
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(set-process-sentinel lean-server-process 'lean-server-handle-signal)
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(set-process-query-on-exit-flag lean-server-process nil)
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(lean-server-initialize-global-vars)
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(setq lean-global-server-process lean-server-process)
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(lean-debug "lean-server process %S is created" lean-server-process)
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lean-server-process))
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(defun lean-server-kill-process ()
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"Kill lean-server process. Return t if killed, nil if nothing to kill"
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(interactive)
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(lean-server-initialize-global-vars)
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(cond
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((and lean-global-server-process
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(not (= 0 (process-exit-status lean-global-server-process))))
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(setq lean-global-server-process nil) t)
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(lean-global-server-process
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(when (interactive-p)
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(message "lean-server-kill-process: %S killed" lean-global-server-process))
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(kill-process lean-global-server-process)
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(setq lean-global-server-process nil) t)
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(t
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(when (interactive-p)
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(message "lean-server-kill-process: no process to kill")) nil)))
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(defun lean-server-restart-process ()
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"Restart lean-server process."
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(interactive)
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(and (lean-server-kill-process)
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(lean-server-create-process)))
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(defun lean-server-process-exist-p ()
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"Return t if lean-server-process exists, otherwise return nil"
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(if lean-global-server-process
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t
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nil))
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(defun lean-server-get-process ()
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"Get lean-server process. If needed, create a one."
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(cond ((not lean-global-server-process)
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(lean-server-create-process))
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((not (process-live-p lean-global-server-process))
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(when (interactive-p)
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(message "lean-server-get-process: %S is not live, kill it"
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lean-global-server-process))
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(lean-server-restart-process))
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(t lean-global-server-process)))
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(defun lean-server-get-buffer ()
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"Get lean-server buffer."
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(process-buffer (lean-server-get-process)))
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;; How to send data to an async process
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;; ====================================
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(defun lean-server-flush-changed-lines ()
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"Flush lean-changed-lines.
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Send REPLACE commands to lean-server, reset lean-changed-lines to nil."
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(cl-loop for n in lean-changed-lines
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do (lean-server-send-cmd-async (lean-cmd-replace n (lean-grab-line n)))
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finally (setq lean-changed-lines nil)))
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(defun lean-server-visit-current-buffer ()
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"Send VISIT for the current buffer"
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(cond ((and (buffer-modified-p)
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(not lean-global-server-current-file-name))
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(lean-server-handle-modified-buffer))
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(t (lean-server-send-cmd-async (lean-cmd-visit)))))
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(defun lean-server-check-current-file (&optional file-name)
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"Check lean-global-server-current-file-name
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If it's not the same with file-name (default: buffer-file-name), send VISIT cmd."
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(let ((current-file-name (or file-name (buffer-file-name))))
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(unless (string= lean-global-server-current-file-name
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current-file-name)
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(lean-server-visit-current-buffer))))
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(defun lean-server-before-send-cmd (cmd)
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"Operations to perform before sending a command."
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(cl-case (lean-cmd-type cmd)
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('LOAD (setq lean-global-server-current-file-name
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(lean-cmd-load-get-file-name cmd)))
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('VISIT (setq lean-global-server-current-file-name
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(lean-cmd-visit-get-file-name cmd)))
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('REPLACE (lean-server-check-current-file))
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('INSERT (lean-server-check-current-file))
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('REMOVE (lean-server-check-current-file))
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('INFO (lean-server-flush-changed-lines))
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('CHECK ())
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('SET ())
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('EVAL (lean-server-check-current-file))
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('OPTIONS ())
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('SHOW (lean-server-check-current-file))
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('VALID (lean-server-check-current-file))
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('FINDP (lean-server-flush-changed-lines)
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(lean-server-check-current-file))
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('FINDG (lean-server-flush-changed-lines)
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(lean-server-check-current-file))
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('WAIT (lean-server-check-current-file))))
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(defun lean-server-after-send-cmd (cmd)
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"Operations to perform after sending a command."
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(cl-case (lean-cmd-type cmd)
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('LOAD ())
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('VISIT ())
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('REPLACE ())
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('INSERT ())
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('REMOVE ())
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('INFO ())
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('CHECK ())
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('SET ())
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('EVAL ())
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('OPTIONS ())
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('SHOW ())
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('VALID ())
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('FINDP ())
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('FINDG ())
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('WAIT ())))
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(defun lean-server-send-cmd (cmd)
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"Send cmd to lean-server"
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(let ((proc (lean-server-get-process))
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(string-to-send (concat (lean-cmd-to-string cmd) "\n")))
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(lean-server-before-send-cmd cmd)
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;; Logging
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(lean-server-log "%s:\n%s"
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(propertize "Sent Message" 'face 'font-lock-variable-name-face)
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string-to-send)
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;; Trace
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(lean-server-trace
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(format "%s" string-to-send))
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(process-send-string proc string-to-send)
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(lean-server-after-send-cmd cmd)))
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(defun lean-server-process-message-with-cont (body type cont cmd-type)
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"Process the message from lean-server and call continuation"
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(lean-debug "process-message-with-cont: type = %S, cmd-type = %S"
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type cmd-type)
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(lean-debug "process-message-with-cont: body\n-----\n%s\n-----\n" body)
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(cl-case type
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(INFO
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(lean-debug "Process: INFO")
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(let ((info-record (lean-server-get-info-record-at-pos body)))
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(funcall cont info-record)))
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(SET
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(lean-debug "Process: SET")
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;; Call cont with string
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(funcall cont (lean-set-parse-string body)))
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(EVAL
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(lean-debug "Process: EVAL")
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;; Call cont with string
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(funcall cont (lean-eval-parse-string body)))
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(OPTIONS
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(lean-debug "Process: OPTIONS")
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;; Call cont with alist of lean-option-records
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(funcall cont (lean-options-parse-string body)))
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(SHOW
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(lean-debug "Process: SHOW")
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;; Call cont with string
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(funcall cont (lean-show-parse-string body)))
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(FINDP
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(lean-debug "Process: FINDP")
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;; Call cont with (name * type) list
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(funcall cont (lean-findp-parse-string body)))
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(FINDG
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(lean-debug "Process: FINDG")
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;; Call cont with (name * type) list
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(funcall cont (lean-findg-parse-string body)))
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(WAIT
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(lean-debug "Process: WAIT")
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;; Call cont
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(funcall cont))
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(ERROR
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(lean-server-log "Error detected:\n%s" body))))
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(defun lean-server-check-and-process-buffer-with-cont (cont cmd-type)
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"Check server-buffer and process the message with a continuation if it's ready."
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(let ((partition-result (lean-server-check-buffer-and-partition
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lean-global-server-buffer))
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result)
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(condition-case err
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(pcase partition-result
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(`(,type (,pre ,body ,post))
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(lean-server-log "The following pre-message will be thrown away:")
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(lean-server-log "%s" pre)
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(setq lean-global-server-buffer post)
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(setq result (lean-server-process-message-with-cont body type cont cmd-type))
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`(PROCESSED ,result))
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(`nil '(NOTREADY)))
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(error `(ERROR ,err))
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(quit `(QUIT ,err)))))
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(defun lean-server-async-task-queue-len ()
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(length lean-global-async-task-queue))
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(defun lean-server-async-task-queue-push-back (cont cmd-type)
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(setq lean-global-async-task-queue (-snoc lean-global-async-task-queue
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`(,cont . ,cmd-type))))
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(defun lean-server-async-task-queue-peek-front ()
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(car lean-global-async-task-queue))
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(defun lean-server-async-task-queue-pop-front ()
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(!cdr lean-global-async-task-queue))
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(defun lean-server-send-cmd-async (cmd &optional cont)
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"Send cmd to lean-server and attach continuation to the queue."
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(lean-debug "send-cmd-async: %S %S" (lean-cmd-type cmd) (cl-second cmd))
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(lean-debug "send-cmd-async: queue len = %d" (lean-server-async-task-queue-len))
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(lean-server-send-cmd cmd)
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(when cont
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(lean-server-async-task-queue-push-back cont (lean-cmd-type cmd))
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(lean-debug "send-cmd-async: added to %s the queue, queue size = %d"
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(lean-cmd-type cmd)
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(lean-server-async-task-queue-len))
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(lean-debug "send-cmd-async: call handler")
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(lean-server-set-timer-for-event-handler)))
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(defun lean-server-consume-all-async-tasks ()
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(lean-debug "lean-server-consume-all-async-tasks: queue size = %d"
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(lean-server-async-task-queue-len))
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(while lean-global-async-task-queue
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(accept-process-output (lean-server-get-process) 0 50 t)
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(let* ((front-item (lean-server-async-task-queue-peek-front))
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(cont (car front-item))
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(cmd-type (cdr front-item))
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(result (lean-server-check-and-process-buffer-with-cont cont
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cmd-type)))
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(pcase result
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(`(PROCESSED ,ret)
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(lean-server-async-task-queue-pop-front)
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(lean-debug "lean-server-consume-all-sync-tasks: processed. queue size = %d"
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(lean-server-async-task-queue-len)))
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(`(NOTREADY)
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(lean-debug "lean-server-consume-all-sync-tasks: not ready. queue size = %d"
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(lean-server-async-task-queue-len)))
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(t
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(lean-server-async-task-queue-pop-front)
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(lean-debug "lean-server-consume-all-sync-tasks: either error or quit happend. queue size = %d"
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(lean-server-async-task-queue-len))))))
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(lean-debug "lean-server-consume-all-async-tasks: over. queue size = %d"
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(lean-server-async-task-queue-len)))
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(defun lean-server-send-cmd-sync (cmd &optional cont)
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"Send cmd to lean-server (sync)."
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(lean-debug "send-cmd-sync: %S" (lean-cmd-type cmd))
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(lean-server-cancel-retry-timer)
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(lean-server-consume-all-async-tasks)
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(lean-server-send-cmd cmd)
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(let ((result (lean-server-check-and-process-buffer-with-cont cont (lean-cmd-type cmd))))
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(while (equal result '(NOTREADY))
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(accept-process-output (lean-server-get-process) 0 50 t)
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(setq result (lean-server-check-and-process-buffer-with-cont cont (lean-cmd-type cmd))))
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(pcase result
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(`(PROCESSED ,ret)
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(lean-debug "lean-server-send-cmd-sync: %S, processed result = %S"
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cmd
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result)
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ret)
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(`(ERROR ,err)
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(lean-debug "lean-server-send-cmd-sync: %S, error = %S"
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cmd
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err))
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(`(QUIT ,err)
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(lean-debug "lean-server-send-cmd-sync: %S, quit = %S"
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cmd
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err))
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(t
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(lean-debug "lean-server-send-cmd-sync: %S, ??? = %S"
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cmd
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result)))))
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(defun lean-show-parse-string (str)
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"Parse the output of show command."
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(let ((str-list (split-string str "\n")))
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;; Drop the first line "-- BEGINSHOW" and
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;; the last line "-- ENDSHOW"
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(setq str-list
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(-take (- (length str-list) 2)
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(-drop 1 str-list)))
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(string-join str-list "\n")))
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(defun lean-findp-parse-string (str)
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"Parse the output of findp command."
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(let ((str-list (split-string str "\n")))
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;; Drop the first line "-- BEGINFINDP" and
|
|
;; the last line "-- ENDFINDP"
|
|
(setq str-list
|
|
(-take (- (length str-list) 2)
|
|
(-drop 1 str-list)))
|
|
(--map
|
|
(let ((items (split-string it "|")))
|
|
`(,(cl-first items) . ,(cl-second items))) str-list)))
|
|
|
|
(defun lean-findg-parse-string (str)
|
|
"Parse the output of findg command."
|
|
(let ((str-list (split-string str "\n")))
|
|
;; Drop the first line "-- BEGINFINDG" and
|
|
;; the last line "-- ENDFINDG"
|
|
(setq str-list
|
|
(-take (- (length str-list) 2)
|
|
(-drop 1 str-list)))
|
|
(--map
|
|
(let ((items (split-string it "|")))
|
|
`(,(cl-first items) . ,(cl-second items))) str-list)))
|
|
|
|
(defun lean-server-show ()
|
|
(interactive)
|
|
(lean-server-send-cmd-async (lean-cmd-show) 'message))
|
|
|
|
(defun lean-server-valid ()
|
|
(interactive)
|
|
(lean-server-send-cmd-async (lean-cmd-valid) 'message))
|
|
|
|
(defun lean-server-set-timer-for-event-handler ()
|
|
(lean-debug "set-timer-for-event-handler")
|
|
(unless lean-global-retry-timer
|
|
(setq lean-global-retry-timer
|
|
(run-with-idle-timer
|
|
(if (current-idle-time)
|
|
(time-add (seconds-to-time lean-server-retry-time) (current-idle-time))
|
|
lean-server-retry-time)
|
|
nil
|
|
'lean-server-event-handler)))
|
|
nil)
|
|
|
|
(defun lean-server-get-info-record-at-pos (body)
|
|
(let* ((file-name (buffer-file-name))
|
|
(column (current-column)))
|
|
(when (and (or (looking-at (rx (or white "," ")" "}" "]")))
|
|
(eolp))
|
|
(> column 1))
|
|
(setq column (1- column)))
|
|
(lean-info-record-parse body file-name column)))
|
|
|
|
(defun lean-server-event-handler ()
|
|
"Process an item from async-task-queue.
|
|
|
|
If it's successful, take it out from the queue.
|
|
Otherwise, set an idle-timer to call the handler again"
|
|
(lean-server-cancel-retry-timer)
|
|
(when (eq major-mode 'lean-mode)
|
|
(let* ((front-item (lean-server-async-task-queue-peek-front))
|
|
(cont (car front-item))
|
|
(cmd-type (cdr front-item))
|
|
(result (lean-server-check-and-process-buffer-with-cont cont
|
|
cmd-type)))
|
|
(pcase result
|
|
(`(PROCESSED ,ret)
|
|
(lean-server-async-task-queue-pop-front)
|
|
(lean-debug "event-handler: processed. now the queue size = %d\n"
|
|
(lean-server-async-task-queue-len))
|
|
ret)
|
|
(`(NOTREADY)
|
|
(lean-debug "event-handler: not ready. queue size = %d"
|
|
(lean-server-async-task-queue-len)))
|
|
(`(ERROR ,err)
|
|
(lean-server-async-task-queue-pop-front)
|
|
(lean-debug "event-handler: error %S. queue size = %d"
|
|
err
|
|
(lean-server-async-task-queue-len)))
|
|
(`(QUIT ,err)
|
|
(lean-server-async-task-queue-pop-front)
|
|
(lean-debug "event-handler: quit %S. queue size = %d"
|
|
err
|
|
(lean-server-async-task-queue-len)))))
|
|
(if lean-global-async-task-queue (lean-server-set-timer-for-event-handler))))
|
|
|
|
(defun lean-server-after-save ()
|
|
(let ((current-file-name (buffer-file-name)))
|
|
(when current-file-name
|
|
(lean-debug "lean-server-handle-save: %s" current-file-name)
|
|
(lean-server-send-cmd-async (lean-cmd-visit current-file-name)))))
|
|
|
|
(defun lean-server-save-buffer-to-temp-file (prefix)
|
|
"Save the current buffer to a temp-file and return its path"
|
|
(interactive)
|
|
(let ((temp-file (make-temp-file prefix)))
|
|
(with-current-buffer (flymake-copy-buffer-to-temp-buffer (current-buffer))
|
|
(set-visited-file-name temp-file)
|
|
(save-buffer 0)
|
|
(kill-buffer))
|
|
temp-file))
|
|
|
|
(defun lean-server-handle-modified-buffer ()
|
|
"Handle modified buffer when lean-mode start"
|
|
(interactive)
|
|
(when (buffer-file-name)
|
|
(let* ((current-file-name (buffer-file-name))
|
|
(current-directory (file-name-directory current-file-name))
|
|
(temp-prefix (concat (file-name-as-directory current-directory)
|
|
"lean-temp"))
|
|
(temp-file (lean-server-save-buffer-to-temp-file temp-prefix)))
|
|
(lean-debug "lean-server-handle-modified-buffer: %s => %s"
|
|
current-file-name
|
|
temp-file)
|
|
(lean-server-send-cmd-async (lean-cmd-visit temp-file))
|
|
(setq lean-global-server-current-file-name current-file-name)
|
|
(lean-server-send-cmd-async (lean-cmd-wait)
|
|
(lambda () (delete-file temp-file))))))
|
|
|
|
(provide 'lean-server)
|