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644 строки
27 KiB
644 строки
27 KiB
;;; haskell-load.el --- Compiling and loading modules in the GHCi process -*- lexical-binding: t -*-
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;; Copyright © 2014 Chris Done. All rights reserved.
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;; 2016 Arthur Fayzrakhmanov
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;; This file is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 3, or (at your option)
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;; any later version.
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;; This file is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(require 'cl-lib)
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(require 'haskell-mode)
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(require 'haskell-process)
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(require 'haskell-interactive-mode)
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(require 'haskell-modules)
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(require 'haskell-commands)
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(require 'haskell-session)
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(require 'haskell-string)
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(defun haskell-process-look-config-changes (session)
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"Check whether a cabal configuration file has changed.
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Restarts the SESSION's process if that is the case."
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(let ((current-checksum (haskell-session-get session 'cabal-checksum))
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(new-checksum (haskell-cabal-compute-checksum
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(haskell-session-get session 'cabal-dir))))
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(when (not (string= current-checksum new-checksum))
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(haskell-interactive-mode-echo
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session
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(format "Cabal file changed: %s" new-checksum))
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(haskell-session-set-cabal-checksum
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session
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(haskell-session-get session 'cabal-dir))
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(haskell-mode-toggle-interactive-prompt-state)
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(unwind-protect
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(unless
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(and haskell-process-prompt-restart-on-cabal-change
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(not
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(y-or-n-p "Cabal file changed. Restart GHCi process? ")))
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(haskell-process-start (haskell-interactive-session)))
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(haskell-mode-toggle-interactive-prompt-state t)))))
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(defun haskell-process-live-build (process buffer echo-in-repl)
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"Show live updates for loading files."
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(cond
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((haskell-process-consume
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process
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(concat "\\[[ ]*\\([0-9]+\\) of \\([0-9]+\\)\\]"
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" Compiling \\([^ ]+\\)[ ]+"
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"( \\([^ ]+\\), \\([^ ]+\\) )[^\r\n]*[\r\n]+"))
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(haskell-process-echo-load-message process buffer echo-in-repl nil)
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t)
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((haskell-process-consume
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process
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(concat "\\[[ ]*\\([0-9]+\\) of \\([0-9]+\\)\\]"
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" Compiling \\[TH\\] \\([^ ]+\\)[ ]+"
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"( \\([^ ]+\\), \\([^ ]+\\) )[^\r\n]*[\r\n]+"))
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(haskell-process-echo-load-message process buffer echo-in-repl t)
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t)
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((haskell-process-consume
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process
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"Loading package \\([^ ]+\\) ... linking ... done.\n")
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(haskell-mode-message-line
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(format "Loading: %s"
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(match-string 1 buffer)))
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t)
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((haskell-process-consume
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process
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"^Preprocessing executables for \\(.+?\\)\\.\\.\\.")
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(let ((msg (format "Preprocessing: %s" (match-string 1 buffer))))
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(haskell-interactive-mode-echo (haskell-process-session process) msg)
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(haskell-mode-message-line msg)))
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((haskell-process-consume process "Linking \\(.+?\\) \\.\\.\\.")
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(let ((msg (format "Linking: %s" (match-string 1 buffer))))
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(haskell-interactive-mode-echo (haskell-process-session process) msg)
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(haskell-mode-message-line msg)))
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((haskell-process-consume process "\nBuilding \\(.+?\\)\\.\\.\\.")
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(let ((msg (format "Building: %s" (match-string 1 buffer))))
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(haskell-interactive-mode-echo (haskell-process-session process) msg)
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(haskell-mode-message-line msg)))
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((string-match "Collecting type info for [[:digit:]]+ module(s) \\.\\.\\."
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(haskell-process-response process)
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(haskell-process-response-cursor process))
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(haskell-mode-message-line (match-string 0 buffer))
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;; Do not consume "Ok, modules loaded" that goes before
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;; "Collecting type info...", just exit.
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nil)))
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(defun haskell-process-load-complete (session process buffer reload module-buffer &optional cont)
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"Handle the complete loading response. BUFFER is the string of
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text being sent over the process pipe. MODULE-BUFFER is the
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actual Emacs buffer of the module being loaded."
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(when (get-buffer (format "*%s:splices*" (haskell-session-name session)))
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(with-current-buffer (haskell-interactive-mode-splices-buffer session)
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(erase-buffer)))
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(let* ((ok (cond
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((haskell-process-consume
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process
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"Ok, \\(?:[0-9]+\\) modules? loaded\\.$")
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t)
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((haskell-process-consume
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process
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"Ok, \\(?:[a-z]+\\) modules? loaded\\.$") ;; for ghc 8.4
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t)
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((haskell-process-consume
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process
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"Failed, \\(?:[0-9]+\\) modules? loaded\\.$")
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nil)
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((haskell-process-consume
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process
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"Failed, \\(?:[a-z]+\\) modules? loaded\\.$") ;; ghc 8.6.3 says so
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nil)
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((haskell-process-consume
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process
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"Ok, modules loaded: \\(.+\\)\\.$")
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t)
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((haskell-process-consume
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process
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"Failed, modules loaded: \\(.+\\)\\.$")
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nil)
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((haskell-process-consume
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process
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"Failed, no modules loaded\\.$") ;; for ghc 8.4
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nil)
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(t
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(error (message "Unexpected response from haskell process.")))))
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(modules (haskell-process-extract-modules buffer))
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(cursor (haskell-process-response-cursor process))
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(warning-count 0))
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(haskell-process-set-response-cursor process 0)
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(haskell-check-remove-overlays module-buffer)
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(while
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(haskell-process-errors-warnings module-buffer session process buffer)
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(setq warning-count (1+ warning-count)))
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(haskell-process-set-response-cursor process cursor)
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(if (and (not reload)
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haskell-process-reload-with-fbytecode)
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(haskell-process-reload-with-fbytecode process module-buffer)
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(haskell-process-import-modules process (car modules)))
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(if ok
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(haskell-mode-message-line (if reload "Reloaded OK." "OK."))
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(haskell-interactive-mode-compile-error session "Compilation failed."))
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(when cont
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(condition-case-unless-debug e
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(funcall cont ok)
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(error (message "%S" e))
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(quit nil)))))
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(defun haskell-process-suggest-imports (session file modules ident)
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"Suggest add missed imports to file.
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Asks user to add to SESSION's FILE missed import. MODULES is a
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list of modules where missed IDENT was found."
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(cl-assert session)
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(cl-assert file)
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(cl-assert ident)
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(haskell-mode-toggle-interactive-prompt-state)
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(unwind-protect
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(let* ((process (haskell-session-process session))
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(suggested-already (haskell-process-suggested-imports process))
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(module
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(cond
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((> (length modules) 1)
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(when (y-or-n-p
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(format
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"Identifier `%s' not in scope, choose module to import?"
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ident))
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(haskell-complete-module-read "Module: " modules)))
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((= (length modules) 1)
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(let ((module (car modules)))
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(unless (member module suggested-already)
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(haskell-process-set-suggested-imports
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process
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(cons module suggested-already))
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(when (y-or-n-p
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(format "Identifier `%s' not in scope, import `%s'?"
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ident
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module))
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module)))))))
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(when module
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(haskell-process-find-file session file)
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(haskell-add-import module)))
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(haskell-mode-toggle-interactive-prompt-state t)))
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(defun haskell-process-trigger-suggestions (session msg file line)
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"Trigger prompting to add any extension suggestions."
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(cond ((let ((case-fold-search nil))
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(or
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(and (string-match " -X\\([A-Z][A-Za-z]+\\)" msg)
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(not (string-match "\\([A-Z][A-Za-z]+\\) is deprecated" msg)))
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(string-match "Use \\([A-Z][A-Za-z]+\\) to permit this" msg)
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(string-match "Use \\([A-Z][A-Za-z]+\\) to allow" msg)
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(string-match "Use \\([A-Z][A-Za-z]+\\) to enable" msg)
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(string-match
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"Use \\([A-Z][A-Za-z]+\\) if you want to disable this"
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msg)
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(string-match "use \\([A-Z][A-Za-z]+\\)" msg)
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(string-match "You need \\([A-Z][A-Za-z]+\\)" msg)))
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(when haskell-process-suggest-language-pragmas
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(haskell-process-suggest-pragma
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session
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"LANGUAGE"
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(match-string 1 msg)
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file)))
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((string-match
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" The \\(qualified \\)?import of[ ][‘`‛]\\([^ ]+\\)['’] is redundant"
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msg)
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(when haskell-process-suggest-remove-import-lines
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(haskell-process-suggest-remove-import
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session
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file
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(match-string 2 msg)
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line)))
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((string-match "[Ww]arning: orphan instance: " msg)
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(when haskell-process-suggest-no-warn-orphans
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(haskell-process-suggest-pragma
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session
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"OPTIONS" "-fno-warn-orphans"
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file)))
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((or (string-match "against inferred type [‘`‛]\\[Char\\]['’]" msg)
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(string-match "with actual type [‘`‛]\\[Char\\]['’]" msg))
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(when haskell-process-suggest-overloaded-strings
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(haskell-process-suggest-pragma
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session
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"LANGUAGE" "OverloadedStrings"
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file)))
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((string-match "^Not in scope: .*[‘`‛]\\(.+\\)['’]$" msg)
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(let* ((match1 (match-string 1 msg))
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(ident (if (string-match "^[A-Za-z0-9_'.]+\\.\\(.+\\)$" match1)
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;; Skip qualification.
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(match-string 1 match1)
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match1)))
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(when haskell-process-suggest-hoogle-imports
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(let ((modules (haskell-process-hoogle-ident ident)))
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(haskell-process-suggest-imports session file modules ident)))
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(when haskell-process-suggest-haskell-docs-imports
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(let ((modules (haskell-process-haskell-docs-ident ident)))
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(haskell-process-suggest-imports session file modules ident)))
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(when haskell-process-suggest-hayoo-imports
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(let ((modules (haskell-process-hayoo-ident ident)))
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(haskell-process-suggest-imports session file modules ident)))))
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((string-match "^[ ]+It is a member of the hidden package [‘`‛]\\([^@\r\n]+\\).*['’].$" msg)
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(when haskell-process-suggest-add-package
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(haskell-process-suggest-add-package session msg)))))
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(defun haskell-process-do-cabal (command)
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"Run a Cabal command."
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(let ((process (ignore-errors
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(haskell-interactive-process))))
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(cond
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((or (eq process nil)
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(let ((child (haskell-process-process process)))
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(not (equal 'run (process-status child)))))
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(message "Process is not running, so running directly.")
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(shell-command (concat "cabal " command)
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(get-buffer-create "*haskell-process-log*")
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(get-buffer-create "*haskell-process-log*"))
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(switch-to-buffer-other-window (get-buffer "*haskell-process-log*")))
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(t (haskell-process-queue-command
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process
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(make-haskell-command
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:state (list (haskell-interactive-session) process command 0)
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:go
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(lambda (state)
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(haskell-process-send-string
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(cadr state)
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(format haskell-process-do-cabal-format-string
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(haskell-session-cabal-dir (car state))
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(format "%s %s"
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(cl-ecase (haskell-process-type)
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('ghci haskell-process-path-cabal)
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('cabal-repl haskell-process-path-cabal)
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('cabal-new-repl haskell-process-path-cabal)
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('cabal-ghci haskell-process-path-cabal)
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('stack-ghci haskell-process-path-stack))
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(cl-caddr state)))))
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:live
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(lambda (state buffer)
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(let ((cmd (replace-regexp-in-string "^\\([a-z]+\\).*"
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"\\1"
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(cl-caddr state))))
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(cond ((or (string= cmd "build")
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(string= cmd "install"))
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(haskell-process-live-build (cadr state) buffer t))
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(t
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(haskell-process-cabal-live state buffer)))))
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:complete
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(lambda (state response)
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(let* ((process (cadr state))
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(session (haskell-process-session process))
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(message-count 0)
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(cursor (haskell-process-response-cursor process)))
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;; XXX: what the hell about the rampant code duplication?
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(haskell-process-set-response-cursor process 0)
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(while (haskell-process-errors-warnings nil session process response)
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(setq message-count (1+ message-count)))
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(haskell-process-set-response-cursor process cursor)
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(let ((msg (format "Complete: cabal %s (%s compiler messages)"
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(cl-caddr state)
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message-count)))
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(haskell-interactive-mode-echo session msg)
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(when (= message-count 0)
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(haskell-interactive-mode-echo
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session
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"No compiler messages, dumping complete output:")
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(haskell-interactive-mode-echo session response))
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(haskell-mode-message-line msg)
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(when (and haskell-notify-p
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(fboundp 'notifications-notify))
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(notifications-notify
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:title (format "*%s*" (haskell-session-name (car state)))
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:body msg
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:app-name (cl-ecase (haskell-process-type)
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('ghci haskell-process-path-cabal)
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('cabal-repl haskell-process-path-cabal)
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('cabal-new-repl haskell-process-path-cabal)
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('cabal-ghci haskell-process-path-cabal)
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('stack-ghci haskell-process-path-stack))
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:app-icon haskell-process-logo)))))))))))
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(defun haskell-process-echo-load-message (process buffer echo-in-repl th)
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"Echo a load message."
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(let ((session (haskell-process-session process))
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(module-name (match-string 3 buffer))
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(file-name (match-string 4 buffer)))
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(haskell-interactive-show-load-message
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session
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'compiling
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module-name
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(haskell-session-strip-dir session file-name)
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echo-in-repl
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th)))
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(defun haskell-process-extract-modules (buffer)
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"Extract the modules from the process buffer."
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(let* ((modules-string (match-string 1 buffer))
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(modules (and modules-string (split-string modules-string ", "))))
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(cons modules modules-string)))
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;;;###autoload
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(defface haskell-error-face
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'((((supports :underline (:style wave)))
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:underline (:style wave :color "#dc322f"))
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(t
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:inherit error))
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"Face used for marking error lines."
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:group 'haskell-mode)
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;;;###autoload
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(defface haskell-warning-face
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'((((supports :underline (:style wave)))
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:underline (:style wave :color "#b58900"))
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(t
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:inherit warning))
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"Face used for marking warning lines."
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:group 'haskell-mode)
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;;;###autoload
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(defface haskell-hole-face
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'((((supports :underline (:style wave)))
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:underline (:style wave :color "#6c71c4"))
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(t
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:inherit warning))
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"Face used for marking hole lines."
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:group 'haskell-mode)
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(defvar haskell-check-error-fringe (propertize "!" 'display '(left-fringe exclamation-mark)))
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(defvar haskell-check-warning-fringe (propertize "?" 'display '(left-fringe question-mark)))
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(defvar haskell-check-hole-fringe (propertize "_" 'display '(left-fringe horizontal-bar)))
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(defun haskell-check-overlay-p (ovl)
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(overlay-get ovl 'haskell-check))
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(defun haskell-check-filter-overlays (xs)
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(cl-remove-if-not 'haskell-check-overlay-p xs))
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(defun haskell-check-remove-overlays (buffer)
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(with-current-buffer buffer
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(remove-overlays (point-min) (point-max) 'haskell-check t)))
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(defmacro haskell-with-overlay-properties (proplist ovl &rest body)
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"Evaluate BODY with names in PROPLIST bound to the values of
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correspondingly-named overlay properties of OVL."
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(let ((ovlvar (cl-gensym "OVL-")))
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`(let* ((,ovlvar ,ovl)
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,@(mapcar (lambda (p) `(,p (overlay-get ,ovlvar ',p))) proplist))
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,@body)))
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(defun haskell-overlay-start> (o1 o2)
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(> (overlay-start o1) (overlay-start o2)))
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(defun haskell-overlay-start< (o1 o2)
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(< (overlay-start o1) (overlay-start o2)))
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(defun haskell-first-overlay-in-if (test beg end)
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(let ((ovls (cl-remove-if-not test (overlays-in beg end))))
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(cl-first (sort (cl-copy-list ovls) 'haskell-overlay-start<))))
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(defun haskell-last-overlay-in-if (test beg end)
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(let ((ovls (cl-remove-if-not test (overlays-in beg end))))
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(cl-first (sort (cl-copy-list ovls) 'haskell-overlay-start>))))
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(defun haskell-error-overlay-briefly (ovl)
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(haskell-with-overlay-properties
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(haskell-msg haskell-msg-type) ovl
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(cond
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((not (eq haskell-msg-type 'warning))
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haskell-msg)
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((string-prefix-p "[Ww]arning:\n " haskell-msg)
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(cl-subseq haskell-msg 13))
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(t
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(error
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"Invariant failed: a warning message from GHC has unexpected form: %s."
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haskell-msg)))))
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(defun haskell-goto-error-overlay (ovl)
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(cond (ovl
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(goto-char (overlay-start ovl))
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(haskell-mode-message-line (haskell-error-overlay-briefly ovl)))
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(t
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(message "No further notes from Haskell compiler."))))
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(defun haskell-goto-first-error ()
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(interactive)
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(haskell-goto-error-overlay
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(haskell-first-overlay-in-if 'haskell-check-overlay-p
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(buffer-end 0) (buffer-end 1))))
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(defun haskell-goto-prev-error ()
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(interactive)
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(haskell-goto-error-overlay
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(let ((ovl-at
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(cl-first (haskell-check-filter-overlays (overlays-at (point))))))
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(or (haskell-last-overlay-in-if 'haskell-check-overlay-p
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(point-min)
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(if ovl-at (overlay-start ovl-at) (point)))
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ovl-at))))
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(defun haskell-goto-next-error ()
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(interactive)
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(haskell-goto-error-overlay
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(let ((ovl-at
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(cl-first (haskell-check-filter-overlays (overlays-at (point))))))
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(or (haskell-first-overlay-in-if
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'haskell-check-overlay-p
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(if ovl-at (overlay-end ovl-at) (point)) (point-max))
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ovl-at))))
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(defun haskell-check-paint-overlay
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(buffer error-from-this-file-p line msg file type hole coln)
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(with-current-buffer buffer
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(let (beg end)
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(goto-char (point-min))
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;; XXX: we can avoid excess buffer walking by relying on the maybe-fact
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;; that GHC sorts error messages by line number, maybe.
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(cond
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(error-from-this-file-p
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(forward-line (1- line))
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(forward-char (1- coln))
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(setq beg (point))
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(if (eq type 'hole)
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(forward-char (length hole))
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(skip-chars-forward "^[:space:]" (line-end-position)))
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(setq end (point)))
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(t
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(setq beg (point))
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(forward-line)
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(setq end (point))))
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(let ((ovl (make-overlay beg end)))
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(overlay-put ovl 'haskell-check t)
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(overlay-put ovl 'haskell-file file)
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(overlay-put ovl 'haskell-msg msg)
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(overlay-put ovl 'haskell-msg-type type)
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(overlay-put ovl 'help-echo msg)
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(overlay-put ovl 'haskell-hole hole)
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(cl-destructuring-bind
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(face fringe)
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(cl-case type
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(warning
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(list 'haskell-warning-face haskell-check-warning-fringe))
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(hole
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(list 'haskell-hole-face haskell-check-hole-fringe))
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(error
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(list 'haskell-error-face haskell-check-error-fringe)))
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(overlay-put ovl 'before-string fringe)
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(overlay-put ovl 'face face))))))
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(defun haskell-process-errors-warnings
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(module-buffer session process buffer &optional return-only)
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"Trigger handling type errors or warnings.
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Either prints the messages in the interactive buffer or if CONT
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is specified, passes the error onto that.
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When MODULE-BUFFER is non-NIL, paint error overlays."
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(save-excursion
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(cond
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((haskell-process-consume
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process
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"\\(Module imports form a cycle:[ \n]+module [^ ]+ ([^)]+)[[:unibyte:][:nonascii:]]+?\\)\nFailed")
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(let ((err (match-string 1 buffer)))
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(if (string-match "module [`'‘‛]\\([^ ]+\\)['’`] (\\([^)]+\\))" err)
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(let* ((default-directory (haskell-session-current-dir session))
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(module (match-string 1 err))
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(file (match-string 2 err))
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(relative-file-name (file-relative-name file)))
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(unless return-only
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(haskell-interactive-show-load-message
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|
session
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|
'import-cycle
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|
module
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|
relative-file-name
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|
nil
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|
nil)
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|
(haskell-interactive-mode-compile-error
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|
session
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|
(format "%s:1:0: %s"
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|
relative-file-name
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|
err)))
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(list :file file :line 1 :col 0 :msg err :type 'error))
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t)))
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((haskell-process-consume
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process
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|
(concat "[\r\n]\\([A-Z]?:?[^ \r\n:][^:\n\r]+\\):\\([0-9()-:]+\\):"
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"[ \n\r]+\\([[:unibyte:][:nonascii:]]+?\\)\n[^ ]"))
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|
(haskell-process-set-response-cursor
|
|
process
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|
(- (haskell-process-response-cursor process) 1))
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|
(let* ((buffer (haskell-process-response process))
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|
(file (match-string 1 buffer))
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|
(location-raw (match-string 2 buffer))
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|
(error-msg (match-string 3 buffer))
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|
(type (cond ((string-match "^[Ww]arning:" error-msg) 'warning)
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|
((string-match "^Splicing " error-msg) 'splice)
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|
(t 'error)))
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|
(critical (not (eq type 'warning)))
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|
;; XXX: extract hole information, pass down to
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|
;; `haskell-check-paint-overlay'
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|
(final-msg (format "%s:%s: %s"
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|
(haskell-session-strip-dir session file)
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|
location-raw
|
|
error-msg))
|
|
(location (haskell-process-parse-error
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|
(concat file ":" location-raw ": x")))
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|
(line (plist-get location :line))
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|
(col1 (plist-get location :col)))
|
|
(when (and module-buffer haskell-process-show-overlays)
|
|
(haskell-check-paint-overlay
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|
module-buffer
|
|
(string= (file-truename (buffer-file-name module-buffer))
|
|
(file-truename file))
|
|
line error-msg file type nil col1))
|
|
(if return-only
|
|
(list :file file :line line :col col1 :msg error-msg :type type)
|
|
(progn (funcall (cl-case type
|
|
(warning 'haskell-interactive-mode-compile-warning)
|
|
(splice 'haskell-interactive-mode-compile-splice)
|
|
(error 'haskell-interactive-mode-compile-error))
|
|
session final-msg)
|
|
(when critical
|
|
(haskell-mode-message-line final-msg))
|
|
(haskell-process-trigger-suggestions
|
|
session
|
|
error-msg
|
|
file
|
|
line)
|
|
t)))))))
|
|
|
|
(defun haskell-interactive-show-load-message (session type module-name file-name echo th)
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|
"Show the '(Compiling|Loading) X' message."
|
|
(let ((msg (concat
|
|
(cl-ecase type
|
|
('compiling
|
|
(if haskell-interactive-mode-include-file-name
|
|
(format "Compiling: %s (%s)" module-name file-name)
|
|
(format "Compiling: %s" module-name)))
|
|
('loading (format "Loading: %s" module-name))
|
|
('import-cycle
|
|
(format "Module has an import cycle: %s" module-name)))
|
|
(if th " [TH]" ""))))
|
|
(haskell-mode-message-line msg)
|
|
(when haskell-interactive-mode-delete-superseded-errors
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|
(haskell-interactive-mode-delete-compile-messages session file-name))
|
|
(when echo
|
|
(haskell-interactive-mode-echo session msg))))
|
|
|
|
;;;###autoload
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|
(defun haskell-process-reload-devel-main ()
|
|
"Reload the module `DevelMain' and then run `DevelMain.update'.
|
|
|
|
This is for doing live update of the code of servers or GUI
|
|
applications. Put your development version of the program in
|
|
`DevelMain', and define `update' to auto-start the program on a
|
|
new thread, and use the `foreign-store' package to access the
|
|
running context across :load/:reloads in GHCi."
|
|
(interactive)
|
|
(haskell-mode-toggle-interactive-prompt-state)
|
|
(unwind-protect
|
|
(with-current-buffer
|
|
(or (get-buffer "DevelMain.hs")
|
|
(if (y-or-n-p
|
|
"You need to open a buffer named DevelMain.hs. Find now?")
|
|
(ido-find-file)
|
|
(error "No DevelMain.hs buffer.")))
|
|
(let ((session (haskell-interactive-session)))
|
|
(let ((process (haskell-interactive-process)))
|
|
(haskell-process-queue-command
|
|
process
|
|
(make-haskell-command
|
|
:state (list :session session
|
|
:process process
|
|
:buffer (current-buffer))
|
|
:go (lambda (state)
|
|
(haskell-process-send-string (plist-get state ':process)
|
|
":l DevelMain"))
|
|
:live (lambda (state buffer)
|
|
(haskell-process-live-build (plist-get state ':process)
|
|
buffer
|
|
nil))
|
|
:complete (lambda (state response)
|
|
(haskell-process-load-complete
|
|
(plist-get state ':session)
|
|
(plist-get state ':process)
|
|
response
|
|
nil
|
|
(plist-get state ':buffer)
|
|
(lambda (ok)
|
|
(when ok
|
|
(haskell-process-queue-without-filters
|
|
(haskell-interactive-process)
|
|
"DevelMain.update")
|
|
(message "DevelMain updated."))))))))))
|
|
(haskell-mode-toggle-interactive-prompt-state t)))
|
|
|
|
(provide 'haskell-load)
|
|
;;; haskell-load.el ends here
|