399 lines
19 KiB
EmacsLisp
399 lines
19 KiB
EmacsLisp
;;; haskell-load.el --- Compiling and loading modules in the GHCi process
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;; Copyright (c) 2014 Chris Done. All rights reserved.
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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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;;; Code:
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(require 'cl-lib)
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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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(defun haskell-process-look-config-changes (session)
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"Checks whether a cabal configuration file has
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changed. Restarts the 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 session (format "Cabal file changed: %s" new-checksum))
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(haskell-session-set-cabal-checksum session
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(haskell-session-get session 'cabal-dir))
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(unless (and haskell-process-prompt-restart-on-cabal-change
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(not (y-or-n-p "Cabal file changed; restart GHCi process? ")))
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(haskell-process-start (haskell-interactive-session))))))
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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 ((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 process "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
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(haskell-process-session process)
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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
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(haskell-process-session process)
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msg)
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(haskell-mode-message-line msg)))))
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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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(cond ((haskell-process-consume process "Ok, modules loaded: \\(.+\\)\\.$")
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(let* ((modules (haskell-process-extract-modules buffer))
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(cursor (haskell-process-response-cursor process)))
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(haskell-process-set-response-cursor process 0)
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(let ((warning-count 0))
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(while (haskell-process-errors-warnings session process buffer)
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(setq warning-count (1+ warning-count)))
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(haskell-process-set-response-cursor process cursor)
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(if (and (not reload)
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haskell-process-reload-with-fbytecode)
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(haskell-process-reload-with-fbytecode process module-buffer)
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(haskell-process-import-modules process (car modules)))
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(haskell-mode-message-line
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(if reload "Reloaded OK." "OK."))
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(when cont
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(condition-case e
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(funcall cont t)
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(error (message "%S" e))
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(quit nil))))))
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((haskell-process-consume process "Failed, modules loaded: \\(.+\\)\\.$")
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(let* ((modules (haskell-process-extract-modules buffer))
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(cursor (haskell-process-response-cursor process)))
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(haskell-process-set-response-cursor process 0)
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(while (haskell-process-errors-warnings session process buffer))
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(haskell-process-set-response-cursor process cursor)
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(if (and (not reload) 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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(haskell-interactive-mode-compile-error session "Compilation failed.")
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(when cont
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(condition-case e
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(funcall cont nil)
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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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"Given a list of MODULES, suggest adding them to the import section."
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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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(let* ((process (haskell-session-process session))
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(suggested-already (haskell-process-suggested-imports process))
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(module (cond ((> (length modules) 1)
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(when (y-or-n-p (format "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 process (cons module suggested-already))
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(when (y-or-n-p (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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(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 (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]+\\)" 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 session "LANGUAGE" (match-string 1 msg) file)))
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((string-match " The \\(qualified \\)?import of[ ][‘`‛]\\([^ ]+\\)['’] is redundant" msg)
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(when haskell-process-suggest-remove-import-lines
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(haskell-process-suggest-remove-import 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 "Warning: orphan instance: " msg)
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(when haskell-process-suggest-no-warn-orphans
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(haskell-process-suggest-pragma session "OPTIONS" "-fno-warn-orphans" 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 session "LANGUAGE" "OverloadedStrings" 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 [‘`‛]\\(.+\\)['’].$" 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 (haskell-interactive-process)))
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(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-ghci haskell-process-path-cabal)
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('cabal-dev haskell-process-path-cabal-dev))
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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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(haskell-process-set-response-cursor process 0)
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(while (haskell-process-errors-warnings 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-ghci haskell-process-path-cabal)
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('cabal-dev haskell-process-path-cabal-dev))
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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 (split-string modules-string ", ")))
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(cons modules modules-string)))
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(defun haskell-process-errors-warnings (session process buffer &optional return-only)
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"Trigger handling type errors or warnings. Either prints the
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messages in the interactive buffer or if CONT is specified,
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passes the error onto that."
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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 (match-string 2 buffer))
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(error-msg (match-string 3 buffer))
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(warning (string-match "^Warning:" error-msg))
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(splice (string-match "^Splicing " error-msg))
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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
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error-msg)))
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(if return-only
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(let* ((location (haskell-process-parse-error (concat file ":" location ": x")))
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(file (plist-get location :file))
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(line (plist-get location :line))
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(col1 (plist-get location :col)))
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(list :file file :line line :col col1 :msg error-msg :type (if warning 'warning 'error)))
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(progn (funcall (cond (warning
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'haskell-interactive-mode-compile-warning)
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(splice
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'haskell-interactive-mode-compile-splice)
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(t 'haskell-interactive-mode-compile-error))
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session final-msg)
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(unless warning
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(haskell-mode-message-line final-msg))
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(haskell-process-trigger-suggestions
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session
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error-msg
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file
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(plist-get (haskell-process-parse-error final-msg) :line))
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t))))))
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(defun haskell-interactive-show-load-message (session type module-name file-name echo th)
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"Show the '(Compiling|Loading) X' message."
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(let ((msg (concat
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(cl-ecase type
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('compiling
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(if haskell-interactive-mode-include-file-name
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(format "Compiling: %s (%s)" module-name file-name)
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(format "Compiling: %s" module-name)))
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('loading (format "Loading: %s" module-name))
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('import-cycle (format "Module has an import cycle: %s" module-name)))
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(if th " [TH]" ""))))
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(haskell-mode-message-line msg)
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(when haskell-interactive-mode-delete-superseded-errors
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(haskell-interactive-mode-delete-compile-messages session file-name))
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(when echo
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(haskell-interactive-mode-echo session msg))))
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;;;###autoload
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(defun haskell-process-reload-devel-main ()
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"Reload the module `DevelMain' and then run
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`DevelMain.update'. This is for doing live update of the code of
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servers or GUI applications. Put your development version of the
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program in `DevelMain', and define `update' to auto-start the
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program on a new thread, and use the `foreign-store' package to
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access the running context across :load/:reloads in GHCi."
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(interactive)
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(with-current-buffer (or (get-buffer "DevelMain.hs")
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(if (y-or-n-p "You need to open a buffer named DevelMain.hs. Find now?")
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(ido-find-file)
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(error "No DevelMain.hs buffer.")))
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(let ((session (haskell-interactive-session)))
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(let ((process (haskell-interactive-process)))
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(haskell-process-queue-command
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process
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(make-haskell-command
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:state (list :session session
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:process process
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:buffer (current-buffer))
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:go (lambda (state)
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(haskell-process-send-string (plist-get state ':process)
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":l DevelMain"))
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:live (lambda (state buffer)
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(haskell-process-live-build (plist-get state ':process)
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buffer
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nil))
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:complete (lambda (state response)
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(haskell-process-load-complete
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(plist-get state ':session)
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(plist-get state ':process)
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response
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nil
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(plist-get state ':buffer)
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(lambda (ok)
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(when ok
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(haskell-process-queue-without-filters
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(haskell-interactive-process)
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"DevelMain.update")
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(message "DevelMain updated.")))))))))))
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(provide 'haskell-load)
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