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945 lines
40 KiB
945 lines
40 KiB
9 years ago
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;;; haskell-commands.el --- Commands that can be run on the process -*- lexical-binding: t -*-
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;;; Commentary:
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;;; This module provides varoius `haskell-mode' and `haskell-interactive-mode'
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;;; specific commands such as show type signature, show info, haskell process
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;;; commands and etc.
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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 'etags)
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(require 'haskell-compat)
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(require 'haskell-process)
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(require 'haskell-font-lock)
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(require 'haskell-interactive-mode)
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(require 'haskell-session)
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(require 'haskell-presentation-mode)
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(require 'haskell-utils)
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(require 'highlight-uses-mode)
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;;;###autoload
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(defun haskell-process-restart ()
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"Restart the inferior Haskell process."
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(interactive)
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(haskell-process-reset (haskell-interactive-process))
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(haskell-process-set (haskell-interactive-process) 'command-queue nil)
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(haskell-process-start (haskell-interactive-session)))
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(defun haskell-process-start (session)
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"Start the inferior Haskell process with a given SESSION.
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You can create new session using function `haskell-session-make'."
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(let ((existing-process (get-process (haskell-session-name (haskell-interactive-session)))))
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(when (processp existing-process)
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(haskell-interactive-mode-echo session "Restarting process ...")
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(haskell-process-set (haskell-session-process session) 'is-restarting t)
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(delete-process existing-process)))
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(let ((process (or (haskell-session-process session)
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(haskell-process-make (haskell-session-name session))))
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(old-queue (haskell-process-get (haskell-session-process session)
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'command-queue)))
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(haskell-session-set-process session process)
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(haskell-process-set-session process session)
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(haskell-process-set-cmd process nil)
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(haskell-process-set (haskell-session-process session) 'is-restarting nil)
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(let ((default-directory (haskell-session-cabal-dir session))
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(log-and-command (haskell-process-compute-process-log-and-command session (haskell-process-type))))
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(haskell-session-prompt-set-current-dir session (not haskell-process-load-or-reload-prompt))
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(haskell-process-set-process
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process
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(progn
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(haskell-process-log (propertize (format "%S" log-and-command)))
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(apply #'start-process (cdr log-and-command)))))
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(progn (set-process-sentinel (haskell-process-process process) 'haskell-process-sentinel)
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(set-process-filter (haskell-process-process process) 'haskell-process-filter))
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(haskell-process-send-startup process)
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(unless (or (eq 'cabal-repl (haskell-process-type))
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(eq 'stack-ghci (haskell-process-type))) ;; Both "cabal repl" and "stack ghci" set the proper CWD.
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(haskell-process-change-dir session
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process
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(haskell-session-current-dir session)))
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(haskell-process-set process 'command-queue
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(append (haskell-process-get (haskell-session-process session)
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'command-queue)
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old-queue))
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process))
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(defun haskell-process-send-startup (process)
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"Send the necessary start messages to haskell 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 process
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:go (lambda (process)
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;; We must set the prompt last, so that this command as a
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;; whole produces only one prompt marker as a response.
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(haskell-process-send-string process "Prelude.putStrLn \"\"")
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(haskell-process-send-string process ":set -v1")
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(haskell-process-send-string process ":set prompt \"\\4\""))
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:live (lambda (process buffer)
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(when (haskell-process-consume
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process
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"^\*\*\* WARNING: \\(.+\\) is writable by someone else, IGNORING!$")
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(let ((path (match-string 1 buffer)))
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(haskell-session-modify
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(haskell-process-session process)
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'ignored-files
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(lambda (files)
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(cl-remove-duplicates (cons path files) :test 'string=)))
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(haskell-interactive-mode-compile-warning
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(haskell-process-session process)
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(format "GHCi is ignoring: %s (run M-x haskell-process-unignore)"
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path)))))
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:complete (lambda (process _)
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(haskell-interactive-mode-echo
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(haskell-process-session process)
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(concat (nth (random (length haskell-process-greetings))
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haskell-process-greetings)
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(when haskell-process-show-debug-tips
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"
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If I break, you can:
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1. Restart: M-x haskell-process-restart
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2. Configure logging: C-h v haskell-process-log (useful for debugging)
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3. General config: M-x customize-mode
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4. Hide these tips: C-h v haskell-process-show-debug-tips")))))))
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(defun haskell-commands-process ()
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"Get the Haskell session, throws an error if not available."
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(or (haskell-session-process (haskell-session-maybe))
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(error "No Haskell session/process associated with this
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buffer. Maybe run M-x haskell-session-change?")))
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;;;###autoload
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(defun haskell-process-clear ()
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"Clear the current process."
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(interactive)
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(haskell-process-reset (haskell-commands-process))
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(haskell-process-set (haskell-commands-process) 'command-queue nil))
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;;;###autoload
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(defun haskell-process-interrupt ()
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"Interrupt the process (SIGINT)."
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(interactive)
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(interrupt-process (haskell-process-process (haskell-commands-process))))
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(defun haskell-process-reload-with-fbytecode (process module-buffer)
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"Query a PROCESS to reload MODULE-BUFFER with -fbyte-code set.
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Restores -fobject-code after reload finished.
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MODULE-BUFFER is the actual Emacs buffer of the module being loaded."
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(haskell-process-queue-without-filters process ":set -fbyte-code")
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;; We prefix the module's filename with a "*", which asks ghci to
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;; ignore any existing object file and interpret the module.
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;; Dependencies will still use their object files as usual.
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(haskell-process-queue-without-filters
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process
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(format ":load \"*%s\""
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(replace-regexp-in-string
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"\""
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"\\\\\""
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(buffer-file-name module-buffer))))
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(haskell-process-queue-without-filters process ":set -fobject-code"))
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(defvar url-http-response-status)
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(defvar url-http-end-of-headers)
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(defvar haskell-cabal-targets-history nil
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"History list for session targets.")
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(defun haskell-process-hayoo-ident (ident)
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;; FIXME Obsolete doc string, CALLBACK is not used.
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"Hayoo for IDENT, return a list of modules asyncronously through CALLBACK."
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;; We need a real/simulated closure, because otherwise these
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;; variables will be unbound when the url-retrieve callback is
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;; called.
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;; TODO: Remove when this code is converted to lexical bindings by
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;; default (Emacs 24.1+)
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(let ((url (format haskell-process-hayoo-query-url (url-hexify-string ident))))
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(with-current-buffer (url-retrieve-synchronously url)
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(if (= 200 url-http-response-status)
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(progn
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(goto-char url-http-end-of-headers)
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(let* ((res (json-read))
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(results (assoc-default 'result res)))
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;; TODO: gather packages as well, and when we choose a
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;; given import, check that we have the package in the
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;; cabal file as well.
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(cl-mapcan (lambda (r)
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;; append converts from vector -> list
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(append (assoc-default 'resultModules r) nil))
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results)))
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(warn "HTTP error %s fetching %s" url-http-response-status url)))))
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(defun haskell-process-hoogle-ident (ident)
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"Hoogle for IDENT, return a list of modules."
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(with-temp-buffer
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(let ((hoogle-error (call-process "hoogle" nil t nil "search" "--exact" ident)))
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(goto-char (point-min))
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(unless (or (/= 0 hoogle-error)
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(looking-at "^No results found")
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(looking-at "^package "))
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(while (re-search-forward "^\\([^ ]+\\).*$" nil t)
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(replace-match "\\1" nil nil))
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(cl-remove-if (lambda (a) (string= "" a))
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(split-string (buffer-string)
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"\n"))))))
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(defun haskell-process-haskell-docs-ident (ident)
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"Search with haskell-docs for IDENT, return a list of modules."
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(cl-remove-if-not
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(lambda (a) (string-match "^[[:upper:]][[:alnum:]_'.]+$" a))
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(split-string
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(with-output-to-string
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(with-current-buffer
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standard-output
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(call-process "haskell-docs"
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nil ; no infile
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t ; output to current buffer (that is string)
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nil ; do not redisplay
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"--modules" ident)))
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"\n")))
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(defun haskell-process-import-modules (process modules)
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"Query PROCESS `:m +' command to import MODULES."
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(when haskell-process-auto-import-loaded-modules
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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 (cons process modules)
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:go (lambda (state)
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(haskell-process-send-string
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(car state)
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(format ":m + %s" (mapconcat 'identity (cdr state) " "))))))))
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;;;###autoload
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(defun haskell-describe (ident)
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"Describe the given identifier IDENT."
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(interactive (list (read-from-minibuffer "Describe identifier: "
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(haskell-ident-at-point))))
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(let ((results (read (shell-command-to-string
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(concat "haskell-docs --sexp "
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ident)))))
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(help-setup-xref (list #'haskell-describe ident)
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(called-interactively-p 'interactive))
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(save-excursion
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(with-help-window (help-buffer)
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(with-current-buffer (help-buffer)
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(if results
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(cl-loop for result in results
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do (insert (propertize ident 'font-lock-face
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'((:inherit font-lock-type-face
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:underline t)))
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" is defined in "
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(let ((module (cadr (assoc 'module result))))
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(if module
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(concat module " ")
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""))
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(cadr (assoc 'package result))
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"\n\n")
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do (let ((type (cadr (assoc 'type result))))
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(when type
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(insert (haskell-fontify-as-mode type 'haskell-mode)
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"\n")))
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do (let ((args (cadr (assoc 'type results))))
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(cl-loop for arg in args
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do (insert arg "\n"))
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(insert "\n"))
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do (insert (cadr (assoc 'documentation result)))
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do (insert "\n\n"))
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(insert "No results for " ident)))))))
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;;;###autoload
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(defun haskell-rgrep (&optional prompt)
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"Grep the effective project for the symbol at point.
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Very useful for codebase navigation.
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Prompts for an arbitrary regexp given a prefix arg PROMPT."
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(interactive "P")
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(let ((sym (if prompt
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(read-from-minibuffer "Look for: ")
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(haskell-ident-at-point))))
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||
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(rgrep sym
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||
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"*.hs" ;; TODO: common Haskell extensions.
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||
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(haskell-session-current-dir (haskell-interactive-session)))))
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||
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;;;###autoload
|
||
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(defun haskell-process-do-info (&optional prompt-value)
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"Print info on the identifier at point.
|
||
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If PROMPT-VALUE is non-nil, request identifier via mini-buffer."
|
||
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(interactive "P")
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||
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(let ((at-point (haskell-ident-at-point)))
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||
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(when (or prompt-value at-point)
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||
|
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(let* ((ident (replace-regexp-in-string
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||
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"^!\\([A-Z_a-z]\\)"
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||
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"\\1"
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||
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(if prompt-value
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||
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(read-from-minibuffer "Info: " at-point)
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||
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at-point)))
|
||
|
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(modname (unless prompt-value
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||
|
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(haskell-utils-parse-import-statement-at-point)))
|
||
|
|
(command (cond
|
||
|
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(modname
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||
|
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(format ":browse! %s" modname))
|
||
|
|
((string= ident "") ; For the minibuffer input case
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||
|
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nil)
|
||
|
|
(t (format (if (string-match "^[a-zA-Z_]" ident)
|
||
|
|
":info %s"
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||
|
|
":info (%s)")
|
||
|
|
(or ident
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||
|
|
at-point))))))
|
||
|
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(when command
|
||
|
|
(haskell-process-show-repl-response command))))))
|
||
|
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|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-process-do-type (&optional insert-value)
|
||
|
|
;; FIXME insert value functionallity seems to be missing.
|
||
|
|
"Print the type of the given expression.
|
||
|
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|
||
|
|
Given INSERT-VALUE prefix indicates that result type signature
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||
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should be inserted."
|
||
|
|
(interactive "P")
|
||
|
|
(if insert-value
|
||
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(haskell-process-insert-type)
|
||
|
|
(let* ((expr
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||
|
|
(if (use-region-p)
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||
|
|
(buffer-substring-no-properties (region-beginning) (region-end))
|
||
|
|
(haskell-ident-at-point)))
|
||
|
|
(expr-okay (and expr
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||
|
|
(not (string-match-p "\\`[[:space:]]*\\'" expr))
|
||
|
|
(not (string-match-p "\n" expr)))))
|
||
|
|
;; No newlines in expressions, and surround with parens if it
|
||
|
|
;; might be a slice expression
|
||
|
|
(when expr-okay
|
||
|
|
(haskell-process-show-repl-response
|
||
|
|
(format
|
||
|
|
(if (or (string-match-p "\\`(" expr)
|
||
|
|
(string-match-p "\\`[_[:alpha:]]" expr))
|
||
|
|
":type %s"
|
||
|
|
":type (%s)")
|
||
|
|
expr))))))
|
||
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|
|
;;;###autoload
|
||
|
|
(defun haskell-mode-jump-to-def-or-tag (&optional _next-p)
|
||
|
|
;; FIXME NEXT-P arg is not used
|
||
|
|
"Jump to the definition.
|
||
|
|
Jump to definition of identifier at point by consulting GHCi, or
|
||
|
|
tag table as fallback.
|
||
|
|
|
||
|
|
Remember: If GHCi is busy doing something, this will delay, but
|
||
|
|
it will always be accurate, in contrast to tags, which always
|
||
|
|
work but are not always accurate.
|
||
|
|
If the definition or tag is found, the location from which you jumped
|
||
|
|
will be pushed onto `xref--marker-ring', so you can return to that
|
||
|
|
position with `xref-pop-marker-stack'."
|
||
|
|
(interactive "P")
|
||
|
|
(let ((initial-loc (point-marker))
|
||
|
|
(loc (haskell-mode-find-def (haskell-ident-at-point))))
|
||
|
|
(if loc
|
||
|
|
(haskell-mode-handle-generic-loc loc)
|
||
|
|
(call-interactively 'haskell-mode-tag-find))
|
||
|
|
(unless (equal initial-loc (point-marker))
|
||
|
|
(xref-push-marker-stack initial-loc))))
|
||
|
|
|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-mode-goto-loc ()
|
||
|
|
"Go to the location of the thing at point.
|
||
|
|
Requires the :loc-at command from GHCi."
|
||
|
|
(interactive)
|
||
|
|
(let ((loc (haskell-mode-loc-at)))
|
||
|
|
(when loc
|
||
|
|
(haskell-mode-goto-span loc))))
|
||
|
|
|
||
|
|
(defun haskell-mode-goto-span (span)
|
||
|
|
"Jump to the SPAN, whatever file and line and column it needs to get there."
|
||
|
|
(xref-push-marker-stack)
|
||
|
|
(find-file (expand-file-name (plist-get span :path)
|
||
|
|
(haskell-session-cabal-dir (haskell-interactive-session))))
|
||
|
|
(goto-char (point-min))
|
||
|
|
(forward-line (1- (plist-get span :start-line)))
|
||
|
|
(forward-char (plist-get span :start-col)))
|
||
|
|
|
||
|
|
(defun haskell-process-insert-type ()
|
||
|
|
"Get the identifer at the point and insert its type.
|
||
|
|
Use GHCi's :type if it's possible."
|
||
|
|
(let ((ident (haskell-ident-at-point)))
|
||
|
|
(when ident
|
||
|
|
(let ((process (haskell-interactive-process))
|
||
|
|
(query (format (if (string-match "^[_[:lower:][:upper:]]" ident)
|
||
|
|
":type %s"
|
||
|
|
":type (%s)")
|
||
|
|
ident)))
|
||
|
|
(haskell-process-queue-command
|
||
|
|
process
|
||
|
|
(make-haskell-command
|
||
|
|
:state (list process query (current-buffer))
|
||
|
|
:go (lambda (state)
|
||
|
|
(haskell-process-send-string (nth 0 state)
|
||
|
|
(nth 1 state)))
|
||
|
|
:complete (lambda (state response)
|
||
|
|
(cond
|
||
|
|
;; TODO: Generalize this into a function.
|
||
|
|
((or (string-match "^Top level" response)
|
||
|
|
(string-match "^<interactive>" response))
|
||
|
|
(message response))
|
||
|
|
(t
|
||
|
|
(with-current-buffer (nth 2 state)
|
||
|
|
(goto-char (line-beginning-position))
|
||
|
|
(insert (format "%s\n" (replace-regexp-in-string "\n$" "" response)))))))))))))
|
||
|
|
|
||
|
|
(defun haskell-mode-find-def (ident)
|
||
|
|
;; TODO Check if it possible to exploit `haskell-process-do-info'
|
||
|
|
"Find definition location of identifier IDENT.
|
||
|
|
Uses the GHCi process to find the location. Returns nil if it
|
||
|
|
can't find the identifier or the identifier isn't a string.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
|
||
|
|
(library <package> <module>)
|
||
|
|
(file <path> <line> <col>)
|
||
|
|
(module <name>)
|
||
|
|
nil"
|
||
|
|
(when (stringp ident)
|
||
|
|
(let ((reply (haskell-process-queue-sync-request
|
||
|
|
(haskell-interactive-process)
|
||
|
|
(format (if (string-match "^[a-zA-Z_]" ident)
|
||
|
|
":info %s"
|
||
|
|
":info (%s)")
|
||
|
|
ident))))
|
||
|
|
(let ((match (string-match "-- Defined \\(at\\|in\\) \\(.+\\)$" reply)))
|
||
|
|
(when match
|
||
|
|
(let ((defined (match-string 2 reply)))
|
||
|
|
(let ((match (string-match "\\(.+?\\):\\([0-9]+\\):\\([0-9]+\\)$" defined)))
|
||
|
|
(cond
|
||
|
|
(match
|
||
|
|
(list 'file
|
||
|
|
(expand-file-name (match-string 1 defined)
|
||
|
|
(haskell-session-current-dir (haskell-interactive-session)))
|
||
|
|
(string-to-number (match-string 2 defined))
|
||
|
|
(string-to-number (match-string 3 defined))))
|
||
|
|
(t
|
||
|
|
(let ((match (string-match "`\\(.+?\\):\\(.+?\\)'$" defined)))
|
||
|
|
(if match
|
||
|
|
(list 'library
|
||
|
|
(match-string 1 defined)
|
||
|
|
(match-string 2 defined))
|
||
|
|
(let ((match (string-match "`\\(.+?\\)'$" defined)))
|
||
|
|
(if match
|
||
|
|
(list 'module
|
||
|
|
(match-string 1 defined)))))))))))))))
|
||
|
|
|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-mode-jump-to-def (ident)
|
||
|
|
"Jump to definition of identifier IDENT at point."
|
||
|
|
(interactive (list (haskell-ident-at-point)))
|
||
|
|
(let ((loc (haskell-mode-find-def ident)))
|
||
|
|
(when loc
|
||
|
|
(haskell-mode-handle-generic-loc loc))))
|
||
|
|
|
||
|
|
(defun haskell-mode-handle-generic-loc (loc)
|
||
|
|
"Either jump to or echo a generic location LOC.
|
||
|
|
Either a file or a library."
|
||
|
|
(cl-case (car loc)
|
||
|
|
(file (haskell-mode-jump-to-loc (cdr loc)))
|
||
|
|
(library (message "Defined in `%s' (%s)."
|
||
|
|
(elt loc 2)
|
||
|
|
(elt loc 1)))
|
||
|
|
(module (message "Defined in `%s'."
|
||
|
|
(elt loc 1)))))
|
||
|
|
|
||
|
|
(defun haskell-mode-loc-at ()
|
||
|
|
"Get the location at point.
|
||
|
|
Requires the :loc-at command from GHCi."
|
||
|
|
(let ((pos (or (when (region-active-p)
|
||
|
|
(cons (region-beginning)
|
||
|
|
(region-end)))
|
||
|
|
(haskell-spanable-pos-at-point)
|
||
|
|
(cons (point)
|
||
|
|
(point)))))
|
||
|
|
(when pos
|
||
|
|
(let ((reply (haskell-process-queue-sync-request
|
||
|
|
(haskell-interactive-process)
|
||
|
|
(save-excursion
|
||
|
|
(format ":loc-at %s %d %d %d %d %s"
|
||
|
|
(buffer-file-name)
|
||
|
|
(progn (goto-char (car pos))
|
||
|
|
(line-number-at-pos))
|
||
|
|
(1+ (current-column)) ;; GHC uses 1-based columns.
|
||
|
|
(progn (goto-char (cdr pos))
|
||
|
|
(line-number-at-pos))
|
||
|
|
(1+ (current-column)) ;; GHC uses 1-based columns.
|
||
|
|
(buffer-substring-no-properties (car pos)
|
||
|
|
(cdr pos)))))))
|
||
|
|
(if reply
|
||
|
|
(if (string-match "\\(.*?\\):(\\([0-9]+\\),\\([0-9]+\\))-(\\([0-9]+\\),\\([0-9]+\\))"
|
||
|
|
reply)
|
||
|
|
(list :path (match-string 1 reply)
|
||
|
|
:start-line (string-to-number (match-string 2 reply))
|
||
|
|
;; ;; GHC uses 1-based columns.
|
||
|
|
:start-col (1- (string-to-number (match-string 3 reply)))
|
||
|
|
:end-line (string-to-number (match-string 4 reply))
|
||
|
|
;; GHC uses 1-based columns.
|
||
|
|
:end-col (1- (string-to-number (match-string 5 reply))))
|
||
|
|
(error (propertize reply 'face 'compilation-error)))
|
||
|
|
(error (propertize "No reply. Is :loc-at supported?"
|
||
|
|
'face 'compilation-error)))))))
|
||
|
|
|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-process-cd (&optional _not-interactive)
|
||
|
|
;; FIXME optional arg is not used
|
||
|
|
"Change directory."
|
||
|
|
(interactive)
|
||
|
|
(let* ((session (haskell-interactive-session))
|
||
|
|
(dir (haskell-session-prompt-set-current-dir session)))
|
||
|
|
(haskell-process-log
|
||
|
|
(propertize (format "Changing directory to %s ...\n" dir)
|
||
|
|
'face font-lock-comment-face))
|
||
|
|
(haskell-process-change-dir session
|
||
|
|
(haskell-interactive-process)
|
||
|
|
dir)))
|
||
|
|
|
||
|
|
(defun haskell-session-buffer-default-dir (session &optional buffer)
|
||
|
|
"Try to deduce a sensible default directory for SESSION and BUFFER,
|
||
|
|
of which the latter defaults to the current buffer."
|
||
|
|
(or (haskell-session-get session 'current-dir)
|
||
|
|
(haskell-session-get session 'cabal-dir)
|
||
|
|
(if (buffer-file-name buffer)
|
||
|
|
(file-name-directory (buffer-file-name buffer))
|
||
|
|
"~/")))
|
||
|
|
|
||
|
|
(defun haskell-session-prompt-set-current-dir (session &optional use-default)
|
||
|
|
"Prompt for the current directory.
|
||
|
|
Return current working directory for SESSION."
|
||
|
|
(let ((default (haskell-session-buffer-default-dir session)))
|
||
|
|
(haskell-session-set-current-dir
|
||
|
|
session
|
||
|
|
(if use-default
|
||
|
|
default
|
||
|
|
(haskell-utils-read-directory-name "Set current directory: " default))))
|
||
|
|
(haskell-session-get session 'current-dir))
|
||
|
|
|
||
|
|
(defun haskell-process-change-dir (session process dir)
|
||
|
|
"Change SESSION's current directory.
|
||
|
|
Query PROCESS to `:cd` to directory DIR."
|
||
|
|
(haskell-process-queue-command
|
||
|
|
process
|
||
|
|
(make-haskell-command
|
||
|
|
:state (list session process dir)
|
||
|
|
:go
|
||
|
|
(lambda (state)
|
||
|
|
(haskell-process-send-string
|
||
|
|
(cadr state) (format ":cd %s" (cl-caddr state))))
|
||
|
|
|
||
|
|
:complete
|
||
|
|
(lambda (state _)
|
||
|
|
(haskell-session-set-current-dir (car state) (cl-caddr state))
|
||
|
|
(haskell-interactive-mode-echo (car state)
|
||
|
|
(format "Changed directory: %s"
|
||
|
|
(cl-caddr state)))))))
|
||
|
|
|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-process-cabal-macros ()
|
||
|
|
"Send the cabal macros string."
|
||
|
|
(interactive)
|
||
|
|
(haskell-process-queue-without-filters (haskell-interactive-process)
|
||
|
|
":set -optP-include -optPdist/build/autogen/cabal_macros.h"))
|
||
|
|
|
||
|
|
(defun haskell-process-do-try-info (sym)
|
||
|
|
"Get info of SYM and echo in the minibuffer."
|
||
|
|
(let ((process (haskell-interactive-process)))
|
||
|
|
(haskell-process-queue-command
|
||
|
|
process
|
||
|
|
(make-haskell-command
|
||
|
|
:state (cons process sym)
|
||
|
|
:go (lambda (state)
|
||
|
|
(haskell-process-send-string
|
||
|
|
(car state)
|
||
|
|
(if (string-match "^[A-Za-z_]" (cdr state))
|
||
|
|
(format ":info %s" (cdr state))
|
||
|
|
(format ":info (%s)" (cdr state)))))
|
||
|
|
:complete (lambda (_state response)
|
||
|
|
(unless (or (string-match "^Top level" response)
|
||
|
|
(string-match "^<interactive>" response))
|
||
|
|
(haskell-mode-message-line response)))))))
|
||
|
|
|
||
|
|
(defun haskell-process-do-try-type (sym)
|
||
|
|
"Get type of SYM and echo in the minibuffer."
|
||
|
|
(let ((process (haskell-interactive-process)))
|
||
|
|
(haskell-process-queue-command
|
||
|
|
process
|
||
|
|
(make-haskell-command
|
||
|
|
:state (cons process sym)
|
||
|
|
:go (lambda (state)
|
||
|
|
(haskell-process-send-string
|
||
|
|
(car state)
|
||
|
|
(if (string-match "^[A-Za-z_]" (cdr state))
|
||
|
|
(format ":type %s" (cdr state))
|
||
|
|
(format ":type (%s)" (cdr state)))))
|
||
|
|
:complete (lambda (_state response)
|
||
|
|
(unless (or (string-match "^Top level" response)
|
||
|
|
(string-match "^<interactive>" response))
|
||
|
|
(haskell-mode-message-line response)))))))
|
||
|
|
|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-mode-show-type-at (&optional insert-value)
|
||
|
|
"Show type of the thing at point or within active region asynchronously.
|
||
|
|
This function requires GHCi-ng and `:set +c` option enabled by
|
||
|
|
default (please follow GHCi-ng README available at URL
|
||
|
|
`https://github.com/chrisdone/ghci-ng').
|
||
|
|
|
||
|
|
\\<haskell-interactive-mode-map>
|
||
|
|
To make this function works sometimes you need to load the file in REPL
|
||
|
|
first using command `haskell-process-load-or-reload' bound to
|
||
|
|
\\[haskell-process-load-or-reload].
|
||
|
|
|
||
|
|
Optional argument INSERT-VALUE indicates that
|
||
|
|
recieved type signature should be inserted (but only if nothing
|
||
|
|
happened since function invocation)."
|
||
|
|
(interactive "P")
|
||
|
|
(let* ((pos (haskell-command-capture-expr-bounds))
|
||
|
|
(req (haskell-utils-compose-type-at-command pos))
|
||
|
|
(process (haskell-interactive-process))
|
||
|
|
(buf (current-buffer))
|
||
|
|
(pos-reg (cons pos (region-active-p))))
|
||
|
|
(haskell-process-queue-command
|
||
|
|
process
|
||
|
|
(make-haskell-command
|
||
|
|
:state (list process req buf insert-value pos-reg)
|
||
|
|
:go
|
||
|
|
(lambda (state)
|
||
|
|
(let* ((prc (car state))
|
||
|
|
(req (nth 1 state)))
|
||
|
|
(haskell-utils-async-watch-changes)
|
||
|
|
(haskell-process-send-string prc req)))
|
||
|
|
:complete
|
||
|
|
(lambda (state response)
|
||
|
|
(let* ((init-buffer (nth 2 state))
|
||
|
|
(insert-value (nth 3 state))
|
||
|
|
(pos-reg (nth 4 state))
|
||
|
|
(wrap (cdr pos-reg))
|
||
|
|
(min-pos (caar pos-reg))
|
||
|
|
(max-pos (cdar pos-reg))
|
||
|
|
(sig (haskell-utils-reduce-string response))
|
||
|
|
(res-type (haskell-utils-parse-repl-response sig)))
|
||
|
|
|
||
|
|
(cl-case res-type
|
||
|
|
;; neither popup presentation buffer
|
||
|
|
;; nor insert response in error case
|
||
|
|
('unknown-command
|
||
|
|
(message
|
||
|
|
(concat
|
||
|
|
"This command requires GHCi-ng. "
|
||
|
|
"Please read command description for details.")))
|
||
|
|
('option-missing
|
||
|
|
(message
|
||
|
|
(concat
|
||
|
|
"Could not infer type signature. "
|
||
|
|
"You need to load file first. "
|
||
|
|
"Also :set +c is required. "
|
||
|
|
"Please read command description for details.")))
|
||
|
|
('interactive-error (message "Wrong REPL response: %s" sig))
|
||
|
|
(otherwise
|
||
|
|
(if insert-value
|
||
|
|
;; Only insert type signature and do not present it
|
||
|
|
(if (= (length haskell-utils-async-post-command-flag) 1)
|
||
|
|
(if wrap
|
||
|
|
;; Handle region case
|
||
|
|
(progn
|
||
|
|
(deactivate-mark)
|
||
|
|
(save-excursion
|
||
|
|
(delete-region min-pos max-pos)
|
||
|
|
(goto-char min-pos)
|
||
|
|
(insert (concat "(" sig ")"))))
|
||
|
|
;; Non-region cases
|
||
|
|
(haskell-command-insert-type-signature sig))
|
||
|
|
;; Some commands registered, prevent insertion
|
||
|
|
(let* ((rev (reverse haskell-utils-async-post-command-flag))
|
||
|
|
(cs (format "%s" (cdr rev))))
|
||
|
|
(message
|
||
|
|
(concat
|
||
|
|
"Type signature insertion was prevented. "
|
||
|
|
"These commands were registered:"
|
||
|
|
cs))))
|
||
|
|
;; Present the result only when response is valid and not asked
|
||
|
|
;; to insert result
|
||
|
|
(haskell-command-echo-or-present response)))
|
||
|
|
|
||
|
|
(haskell-utils-async-stop-watching-changes init-buffer))))))))
|
||
|
|
|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-process-generate-tags (&optional and-then-find-this-tag)
|
||
|
|
"Regenerate the TAGS table.
|
||
|
|
If optional AND-THEN-FIND-THIS-TAG argument is present it is used with
|
||
|
|
function `xref-find-definitions' after new table was generated."
|
||
|
|
(interactive)
|
||
|
|
(let ((process (haskell-interactive-process)))
|
||
|
|
(haskell-process-queue-command
|
||
|
|
process
|
||
|
|
(make-haskell-command
|
||
|
|
:state (cons process and-then-find-this-tag)
|
||
|
|
:go (lambda (state)
|
||
|
|
(if (eq system-type 'windows-nt)
|
||
|
|
(haskell-process-send-string
|
||
|
|
(car state)
|
||
|
|
(format ":!hasktags --output=\"%s\\TAGS\" -x -e \"%s\""
|
||
|
|
(haskell-session-cabal-dir (haskell-process-session (car state)))
|
||
|
|
(haskell-session-cabal-dir (haskell-process-session (car state)))))
|
||
|
|
(haskell-process-send-string
|
||
|
|
(car state)
|
||
|
|
(format ":!cd %s && %s | %s"
|
||
|
|
(haskell-session-cabal-dir
|
||
|
|
(haskell-process-session (car state)))
|
||
|
|
"find . -type f \\( -name '*.hs' -or -name '*.lhs' -or -name '*.hsc' \\) -not \\( -name '#*' -or -name '.*' \\) -print0"
|
||
|
|
"xargs -0 hasktags -e -x"))))
|
||
|
|
:complete (lambda (state _response)
|
||
|
|
(when (cdr state)
|
||
|
|
(let ((session-tags
|
||
|
|
(haskell-session-tags-filename
|
||
|
|
(haskell-process-session (car state)))))
|
||
|
|
(add-to-list 'tags-table-list session-tags)
|
||
|
|
(setq tags-file-name nil))
|
||
|
|
(xref-find-definitions (cdr state)))
|
||
|
|
(haskell-mode-message-line "Tags generated."))))))
|
||
|
|
|
||
|
|
(defun haskell-process-add-cabal-autogen ()
|
||
|
|
"Add cabal's autogen dir to the GHCi search path.
|
||
|
|
Add <cabal-project-dir>/dist/build/autogen/ to GHCi seatch path.
|
||
|
|
This allows modules such as 'Path_...', generated by cabal, to be
|
||
|
|
loaded by GHCi."
|
||
|
|
(unless (eq 'cabal-repl (haskell-process-type)) ;; redundant with "cabal repl"
|
||
|
|
(let*
|
||
|
|
((session (haskell-interactive-session))
|
||
|
|
(cabal-dir (haskell-session-cabal-dir session))
|
||
|
|
(ghci-gen-dir (format "%sdist/build/autogen/" cabal-dir)))
|
||
|
|
(haskell-process-queue-without-filters
|
||
|
|
(haskell-interactive-process)
|
||
|
|
(format ":set -i%s" ghci-gen-dir)))))
|
||
|
|
|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-process-unignore ()
|
||
|
|
"Unignore any ignored files.
|
||
|
|
Do not ignore files that were specified as being ignored by the
|
||
|
|
inferior GHCi process."
|
||
|
|
(interactive)
|
||
|
|
(let ((session (haskell-interactive-session))
|
||
|
|
(changed nil))
|
||
|
|
(if (null (haskell-session-get session
|
||
|
|
'ignored-files))
|
||
|
|
(message "Nothing to unignore!")
|
||
|
|
(cl-loop for file in (haskell-session-get session
|
||
|
|
'ignored-files)
|
||
|
|
do (cl-case (read-event
|
||
|
|
(propertize (format "Set permissions? %s (y, n, v: stop and view file)"
|
||
|
|
file)
|
||
|
|
'face 'minibuffer-prompt))
|
||
|
|
(?y
|
||
|
|
(haskell-process-unignore-file session file)
|
||
|
|
(setq changed t))
|
||
|
|
(?v
|
||
|
|
(find-file file)
|
||
|
|
(cl-return))))
|
||
|
|
(when (and changed
|
||
|
|
(y-or-n-p "Restart GHCi process now? "))
|
||
|
|
(haskell-process-restart)))))
|
||
|
|
|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-session-change-target (target)
|
||
|
|
"Set the build TARGET for cabal REPL."
|
||
|
|
(interactive
|
||
|
|
(list
|
||
|
|
(completing-read "New build target: " (haskell-cabal-enum-targets)
|
||
|
|
nil nil nil 'haskell-cabal-targets-history)))
|
||
|
|
(let* ((session haskell-session)
|
||
|
|
(old-target (haskell-session-get session 'target)))
|
||
|
|
(when session
|
||
|
|
(haskell-session-set-target session target)
|
||
|
|
(when (and (not (string= old-target target))
|
||
|
|
(y-or-n-p "Target changed, restart haskell process?"))
|
||
|
|
(haskell-process-start session)))))
|
||
|
|
|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-mode-stylish-buffer ()
|
||
|
|
"Apply stylish-haskell to the current buffer."
|
||
|
|
(interactive)
|
||
|
|
(let ((column (current-column))
|
||
|
|
(line (line-number-at-pos)))
|
||
|
|
(haskell-mode-buffer-apply-command "stylish-haskell")
|
||
|
|
(goto-char (point-min))
|
||
|
|
(forward-line (1- line))
|
||
|
|
(goto-char (+ column (point)))))
|
||
|
|
|
||
|
|
(defun haskell-mode-buffer-apply-command (cmd)
|
||
|
|
"Execute shell command CMD with current buffer as input and output.
|
||
|
|
Use buffer as input and replace the whole buffer with the
|
||
|
|
output. If CMD fails the buffer remains unchanged."
|
||
|
|
(set-buffer-modified-p t)
|
||
|
|
(let* ((chomp (lambda (str)
|
||
|
|
(while (string-match "\\`\n+\\|^\\s-+\\|\\s-+$\\|\n+\\'" str)
|
||
|
|
(setq str (replace-match "" t t str)))
|
||
|
|
str))
|
||
|
|
(_errout (lambda (fmt &rest args)
|
||
|
|
(let* ((warning-fill-prefix " "))
|
||
|
|
(display-warning cmd (apply 'format fmt args) :warning))))
|
||
|
|
(filename (buffer-file-name (current-buffer)))
|
||
|
|
(cmd-prefix (replace-regexp-in-string " .*" "" cmd))
|
||
|
|
(tmp-file (make-temp-file cmd-prefix))
|
||
|
|
(err-file (make-temp-file cmd-prefix))
|
||
|
|
(default-directory (if (and (boundp 'haskell-session)
|
||
|
|
haskell-session)
|
||
|
|
(haskell-session-cabal-dir haskell-session)
|
||
|
|
default-directory))
|
||
|
|
(_errcode (with-temp-file tmp-file
|
||
|
|
(call-process cmd filename
|
||
|
|
(list (current-buffer) err-file) nil)))
|
||
|
|
(stderr-output
|
||
|
|
(with-temp-buffer
|
||
|
|
(insert-file-contents err-file)
|
||
|
|
(funcall chomp (buffer-substring-no-properties (point-min) (point-max)))))
|
||
|
|
(stdout-output
|
||
|
|
(with-temp-buffer
|
||
|
|
(insert-file-contents tmp-file)
|
||
|
|
(buffer-substring-no-properties (point-min) (point-max)))))
|
||
|
|
(if (string= "" stderr-output)
|
||
|
|
(if (string= "" stdout-output)
|
||
|
|
(message "Error: %s produced no output, leaving buffer alone" cmd)
|
||
|
|
(save-restriction
|
||
|
|
(widen)
|
||
|
|
;; command successful, insert file with replacement to preserve
|
||
|
|
;; markers.
|
||
|
|
(insert-file-contents tmp-file nil nil nil t)))
|
||
|
|
(progn
|
||
|
|
;; non-null stderr, command must have failed
|
||
|
|
(message "Error: %s ended with errors, leaving buffer alone" cmd)
|
||
|
|
;; use (warning-minimum-level :debug) to see this
|
||
|
|
(display-warning cmd stderr-output :debug)))
|
||
|
|
(delete-file tmp-file)
|
||
|
|
(delete-file err-file)))
|
||
|
|
|
||
|
|
;;;###autoload
|
||
|
|
(defun haskell-mode-find-uses ()
|
||
|
|
"Find use cases of the identifier at point and highlight them all."
|
||
|
|
(interactive)
|
||
|
|
(let ((spans (haskell-mode-uses-at)))
|
||
|
|
(unless (null spans)
|
||
|
|
(highlight-uses-mode 1)
|
||
|
|
(cl-loop for span in spans
|
||
|
|
do (haskell-mode-make-use-highlight span)))))
|
||
|
|
|
||
|
|
(defun haskell-mode-make-use-highlight (span)
|
||
|
|
"Make a highlight overlay at the given SPAN."
|
||
|
|
(save-window-excursion
|
||
|
|
(save-excursion
|
||
|
|
(haskell-mode-goto-span span)
|
||
|
|
(save-excursion
|
||
|
|
(highlight-uses-mode-highlight
|
||
|
|
(progn
|
||
|
|
(goto-char (point-min))
|
||
|
|
(forward-line (1- (plist-get span :start-line)))
|
||
|
|
(forward-char (plist-get span :start-col))
|
||
|
|
(point))
|
||
|
|
(progn
|
||
|
|
(goto-char (point-min))
|
||
|
|
(forward-line (1- (plist-get span :end-line)))
|
||
|
|
(forward-char (plist-get span :end-col))
|
||
|
|
(point)))))))
|
||
|
|
|
||
|
|
(defun haskell-mode-uses-at ()
|
||
|
|
"Get the locations of use cases for the ident at point.
|
||
|
|
Requires the :uses command from GHCi."
|
||
|
|
(let ((pos (or (when (region-active-p)
|
||
|
|
(cons (region-beginning)
|
||
|
|
(region-end)))
|
||
|
|
(haskell-ident-pos-at-point)
|
||
|
|
(cons (point)
|
||
|
|
(point)))))
|
||
|
|
(when pos
|
||
|
|
(let ((reply (haskell-process-queue-sync-request
|
||
|
|
(haskell-interactive-process)
|
||
|
|
(save-excursion
|
||
|
|
(format ":uses %s %d %d %d %d %s"
|
||
|
|
(buffer-file-name)
|
||
|
|
(progn (goto-char (car pos))
|
||
|
|
(line-number-at-pos))
|
||
|
|
(1+ (current-column)) ;; GHC uses 1-based columns.
|
||
|
|
(progn (goto-char (cdr pos))
|
||
|
|
(line-number-at-pos))
|
||
|
|
(1+ (current-column)) ;; GHC uses 1-based columns.
|
||
|
|
(buffer-substring-no-properties (car pos)
|
||
|
|
(cdr pos)))))))
|
||
|
|
(if reply
|
||
|
|
(let ((lines (split-string reply "\n" t)))
|
||
|
|
(cl-remove-if
|
||
|
|
#'null
|
||
|
|
(mapcar (lambda (line)
|
||
|
|
(if (string-match "\\(.*?\\):(\\([0-9]+\\),\\([0-9]+\\))-(\\([0-9]+\\),\\([0-9]+\\))"
|
||
|
|
line)
|
||
|
|
(list :path (match-string 1 line)
|
||
|
|
:start-line (string-to-number (match-string 2 line))
|
||
|
|
;; ;; GHC uses 1-based columns.
|
||
|
|
:start-col (1- (string-to-number (match-string 3 line)))
|
||
|
|
:end-line (string-to-number (match-string 4 line))
|
||
|
|
;; GHC uses 1-based columns.
|
||
|
|
:end-col (1- (string-to-number (match-string 5 line))))
|
||
|
|
(error (propertize line 'face 'compilation-error))))
|
||
|
|
lines)))
|
||
|
|
(error (propertize "No reply. Is :uses supported?"
|
||
|
|
'face 'compilation-error)))))))
|
||
|
|
|
||
|
|
(defun haskell-command-echo-or-present (msg)
|
||
|
|
"Present message in some manner depending on configuration.
|
||
|
|
If variable `haskell-process-use-presentation-mode' is NIL it will output
|
||
|
|
modified message MSG to echo area."
|
||
|
|
(if haskell-process-use-presentation-mode
|
||
|
|
(let ((session (haskell-process-session (haskell-interactive-process))))
|
||
|
|
(haskell-presentation-present session msg))
|
||
|
|
(let ((m (haskell-utils-reduce-string msg)))
|
||
|
|
(message m))))
|
||
|
|
|
||
|
|
(defun haskell-command-capture-expr-bounds ()
|
||
|
|
"Capture position bounds of expression at point.
|
||
|
|
If there is an active region then it returns region
|
||
|
|
bounds. Otherwise it uses `haskell-spanable-pos-at-point` to
|
||
|
|
capture identifier bounds. If latter function returns NIL this function
|
||
|
|
will return cons cell where min and max positions both are equal
|
||
|
|
to point."
|
||
|
|
(or (when (region-active-p)
|
||
|
|
(cons (region-beginning)
|
||
|
|
(region-end)))
|
||
|
|
(haskell-spanable-pos-at-point)
|
||
|
|
(cons (point) (point))))
|
||
|
|
|
||
|
|
(defun haskell-command-insert-type-signature (signature)
|
||
|
|
"Insert type signature.
|
||
|
|
In case of active region is present, wrap it by parentheses and
|
||
|
|
append SIGNATURE to original expression. Otherwise tries to
|
||
|
|
carefully insert SIGNATURE above identifier at point. Removes
|
||
|
|
newlines and extra whitespace in signature before insertion."
|
||
|
|
(let* ((ident-pos (or (haskell-ident-pos-at-point)
|
||
|
|
(cons (point) (point))))
|
||
|
|
(min-pos (car ident-pos))
|
||
|
|
(sig (haskell-utils-reduce-string signature)))
|
||
|
|
(save-excursion
|
||
|
|
(goto-char min-pos)
|
||
|
|
(let ((col (current-column)))
|
||
|
|
(insert sig "\n")
|
||
|
|
(indent-to col)))))
|
||
|
|
|
||
|
|
(provide 'haskell-commands)
|
||
|
|
;;; haskell-commands.el ends here
|