155 lines
6 KiB
EmacsLisp
155 lines
6 KiB
EmacsLisp
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;;; haskell-compile.el --- Haskell/GHC compilation sub-mode -*- lexical-binding: t -*-
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;; Copyright (C) 2013 Herbert Valerio Riedel
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;; Author: Herbert Valerio Riedel <hvr@gnu.org>
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;; This file is not part of GNU Emacs.
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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 of the License, or
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;; (at your option) 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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;; Simple GHC-centric compilation sub-mode; see info node
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;; `(haskell-mode)compilation' for more information
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;;; Code:
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(require 'compile)
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(require 'haskell-cabal)
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;;;###autoload
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(defgroup haskell-compile nil
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"Settings for Haskell compilation mode"
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:link '(custom-manual "(haskell-mode)compilation")
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:group 'haskell)
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(defcustom haskell-compile-cabal-build-command
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"cd %s && cabal build --ghc-option=-ferror-spans"
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"Default build command to use for `haskell-cabal-build' when a cabal file is detected.
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The `%s' placeholder is replaced by the cabal package top folder."
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:group 'haskell-compile
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:type 'string)
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(defcustom haskell-compile-cabal-build-alt-command
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"cd %s && cabal clean -s && cabal build --ghc-option=-ferror-spans"
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"Alternative build command to use when `haskell-cabal-build' is called with a negative prefix argument.
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The `%s' placeholder is replaced by the cabal package top folder."
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:group 'haskell-compile
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:type 'string)
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(defcustom haskell-compile-command
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"ghc -Wall -ferror-spans -fforce-recomp -c %s"
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"Default build command to use for `haskell-cabal-build' when no cabal file is detected.
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The `%s' placeholder is replaced by the current buffer's filename."
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:group 'haskell-compile
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:type 'string)
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(defcustom haskell-compile-ghc-filter-linker-messages
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t
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"Filter out unremarkable \"Loading package...\" linker messages during compilation."
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:group 'haskell-compile
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:type 'boolean)
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(defconst haskell-compilation-error-regexp-alist
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`((,(concat
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"^ *\\(?1:[^\t\r\n]+?\\):"
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"\\(?:"
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"\\(?2:[0-9]+\\):\\(?4:[0-9]+\\)\\(?:-\\(?5:[0-9]+\\)\\)?" ;; "121:1" & "12:3-5"
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"\\|"
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"(\\(?2:[0-9]+\\),\\(?4:[0-9]+\\))-(\\(?3:[0-9]+\\),\\(?5:[0-9]+\\))" ;; "(289,5)-(291,36)"
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"\\)"
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":\\(?6:\n?[ \t]+[Ww]arning:\\)?")
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1 (2 . 3) (4 . 5) (6 . nil)) ;; error/warning locus
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;; multiple declarations
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("^ \\(?:Declared at:\\| \\) \\(?1:[^ \t\r\n]+\\):\\(?2:[0-9]+\\):\\(?4:[0-9]+\\)$"
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1 2 4 0) ;; info locus
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;; this is the weakest pattern as it's subject to line wrapping et al.
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(" at \\(?1:[^ \t\r\n]+\\):\\(?2:[0-9]+\\):\\(?4:[0-9]+\\)\\(?:-\\(?5:[0-9]+\\)\\)?[)]?$"
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1 2 (4 . 5) 0)) ;; info locus
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"Regexps used for matching GHC compile messages.
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See `compilation-error-regexp-alist' for semantics.")
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(defvar haskell-compilation-mode-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map compilation-mode-map))
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"Keymap for `haskell-compilation-mode' buffers.
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This is a child of `compilation-mode-map'.")
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(defun haskell-compilation-filter-hook ()
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"Local `compilation-filter-hook' for `haskell-compilation-mode'."
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(when haskell-compile-ghc-filter-linker-messages
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(delete-matching-lines "^ *Loading package [^ \t\r\n]+ [.]+ linking [.]+ done\\.$"
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(save-excursion (goto-char compilation-filter-start)
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(line-beginning-position))
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(point))))
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(define-compilation-mode haskell-compilation-mode "HsCompilation"
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"Haskell/GHC specific `compilation-mode' derivative.
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This mode provides support for GHC 7.[46]'s compile
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messages. Specifically, also the `-ferror-spans` source location
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format is supported, as well as info-locations within compile
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messages pointing to additional source locations."
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(setq-local compilation-error-regexp-alist
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haskell-compilation-error-regexp-alist)
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(add-hook 'compilation-filter-hook
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'haskell-compilation-filter-hook nil t)
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)
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;;;###autoload
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(defun haskell-compile (&optional edit-command)
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"Compile the Haskell program including the current buffer.
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Tries to locate the next cabal description in current or parent
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folders via `haskell-cabal-find-dir' and if found, invoke
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`haskell-compile-cabal-build-command' from the cabal package root
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folder. If no cabal package could be detected,
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`haskell-compile-command' is used instead.
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If prefix argument EDIT-COMMAND is non-nil (and not a negative
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prefix `-'), `haskell-compile' prompts for custom compile
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command.
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If EDIT-COMMAND contains the negative prefix argument `-',
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`haskell-compile' calls the alternative command defined in
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`haskell-compile-cabal-build-alt-command' if a cabal package was
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detected.
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`haskell-compile' uses `haskell-compilation-mode' which is
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derived from `compilation-mode'. See Info
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node `(haskell-mode)compilation' for more details."
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(interactive "P")
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(save-some-buffers (not compilation-ask-about-save)
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compilation-save-buffers-predicate)
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(let* ((cabdir (haskell-cabal-find-dir))
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(command1 (if (eq edit-command '-)
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haskell-compile-cabal-build-alt-command
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haskell-compile-cabal-build-command))
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(srcname (buffer-file-name))
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(command (if cabdir
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(format command1 cabdir)
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(if (and srcname (derived-mode-p 'haskell-mode))
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(format haskell-compile-command srcname)
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command1))))
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(when (and edit-command (not (eq edit-command '-)))
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(setq command (compilation-read-command command)))
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(compilation-start command 'haskell-compilation-mode)))
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(provide 'haskell-compile)
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;;; haskell-compile.el ends here
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