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225 rader
9.0 KiB
225 rader
9.0 KiB
;;; 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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(require 'ansi-color)
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(eval-when-compile (require 'subr-x))
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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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"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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For legacy compat, `%s' 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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"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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For legacy compat, `%s' 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-stack-build-command
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"stack build --fast"
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"Default build command to use for `haskell-stack-build' when a stack file is detected.
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For legacy compat, `%s' is replaced by the stack package top folder."
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:group 'haskell-compile
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:type 'string)
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(defcustom haskell-compile-stack-build-alt-command
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"stack clean && stack build --fast"
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"Alternative build command to use when `haskell-stack-build' is called with a negative prefix argument.
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For legacy compat, `%s' is replaced by the stack 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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(defcustom haskell-compile-ignore-cabal nil
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"Ignore cabal build definitions files for this buffer when detecting the build tool."
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:group 'haskell-compile
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:type 'boolean)
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(make-variable-buffer-local 'haskell-compile-ignore-cabal)
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(put 'haskell-compile-ignore-cabal 'safe-local-variable #'booleanp)
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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]+\\)$"
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1 2 4 0) ;; info locus
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;; failed tasty tests
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(".*error, called at \\(.*\\.hs\\):\\([0-9]+\\):\\([0-9]+\\) in .*" 1 2 3 2 1)
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(" +\\(.*\\.hs\\):\\([0-9]+\\):$" 1 2 nil 2 1)
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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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(let ((inhibit-read-only t))
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(ansi-color-apply-on-region compilation-filter-start (point-max))))
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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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"Run a compile command for the current Haskell buffer.
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Locates stack or cabal definitions and, if found, invokes the
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default build command for that build tool. Cabal is preferred
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but may be ignored with `haskell-compile-ignore-cabal'.
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If prefix argument EDIT-COMMAND is non-nil (and not a negative
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prefix `-'), prompt for a custom compile command.
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If EDIT-COMMAND contains the negative prefix argument `-', call
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the alternative command defined in
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`haskell-compile-stack-build-alt-command' /
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`haskell-compile-cabal-build-alt-command'.
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If there is no prefix argument, the most recent custom compile
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command is used, falling back to
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`haskell-compile-stack-build-command' for stack builds
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`haskell-compile-cabal-build-command' for cabal builds, and
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`haskell-compile-command' otherwise.
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'% characters in the `-command' templates are replaced by the
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base directory for build tools, or the current buffer for
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`haskell-compile-command'."
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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 ((cabaldir (and
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(not haskell-compile-ignore-cabal)
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(or (haskell-cabal-find-dir)
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(locate-dominating-file default-directory "cabal.project")
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(locate-dominating-file default-directory "cabal.project.local")))))
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(if cabaldir
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(haskell--compile cabaldir edit-command
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'haskell--compile-cabal-last
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haskell-compile-cabal-build-command
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haskell-compile-cabal-build-alt-command)
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(let ((stackdir (and haskell-compile-ignore-cabal
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(locate-dominating-file default-directory "stack.yaml"))))
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(if stackdir
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(haskell--compile stackdir edit-command
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'haskell--compile-stack-last
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haskell-compile-stack-build-command
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haskell-compile-stack-build-alt-command)
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(let ((srcfile (buffer-file-name)))
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(haskell--compile srcfile edit-command
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'haskell--compile-ghc-last
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haskell-compile-command
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haskell-compile-command)))))))
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(defvar haskell--compile-stack-last nil)
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(defvar haskell--compile-cabal-last nil)
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(defvar haskell--compile-ghc-last nil)
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(defun haskell--directory-name-p (name)
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"Version of `directory-name-p', which is unavailable in Emacs 24.4."
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(string= (file-name-as-directory name) name))
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(defun haskell--compile (dir-or-file edit last-sym fallback alt)
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(let* ((default (or (symbol-value last-sym) fallback))
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(template (cond
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((null edit) default)
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((< edit 0) alt)
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(t (compilation-read-command default))))
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(command (format template dir-or-file))
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(dir (if (haskell--directory-name-p dir-or-file)
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dir-or-file
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default-directory))
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(name (if (haskell--directory-name-p dir-or-file)
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(file-name-base (directory-file-name dir-or-file))
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(file-name-nondirectory dir-or-file))))
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(unless (eq edit'-)
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(set last-sym template))
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(let ((default-directory dir))
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(compilation-start
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command
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'haskell-compilation-mode
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(lambda (mode) (format "*%s* <%s>" mode name))))))
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(provide 'haskell-compile)
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;;; haskell-compile.el ends here
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