flycheck-hdevtools.el

;;; flycheck-hdevtools.el --- A flycheck checker for Haskell using hdevtools

;; Copyright (C) 2013-2014  Steve Purcell

;; Author: Steve Purcell <steve@sanityinc.com>
;; URL: https://github.com/flycheck/flycheck-hdevtools
;; Keywords: convenience languages tools
;; Package-Requires: ((flycheck "0.21-cvs1") (dash "2.0"))
;; Version: DEV

;; This file is not part of GNU Emacs.

;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; Adds a Flycheck syntax checker for Haskell based on hdevtools.

;;;; Setup

;; (eval-after-load 'flycheck '(require 'flycheck-hdevtools))

;;; Code:

(require 'dash)
(require 'flycheck)

(flycheck-define-checker haskell-hdevtools
  "A Haskell syntax and type checker using hdevtools.

See URL `https://github.com/hdevtools/hdevtools'."
  :command
  ("hdevtools" "check" "-g" "-Wall"
   (eval (when flycheck-ghc-no-user-package-database
           (list "-g" "-no-user-package-db")))
   (eval (apply #'append (mapcar (lambda (db) (concat "-g-package-db" db))
                                 flycheck-ghc-package-databases)))
   (eval (concat
          "-g-i"
          (flycheck-module-root-directory
           (flycheck-find-in-buffer flycheck-haskell-module-re))))
   (eval (apply #'append (mapcar (lambda (db) (list (concat "-g-i" db)))
                                 flycheck-ghc-search-path)))
   source-inplace)
  :error-patterns
  ((warning line-start (file-name) ":" line ":" column ":"
            (or " " "\n ") "warning:" (optional "\n")
            (message
             (one-or-more " ") (one-or-more not-newline)
             (zero-or-more "\n"
                           (one-or-more " ")
                           (one-or-more not-newline)))
            line-end)
    (error line-start (file-name) ":" line ":" column ":"
             (or " " "\n ") "error:" (optional "\n")
             (message
              (one-or-more " ") (one-or-more not-newline)
              (zero-or-more "\n"
                            (one-or-more " ")
                            (one-or-more not-newline)))
             line-end)
    )
  :error-filter
  (lambda (errors)
    (-> errors
      flycheck-dedent-error-messages
      flycheck-sanitize-errors))
  :modes haskell-mode
  :next-checkers ((warning . haskell-hlint)))


(add-to-list 'flycheck-checkers 'haskell-hdevtools)


(provide 'flycheck-hdevtools)
;;; flycheck-hdevtools.el ends here