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|
;; erlang-flymake.el
;;
;; Syntax check erlang source code on the fly (integrates with flymake).
;;
;; Start using flymake with erlang by putting the following somewhere
;; in your .emacs file:
;;
;; (require 'erlang-flymake)
;;
;; Flymake is rather eager and does its syntax checks frequently by
;; default and if you are bothered by this, you might want to put the
;; following in your .emacs as well:
;;
;; (erlang-flymake-only-on-save)
;;
;; There are a couple of variables which control the compilation options:
;; * erlang-flymake-get-code-path-dirs-function
;; * erlang-flymake-get-include-dirs-function
;; * erlang-flymake-extra-opts
;;
;; This code is inspired by http://www.emacswiki.org/emacs/FlymakeErlang.
(require 'flymake)
(eval-when-compile
(require 'cl))
(defvar erlang-flymake-command
"erlc"
"The command that will be used to perform the syntax check")
(defvar erlang-flymake-get-code-path-dirs-function
'erlang-flymake-get-code-path-dirs
"Return a list of ebin directories to add to the code path.")
(defvar erlang-flymake-get-include-dirs-function
'erlang-flymake-get-include-dirs
"Return a list of include directories to add to the compiler options.")
(defvar erlang-flymake-extra-opts
(list "+warn_unused_import"
"+warn_shadow_vars"
"+warn_export_vars"
"+strong_validation"
"+report")
"A list of options that will be passed to the compiler")
(defun erlang-flymake-only-on-save ()
"Trigger flymake only when the buffer is saved (disables syntax
check on newline and when there are no changes)."
(interactive)
;; There doesn't seem to be a way of disabling this; set to the
;; largest int available as a workaround (most-positive-fixnum
;; equates to 8.5 years on my machine, so it ought to be enough ;-) )
(setq flymake-no-changes-timeout most-positive-fixnum)
(setq flymake-start-syntax-check-on-newline nil))
(defun erlang-flymake-get-code-path-dirs ()
(list (concat (erlang-flymake-get-app-dir) "ebin")))
(defun erlang-flymake-get-include-dirs ()
(list (concat (erlang-flymake-get-app-dir) "include")
(concat (erlang-flymake-get-app-dir) "deps")))
(defun erlang-flymake-get-app-dir ()
(let ((src-path (file-name-directory (buffer-file-name))))
(file-name-directory (directory-file-name src-path))))
(defun erlang-flymake-init ()
(let* ((temp-file
(flet ((flymake-get-temp-dir () (erlang-flymake-temp-dir)))
(flymake-init-create-temp-buffer-copy
'flymake-create-temp-with-folder-structure)))
(code-dir-opts
(erlang-flymake-flatten
(mapcar (lambda (dir) (list "-pa" dir))
(funcall erlang-flymake-get-code-path-dirs-function))))
(inc-dir-opts
(erlang-flymake-flatten
(mapcar (lambda (dir) (list "-I" dir))
(funcall erlang-flymake-get-include-dirs-function))))
(compile-opts
(append inc-dir-opts
code-dir-opts
erlang-flymake-extra-opts)))
(list erlang-flymake-command (append compile-opts (list temp-file)))))
(defun erlang-flymake-temp-dir ()
;; Squeeze the user's name in there in order to make sure that files
;; for two users who are working on the same computer (like a linux
;; box) don't collide
(format "%s/flymake-%s" temporary-file-directory user-login-name))
(defun erlang-flymake-flatten (list)
(apply #'append list))
(add-to-list 'flymake-allowed-file-name-masks
'("\\.erl\\'" erlang-flymake-init))
(add-hook 'erlang-mode-hook 'flymake-mode)
(provide 'erlang-flymake)
;; erlang-flymake ends here
|
