01/02: emacs: devel: Add indentation rules.

[Alex Kost]

alezost pushed a commit to branch master
in repository guix.

commit 17fa842b79503dfa9972f3bfa3d5a96610263378
Author: Alex Kost <address@hidden>
Date:   Mon Oct 12 12:06:32 2015 +0300

    emacs: devel: Add indentation rules.
    
    Suggested by Ludovic Courtès <address@hidden>.
    
    * emacs/guix-devel.el: Add indentation rules for Guix macros/procedures.
      (guix-devel-scheme-indent): New macro.
      (guix-devel-indent-package): New function.
---
 emacs/guix-devel.el |   64 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 64 insertions(+), 0 deletions(-)

diff --git a/emacs/guix-devel.el b/emacs/guix-devel.el
index b833028..c8bfbb0 100644
--- a/emacs/guix-devel.el
+++ b/emacs/guix-devel.el
@@ -24,6 +24,7 @@
 
 ;;; Code:
 
+(require 'lisp-mode)
 (require 'guix-guile)
 (require 'guix-geiser)
 (require 'guix-utils)
@@ -189,6 +190,69 @@ to find 'modify-phases' keywords."
   "A list of `font-lock-keywords' for `guix-devel-mode'.")
 
 
+;;; Indentation
+
+(defmacro guix-devel-scheme-indent (&rest rules)
+  "Set `scheme-indent-function' according to RULES.
+Each rule should have a form (SYMBOL VALUE).  See `put' for details."
+  (declare (indent 0))
+  `(progn
+     ,@(mapcar (lambda (rule)
+                 `(put ',(car rule) 'scheme-indent-function ,(cadr rule)))
+               rules)))
+
+(defun guix-devel-indent-package (state indent-point normal-indent)
+  "Indentation rule for 'package' form."
+  (let* ((package-eol (line-end-position))
+         (count (if (and (ignore-errors (down-list) t)
+                         (< (point) package-eol)
+                         (looking-at "inherit\\>"))
+                    1
+                  0)))
+    (lisp-indent-specform count state indent-point normal-indent)))
+
+(guix-devel-scheme-indent
+  (bag 0)
+  (build-system 0)
+  (call-with-compressed-output-port 2)
+  (call-with-container 1)
+  (call-with-decompressed-port 2)
+  (call-with-error-handling 0)
+  (container-excursion 1)
+  (emacs-batch-edit-file 1)
+  (emacs-batch-eval 0)
+  (emacs-substitute-sexps 1)
+  (emacs-substitute-variables 1)
+  (file-system 0)
+  (graft 0)
+  (manifest-entry 0)
+  (manifest-pattern 0)
+  (mbegin 1)
+  (mlet 2)
+  (mlet* 2)
+  (modify-phases 1)
+  (munless 1)
+  (mwhen 1)
+  (operating-system 0)
+  (origin 0)
+  (package 'guix-devel-indent-package)
+  (run-with-state 1)
+  (run-with-store 1)
+  (signature-case 1)
+  (substitute* 1)
+  (substitute-keyword-arguments 1)
+  (test-assertm 1)
+  (with-atomic-file-output 1)
+  (with-derivation-narinfo 1)
+  (with-derivation-substitute 2)
+  (with-directory-excursion 1)
+  (with-error-handling 0)
+  (with-monad 1)
+  (with-mutex 1)
+  (with-store 1)
+  (wrap-program 1))
+
+
 (defvar guix-devel-keys-map
   (let ((map (make-sparse-keymap)))
     (define-key map (kbd "b") 'guix-devel-build-package-definition)