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Common Lisp DEF Macro Indentation
From: |
Volkan YAZICI |
Subject: |
Common Lisp DEF Macro Indentation |
Date: |
Mon, 14 Jul 2008 06:03:24 -0700 (PDT) |
User-agent: |
G2/1.0 |
Hi,
I'm trying to write indentation routines for DEF macro of Common Lisp
-- specifically designed for demacs[1]. Below is the code I use at the
moment.
(defmacro concatenate-symbols-for-regexp (&rest symbols)
(with-output-to-string
(let (not-first)
(while symbols
(if not-first
(princ "\\|")
(setq not-first t))
(princ (pop symbols))))))
(setq lisp-indent-def-function-regexp
(concatenate-symbols-for-regexp
function macro compiler-macro method generic
type print-object class condition))
(defcustom lisp-indent-def-function-regexp
(concatenate-symbols-for-regexp
function macro compiler-macro method generic type
print-object class condition)
"Definer types will be indented like a function definition form."
:type 'string
:group 'lisp-indent)
(defcustom lisp-indent-def-variable-regexp
(concatenate-symbols-for-regexp
variable constant load-time-constant special-variable
symbol-macro struct)
"Definer types will be indented like a variable definition form."
:type 'string
:group 'lisp-indent)
(defcustom lisp-indent-def-setf-regexp
(concatenate-symbols-for-regexp setf)
"Definer types will be indented like a setf definition form."
:type 'string
:group 'lisp-indent)
(defmacro with-position-at-def-type (position &rest body)
`(save-excursion
(goto-char ,position)
(forward-char 1)
(forward-sexp 2)
(backward-sexp)
(when (looking-at "(")
(forward-char 1))
,@body))
(defun lisp-indent-def (path state indent-point sexp-column normal-
indent)
(lisp-indent-259
(with-position-at-def-type (elt state 1)
(cond ((looking-at lisp-indent-def-function-regexp)
'(4 4 &lambda &body))
((looking-at lisp-indent-def-variable-regexp)
'(4 4 &body))
((looking-at lisp-indent-def-setf-regexp)
'(4 4 &lambda &body))
(t
(error "No available indentation for definer of type `%s'."
(current-word)))))
path state indent-point sexp-column normal-indent))
(put 'def 'common-lisp-indent-function 'lisp-indent-def)
The problem is if I'd start the &body part of the related s-
expressions with a list, emacs complains that ``forward-sexp: Scan
error: "Unbalanced parentheses", 201, 361''. For instance, consider
below case:
;; Indents without a problem.
(def function foo (bar)
"baz"
moo)
;; Using `(moo)' instead of `moo' messes up the indentation routine.
(def function foo (bar)
"baz"
(moo
...
What might be causing the problem? Are there any mistakes with forms I
supplied to LISP-INDENT-259? Any kind of help will be appreciated.
Regards.
[1] http://cliki.net/demacs
- Common Lisp DEF Macro Indentation,
Volkan YAZICI <=