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Make the #'add-to-list implementation a little conciser and clearer for XEmacs 2008-05-14 Aidan Kehoe <kehoea@parhasard.net> * subr.el (add-to-list): Implement the same logic with a more concise syntax; thank you Stephen, in http://mid.gmane.org/87ablomdwx.fsf@uwakimon.sk.tsukuba.ac.jp .
author Aidan Kehoe <kehoea@parhasard.net>
date Wed, 14 May 2008 23:55:13 +0200
parents f981d2fdd880
children db7068430402
line wrap: on
line source

;;
;; To regenerate ../src/emacs-marshals.c just load this file.
;;
(defconst name-to-return-type
  '(("INT" . "gint")
    ("CALLBACK" . "GtkCallback")
    ("OBJECT" . "GtkObject *")
    ("POINTER" . "void *")
    ("STRING" . "gchar *")
    ("BOOL" . "gboolean")
    ("DOUBLE" . "gdouble")
    ("FLOAT" . "gfloat")
    ("LIST"  . "void *")
    ("NONE" . nil)))

(defvar defined-marshallers nil)

(defun get-marshaller-name (rval args)
  (concat "emacs_gtk_marshal_" rval "__"
	  (mapconcat 'identity (or args '("NONE")) "_")))

(defun define-marshaller (rval &rest args)
  (let ((name nil)
	(internal-rval (assoc rval  name-to-return-type))
	(ctr 0)
	(func-proto (format "__%s_fn" rval)))
    (if (not internal-rval)
	(error "Do not know return type of `%s'" rval))
    (setq name (get-marshaller-name rval args))

    (if (member name defined-marshallers)
	(error "Attempt to define the same marshaller more than once! %s" name))

    (set-buffer (get-buffer-create "emacs-marshals.c"))
    (goto-char (point-max))

    (if (or (member "FLOAT" args) (member "DOUBLE" args))
	;; We need to special case anything with FLOAT in the argument
	;; list or the parameters get screwed up royally.
	(progn
	  (setq func-proto (concat (format "__%s__" rval)
				   (mapconcat 'identity args "_")
				   "_fn"))
	  (insert "typedef "
		  (or (cdr internal-rval) "void")
		  " (*"
		  func-proto ")("
		  (mapconcat (lambda (x)
			       (cdr (assoc x name-to-return-type))) args ", ")
		  ");\n")))

    (insert "\n"
	    "static void\n"
	    name " (ffi_actual_function func, GtkArg *args)\n"
	    "{\n"
	    (format "  %s rfunc = (%s) func;\n" func-proto func-proto))

    (if (string= "LIST" rval) (setq rval "POINTER"))

    (if (cdr internal-rval)
	;; It has a return type to worry about
	(insert "  " (cdr internal-rval) " *return_val;\n\n"
		(format "  return_val = GTK_RETLOC_%s (args[%d]);\n" rval (length args))
		"  *return_val = ")
      (insert "  "))
    (insert "(*rfunc) (")
    (while args
      (if (/= ctr 0)
	  (insert ", "))
      (insert (format "GTK_VALUE_%s (args[%d])" (car args) ctr))
      (setq args (cdr args)
	    ctr (1+ ctr)))
    (insert ");\n")
    (insert "}\n")))

(save-excursion
  (find-file "../src/emacs-marshals.c")
  (erase-buffer)
  (setq defined-marshallers nil)

  (insert "/* This file was automatically generated by ../lisp/gtk-marshal.el */\n"
	  "/* DO NOT EDIT BY HAND!!! */\n")
  (insert "#define GTK_VALUE_ARRAY(x) GTK_VALUE_POINTER(x)\n\n")
  (insert "#define GTK_VALUE_LIST(x) GTK_VALUE_POINTER(x)\n\n")

  (let ((todo '(
		("BOOL" "OBJECT" "INT")
		("BOOL" "OBJECT" "OBJECT" "OBJECT")
		("BOOL" "OBJECT" "OBJECT")
		("BOOL" "OBJECT" "POINTER")
		("BOOL" "OBJECT" "STRING")
		("BOOL" "OBJECT")
		("BOOL" "POINTER" "BOOL")
		("BOOL" "POINTER")
		("BOOL")
		("FLOAT" "OBJECT" "FLOAT")
		("FLOAT" "OBJECT")
		("INT" "BOOL")
		("INT" "OBJECT" "ARRAY")
		("INT" "OBJECT" "INT" "ARRAY")
		("INT" "OBJECT" "INT" "INT")
		("INT" "OBJECT" "INT" "STRING")
		("INT" "OBJECT" "INT")
		("INT" "OBJECT" "OBJECT")
		("INT" "OBJECT" "POINTER" "INT" "INT")
		("INT" "OBJECT" "POINTER" "INT")
		("INT" "OBJECT" "POINTER")
		("INT" "OBJECT" "STRING")
		("INT" "OBJECT")
		("INT" "POINTER" "INT")
		("INT" "POINTER" "STRING" "INT")
		("INT" "POINTER" "STRING" "STRING")
		("INT" "POINTER" "STRING")
		("INT" "POINTER")
		("INT" "STRING" "STRING" "INT" "ARRAY")
		("INT" "STRING")
		("INT")
		("LIST" "OBJECT")
		("LIST")
		("NONE" "BOOL")
		("NONE" "INT" "INT" "INT" "INT")
		("NONE" "INT" "INT")
		("NONE" "INT")
		("NONE" "OBJECT" "BOOL" "INT")
		("NONE" "OBJECT" "BOOL")
		("NONE" "OBJECT" "FLOAT" "FLOAT" "FLOAT" "BOOL")
		("NONE" "OBJECT" "FLOAT" "FLOAT" "FLOAT" "FLOAT")
		("NONE" "OBJECT" "FLOAT" "FLOAT" "FLOAT")
		("NONE" "OBJECT" "FLOAT" "FLOAT")
		("NONE" "OBJECT" "FLOAT")
		("NONE" "OBJECT" "INT" "BOOL")
		("NONE" "OBJECT" "INT" "FLOAT" "BOOL")
		("NONE" "OBJECT" "INT" "FLOAT")
		("NONE" "OBJECT" "INT" "INT" "ARRAY" "ARRAY" "ARRAY" "ARRAY" "ARRAY" "ARRAY")
		("NONE" "OBJECT" "INT" "INT" "ARRAY")
		("NONE" "OBJECT" "INT" "INT" "FLOAT" "FLOAT")
		("NONE" "OBJECT" "INT" "INT" "INT" "INT")
		("NONE" "OBJECT" "INT" "INT" "INT")
		("NONE" "OBJECT" "INT" "INT" "POINTER" "POINTER")
		("NONE" "OBJECT" "INT" "INT" "POINTER")
		("NONE" "OBJECT" "INT" "INT" "STRING" "INT" "POINTER" "POINTER")
		("NONE" "OBJECT" "INT" "INT" "STRING")
		("NONE" "OBJECT" "INT" "INT")
		("NONE" "OBJECT" "INT" "OBJECT")
		("NONE" "OBJECT" "INT" "POINTER")
		("NONE" "OBJECT" "INT" "STRING")
		("NONE" "OBJECT" "INT")
		("NONE" "OBJECT" "LIST" "INT")
		("NONE" "OBJECT" "LIST")
		("NONE" "OBJECT" "OBJECT" "BOOL" "BOOL" "INT" "INT")
		("NONE" "OBJECT" "OBJECT" "BOOL" "BOOL" "INT")
		("NONE" "OBJECT" "OBJECT" "BOOL" "BOOL")
		("NONE" "OBJECT" "OBJECT" "FLOAT" "INT")
		("NONE" "OBJECT" "OBJECT" "INT" "INT" "INT" "INT" "INT" "INT" "INT" "INT")
		("NONE" "OBJECT" "OBJECT" "INT" "INT" "INT" "INT")
		("NONE" "OBJECT" "OBJECT" "INT" "INT" "INT")
		("NONE" "OBJECT" "OBJECT" "INT" "INT")
		("NONE" "OBJECT" "OBJECT" "INT")
		("NONE" "OBJECT" "OBJECT" "OBJECT" "INT")
		("NONE" "OBJECT" "OBJECT" "OBJECT" "OBJECT" "INT")
		("NONE" "OBJECT" "OBJECT" "OBJECT" "OBJECT")
		("NONE" "OBJECT" "OBJECT" "OBJECT" "POINTER" "POINTER" "INT" "INT")
		("NONE" "OBJECT" "OBJECT" "OBJECT")
		("NONE" "OBJECT" "OBJECT" "POINTER")
		("NONE" "OBJECT" "OBJECT" "STRING" "INT" "INT" "INT" "INT" "INT")
		("NONE" "OBJECT" "OBJECT" "STRING" "STRING" "INT")
		("NONE" "OBJECT" "OBJECT" "STRING" "STRING")
		("NONE" "OBJECT" "OBJECT" "STRING")
		("NONE" "OBJECT" "OBJECT")
		("NONE" "OBJECT" "POINTER" "BOOL")
		("NONE" "OBJECT" "POINTER" "INT" "FLOAT" "FLOAT")
		("NONE" "OBJECT" "POINTER" "INT" "INT" "INT")
		("NONE" "OBJECT" "POINTER" "INT" "INT")
		("NONE" "OBJECT" "POINTER" "INT" "POINTER" "POINTER")
		("NONE" "OBJECT" "POINTER" "INT" "POINTER")
		("NONE" "OBJECT" "POINTER" "INT" "STRING" "INT" "POINTER" "POINTER")
		("NONE" "OBJECT" "POINTER" "INT" "STRING")
		("NONE" "OBJECT" "POINTER" "INT")
		("NONE" "OBJECT" "POINTER" "POINTER" "INT" "INT" "INT" "INT" "INT" "INT")
		("NONE" "OBJECT" "POINTER" "POINTER" "POINTER" "STRING" "INT")
		("NONE" "OBJECT" "POINTER" "POINTER" "POINTER")
		("NONE" "OBJECT" "POINTER" "POINTER")
		("NONE" "OBJECT" "POINTER" "STRING" "INT" "POINTER" "POINTER" "POINTER" "POINTER" "BOOL" "BOOL")
		("NONE" "OBJECT" "POINTER")
		("NONE" "OBJECT" "STRING" "BOOL")
		("NONE" "OBJECT" "STRING" "INT" "INT" "INT")
		("NONE" "OBJECT" "STRING" "POINTER" "INT" "INT" "INT")
		("NONE" "OBJECT" "STRING" "POINTER" "INT" "INT")
		("NONE" "OBJECT" "STRING" "STRING")
		("NONE" "OBJECT" "STRING")
		("NONE" "OBJECT")
		("NONE" "POINTER" "INT" "INT")
		("NONE" "POINTER" "INT")
		("NONE" "POINTER" "POINTER" "BOOL" "INT" "INT" "INT" "INT" "INT" "INT")
		("NONE" "POINTER" "POINTER" "BOOL" "INT" "INT" "INT" "INT")
		("NONE" "POINTER" "POINTER" "INT" "INT" "INT" "INT")
		("NONE" "POINTER" "POINTER" "INT" "INT")
		("NONE" "POINTER" "POINTER" "POINTER" "INT" "INT" "STRING" "INT")
		("NONE" "POINTER" "POINTER" "POINTER" "INT" "INT" "STRING")
		("NONE" "POINTER" "POINTER" "POINTER" "POINTER")
		("NONE" "POINTER" "POINTER")
		("NONE" "POINTER" "STRING" "STRING")
		("NONE" "POINTER" "STRING")
		("NONE" "POINTER")
		("NONE")
		("OBJECT" "BOOL" "BOOL" "INT")
		("OBJECT" "BOOL" "INT")
		("OBJECT" "FLOAT" "FLOAT" "FLOAT" "FLOAT" "FLOAT" "FLOAT")
		("OBJECT" "FLOAT" "FLOAT" "FLOAT" "FLOAT" "FLOAT")
		("OBJECT" "FLOAT" "FLOAT" "FLOAT" "FLOAT")
		("OBJECT" "INT" "ARRAY")
		("OBJECT" "INT" "BOOL" "BOOL")
		("OBJECT" "INT" "INT" "ARRAY")
		("OBJECT" "INT" "INT" "BOOL")
		("OBJECT" "INT" "INT" "STRING")
		("OBJECT" "INT" "INT")
		("OBJECT" "INT")
		("OBJECT" "OBJECT" "FLOAT" "INT")
		("OBJECT" "OBJECT" "INT")
		("OBJECT" "OBJECT" "OBJECT")
		("OBJECT" "OBJECT" "STRING" "INT" "INT" "INT" "INT" "INT")
		("OBJECT" "OBJECT" "STRING" "INT" "INT" "INT" "INT")
		("OBJECT" "OBJECT" "STRING" "INT" "INT")
		("OBJECT" "OBJECT" "STRING")
		("OBJECT" "OBJECT")
		("OBJECT" "POINTER" "POINTER")
		("OBJECT" "POINTER" "STRING")
		("OBJECT" "POINTER")
		("OBJECT" "STRING" "FLOAT" "FLOAT" "FLOAT" "BOOL")
		("OBJECT" "STRING" "INT" "STRING" "STRING")
		("OBJECT" "STRING" "OBJECT")
		("OBJECT" "STRING" "STRING" "STRING" "ARRAY" "STRING" "STRING")
		("OBJECT" "STRING" "STRING")
		("OBJECT" "STRING")
		("OBJECT")
		("POINTER" "INT" "INT")
		("POINTER" "INT")
		("POINTER" "OBJECT" "INT" "INT")
		("POINTER" "OBJECT" "INT")
		("POINTER" "OBJECT" "POINTER" "INT")
		("POINTER" "OBJECT" "POINTER" "POINTER" "ARRAY" "INT" "POINTER" "POINTER" "POINTER" "POINTER" "BOOL" "BOOL")
		("POINTER" "OBJECT" "POINTER")
		("POINTER" "OBJECT")
		("POINTER" "POINTER")
		("POINTER" "STRING" "INT")
		("POINTER")
		("STRING" "INT" "INT" "INT")
		("STRING" "INT")
		("STRING" "OBJECT" "BOOL")
		("STRING" "OBJECT" "FLOAT")
		("STRING" "OBJECT" "INT" "INT")
		("STRING" "OBJECT" "INT")
		("STRING" "OBJECT")
		("STRING" "POINTER" "STRING")
		("STRING" "POINTER")
		("STRING")
		)
	      )
	)
    (mapc (lambda (x) (apply 'define-marshaller x)) todo)

    (insert "\n
#include \"hash.h\"

static struct hash_table *marshaller_hashtable;

static void initialize_marshaller_storage (void)
{
	if (!marshaller_hashtable)
	{
		marshaller_hashtable = make_string_hash_table (100);
")
    
    (mapc (lambda (x)
	    (let ((name (get-marshaller-name (car x) (cdr x))))
	      (insert (format "\t\tputhash (\"%s\", (void *) %s, marshaller_hashtable);\n" name name))))
	  todo)
    (insert "\t};\n"
	    "}\n"
	    "
static void *find_marshaller (const char *func_name)
{
	void *fn = NULL;
	initialize_marshaller_storage ();

	if (gethash (func_name, marshaller_hashtable, (const void **)&fn))
	{
		return (fn);
	}

	return (NULL);
}
"))

  (save-buffer)
  (kill-buffer "emacs-marshals.c"))