Annotation of OpenXM_contrib/pari/emacs/with-syntax.el, Revision 1.1.1.1
1.1 maekawa 1: ;; This file is to be used with pari.el and with pari-translator.el
2: ;; where further explanations may be found. See also the file pariemacs.txt.
3:
4: ;; Created November 22 1998 by Olivier Ramare (ramare@gat.univ-lille1.fr)
5:
6: ;; Description:
7: ;; A lisp file used in gp-script-mode to use the syntax 'with'.
8: ;; See the function 'translate-with for more details.
9: ;; To use it in an edited gp-program, introduce the following
10: ;; lines in this program:
11: ;; /*@
12: ;; (load-file "with-syntax.el")
13: ;; (setq gp-input-filter-hook (list 'translate))
14: ;; */
15:
16: ;; You should load some general functions for translating,
17: ;; and the name below may be different on your system:
18: (require 'pari-translator
19: (concat gp-gphelp-dir "pari-translator.el"))
20:
21: ;; Here is the master function:
22: (defun translate nil
23: (gp-translate-on-other-file)
24:
25: ;; Now starts the translation:
26: (translate-with)
27: )
28:
29:
30: ;;---------------------
31: ;; Translation of with
32: ;;---------------------
33:
34: (defvar translate-with-number 0
35: "The next variable of a `with' function will be replaced by the
36: identifier whose name is the concatenation of \"with\" with this
37: number.")
38:
39: (defun translate-with nil
40: "Understand the syntax \"with(foo,to_do)\" in a gp-program, where foo
41: is an expression evaluating to a vector, as follows: any subsequent
42: dot `.' not preceded by a character of the set []a-zA-Z0-9_] is
43: replaced by this evaluation. An auxiliary variable with# is used where
44: # is an integer given by the variable 'translate-with-number.
45: Imbricated with are allowed and the innermost one has priority. "
46:
47: (goto-char (point-max))
48: (while (re-search-backward "\\([^a-zA-Z_0-9]\\|\\`\\)with(" nil t)
49: (goto-char (match-end 0))
50: (let ((father (buffer-substring (point)
51: (gp-looking-at-rat-exp)))
52: (replacement
53: (concat "with" (number-to-string translate-with-number)))
54: (p-end (save-excursion
55: (forward-char -1) (forward-sexp)
56: (- (point) 1))))
57: (setq translate-with-number (+ 1 translate-with-number))
58: ;; Erase the command:
59: (forward-char -5)
60: (delete-char (+ 6 (length father)))
61: ;; Insert new variable:
62: (insert (concat replacement "=" father ";\n"))
63: (setq p-end (- p-end
64: (- (length replacement) 3)))
65: ;; Erase last ):
66: (save-excursion (goto-char p-end) (delete-char 1))
67: ;; Replace proper `.' by new variable:
68: (while (re-search-forward "[^]a-zA-Z0-9_]\\." (- p-end 1) t)
69: (forward-char -1) (delete-char 1)
70: (insert replacement)
71: (setq p-end (+ p-end (- (length replacement) 1)))
72: (forward-char 1))))
73: ;; Set the counter back to 0 to avoid creating to many
74: ;; variables:
75: (setq translate-with-number 0))
76:
77:
78: ;; with-syntax.el ends here
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