;;; ebnf2ps.el --- translate an EBNF to a syntactic chart on PostScript
-;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+;; Free Software Foundation, Inc.
;; Author: Vinicius Jose Latorre <viniciusjl@ig.com.br>
;; Maintainer: Vinicius Jose Latorre <viniciusjl@ig.com.br>
;; Keywords: wp, ebnf, PostScript
-;; Version: 4.3
+;; Version: 4.4
;; X-URL: http://www.emacswiki.org/cgi-bin/wiki/ViniciusJoseLatorre
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
-(defconst ebnf-version "4.3"
- "ebnf2ps.el, v 4.3 <2006/09/26 vinicius>
+(defconst ebnf-version "4.4"
+ "ebnf2ps.el, v 4.4 <2007/02/12 vinicius>
Vinicius's last change version. When reporting bugs, please also
report the version of Emacs, if any, that ebnf2ps was running with.
;; `ebnf-eps-region' execution.
;; It's an error to try to close a not opened EPS file.
;;
+;; ;Hheader generate a header in current EPS file. The header string can
+;; have the following formats:
+;;
+;; %% prints a % character.
+;;
+;; %H prints the `ebnf-eps-header' (which see) value.
+;;
+;; %F prints the `ebnf-eps-footer' (which see) value.
+;;
+;; Any other format is ignored, that is, if, for example, it's
+;; used %s then %s characters are stripped out from the header.
+;; If header is an empty string, no header is generated until a
+;; non-empty header is specified or `ebnf-eps-header' has a
+;; non-empty string value.
+;;
+;; ;Ffooter generate a footer in current EPS file. Similar to ;H action
+;; comment.
+;;
;; So if you have:
;;
;; (setq ebnf-horizontal-orientation nil)
;; The production A is generated in both files ebnf--AA.eps and ebnf--BB.eps.
;;
;;
+;; Log Messages
+;; ------------
+;;
+;; The buffer *Ebnf2ps Log* is where the ebnf2ps log messages are inserted.
+;; These messages are intended to help debugging ebnf2ps.
+;;
+;; The log messages are enabled by `ebnf-log' option (which see). The default
+;; value is nil, that is, no log messages are generated.
+;;
+;;
;; Utilities
;; ---------
;;
;;
;; `ebnf-eps-prefix' Specify EPS prefix file name.
;;
+;; `ebnf-eps-header-font' Specify EPS header font.
+;;
+;; `ebnf-eps-header' Specify EPS header.
+;;
+;; `ebnf-eps-footer-font' Specify EPS footer font.
+;;
+;; `ebnf-eps-footer' Specify EPS footer.
+;;
;; `ebnf-use-float-format' Non-nil means use `%f' float format.
;;
;; `ebnf-stop-on-error' Non-nil means signal error and stop.
;; `ebnf-optimize' Non-nil means optimize syntactic chart
;; of rules.
;;
+;; `ebnf-log' Non-nil means generate log messages.
+;;
;; To set the above options you may:
;;
;; a) insert the code in your ~/.emacs, like:
;; To help to handle this situation, ebnf2ps has the following commands to
;; handle styles:
;;
+;; `ebnf-find-style' Return style definition if NAME is already defined;
+;; otherwise, return nil.
+;;
;; `ebnf-insert-style' Insert a new style NAME with inheritance INHERITS and
;; values VALUES.
;;
:group 'ebnf2ps)
+(defcustom ebnf-eps-header-font '(11 Helvetica "Black" "White" bold)
+ "*Specify EPS header font.
+
+See documentation for `ebnf-production-font'.
+
+See `ebnf-eps-buffer' and `ebnf-eps-region' commands."
+ :type '(list :tag "EPS Header Font"
+ (number :tag "Font Size")
+ (symbol :tag "Font Name")
+ (choice :tag "Foreground Color"
+ (string :tag "Name")
+ (other :tag "Default" nil))
+ (choice :tag "Background Color"
+ (string :tag "Name")
+ (other :tag "Default" nil))
+ (repeat :tag "Font Attributes" :inline t
+ (choice (const bold) (const italic)
+ (const underline) (const strikeout)
+ (const overline) (const shadow)
+ (const box) (const outline))))
+ :version "22"
+ :group 'ebnf2ps)
+
+
+(defcustom ebnf-eps-header nil
+ "*Specify EPS header.
+
+The value should be a string, a symbol or nil.
+
+String is inserted unchanged.
+
+For symbol bounded to a function, the function is called and should return a
+string. For symbol bounded to a value, the value should be a string.
+
+If symbol is unbounded, it is silently ignored.
+
+Empty string or nil mean that no header will be generated.
+
+Note that when the header action comment (;H in EBNF syntax) is specified, the
+string in the header action comment is processed and, if it returns a non-empty
+string, it's used to generate the header. The header action comment accepts
+the following formats:
+
+ %% prints a % character.
+
+ %H prints the `ebnf-eps-header' value.
+
+ %F prints the `ebnf-eps-footer' (which see) value.
+
+Any other format is ignored, that is, if, for example, it's used %s then %s
+characters are stripped out from the header. If header action comment is an
+empty string, no header is generated until a non-empty header is specified or
+`ebnf-eps-header' has a non-empty string value."
+ :type '(repeat (choice :menu-tag "EPS Header"
+ :tag "EPS Header"
+ string symbol (const :tag "No Header" nil )))
+ :version "22"
+ :group 'ebnf2ps)
+
+
+(defcustom ebnf-eps-footer-font '(7 Helvetica "Black" "White" bold)
+ "*Specify EPS footer font.
+
+See documentation for `ebnf-production-font'.
+
+See `ebnf-eps-buffer' and `ebnf-eps-region' commands."
+ :type '(list :tag "EPS Footer Font"
+ (number :tag "Font Size")
+ (symbol :tag "Font Name")
+ (choice :tag "Foreground Color"
+ (string :tag "Name")
+ (other :tag "Default" nil))
+ (choice :tag "Background Color"
+ (string :tag "Name")
+ (other :tag "Default" nil))
+ (repeat :tag "Font Attributes" :inline t
+ (choice (const bold) (const italic)
+ (const underline) (const strikeout)
+ (const overline) (const shadow)
+ (const box) (const outline))))
+ :version "22"
+ :group 'ebnf2ps)
+
+
+(defcustom ebnf-eps-footer nil
+ "*Specify EPS footer.
+
+The value should be a string, a symbol or nil.
+
+String is inserted unchanged.
+
+For symbol bounded to a function, the function is called and should return a
+string. For symbol bounded to a value, the value should be a string.
+
+If symbol is unbounded, it is silently ignored.
+
+Empty string or nil mean that no footer will be generated.
+
+Note that when the footer action comment (;F in EBNF syntax) is specified, the
+string in the footer action comment is processed and, if it returns a non-empty
+string, it's used to generate the footer. The footer action comment accepts
+the following formats:
+
+ %% prints a % character.
+
+ %H prints the `ebnf-eps-header' (which see) value.
+
+ %F prints the `ebnf-eps-footer' value.
+
+Any other format is ignored, that is, if, for example, it's used %s then %s
+characters are stripped out from the footer. If footer action comment is an
+empty string, no footer is generated until a non-empty footer is specified or
+`ebnf-eps-footer' has a non-empty string value."
+ :type '(repeat (choice :menu-tag "EPS Footer"
+ :tag "EPS Footer"
+ string symbol (const :tag "No Footer" nil )))
+ :version "22"
+ :group 'ebnf2ps)
+
+
(defcustom ebnf-entry-percentage 0.5 ; middle
"*Specify entry height on alternatives.
:version "20"
:group 'ebnf-optimization)
+
+(defcustom ebnf-log nil
+ "*Non-nil means generate log messages.
+
+The log messages are generated into the buffer *Ebnf2ps Log*.
+These messages are intended to help debugging ebnf2ps."
+ :type 'boolean
+ :version "22"
+ :group 'ebnf2ps)
+
\f
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; To make this file smaller, some commands go in a separate file.
(interactive
(list (read-file-name "Directory containing EBNF files (print): "
nil default-directory)))
+ (ebnf-log-header "(ebnf-print-directory %S)" directory)
(ebnf-directory 'ebnf-print-buffer directory))
See also `ebnf-print-buffer'."
(interactive "fEBNF file to generate PostScript and print from: ")
+ (ebnf-log-header "(ebnf-print-file %S %S)" file do-not-kill-buffer-when-done)
(ebnf-file 'ebnf-print-buffer file do-not-kill-buffer-when-done))
the PostScript image in a file with that name. If FILENAME is a
number, prompt the user for the name of the file to save in."
(interactive (list (ps-print-preprint current-prefix-arg)))
+ (ebnf-log-header "(ebnf-print-buffer %S)" filename)
(ebnf-print-region (point-min) (point-max) filename))
"Generate and print a PostScript syntactic chart image of the region.
Like `ebnf-print-buffer', but prints just the current region."
(interactive (list (point) (mark) (ps-print-preprint current-prefix-arg)))
+ (ebnf-log-header "(ebnf-print-region %S %S %S)" from to filename)
(run-hooks 'ebnf-hook)
(or (ebnf-spool-region from to)
(ps-do-despool filename)))
(interactive
(list (read-file-name "Directory containing EBNF files (spool): "
nil default-directory)))
+ (ebnf-log-header "(ebnf-spool-directory %S)" directory)
(ebnf-directory 'ebnf-spool-buffer directory))
See also `ebnf-spool-buffer'."
(interactive "fEBNF file to generate PostScript and spool from: ")
+ (ebnf-log-header "(ebnf-spool-file %S %S)" file do-not-kill-buffer-when-done)
(ebnf-file 'ebnf-spool-buffer file do-not-kill-buffer-when-done))
Use the command `ebnf-despool' to send the spooled images to the printer."
(interactive)
+ (ebnf-log-header "(ebnf-spool-buffer)")
(ebnf-spool-region (point-min) (point-max)))
Use the command `ebnf-despool' to send the spooled images to the printer."
(interactive "r")
+ (ebnf-log-header "(ebnf-spool-region %S)" from to)
(ebnf-generate-region from to 'ebnf-generate))
(interactive
(list (read-file-name "Directory containing EBNF files (EPS): "
nil default-directory)))
+ (ebnf-log-header "(ebnf-eps-directory %S)" directory)
(ebnf-directory 'ebnf-eps-buffer directory))
See also `ebnf-eps-buffer'."
(interactive "fEBNF file to generate EPS file from: ")
+ (ebnf-log-header "(ebnf-eps-file %S %S)" file do-not-kill-buffer-when-done)
(ebnf-file 'ebnf-eps-buffer file do-not-kill-buffer-when-done))
file name used in this case will be \"ebnf--A_B_+_C.eps\".
WARNING: This function does *NOT* ask any confirmation to override existing
- files."
+ files."
(interactive)
+ (ebnf-log-header "(ebnf-eps-buffer)")
(ebnf-eps-region (point-min) (point-max)))
file name used in this case will be \"ebnf--A_B_+_C.eps\".
WARNING: This function does *NOT* ask any confirmation to override existing
- files."
+ files."
(interactive "r")
+ (ebnf-log-header "(ebnf-eps-region %S %S)" from to)
(let ((ebnf-eps-executing t))
(ebnf-generate-region from to 'ebnf-generate-eps)))
(interactive
(list (read-file-name "Directory containing EBNF files (syntax): "
nil default-directory)))
+ (ebnf-log-header "(ebnf-syntax-directory %S)" directory)
(ebnf-directory 'ebnf-syntax-buffer directory))
See also `ebnf-syntax-buffer'."
(interactive "fEBNF file to check syntax: ")
+ (ebnf-log-header "(ebnf-syntax-file %S %S)" file do-not-kill-buffer-when-done)
(ebnf-file 'ebnf-syntax-buffer file do-not-kill-buffer-when-done))
(defun ebnf-syntax-buffer ()
"Do a syntactic analysis of the current buffer."
(interactive)
+ (ebnf-log-header "(ebnf-syntax-buffer)")
(ebnf-syntax-region (point-min) (point-max)))
;;;###autoload
(defun ebnf-syntax-region (from to)
- "Do a syntactic analysis of region."
+ "Do a syntactic analysis of a region."
(interactive "r")
+ (ebnf-log-header "(ebnf-syntax-region %S %S)" from to)
(ebnf-generate-region from to nil))
\f
"
;;; ebnf2ps.el version %s
+;;; Emacs version %S
+
\(setq ebnf-special-show-delimiter %S
ebnf-special-font %s
ebnf-special-shape %s
ebnf-iso-normalize-p %S
ebnf-file-suffix-regexp %S
ebnf-eps-prefix %S
+ ebnf-eps-header-font %s
+ ebnf-eps-header %s
+ ebnf-eps-footer-font %s
+ ebnf-eps-footer %s
ebnf-entry-percentage %S
ebnf-color-p %S
ebnf-line-width %S
ebnf-line-color %S
+ ebnf-arrow-extra-width %S
+ ebnf-arrow-scale %S
ebnf-debug-ps %S
ebnf-use-float-format %S
ebnf-stop-on-error %S
ebnf-yac-ignore-error-recovery %S
ebnf-ignore-empty-rule %S
- ebnf-optimize %S)
+ ebnf-optimize %S
+ ebnf-log %S)
;;; ebnf2ps.el - end of settings
"
ebnf-version
+ emacs-version
ebnf-special-show-delimiter
(ps-print-quote ebnf-special-font)
(ps-print-quote ebnf-special-shape)
ebnf-iso-normalize-p
ebnf-file-suffix-regexp
ebnf-eps-prefix
+ (ps-print-quote ebnf-eps-header-font)
+ (ps-print-quote ebnf-eps-header)
+ (ps-print-quote ebnf-eps-footer-font)
+ (ps-print-quote ebnf-eps-footer)
ebnf-entry-percentage
ebnf-color-p
ebnf-line-width
ebnf-line-color
+ ebnf-arrow-extra-width
+ ebnf-arrow-scale
ebnf-debug-ps
ebnf-use-float-format
ebnf-stop-on-error
ebnf-yac-ignore-error-recovery
ebnf-ignore-empty-rule
- ebnf-optimize))
+ ebnf-optimize
+ ebnf-log))
\f
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
ebnf-iso-normalize-p
ebnf-file-suffix-regexp
ebnf-eps-prefix
+ ebnf-eps-header-font
+ ebnf-eps-header
+ ebnf-eps-footer-font
+ ebnf-eps-footer
ebnf-entry-percentage
ebnf-color-p
ebnf-line-width
(ebnf-iso-normalize-p . nil)
(ebnf-file-suffix-regexp . "\.[Bb][Nn][Ff]$")
(ebnf-eps-prefix . "ebnf--")
+ (ebnf-eps-header-font . '(11 Helvetica "Black" "White" bold))
+ (ebnf-eps-header . nil)
+ (ebnf-eps-footer-font . '(7 Helvetica "Black" "White" bold))
+ (ebnf-eps-footer . nil)
(ebnf-entry-percentage . 0.5)
(ebnf-color-p . (or (fboundp 'x-color-values) ; Emacs
(fboundp 'color-instance-rgb-components))) ; XEmacs
;; Style commands
+;;;###autoload
+(defun ebnf-find-style (name)
+ "Return style definition if NAME is already defined; otherwise, return nil.
+
+See `ebnf-style-database' documentation."
+ (interactive "SStyle name: ")
+ (assoc name ebnf-style-database))
+
+
;;;###autoload
(defun ebnf-insert-style (name inherits &rest values)
"Insert a new style NAME with inheritance INHERITS and values VALUES.
;; Internal variables
-(defvar ebnf-eps-buffer-name " *EPS*")
-(defvar ebnf-parser-func nil)
-(defvar ebnf-eps-executing nil)
-(defvar ebnf-eps-upper-x 0.0)
+(defvar ebnf-eps-buffer-name " *EPS*")
+(defvar ebnf-parser-func nil)
+(defvar ebnf-eps-executing nil)
+(defvar ebnf-eps-header-comment nil)
+(defvar ebnf-eps-footer-comment nil)
+(defvar ebnf-eps-upper-x 0.0)
(make-variable-buffer-local 'ebnf-eps-upper-x)
-(defvar ebnf-eps-upper-y 0.0)
+(defvar ebnf-eps-upper-y 0.0)
(make-variable-buffer-local 'ebnf-eps-upper-y)
-(defvar ebnf-eps-prod-width 0.0)
+(defvar ebnf-eps-prod-width 0.0)
(make-variable-buffer-local 'ebnf-eps-prod-width)
-(defvar ebnf-eps-max-height 0.0)
+(defvar ebnf-eps-max-height 0.0)
(make-variable-buffer-local 'ebnf-eps-max-height)
-(defvar ebnf-eps-max-width 0.0)
+(defvar ebnf-eps-max-width 0.0)
(make-variable-buffer-local 'ebnf-eps-max-width)
See section \"Actions in Comments\" in ebnf2ps documentation.")
+(defvar ebnf-eps-file-alist nil
+"Alist associating file name with EPS header and footer.
+
+Each element has the following form:
+
+ (EPS-FILENAME HEADER FOOTER)
+
+EPS-FILENAME is the EPS file name.
+HEADER is the header string or nil.
+FOOTER is the footer string or nil.
+
+It's generated during parsing and used during EPS generation.
+
+See `ebnf-eps-context' and section \"Actions in Comments\" in ebnf2ps
+documentation.")
+
+
(defvar ebnf-eps-production-list nil
"Alist associating production name with EPS file name list.
`ebnf-chart-shape'.")
-(defvar ebnf-limit nil)
-(defvar ebnf-action nil)
-(defvar ebnf-action-list nil)
+(defvar ebnf-limit nil)
+(defvar ebnf-action nil)
+(defvar ebnf-action-list nil)
-(defvar ebnf-default-p nil)
+(defvar ebnf-default-p nil)
-(defvar ebnf-font-height-P 0)
-(defvar ebnf-font-height-T 0)
-(defvar ebnf-font-height-NT 0)
-(defvar ebnf-font-height-S 0)
-(defvar ebnf-font-height-E 0)
-(defvar ebnf-font-height-R 0)
-(defvar ebnf-font-width-P 0)
-(defvar ebnf-font-width-T 0)
-(defvar ebnf-font-width-NT 0)
-(defvar ebnf-font-width-S 0)
-(defvar ebnf-font-width-E 0)
-(defvar ebnf-font-width-R 0)
-(defvar ebnf-space-T 0)
-(defvar ebnf-space-NT 0)
-(defvar ebnf-space-S 0)
-(defvar ebnf-space-E 0)
-(defvar ebnf-space-R 0)
+(defvar ebnf-font-height-P 0)
+(defvar ebnf-font-height-T 0)
+(defvar ebnf-font-height-NT 0)
+(defvar ebnf-font-height-S 0)
+(defvar ebnf-font-height-E 0)
+(defvar ebnf-font-height-R 0)
+(defvar ebnf-font-width-P 0)
+(defvar ebnf-font-width-T 0)
+(defvar ebnf-font-width-NT 0)
+(defvar ebnf-font-width-S 0)
+(defvar ebnf-font-width-E 0)
+(defvar ebnf-font-width-R 0)
+(defvar ebnf-space-T 0)
+(defvar ebnf-space-NT 0)
+(defvar ebnf-space-S 0)
+(defvar ebnf-space-E 0)
+(defvar ebnf-space-R 0)
-(defvar ebnf-basic-width 0)
-(defvar ebnf-basic-height 0)
-(defvar ebnf-vertical-space 0)
-(defvar ebnf-horizontal-space 0)
+(defvar ebnf-basic-width-extra 0)
+(defvar ebnf-basic-width 0)
+(defvar ebnf-basic-height 0)
+(defvar ebnf-basic-empty-height 0)
+(defvar ebnf-vertical-space 0)
+(defvar ebnf-horizontal-space 0)
-(defvar ebnf-settings nil)
-(defvar ebnf-fonts-required nil)
+(defvar ebnf-settings nil)
+(defvar ebnf-fonts-required nil)
(defconst ebnf-debug
% --- Flow Stuff
-% height prepare_height |- line_height corner_height corner_height
-/prepare_height
+% height prepare-height |- line_height corner_height corner_height
+/prepare-height
{dup 0 gt
{T sub hT}
{T add hT neg}ifelse
{0.5 mul dup
1 corner_RA
0 corner_RD}
- {prepare_height
+ {prepare-height
1 corner_RA
exch 0 exch rlineto
0 corner_RD
% \\
% -
/LLoop
-{prepare_height
+{prepare-height
3 corner_LA
exch 0 exch rlineto
0 corner_RD
{0.5 mul dup
1 corner_LA
0 corner_LD}
- {prepare_height
+ {prepare-height
1 corner_LA
exch 0 exch rlineto
0 corner_LD
% /
% -
/RLoop
-{prepare_height
+{prepare-height
1 corner_RA
exch 0 exch rlineto
0 corner_LD
"EBNF EPS end")
\f
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Header & Footer
+
+
+(defun ebnf-eps-header-footer (value)
+ ;; evaluate header/footer value
+ ;; return a string or nil
+ (let ((tmp (if (symbolp value)
+ (cond ((fboundp value) (funcall value))
+ ((boundp value) (symbol-value value))
+ (t nil))
+ value)))
+ (and (stringp tmp) tmp)))
+
+
+(defun ebnf-eps-header ()
+ ;; evaluate header value
+ (ebnf-eps-header-footer ebnf-eps-header))
+
+
+(defun ebnf-eps-footer ()
+ ;; evaluate footer value
+ (ebnf-eps-header-footer ebnf-eps-footer))
+
+
+;; hacked fom `ps-output-string-prim' (ps-print.el)
+(defun ebnf-eps-string (string)
+ (let* ((str (string-as-unibyte string))
+ (len (length str))
+ (index 0)
+ (new "(") ; insert start-string delimiter
+ start special)
+ ;; Find and quote special characters as necessary for PS
+ ;; This skips everything except control chars, non-ASCII chars, (, ) and \.
+ (while (setq start (string-match "[^]-~ -'*-[]" str index))
+ (setq special (aref str start)
+ new (concat new
+ (substring str index start)
+ (if (and (<= 0 special) (<= special 255))
+ (aref ps-string-escape-codes special)
+ ;; insert hexadecimal representation if character
+ ;; code is out of range
+ (format "\\%04X" special)))
+ index (1+ start)))
+ (concat new
+ (and (< index len)
+ (substring str index len))
+ ")"))) ; insert end-string delimiter
+
+
+(defun ebnf-eps-header-footer-comment (str)
+ ;; parse header/footer comment string
+ (let ((len (1- (length str)))
+ (index 0)
+ new start fmt)
+ (while (setq start (string-match "%" str index))
+ (setq fmt (if (< start len) (aref str (1+ start)) ?\?)
+ new (concat new
+ (substring str index start)
+ (cond ((= fmt ?%) "%")
+ ((= fmt ?H) (ebnf-eps-header))
+ ((= fmt ?F) (ebnf-eps-footer))
+ (t nil)
+ ))
+ index (+ start 2)))
+ (ebnf-eps-string (concat new
+ (and (<= index len)
+ (substring str index (1+ len)))))))
+
+
+(defun ebnf-eps-header-footer-p (value)
+ ;; return t if value is non-nil and is not an empty string
+ (not (or (null value)
+ (and (stringp value) (string= value "")))))
+
+
+(defun ebnf-eps-header-comment (str)
+ ;; set header comment if header is on
+ (when (ebnf-eps-header-footer-p ebnf-eps-header)
+ (setq ebnf-eps-header-comment (ebnf-eps-header-footer-comment str))))
+
+
+(defun ebnf-eps-footer-comment (str)
+ ;; set footer comment if footer is on
+ (when (ebnf-eps-header-footer-p ebnf-eps-footer)
+ (setq ebnf-eps-footer-comment (ebnf-eps-header-footer-comment str))))
+
+
+(defun ebnf-eps-header-footer-file (filename)
+ ;; associate header and footer with a filename
+ (let ((filehf (assoc filename ebnf-eps-file-alist))
+ (header (or ebnf-eps-header-comment (ebnf-eps-header)))
+ (footer (or ebnf-eps-footer-comment (ebnf-eps-footer))))
+ (if (null filehf)
+ (setq ebnf-eps-file-alist (cons (list filename header footer)
+ ebnf-eps-file-alist))
+ (setcar (nthcdr 1 filehf) header)
+ (setcar (nthcdr 2 filehf) footer))))
+
+
+(defun ebnf-eps-header-footer-set (filename)
+ ;; set header and footer from a filename
+ (let ((header-footer (assoc filename ebnf-eps-file-alist)))
+ (setq ebnf-eps-header-comment (nth 1 header-footer)
+ ebnf-eps-footer-comment (nth 2 header-footer))))
+
+\f
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Formatting
horizontal (memq (ebnf-node-action prod)
ebnf-action-list))
;; generate production in EPS buffer
- (save-excursion
- (set-buffer eps-buffer)
+ (with-current-buffer eps-buffer
(setq ebnf-eps-upper-x 0.0
ebnf-eps-upper-y 0.0
ebnf-eps-max-width prod-width
(ebnf-eps-finish-and-write eps-buffer
(ebnf-eps-filename prod-name)))
;; prepare for next loop
- (save-excursion
- (set-buffer eps-buffer)
+ (with-current-buffer eps-buffer
(erase-buffer))
(setq ebnf-tree (cdr ebnf-tree)))
;; write and kill temporary buffers
prod-width prod-height eps-buffer)
(while prod-list
(add-to-list file-list-sym (car prod-list))
- (save-excursion
- (set-buffer (get-buffer-create (concat " *" (car prod-list) "*")))
+ (with-current-buffer (get-buffer-create (concat " *" (car prod-list) "*"))
(goto-char (point-max))
(cond
;; first production
(if sep
(let ((ebnf-direction "L"))
(ebnf-node-generation sep))
- (ebnf-empty-alternative (- width ebnf-horizontal-space))))
+ (ebnf-empty-alternative (- width
+ ebnf-horizontal-space
+ ebnf-basic-width-extra))))
(ps-output "EOS\n"))
(if node-sep
(- (ebnf-node-height node-sep)
(ebnf-node-entry node-sep))
- 0))))
+ ebnf-basic-empty-height))))
(ps-output (ebnf-format-float entry
(+ (- (ebnf-node-height node-list)
list-entry)
(if (ebnf-node-separator zero-or-more)
(let ((ebnf-direction "L"))
(ebnf-node-generation (ebnf-node-separator zero-or-more)))
- (ebnf-empty-alternative (- width ebnf-horizontal-space))))
+ (ebnf-empty-alternative (- width
+ ebnf-horizontal-space
+ ebnf-basic-width-extra))))
(ps-output "EOS\n"))
(defvar ebnf-map-name
(let ((map (make-vector 256 ?\_)))
- (mapcar #'(lambda (char)
- (aset map char char))
- (concat "#$%&+-.0123456789=?@~"
- "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- "abcdefghijklmnopqrstuvwxyz"))
+ (mapc #'(lambda (char)
+ (aset map char char))
+ (concat "#$%&+-.0123456789=?@~"
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+ "abcdefghijklmnopqrstuvwxyz"))
map))
(defun ebnf-eps-filename (str)
(let* ((len (length str))
(stri 0)
- (new (make-string len ?\s)))
+ ;; to keep compatibility with Emacs 20 & 21:
+ ;; DO NOT REPLACE `?\ ' BY `?\s'
+ (new (make-string len ?\ )))
(while (< stri len)
(aset new stri (aref ebnf-map-name (aref str stri)))
(setq stri (1+ stri)))
(defun ebnf-parse-and-sort (start)
+ (ebnf-log "(ebnf-parse-and-sort %S)" start)
(ebnf-begin-job)
(let ((tree (funcall ebnf-parser-func start)))
(if ebnf-sort-production
ebnf-action nil
ebnf-default-p nil
ebnf-eps-context nil
+ ebnf-eps-file-alist nil
ebnf-eps-production-list nil
+ ebnf-eps-header-comment nil
+ ebnf-eps-footer-comment nil
ebnf-eps-upper-x 0.0
ebnf-eps-upper-y 0.0
ebnf-font-height-P (ebnf-font-height ebnf-production-font)
ebnf-space-E (* ebnf-font-height-E 0.5)
ebnf-space-R (* ebnf-font-height-R 0.5))
(let ((basic (+ ebnf-font-height-T ebnf-font-height-NT)))
- (setq ebnf-basic-width (* basic 0.5)
- ebnf-horizontal-space (+ basic basic)
- ebnf-basic-height ebnf-basic-width
- ebnf-vertical-space ebnf-basic-width)
+ (setq ebnf-basic-width (* basic 0.5)
+ ebnf-horizontal-space (+ basic basic)
+ ebnf-basic-empty-height (* ebnf-basic-width 0.5)
+ ebnf-basic-height ebnf-basic-width
+ ebnf-vertical-space ebnf-basic-width
+ ebnf-basic-width-extra (- ebnf-basic-width
+ ebnf-arrow-extra-width
+ 0.1)) ; error factor
;; ensures value is greater than zero
(or (and (numberp ebnf-production-horizontal-space)
(> ebnf-production-horizontal-space 0.0))
;; ensures value is greater than zero
(or (and (numberp ebnf-production-vertical-space)
(> ebnf-production-vertical-space 0.0))
- (setq ebnf-production-vertical-space basic))))
+ (setq ebnf-production-vertical-space basic)))
+ (ebnf-log "(ebnf-begin-job)")
+ (ebnf-log " ebnf-arrow-extra-width ............ : %7.3f" ebnf-arrow-extra-width)
+ (ebnf-log " ebnf-arrow-scale .................. : %7.3f" ebnf-arrow-scale)
+ (ebnf-log " ebnf-basic-width-extra ............ : %7.3f" ebnf-basic-width-extra)
+ (ebnf-log " ebnf-basic-width .................. : %7.3f (T)" ebnf-basic-width)
+ (ebnf-log " ebnf-horizontal-space ............. : %7.3f (4T)" ebnf-horizontal-space)
+ (ebnf-log " ebnf-basic-empty-height ........... : %7.3f (hT)" ebnf-basic-empty-height)
+ (ebnf-log " ebnf-basic-height ................. : %7.3f (T)" ebnf-basic-height)
+ (ebnf-log " ebnf-vertical-space ............... : %7.3f (T)" ebnf-vertical-space)
+ (ebnf-log " ebnf-production-horizontal-space .. : %7.3f (2T)" ebnf-production-horizontal-space)
+ (ebnf-log " ebnf-production-vertical-space .... : %7.3f (2T)" ebnf-production-vertical-space))
(defsubst ebnf-shape-value (sym alist)
(defun ebnf-begin-file ()
(ps-flush-output)
- (save-excursion
- (set-buffer ps-spool-buffer)
+ (with-current-buffer ps-spool-buffer
(goto-char (point-min))
(and (search-forward "%%Creator: " nil t)
(not (search-forward "& ebnf2ps v"
- (save-excursion (end-of-line) (point))
+ (line-end-position)
t))
(progn
;; adjust creator comment
(end-of-line)
+ ;; (backward-char)
(insert " & ebnf2ps v" ebnf-version)
;; insert ebnf settings & engine
(goto-char (point-max))
(defun ebnf-eps-finish-and-write (buffer filename)
(when (buffer-modified-p buffer)
- (save-excursion
- (set-buffer buffer)
+ (with-current-buffer buffer
+ (ebnf-eps-header-footer-set filename)
(setq ebnf-eps-upper-x (max ebnf-eps-upper-x ebnf-eps-max-width)
ebnf-eps-upper-y (if (zerop ebnf-eps-upper-y)
ebnf-eps-max-height
ebnf-non-terminal-font
ebnf-special-font
ebnf-except-font
- ebnf-repeat-font)))
+ ebnf-repeat-font
+ ebnf-eps-header-font
+ ebnf-eps-footer-font)))
"\n%%+ font ")))
"\n%%Pages: 0\n%%EndComments\n\n%%BeginProlog\n"
ebnf-eps-prologue)
(setq ebnf-settings
(concat
"\n\n% === begin EBNF settings\n\n"
+ (format "/Header %s def\n"
+ (or ebnf-eps-header-comment "()"))
+ (format "/Footer %s def\n"
+ (or ebnf-eps-footer-comment "()"))
+ ;; header
+ (format "/ShowHeader %s def\n"
+ (ebnf-boolean
+ (ebnf-eps-header-footer-p ebnf-eps-header)))
+ (format "/fH %s /%s DefFont\n"
+ (ebnf-format-float
+ (ebnf-font-size ebnf-eps-header-font))
+ (ebnf-font-name-select ebnf-eps-header-font))
+ (ebnf-format-color "/ForegroundH %s def %% %s\n"
+ (ebnf-font-foreground ebnf-eps-header-font)
+ "Black")
+ (ebnf-format-color "/BackgroundH %s def %% %s\n"
+ (ebnf-font-background ebnf-eps-header-font)
+ "White")
+ (format "/EffectH %d def\n"
+ (ebnf-font-attributes ebnf-eps-header-font))
+ ;; footer
+ (format "/ShowFooter %s def\n"
+ (ebnf-boolean
+ (ebnf-eps-header-footer-p ebnf-eps-footer)))
+ (format "/fF %s /%s DefFont\n"
+ (ebnf-format-float
+ (ebnf-font-size ebnf-eps-footer-font))
+ (ebnf-font-name-select ebnf-eps-footer-font))
+ (ebnf-format-color "/ForegroundF %s def %% %s\n"
+ (ebnf-font-foreground ebnf-eps-footer-font)
+ "Black")
+ (ebnf-format-color "/BackgroundF %s def %% %s\n"
+ (ebnf-font-background ebnf-eps-footer-font)
+ "White")
+ (format "/EffectF %d def\n"
+ (ebnf-font-attributes ebnf-eps-footer-font))
;; production
(format "/fP %s /%s DefFont\n"
(ebnf-format-float (ebnf-font-size ebnf-production-font))
(defun ebnf-dimensions (tree)
+ (ebnf-log "(ebnf-dimensions tree)")
(let ((ebnf-total (length tree))
(ebnf-nprod 0))
- (mapcar 'ebnf-production-dimension tree))
+ (mapc 'ebnf-production-dimension tree))
tree)
;; [production width-fun dim-fun entry height width name production action]
(defun ebnf-production-dimension (production)
+ (ebnf-log "(ebnf-production-dimension production)")
(ebnf-message-info "Calculating dimensions")
(ebnf-node-dimension-func (ebnf-node-production production))
(let* ((prod (ebnf-node-production production))
(ebnf-node-height production height)
(ebnf-node-width production (+ (ebnf-node-width prod)
ebnf-line-width
- ebnf-horizontal-space))))
+ ebnf-horizontal-space
+ ebnf-basic-width-extra)))
+ (ebnf-log " production name : %S" (ebnf-node-name production))
+ (ebnf-log " production entry : %7.3f" (ebnf-node-entry production))
+ (ebnf-log " production height : %7.3f" (ebnf-node-height production))
+ (ebnf-log " production width : %7.3f" (ebnf-node-width production)))
;; [terminal width-fun dim-fun entry height width name]
(defun ebnf-terminal-dimension (terminal)
+ (ebnf-log "(ebnf-terminal-dimension terminal)")
(ebnf-terminal-dimension1 terminal
ebnf-font-height-T
ebnf-font-width-T
;; [non-terminal width-fun dim-fun entry height width name]
(defun ebnf-non-terminal-dimension (non-terminal)
+ (ebnf-log "(ebnf-non-terminal-dimension non-terminal)")
(ebnf-terminal-dimension1 non-terminal
ebnf-font-height-NT
ebnf-font-width-NT
;; [special width-fun dim-fun entry height width name]
(defun ebnf-special-dimension (special)
+ (ebnf-log "(ebnf-special-dimension special)")
(ebnf-terminal-dimension1 special
ebnf-font-height-S
ebnf-font-width-S
(len (length (ebnf-node-name node))))
(ebnf-node-entry node (* height 0.5))
(ebnf-node-height node height)
- (ebnf-node-width node (+ ebnf-basic-width ebnf-arrow-extra-width space
+ (ebnf-node-width node (+ ebnf-basic-width
+ ebnf-arrow-extra-width
+ space
(* len font-width)
- space ebnf-basic-width))))
+ space
+ ebnf-basic-width)))
+ (ebnf-log " name : %S" (ebnf-node-name node))
+ (ebnf-log " entry : %7.3f" (ebnf-node-entry node))
+ (ebnf-log " height : %7.3f" (ebnf-node-height node))
+ (ebnf-log " width : %7.3f" (ebnf-node-width node)))
(defconst ebnf-null-vector (vector t t t 0.0 0.0 0.0))
;; [repeat width-fun dim-fun entry height width times element]
(defun ebnf-repeat-dimension (repeat)
+ (ebnf-log "(ebnf-repeat-dimension repeat)")
(let ((times (ebnf-node-name repeat))
(element (ebnf-node-separator repeat)))
(if element
ebnf-arrow-extra-width
ebnf-space-R ebnf-space-R ebnf-space-R
ebnf-horizontal-space
- (* (length times) ebnf-font-width-R)))))
+ (* (length times) ebnf-font-width-R))))
+ (ebnf-log " repeat entry : %7.3f" (ebnf-node-entry repeat))
+ (ebnf-log " repeat height : %7.3f" (ebnf-node-height repeat))
+ (ebnf-log " repeat width : %7.3f" (ebnf-node-width repeat)))
;; [except width-fun dim-fun entry height width element element]
(defun ebnf-except-dimension (except)
+ (ebnf-log "(ebnf-except-dimension except)")
(let ((factor (ebnf-node-list except))
(element (ebnf-node-separator except)))
(ebnf-node-dimension-func factor)
ebnf-space-E ebnf-space-E
ebnf-space-E ebnf-space-E
ebnf-font-width-E
- ebnf-horizontal-space))))
+ ebnf-horizontal-space)))
+ (ebnf-log " except entry : %7.3f" (ebnf-node-entry except))
+ (ebnf-log " except height : %7.3f" (ebnf-node-height except))
+ (ebnf-log " except width : %7.3f" (ebnf-node-width except)))
;; [alternative width-fun dim-fun entry height width list]
(defun ebnf-alternative-dimension (alternative)
+ (ebnf-log "(ebnf-alternative-dimension alternative)")
(let ((body (ebnf-node-list alternative))
(lis (ebnf-node-list alternative)))
(while lis
(- (ebnf-node-height tail)
(ebnf-node-entry tail))))))
(ebnf-node-height alternative height)
- (ebnf-node-width alternative (+ width ebnf-horizontal-space))
- (ebnf-node-list alternative body))))
+ (ebnf-node-width alternative (+ width
+ ebnf-horizontal-space
+ ebnf-basic-width-extra))
+ (ebnf-node-list alternative body)))
+ (ebnf-log " alternative entry : %7.3f" (ebnf-node-entry alternative))
+ (ebnf-log " alternative height : %7.3f" (ebnf-node-height alternative))
+ (ebnf-log " alternative width : %7.3f" (ebnf-node-width alternative)))
;; [optional width-fun dim-fun entry height width element]
(defun ebnf-optional-dimension (optional)
+ (ebnf-log "(ebnf-optional-dimension optional)")
(let ((body (ebnf-node-list optional)))
(ebnf-node-dimension-func body)
(ebnf-node-entry optional (ebnf-node-entry body))
(ebnf-node-height optional (+ (ebnf-node-height body)
ebnf-vertical-space))
(ebnf-node-width optional (+ (ebnf-node-width body)
- ebnf-horizontal-space))))
+ ebnf-horizontal-space)))
+ (ebnf-log " optional entry : %7.3f" (ebnf-node-entry optional))
+ (ebnf-log " optional height : %7.3f" (ebnf-node-height optional))
+ (ebnf-log " optional width : %7.3f" (ebnf-node-width optional)))
;; [one-or-more width-fun dim-fun entry height width element separator]
(defun ebnf-one-or-more-dimension (or-more)
+ (ebnf-log "(ebnf-one-or-more-dimension or-more)")
(let ((list-part (ebnf-node-list or-more))
(sep-part (ebnf-node-separator or-more)))
(ebnf-node-dimension-func list-part)
(ebnf-node-dimension-func sep-part))
(let ((height (+ (if sep-part
(ebnf-node-height sep-part)
- 0.0)
+ ebnf-basic-empty-height)
ebnf-vertical-space
(ebnf-node-height list-part)))
(width (max (if sep-part
(when sep-part
(ebnf-adjust-width list-part width)
(ebnf-adjust-width sep-part width))
- (ebnf-node-entry or-more (+ (- height (ebnf-node-height list-part))
+ (ebnf-node-entry or-more (+ (- height
+ (ebnf-node-height list-part))
(ebnf-node-entry list-part)))
(ebnf-node-height or-more height)
- (ebnf-node-width or-more (+ width ebnf-horizontal-space)))))
+ (ebnf-node-width or-more (+ width
+ ebnf-horizontal-space
+ ebnf-basic-width-extra))))
+ (ebnf-log " one-or-more entry : %7.3f" (ebnf-node-entry or-more))
+ (ebnf-log " one-or-more height : %7.3f" (ebnf-node-height or-more))
+ (ebnf-log " one-or-more width : %7.3f" (ebnf-node-width or-more)))
;; [zero-or-more width-fun dim-fun entry height width element separator]
(defun ebnf-zero-or-more-dimension (or-more)
+ (ebnf-log "(ebnf-zero-or-more-dimension or-more)")
(let ((list-part (ebnf-node-list or-more))
(sep-part (ebnf-node-separator or-more)))
(ebnf-node-dimension-func list-part)
(ebnf-node-dimension-func sep-part))
(let ((height (+ (if sep-part
(ebnf-node-height sep-part)
- 0.0)
+ ebnf-basic-empty-height)
ebnf-vertical-space
(ebnf-node-height list-part)
ebnf-vertical-space))
(ebnf-adjust-width sep-part width))
(ebnf-node-entry or-more height)
(ebnf-node-height or-more height)
- (ebnf-node-width or-more (+ width ebnf-horizontal-space)))))
+ (ebnf-node-width or-more (+ width
+ ebnf-horizontal-space
+ ebnf-basic-width-extra))))
+ (ebnf-log " zero-or-more entry : %7.3f" (ebnf-node-entry or-more))
+ (ebnf-log " zero-or-more height : %7.3f" (ebnf-node-height or-more))
+ (ebnf-log " zero-or-more width : %7.3f" (ebnf-node-width or-more)))
;; [sequence width-fun dim-fun entry height width list]
(defun ebnf-sequence-dimension (sequence)
+ (ebnf-log "(ebnf-sequence-dimension sequence)")
(let ((above 0.0)
(below 0.0)
(width 0.0)
width (+ width (ebnf-node-width node))))
(ebnf-node-entry sequence above)
(ebnf-node-height sequence (+ above below))
- (ebnf-node-width sequence width)))
+ (ebnf-node-width sequence width))
+ (ebnf-log " sequence entry : %7.3f" (ebnf-node-entry sequence))
+ (ebnf-log " sequence height : %7.3f" (ebnf-node-height sequence))
+ (ebnf-log " sequence width : %7.3f" (ebnf-node-width sequence)))
\f
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(let ((filename (ebnf-eps-filename name)))
(if (member filename ebnf-eps-context)
(error "Try to open an already opened EPS file: %s" filename)
- (setq ebnf-eps-context (cons filename ebnf-eps-context)))))
+ (setq ebnf-eps-context (cons filename ebnf-eps-context)))
+ (ebnf-eps-header-footer-file filename)))
(defun ebnf-eps-remove-context (name)
(defun ebnf-eps-add-production (header)
- (and ebnf-eps-executing
- ebnf-eps-context
- (let ((prod (assoc header ebnf-eps-production-list)))
- (if prod
- (setcdr prod (append ebnf-eps-context (cdr prod)))
- (setq ebnf-eps-production-list
- (cons (cons header (ebnf-dup-list ebnf-eps-context))
- ebnf-eps-production-list))))))
+ (when ebnf-eps-executing
+ (if ebnf-eps-context
+ (let ((prod (assoc header ebnf-eps-production-list)))
+ (if prod
+ (setcdr prod (ebnf-dup-list
+ (append ebnf-eps-context (cdr prod))))
+ (setq ebnf-eps-production-list
+ (cons (cons header (ebnf-dup-list ebnf-eps-context))
+ ebnf-eps-production-list))))
+ (ebnf-eps-header-footer-file (ebnf-eps-filename header)))))
(defun ebnf-dup-list (old)
(defun ebnf-trim-right (str)
(let* ((len (1- (length str)))
(index len))
- (while (and (> index 0) (= (aref str index) ?\s))
+ ;; to keep compatibility with Emacs 20 & 21:
+ ;; DO NOT REPLACE `?\ ' BY `?\s'
+ (while (and (> index 0) (= (aref str index) ?\ ))
(setq index (1- index)))
(if (= index len)
str
(defun ebnf-make-empty (&optional width)
- (vector 'ebnf-generate-empty
- 'ignore
- 'ignore
- 0.0
- 0.0
- (or width ebnf-horizontal-space)))
+ (vector 'ebnf-generate-empty ; 0 generator
+ 'ignore ; 1 width fun
+ 'ignore ; 2 dimension fun
+ 0.0 ; 3 entry
+ 0.0 ; 4 height
+ (or width ebnf-horizontal-space))) ; 5 width
(defun ebnf-make-terminal (name)
(defun ebnf-make-terminal1 (name gen-func dim-func)
- (vector gen-func
- 'ignore
- dim-func
- 0.0
- 0.0
- 0.0
- (let ((len (length name)))
+ (vector gen-func ; 0 generatore
+ 'ignore ; 1 width fun
+ dim-func ; 2 dimension fun
+ 0.0 ; 3 entry
+ 0.0 ; 4 height
+ 0.0 ; 5 width
+ (let ((len (length name))) ; 6 name
(cond ((> len 3) name)
((= len 3) (concat name " "))
((= len 2) (concat " " name " "))
((= len 1) (concat " " name " "))
(t " ")))
- ebnf-default-p))
+ ebnf-default-p)) ; 7 is default?
(defun ebnf-make-one-or-more (list-part &optional sep-part)
(defun ebnf-make-or-more1 (gen-func dim-func list-part sep-part)
- (vector gen-func
- 'ebnf-element-width
- dim-func
- 0.0
- 0.0
- 0.0
- (if (listp list-part)
+ (vector gen-func ; 0 generator
+ 'ebnf-element-width ; 1 width fun
+ dim-func ; 2 dimension fun
+ 0.0 ; 3 entry
+ 0.0 ; 4 height
+ 0.0 ; 5 width
+ (if (listp list-part) ; 6 element
(ebnf-make-sequence list-part)
list-part)
- (if (and sep-part (listp sep-part))
+ (if (and sep-part (listp sep-part)) ; 7 separator
(ebnf-make-sequence sep-part)
sep-part)))
(defun ebnf-make-production (name prod action)
- (vector 'ebnf-generate-production
- 'ignore
- 'ebnf-production-dimension
- 0.0
- 0.0
- 0.0
- name
- prod
- action))
+ (vector 'ebnf-generate-production ; 0 generator
+ 'ignore ; 1 width fun
+ 'ebnf-production-dimension ; 2 dimension fun
+ 0.0 ; 3 entry
+ 0.0 ; 4 height
+ 0.0 ; 5 width
+ name ; 6 production name
+ prod ; 7 production body
+ action)) ; 8 production action
(defun ebnf-make-alternative (body)
- (vector 'ebnf-generate-alternative
- 'ebnf-alternative-width
- 'ebnf-alternative-dimension
- 0.0
- 0.0
- 0.0
- body))
+ (vector 'ebnf-generate-alternative ; 0 generator
+ 'ebnf-alternative-width ; 1 width fun
+ 'ebnf-alternative-dimension ; 2 dimension fun
+ 0.0 ; 3 entry
+ 0.0 ; 4 height
+ 0.0 ; 5 width
+ body)) ; 6 alternative list
(defun ebnf-make-optional (body)
- (vector 'ebnf-generate-optional
- 'ebnf-alternative-width
- 'ebnf-optional-dimension
- 0.0
- 0.0
- 0.0
- body))
+ (vector 'ebnf-generate-optional ; 0 generator
+ 'ebnf-alternative-width ; 1 width fun
+ 'ebnf-optional-dimension ; 2 dimension fun
+ 0.0 ; 3 entry
+ 0.0 ; 4 height
+ 0.0 ; 5 width
+ body)) ; 6 optional element
(defun ebnf-make-except (factor exception)
- (vector 'ebnf-generate-except
- 'ignore
- 'ebnf-except-dimension
- 0.0
- 0.0
- 0.0
- factor
- exception))
+ (vector 'ebnf-generate-except ; 0 generator
+ 'ignore ; 1 width fun
+ 'ebnf-except-dimension ; 2 dimension fun
+ 0.0 ; 3 entry
+ 0.0 ; 4 height
+ 0.0 ; 5 width
+ factor ; 6 base element
+ exception)) ; 7 exception element
(defun ebnf-make-repeat (times primary &optional upper)
- (vector 'ebnf-generate-repeat
- 'ignore
- 'ebnf-repeat-dimension
- 0.0
- 0.0
- 0.0
+ (vector 'ebnf-generate-repeat ; 0 generator
+ 'ignore ; 1 width fun
+ 'ebnf-repeat-dimension ; 2 dimension fun
+ 0.0 ; 3 entry
+ 0.0 ; 4 height
+ 0.0 ; 5 width
+ ; 6 times
(cond ((and times upper) ; L * U, L * L
(if (string= times upper)
(if (string= times "")
(concat "* " upper))
(t ; *
" * "))
- primary))
+ primary)) ; 7 element
(defun ebnf-make-sequence (seq)
- (vector 'ebnf-generate-sequence
- 'ebnf-sequence-width
- 'ebnf-sequence-dimension
- 0.0
- 0.0
- 0.0
- seq))
+ (vector 'ebnf-generate-sequence ; 0 generator
+ 'ebnf-sequence-width ; 1 width fun
+ 'ebnf-sequence-dimension ; 2 dimension fun
+ 0.0 ; 3 entry
+ 0.0 ; 4 height
+ 0.0 ; 5 width
+ seq)) ; 6 sequence
(defun ebnf-make-dup-sequence (node seq)
- (vector 'ebnf-generate-sequence
- 'ebnf-sequence-width
- 'ebnf-sequence-dimension
- (ebnf-node-entry node)
- (ebnf-node-height node)
- (ebnf-node-width node)
- seq))
+ (vector 'ebnf-generate-sequence ; 0 generator
+ 'ebnf-sequence-width ; 1 width fun
+ 'ebnf-sequence-dimension ; 2 dimension fun
+ (ebnf-node-entry node) ; 3 entry
+ (ebnf-node-height node) ; 4 height
+ (ebnf-node-width node) ; 5 width
+ seq)) ; 6 sequence
\f
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun ebnf-token-alternative (body sequence)
(if (null body)
(if (cdr sequence)
+ ;; no alternative
sequence
- (cons (car sequence)
+ ;; empty element
+ (cons (car sequence) ; token
(ebnf-make-empty)))
- (cons (car sequence)
+ (cons (car sequence) ; token
(let ((seq (cdr sequence)))
(if (and (= (length body) 1) (null seq))
+ ;; alternative with one element
(car body)
+ ;; a real alternative
(ebnf-make-alternative (nreverse (if seq
(cons seq body)
body))))))))
"Vector used to map characters to a special comment token.")
\f
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; Log message
+
+
+(defun ebnf-log-header (format-str &rest args)
+ (when ebnf-log
+ (apply
+ 'ebnf-log
+ (concat
+ "\n\n===============================================================\n\n"
+ format-str)
+ args)))
+
+
+(defun ebnf-log (format-str &rest args)
+ (when ebnf-log
+ (with-current-buffer (get-buffer-create "*Ebnf2ps Log*")
+ (goto-char (point-max))
+ (insert (apply 'format format-str args) "\n"))))
+
+\f
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; To make this file smaller, some commands go in a separate file.
;; But autoload them here to make the separation invisible.
(provide 'ebnf2ps)
-;;; arch-tag: 148bc8af-5398-468b-b922-eeb7afef3e4f
;;; ebnf2ps.el ends here
HCoop / bpt / emacs.git / blobdiff