From 0e58b4c23afa51c5d7b55a4d43546ae04c37279f Mon Sep 17 00:00:00 2001 From: Stefan Monnier Date: Thu, 28 Mar 2002 16:13:01 +0000 Subject: [PATCH] (xml-lite-in-string-p): Use sgml-lexical-context. (xml-lite-parse-tag-backward): Use sgml-tag-syntax-table. (xml-lite-get-context): Check that open/close tags match. Don't stop scanning while we're ignoring matching tags. --- lisp/textmodes/xml-lite.el | 165 +++++++++++++++++++------------------ 1 file changed, 84 insertions(+), 81 deletions(-) diff --git a/lisp/textmodes/xml-lite.el b/lisp/textmodes/xml-lite.el index 2833ea88356..4ce5ecdb1d2 100644 --- a/lisp/textmodes/xml-lite.el +++ b/lisp/textmodes/xml-lite.el @@ -95,17 +95,13 @@ Set this to nil if you don't want a modeline indicator for xml-lite-mode." (bolp))) (defun xml-lite-in-string-p (&optional limit) - "Determine whether point is inside a string. - + "Determine whether point is inside a string. If it is, return the +position of the character starting the string, else return nil. + Parse begins from LIMIT, which defaults to the preceding occurence of a tag at the beginning of a line." - (let (syntax-info) - (or limit - (setq limit (or (save-excursion - (re-search-backward "^[ \t]*<" nil t)) - (point-min)))) - (setq syntax-info (parse-partial-sexp limit (point))) - (if (nth 3 syntax-info) (nth 8 syntax-info)))) + (let ((context (sgml-lexical-context limit))) + (if (eq (car context) 'string) (cdr context)))) ;; Parsing @@ -129,78 +125,76 @@ at the beginning of a line." "Get information about the parent tag." (let ((limit (point)) tag-type tag-start tag-end name name-end) + (with-syntax-table sgml-tag-syntax-table + (cond - (cond - - ((null (re-search-backward "[<>]" nil t))) + ((null (re-search-backward "[<>]" nil t))) - ((= ?> (char-after)) ;--- found tag-end --- - (setq tag-end (1+ (point))) - (goto-char tag-end) - (cond - ((xml-lite-looking-back-at "--") ; comment - (setq tag-type 'comment - tag-start (search-backward "" nil t))) - ((xml-lite-looking-at "![CDATA[") ; cdata - (setq tag-type 'cdata - tag-end (search-forward "]]>" nil t))) - (t - (goto-char tag-start) - (setq tag-end - (ignore-errors (forward-sexp) (point)))))) - - ) + ((= ?< (char-after)) ;--- found tag-start --- + ;; !!! This should not happen because the caller should be careful + ;; that we do not start from within a tag !!! + (setq tag-start (point)) + (goto-char (1+ tag-start)) + (cond + ((xml-lite-looking-at "!--") ; comment + (setq tag-type 'comment + tag-end (search-forward "-->" nil t))) + ((xml-lite-looking-at "![CDATA[") ; cdata + (setq tag-type 'cdata + tag-end (search-forward "]]>" nil t))) + (t + (goto-char tag-start) + (setq tag-end (ignore-errors (forward-sexp) (point))))))) - (cond + (cond - ((or tag-type (null tag-start))) + ((or tag-type (null tag-start))) - ((= ?! (char-after (1+ tag-start))) ; declaration - (setq tag-type 'decl)) + ((= ?! (char-after (1+ tag-start))) ; declaration + (setq tag-type 'decl)) - ((= ?? (char-after (1+ tag-start))) ; processing-instruction - (setq tag-type 'pi)) + ((= ?? (char-after (1+ tag-start))) ; processing-instruction + (setq tag-type 'pi)) - ((= ?/ (char-after (1+ tag-start))) ; close-tag - (goto-char (+ 2 tag-start)) - (setq tag-type 'close - name (xml-lite-parse-tag-name) - name-end (point))) + ((= ?/ (char-after (1+ tag-start))) ; close-tag + (goto-char (+ 2 tag-start)) + (setq tag-type 'close + name (xml-lite-parse-tag-name) + name-end (point))) - ((member ; JSP tags etc - (char-after (1+ tag-start)) - '(?% ?#)) - (setq tag-type 'unknown)) + ((member ; JSP tags etc + (char-after (1+ tag-start)) + '(?% ?#)) + (setq tag-type 'unknown)) - (t - (goto-char (1+ tag-start)) - (setq tag-type 'open - name (xml-lite-parse-tag-name) - name-end (point)) - ;; check whether it's an empty tag - (if (or (and tag-end (eq ?/ (char-before (- tag-end 1)))) - (and (not sgml-xml-mode) - (member-ignore-case name sgml-empty-tags))) - (setq tag-type 'empty)))) - - (cond - (tag-start - (goto-char tag-start) - (xml-lite-make-tag tag-type tag-start tag-end name name-end))))) + (t + (goto-char (1+ tag-start)) + (setq tag-type 'open + name (xml-lite-parse-tag-name) + name-end (point)) + ;; check whether it's an empty tag + (if (or (and tag-end (eq ?/ (char-before (- tag-end 1)))) + (and (not sgml-xml-mode) + (member-ignore-case name sgml-empty-tags))) + (setq tag-type 'empty)))) + + (cond + (tag-start + (goto-char tag-start) + (xml-lite-make-tag tag-type tag-start tag-end name name-end)))))) (defsubst xml-lite-inside-tag-p (tag-info &optional point) "Return true if TAG-INFO contains the POINT." @@ -217,16 +211,17 @@ parse until we find a start-tag as the first thing on a line. The context is a list of tag-info structures. The last one is the tag immediately enclosing the current position." (let ((here (point)) - (ignore-depth 0) + (ignore nil) tag-info context) ;; CONTEXT keeps track of the tag-stack - ;; IGNORE-DEPTH keeps track of the nesting level of point relative to the - ;; first (outermost) tag on the context. This is the number of + ;; IGNORE keeps track of the nesting level of point relative to the + ;; first (outermost) tag on the context. This is the list of ;; enclosing start-tags we'll have to ignore. (save-excursion (while (and (or (not context) + ignore full (not (xml-lite-at-indentation-p))) (setq tag-info (xml-lite-parse-tag-backward))) @@ -246,14 +241,22 @@ immediately enclosing the current position." ;; start-tag ((eq (xml-lite-tag-type tag-info) 'open) - (setq ignore-depth (1- ignore-depth)) - (when (= ignore-depth -1) - (push tag-info context) - (setq ignore-depth 0))) - - ;; end-tag + (cond + ((null ignore) (push tag-info context)) + ((eq t (compare-strings (xml-lite-tag-name tag-info) nil nil + (car ignore) nil nil t)) + (setq ignore (cdr ignore))) + (t + ;; The open and close tags don't match. + (if (not sgml-xml-mode) + ;; Assume the open tag is simply not closed. + (message "Unclosed tag <%s>" (xml-lite-tag-name tag-info)) + (message "Unmatched tags <%s> and " + (xml-lite-tag-name tag-info) (pop ignore)))))) + + ;; end-tag ((eq (xml-lite-tag-type tag-info) 'close) - (setq ignore-depth (1+ ignore-depth))) + (push (xml-lite-tag-name tag-info) ignore)) ))) -- 2.39.2