Function: tcl-indent-exp

tcl-indent-exp is an interactive and byte-compiled function defined in tcl.el.gz.

Signature

(tcl-indent-exp)

Documentation

Indent each line of the Tcl grouping following point.

Key Bindings

Aliases

indent-tcl-exp (obsolete since 28.1)

Source Code

;; Defined in /usr/src/emacs/lisp/progmodes/tcl.el.gz
(defun tcl-indent-exp ()
  "Indent each line of the Tcl grouping following point."
  (interactive)
  (let ((indent-stack (list nil))
	(contain-stack (list (point)))
	(case-fold-search nil)
	outer-loop-done inner-loop-done state ostate
	this-indent continued-line
	(next-depth 0)
	last-depth)
    (save-excursion
      (forward-sexp 1))
    (save-excursion
      (setq outer-loop-done nil)
      (while (and (not (eobp)) (not outer-loop-done))
	(setq last-depth next-depth)
	;; Compute how depth changes over this line
	;; plus enough other lines to get to one that
	;; does not end inside a comment or string.
	;; Meanwhile, do appropriate indentation on comment lines.
	(setq inner-loop-done nil)
	(while (and (not inner-loop-done)
		    (not (and (eobp) (setq outer-loop-done t))))
	  (setq ostate state)
	  (setq state (parse-partial-sexp (point) (progn (end-of-line) (point))
					  nil nil state))
	  (setq next-depth (car state))
	  (if (or (nth 4 ostate))
	      (tcl-indent-line))
	  (if (or (nth 3 state))
	      (forward-line 1)
	    (setq inner-loop-done t)))
	(if (<= next-depth 0)
	    (setq outer-loop-done t))
	(if outer-loop-done
	    nil
	  ;; If this line had ..))) (((.. in it, pop out of the levels
	  ;; that ended anywhere in this line, even if the final depth
	  ;; doesn't indicate that they ended.
	  (while (> last-depth (nth 6 state))
	    (setq indent-stack (cdr indent-stack)
		  contain-stack (cdr contain-stack)
		  last-depth (1- last-depth)))
	  ;; Add levels for any parens that were started in this line.
	  (while (< last-depth next-depth)
	    (setq indent-stack (cons nil indent-stack)
		  contain-stack (cons nil contain-stack)
		  last-depth (1+ last-depth)))
	  (if (null (car contain-stack))
	      (setcar contain-stack
		      (or (car (cdr state))
			  (save-excursion
			    (forward-sexp -1)
			    (point)))))
	  (forward-line 1)
	  (setq continued-line
		(save-excursion
		  (backward-char)
		  (= (preceding-char) ?\\)))
	  (skip-chars-forward " \t")
	  (if (eolp)
	      nil
	    (if (and (car indent-stack)
		     (>= (car indent-stack) 0))
		;; Line is on an existing nesting level.
		(setq this-indent (car indent-stack))
	      ;; Just started a new nesting level.
	      ;; Compute the standard indent for this level.
	      (let ((val (tcl-calculate-indent
			  (if (car indent-stack)
			      (- (car indent-stack))))))
		(setcar indent-stack
			(setq this-indent val))
		(setq continued-line nil)))
	    (cond ((not (numberp this-indent)))
		  ((= (following-char) ?})
		   (setq this-indent (- this-indent tcl-indent-level)))
		  ((= (following-char) ?\])
		   (setq this-indent (- this-indent 1))))
	    ;; Put chosen indentation into effect.
	    (or (null this-indent)
		(= (current-column)
		   (if continued-line
		       (+ this-indent tcl-indent-level)
		     this-indent))
		(progn
		  (delete-region (point) (progn (beginning-of-line) (point)))
		  (indent-to
		   (if continued-line
		       (+ this-indent tcl-indent-level)
		     this-indent)))))))))
  )