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* mirrors-inside-fields works! hope I didn't break a million other

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things...
This commit is contained in:
capitaomorte 2009-11-14 01:09:36 +00:00
parent 9d3d2e102c
commit 2e16b2a732
1 changed files with 66 additions and 20 deletions
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86
yasnippet.el
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@ -2444,6 +2444,7 @@ Otherwise throw exception."
"A mirror."
start end
(transform nil)
parent-field
next)
(defstruct (yas/exit (:constructor yas/make-exit (marker)))
@ -3178,7 +3179,7 @@ has to be called before the $-constructs are deleted."
(t
(setf (yas/exit-next fom) nextfom))))
(yas/compare-fom-begs (fom1 fom2)
(> (yas/fom-start fom2) (yas/fom-start fom1)))
(>= (yas/fom-start fom2) (yas/fom-start fom1)))
(yas/link-foms (fom1 fom2)
(yas/fom-set-next-fom fom1 fom2)))
;; make some yas/field, yas/mirror and yas/exit soup
@ -3195,6 +3196,23 @@ has to be called before the $-constructs are deleted."
(when soup
(reduce #'yas/link-foms soup)))))
(defun yas/calculate-mirror-parent-fields (snippet mirror)
"Attempt to assign a parent field of SNIPPET to the mirror MIRROR.
Use the tighest containing field if more than one field contains
the mirror. Intended to be called *before* the dollar-regions are
deleted."
(let ((min (point-min))
(max (point-max)))
(dolist (field (yas/snippet-fields snippet))
(when (and (<= (yas/field-start field) (yas/mirror-start mirror))
(<= (yas/mirror-end mirror) (yas/field-end field))
(< min (yas/field-start field))
(< (yas/field-end field) max))
(setq min (yas/field-start field)
max (yas/field-end field))
(setf (yas/mirror-parent-field mirror) field)))))
(defun yas/advance-end-maybe (fom newend)
"Maybe advance FOM's end to NEWEND if it needs it.
@ -3219,6 +3237,12 @@ If it does, also call `yas/advance-end-maybe' on FOM."
(set-marker (yas/fom-start fom) newstart)
(yas/advance-end-maybe fom newstart)))
(defun yas/advance-end-of-parents-maybe (field newend)
(when (and field
(< (yas/field-end field) newend))
(set-marker (yas/field-end field) newend)
(yas/advance-end-of-parents-maybe (yas/field-parent-field field) newend)))
(defvar yas/dollar-regions nil
"When expanding the snippet the \"parse-create\" functions add
cons cells to this var")
@ -3468,13 +3492,21 @@ When multiple expressions are found, only the last one counts."
(save-excursion
(while (re-search-forward yas/multi-dollar-lisp-expression-regexp nil t)
(let* ((real-match-end-1 (yas/scan-sexps (match-beginning 1) 1)))
;; commit the primary field transformation if we don't find
;; it in yas/dollar-regions (a subnested field) might have
;; already caught it.
;; commit the primary field transformation if:
;;
;; 1. we don't find it in yas/dollar-regions (a subnested
;; field) might have already caught it.
;;
;; 2. we really make sure we have either two '$' or some
;; text and a '$' after the colon ':'. This is a FIXME: work
;; my regular expressions and end these ugly hacks.
;;
(when (and real-match-end-1
(not (member (cons (match-beginning 0)
real-match-end-1)
yas/dollar-regions)))
yas/dollar-regions))
(not (eq ?:
(char-before (1- (match-beginning 1))))))
(let ((lisp-expression-string (buffer-substring-no-properties (match-beginning 1)
real-match-end-1)))
(setf (yas/field-transform parent-field)
@ -3489,15 +3521,20 @@ When multiple expressions are found, only the last one counts."
(number (string-to-number (match-string-no-properties 1)))
(field (and number
(not (zerop number))
(yas/snippet-find-field snippet number))))
(when (and real-match-end-0
field)
(push (yas/make-mirror (yas/make-marker (match-beginning 0))
(yas/make-marker (match-beginning 0))
(yas/read-lisp (yas/restore-escapes
(buffer-substring-no-properties (match-beginning 2)
(1- real-match-end-0)))))
(yas/snippet-find-field snippet number)))
(brand-new-mirror
(and real-match-end-0
field
(yas/make-mirror (yas/make-marker (match-beginning 0))
(yas/make-marker (match-beginning 0))
(yas/read-lisp
(yas/restore-escapes
(buffer-substring-no-properties (match-beginning 2)
(1- real-match-end-0))))))))
(when brand-new-mirror
(push brand-new-mirror
(yas/field-mirrors field))
(yas/calculate-mirror-parent-fields snippet brand-new-mirror)
(push (cons (match-beginning 0) real-match-end-0) yas/dollar-regions)))))
(defun yas/simple-mirror-parse-create (snippet)
@ -3523,10 +3560,13 @@ When multiple expressions are found, only the last one counts."
(t
(let ((field (yas/snippet-find-field snippet number)))
(if field
(push (yas/make-mirror (yas/make-marker (match-beginning 0))
(yas/make-marker (match-beginning 0))
nil)
(yas/field-mirrors field))
(let ((brand-new-mirror (yas/make-mirror
(yas/make-marker (match-beginning 0))
(yas/make-marker (match-beginning 0))
nil)))
(push brand-new-mirror
(yas/field-mirrors field))
(yas/calculate-mirror-parent-fields snippet brand-new-mirror))
(push (yas/make-field number
(yas/make-marker (match-beginning 0))
(yas/make-marker (match-beginning 0))
@ -3563,8 +3603,12 @@ When multiple expressions are found, only the last one counts."
(defun yas/mirror-update-display (mirror field)
"Update MIRROR according to FIELD (and mirror transform)."
(let ((reflection (or (yas/apply-transform mirror field)
(yas/field-text-for-display field))))
(let* ((mirror-parent-field (yas/mirror-parent-field mirror))
(reflection (and (not (and mirror-parent-field
(yas/field-modified-p mirror-parent-field)))
(or (yas/apply-transform mirror field)
(yas/field-text-for-display field)))))
(when (and reflection
(not (string= reflection (buffer-substring-no-properties (yas/mirror-start mirror)
(yas/mirror-end mirror)))))
@ -3573,7 +3617,9 @@ When multiple expressions are found, only the last one counts."
(if (> (yas/mirror-end mirror) (point))
(delete-region (point) (yas/mirror-end mirror))
(set-marker (yas/mirror-end mirror) (point))
(yas/advance-start-maybe (yas/mirror-next mirror) (point))))))
(yas/advance-start-maybe (yas/mirror-next mirror) (point))
;; super-special advance
(yas/advance-end-of-parents-maybe mirror-parent-field (point))))))
(defun yas/field-update-display (field snippet)
"Much like `yas/mirror-update-display', but for fields"