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original commit: 68476f7d0cba9c25e2e8e4422cf4f03dfb90256c
This commit is contained in:
Robby Findler 2000-08-13 14:49:40 +00:00
parent a16ddc1dcd
commit ad2528e6ad
1 changed files with 81 additions and 87 deletions
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166
collects/framework/scheme.ss
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@ -119,7 +119,7 @@
[(= (position-line f) line)
(let ([f-1 (- f 2)]) ;; -1 to go back one, -1 to be before char
(cond
[(= f 0)
[(< f-1 0)
#t]
[(and (= (position-line f-1) line)
(not (char=? (get-character f-1) #\\ )))
@ -246,93 +246,87 @@
[mismatch-color (make-object color% "PINK")])
(opt-lambda ([just-clear? #f])
(when highlight-parens?
(dynamic-wind
(lambda ()
(set! in-highlight-parens? #t)
(begin-edit-sequence))
(lambda ()
(clear-old-locations)
(set! clear-old-locations void)
(unless just-clear?
(let* ([here (get-start-position)]
[there (get-end-position)]
[slash?
(lambda (before after)
(and (>= before 0)
(>= after 0)
(let ([text (get-text before after)])
(and (string? text)
(>= (string-length text) 1)
(char=? #\\ (string-ref text 0))))))]
[is-paren?
(lambda (f)
(lambda (char)
(ormap (lambda (x) (char=? char (string-ref (f x) 0)))
(scheme-paren:get-paren-pairs))))]
[is-left-paren? (is-paren? car)]
[is-right-paren? (is-paren? cdr)])
(when (and (= here there)
(not (in-single-line-comment? here)))
(set! in-highlight-parens? #t)
(begin-edit-sequence)
(clear-old-locations)
(set! clear-old-locations void)
(unless just-clear?
(let* ([here (get-start-position)]
[there (get-end-position)]
[slash?
(lambda (before after)
(and (>= before 0)
(>= after 0)
(let ([text (get-text before after)])
(and (string? text)
(>= (string-length text) 1)
(char=? #\\ (string-ref text 0))))))]
[is-paren?
(lambda (f)
(lambda (char)
(ormap (lambda (x) (char=? char (string-ref (f x) 0)))
(scheme-paren:get-paren-pairs))))]
[is-left-paren? (is-paren? car)]
[is-right-paren? (is-paren? cdr)])
(when (and (= here there)
(not (in-single-line-comment? here)))
(let/ec k
;; before, after : (list number number boolean)
;; numbers indicate the range to highlight
;; boolean indicates if it is an errorneous highlight
(let ([before
(cond
[(and (> here 0)
(is-right-paren? (get-character (sub1 here))))
(cond
[(slash? (- here 2) (- here 1)) #f]
[(scheme-paren:backward-match
this here (get-limit here)
backward-cache)
=>
(lambda (end-pos)
(list end-pos here #f))]
[else (list (- here 1) here #t)])]
[else #f])]
[after
(cond
[(is-left-paren? (get-character here))
(cond
[(slash? (- here 1) here) #f]
[(scheme-paren:forward-match
this here (last-position)
forward-cache)
=>
(lambda (end-pos)
(list here end-pos #f))]
[else (list here (+ here 1) #t)])]
[else #f])]
[handle-single
(lambda (single)
(let* ([left (mzlib:function:first single)]
[right (mzlib:function:second single)]
[error? (mzlib:function:third single)]
[off (highlight-range
left
right
(if error? mismatch-color match-color)
(icon:get-paren-highlight-bitmap)
(= there here left))])
(set! clear-old-locations
(let ([old clear-old-locations])
(lambda ()
(old)
(off))))))])
;; before, after : (list number number boolean)
;; numbers indicate the range to highlight
;; boolean indicates if it is an errorneous highlight
(let ([before
(cond
[(and (> here 0)
(is-right-paren? (get-character (sub1 here))))
(cond
[(slash? (- here 2) (- here 1)) #f]
[(scheme-paren:backward-match
this here (get-limit here)
backward-cache)
=>
(lambda (end-pos)
(list end-pos here #f))]
[else (list (- here 1) here #t)])]
[else #f])]
[after
(cond
[(is-left-paren? (get-character here))
(cond
[(slash? (- here 1) here) #f]
[(scheme-paren:forward-match
this here (last-position)
forward-cache)
=>
(lambda (end-pos)
(list here end-pos #f))]
[else (list here (+ here 1) #t)])]
[else #f])]
[handle-single
(lambda (single)
(let* ([left (mzlib:function:first single)]
[right (mzlib:function:second single)]
[error? (mzlib:function:third single)]
[off (highlight-range
left
right
(if error? mismatch-color match-color)
(icon:get-paren-highlight-bitmap)
(= there here left))])
(set! clear-old-locations
(let ([old clear-old-locations])
(lambda ()
(old)
(off))))))])
(cond
[(and after before)
(handle-single after)
(handle-single before)]
[after (handle-single after)]
[before (handle-single before)]
[else (void)])))))))
(lambda ()
(end-edit-sequence)
(set! in-highlight-parens? #f))))))]
(cond
[(and after before)
(handle-single after)
(handle-single before)]
[after (handle-single after)]
[before (handle-single before)]
[else (void)])))))
(end-edit-sequence)
(set! in-highlight-parens? #f))))]
[get-limit (lambda (pos) 0)]