88 lines
2.2 KiB
Standard ML
88 lines
2.2 KiB
Standard ML
structure NormalYank =
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struct
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open AppType
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open DrawMsg
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open MailboxType
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fun yankLine (app: app_type, count) =
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let
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open DrawMsg
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open MailboxType
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val {buffer, cursorIdx, ...} = app
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val buffer = LineGap.goToIdx (cursorIdx, buffer)
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val low = Cursor.vi0 (buffer, cursorIdx)
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val buffer = LineGap.goToIdx (low, buffer)
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val high = Cursor.viDlrForDelete (buffer, low, count)
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val buffer = LineGap.goToIdx (high, buffer)
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val length = high - low
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val str = LineGap.substring (low, length, buffer)
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val msg = YANK str
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val mode = NORMAL_MODE ""
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in
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NormalModeWith.modeAndBuffer (app, buffer, mode, [DRAW msg])
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end
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fun yankToStartOfLine (app: app_type) =
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let
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open DrawMsg
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open MailboxType
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val {buffer, cursorIdx, ...} = app
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val buffer = LineGap.goToIdx (cursorIdx, buffer)
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val low = Cursor.vi0 (buffer, cursorIdx)
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val length = cursorIdx - low
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val str = LineGap.substring (low, length, buffer)
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val msg = YANK str
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val mode = NORMAL_MODE ""
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in
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NormalModeWith.modeAndBuffer (app, buffer, mode, [DRAW msg])
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end
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fun yankWhenMovingBack (app: app_type, fMove, count) =
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let
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open DrawMsg
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open MailboxType
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val {buffer, cursorIdx, ...} = app
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val buffer = LineGap.goToIdx (cursorIdx, buffer)
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val low = fMove (buffer, cursorIdx, count)
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val length = cursorIdx - low
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val str = LineGap.substring (low, length, buffer)
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val msg = YANK str
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val mode = NORMAL_MODE ""
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in
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NormalModeWith.modeAndBuffer (app, buffer, mode, [DRAW msg])
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end
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fun yankWhenMovingForward (app: app_type, fMove, count) =
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let
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open DrawMsg
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open MailboxType
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val {buffer, cursorIdx, ...} = app
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val buffer = LineGap.goToIdx (cursorIdx, buffer)
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val high = fMove (buffer, cursorIdx, count)
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val buffer = LineGap.goToIdx (high, buffer)
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val length = high - cursorIdx
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val str = LineGap.substring (cursorIdx, length, buffer)
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val msg = YANK str
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val mode = NORMAL_MODE ""
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in
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NormalModeWith.modeAndBuffer (app, buffer, mode, [DRAW msg])
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end
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end
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