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3c5a79710a
When passing arrays between child processes with node's IPC machanism, `instance of Array` will return false for the deserialized array, we should use the reiable way of detecting Array provided by underscore. Read this for more: http://perfectionkills.com/instanceof-considered-harmful-or-how-to-write-a-robust-isarray/ This bug was found when moving spell-check to use ProcessTask, and the wrong Range object was returned for the passed misspelling value.
92 lines
2.4 KiB
CoffeeScript
92 lines
2.4 KiB
CoffeeScript
Point = require 'point'
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_ = require 'underscore'
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module.exports =
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class Range
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@fromObject: (object) ->
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if _.isArray(object)
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new Range(object...)
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else if object instanceof Range
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object
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else
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new Range(object.start, object.end)
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@fromPointWithDelta: (point, rowDelta, columnDelta) ->
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pointA = Point.fromObject(point)
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pointB = new Point(point.row + rowDelta, point.column + columnDelta)
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new Range(pointA, pointB)
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constructor: (pointA = new Point(0, 0), pointB = new Point(0, 0)) ->
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pointA = Point.fromObject(pointA)
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pointB = Point.fromObject(pointB)
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if pointA.compare(pointB) <= 0
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@start = pointA
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@end = pointB
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else
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@start = pointB
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@end = pointA
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copy: ->
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new Range(@start.copy(), @end.copy())
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isEqual: (other) ->
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if _.isArray(other) and other.length == 2
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other = new Range(other...)
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other.start.isEqual(@start) and other.end.isEqual(@end)
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isSingleLine: ->
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@start.row == @end.row
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coversSameRows: (other) ->
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@start.row == other.start.row && @end.row == other.end.row
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inspect: ->
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"[#{@start.inspect()} - #{@end.inspect()}]"
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add: (point) ->
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new Range(@start.add(point), @end.add(point))
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translate: (startPoint, endPoint=startPoint) ->
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new Range(@start.translate(startPoint), @end.translate(endPoint))
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intersectsWith: (otherRange) ->
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if @start.isLessThanOrEqual(otherRange.start)
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@end.isGreaterThanOrEqual(otherRange.start)
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else
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otherRange.intersectsWith(this)
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containsRange: (otherRange, {exclusive} = {}) ->
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{ start, end } = Range.fromObject(otherRange)
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@containsPoint(start, {exclusive}) and @containsPoint(end, {exclusive})
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containsPoint: (point, {exclusive} = {}) ->
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point = Point.fromObject(point)
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if exclusive
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point.isGreaterThan(@start) and point.isLessThan(@end)
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else
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point.isGreaterThanOrEqual(@start) and point.isLessThanOrEqual(@end)
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containsRow: (row) ->
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@start.row <= row <= @end.row
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union: (otherRange) ->
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start = if @start.isLessThan(otherRange.start) then @start else otherRange.start
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end = if @end.isGreaterThan(otherRange.end) then @end else otherRange.end
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new Range(start, end)
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isEmpty: ->
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@start.isEqual(@end)
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toDelta: ->
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rows = @end.row - @start.row
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if rows == 0
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columns = @end.column - @start.column
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else
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columns = @end.column
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new Point(rows, columns)
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getRowCount: ->
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@end.row - @start.row + 1
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