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65991c686a
Snippet placeholders are managed by adding an "anchor range" to the edit session. An anchor range basically tracks two anchors for the start and the end of the range.
74 lines
1.8 KiB
CoffeeScript
74 lines
1.8 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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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: (range) ->
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new Range(@start.copy(), @end.copy())
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isEqual: (other) ->
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if other instanceof Array 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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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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containsPoint: (point) ->
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point = Point.fromObject(point)
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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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