func init
	// adds using namespace
	sys.add_use('System')

	// gets type of an array
	if(isdef("ElementType"))
		this.type = 'Object'
	else
		this.type = code(this.props("ElementType").value.props("TypeName").value)
		if(this.type == 'Object undefined')
			error(this.name + ' - property ' + this.props("ElementType").name + ' does not defined')
			this.type = 'Object'
		end
	end
	if(not isdef("KeysType"))
		this.keys = code(this.props("KeysType").value.props("TypeName").value)
		if(this.keys == 'Object undefined')
			error(this.name + ' - property ' + this.props("KeysType").name + ' does not defined')
		end
	end
	if(not isdef("ItemsType"))
		this.items = code(this.props("ItemsType").value.props("TypeName").value)
		if(this.items == 'Object undefined')
			error(this.name + ' - property ' + this.props("ItemsType").name + ' does not defined')
		end
	end
end

func doSort(array)
	blk.println('Array.Sort', isdef("ElementType") ? '' : '<' + this.type + '>', '(', d("Array"), ');')
end

func doSort2(keys, items)
	blk.println('Array.Sort', this.make_cast(), '(', d("Keys"), ', ', d("Items"), ');')
end

func doSort3(array, comparer)
	blk.println('Array.Sort', isdef("ElementType") ? '' : '<' + this.type + '>', '(', d("Array"), ', ', d("Comparer"), ');')
end

func doSort4(keys, items, comparer)
	blk.println('Array.Sort', this.make_cast(), '(', d("Keys"), ', ', d("Items"), ', ', d("Comparer"), ');')
end

func doSort5(array, index, length)
	blk.println('Array.Sort', isdef("ElementType") ? '' : '<' + this.type + '>', '(', d("Array"), ', ', d("Index"), ', ', d("Length"), ');')
end

func doSort6(keys, items, index, length)
	blk.println('Array.Sort', this.make_cast(), '(', d("Keys"), ', ', d("Items"), ', ', d("Index"), ', ', d("Length"), ');')
end

func doSort7(array, index, length, comparer)
	blk.println('Array.Sort', isdef("ElementType") ? '' : '<' + this.type + '>', '(', d("Array"), ', ', d("Index"), ', ', d("Length"), ', ', d("Comparer"), ');')
end

func doSort8(keys, items, index, length, comparer)
	blk.println('Array.Sort', this.make_cast(), '(', d("Keys"), ', ', d("Items"), ', ', d("Index"), ', ', d("Length"), ', ', d("Comparer"), ');')
end

func make_cast()
	if(isdef("KeysType") or isdef("ItemsType"))
		cast = ''
	else
		cast = '<' + this.keys + ',' + this.items + '>'
	end
	return(cast)
end