zf

zenflows testing
git clone https://s.sonu.ch/~srfsh/zf.git
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line_segment.ex (975B)

      1 defmodule Postgrex.Extensions.LineSegment do
      2   @moduledoc false
      3   import Postgrex.BinaryUtils, warn: false
      4   use Postgrex.BinaryExtension, send: "lseg_send"
      5   alias Postgrex.Extensions.Point
      6 
      7   def encode(_) do
      8     quote location: :keep, generated: true do
      9       %Postgrex.LineSegment{point1: p1, point2: p2} ->
     10         encoded_p1 = Point.encode_point(p1, Postgrex.LineSegment)
     11         encoded_p2 = Point.encode_point(p2, Postgrex.LineSegment)
     12         # 2 points -> 16 bytes each
     13         [<<32::int32()>>, encoded_p1 | encoded_p2]
     14 
     15       other ->
     16         raise DBConnection.EncodeError, Postgrex.Utils.encode_msg(other, Postgrex.Line)
     17     end
     18   end
     19 
     20   def decode(_) do
     21     quote location: :keep do
     22       # 2 points -> 16 bytes each
     23       <<32::int32(), x1::float64(), y1::float64(), x2::float64(), y2::float64()>> ->
     24         p1 = %Postgrex.Point{x: x1, y: y1}
     25         p2 = %Postgrex.Point{x: x2, y: y2}
     26         %Postgrex.LineSegment{point1: p1, point2: p2}
     27     end
     28   end
     29 end