gistfile1.ex

iex(6)> defmodule Test do
...(6)>   defmacrop foo() do
...(6)>     quote location: [line: 54], do: __ENV__.line
...(6)>   end
...(6)>   def test, do: foo
...(6)> end 
iex:6: redefining module Test
{:module,Test,<<70,79,82,49,0,0,5,52,66,69,65,77,65,116,111,109,0,0,0,146,0,0,0,16,11,69,108,105,120,105,114,45,84,101,115,116,8,95,95,105,110,102,111,95,95,4,100,111,99,115,...>>,{:test,0}}
iex(7)> Test.test
10
iex(8)> __ENV__.line
8