-- Nodes will only be processed if one of these keys is present

node_keys = { "amenity", "shop" }

-- Initialize Lua logic

function init_function()
end

-- Finalize Lua logic()
function exit_function()
end

-- Assign nodes to a layer, and set attributes, based on OSM tags

function node_function(node)
--  local amenity = node:Find("amenity")
--  local shop = node:Find("shop")
--  if amenity~="" or shop~="" then
--      node:Layer("pois", false)
--      if amenity~="" then node:Attribute("type",amenity)
--      else node:Attribute("type",shop) end
--      node:Attribute("name", node:Find("name"))
--  end
end

-- Similarly for ways

function way_function(way)
    local area_highway = way:Find("area:highway")
    if area_highway~="" then
        way:Layer("area_highway", true)
        way:Attribute("surface", way:Find("surface"))
        way:Attribute("type",area_highway)
--      way:Attribute("id",way:Id())
--      way:AttributeNumeric("area",37)
    end
end