ardupilot/libraries/AP_Scripting/examples/test_load.lua

35 lines
931 B
Lua

--[[
test the load function for loading new code from strings
--]]
gcs:send_text(0,"Testing load() method")
-- a function written as a string. This could come from a file
-- or any other source (eg. mavlink)
-- Note that the [[ xxx ]] syntax is just a multi-line string
local func_str = [[
function TestFunc(x,y)
return math.sin(x) + math.cos(y)
end
]]
function test_load()
-- load the code into the global environment
local f,errloc,err = load(func_str,"TestFunc", "t", _ENV)
if not f then
gcs:send_text(0,string.format("Error %s: %s", errloc, err))
return
end
-- run the code within a protected call to catch any errors
local success, err = pcall(f)
if not success then
gcs:send_text(0, string.format("Failed to load TestFunc: %s", err))
return
end
-- we now have the new function
gcs:send_text(0, string.format("TestFunc(3,4) -> %f", TestFunc(3,4)))
end
test_load()