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pcall in the callback tracker

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This commit is contained in:
Björn Ritzl 2019-03-08 09:03:29 +01:00
parent 7e2ff2990c
commit 7d986ada1b
1 changed files with 9 additions and 6 deletions
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15
monarch/utils/callback_tracker.lua
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@ -7,15 +7,20 @@ function M.create()
local callback = nil local callback = nil
local callback_count = 0 local callback_count = 0
local function invoke_if_done()
if callback_count == 0 and callback then
local ok, err = pcall(callback)
if not ok then print(err) end
end
end
--- Create a callback function and track when it is done --- Create a callback function and track when it is done
-- @return Callback function -- @return Callback function
function instance.track() function instance.track()
callback_count = callback_count + 1 callback_count = callback_count + 1
return function() return function()
callback_count = callback_count - 1 callback_count = callback_count - 1
if callback_count == 0 and callback then invoke_if_done()
callback()
end
end end
end end
@ -23,9 +28,7 @@ function M.create()
-- @param cb Function to call when all -- @param cb Function to call when all
function instance.when_done(cb) function instance.when_done(cb)
callback = cb callback = cb
if callback_count == 0 then invoke_if_done()
callback()
end
end end
return instance return instance