Tiny try-catch-finally implementation for Lua

Lua does not have a common syntax sugar to wrap the code that will possibly lead to errors. This package provides a very simple way to bring this sugar to Lua.

Installation

Via LuaRocks:

luarocks install catchify

Or just download and require init.lua file from this repo.

Usage

The whole concept can be illustrated in a single code piece below:

local try = require "catchify"
try(function ()
	error "Something's wrong!"
end):catch(function (e) -- e will contain error message
	print(e) -- > stdin:3: Something's wrong!
end):finally(function () -- Will be executed anyway
	print "Finally here!"
end)

You can pass a table containing single function instead of a function to make syntax more "curly":

try {
	function ()
		error "Something's wrong!"
	end
} :catch {
	function (e)
		print(e)
	end
} :finally {
	function ()
		print "Finally here!"
	end
}

Testing

Install luaunit package:

luarocks install luaunit

Then run from the console:

lua test.lua