scansion: scansion/error.lua@fb915f3a9c89 (annotated)

scansion/error.lua@fb915f3a9c89 (annotated)

scansion/error.lua

Mon, 10 Sep 2018 09:52:08 +0100

author: Matthew Wild <mwild1@gmail.com>
date: Mon, 10 Sep 2018 09:52:08 +0100
changeset 104: fb915f3a9c89
parent 64: f0a1f82b8e04
child 111: 25530dccf696
permissions: -rw-r--r--

scansion.error: Add __name and is() for identifying scansion errors

 local error_mt = {
 	__tostring = function (e)
 		return tostring(e.message or ("<Scansion error: "..tostring(self)..">"));
 	end;
 	__name = "scansion error";
 };
 return {
 	new_error = function (message, data)
 		return setmetatable({ message = message, data = data }, error_mt);
 	end;
 	is = function (err)
 		return getmetatable(err) == error_mt;
 	end;
 };