1 files changed, 38 insertions, 0 deletions
diff --git a/src/ext.lua b/src/ext.lua
new file mode 100644
index 0000000..1c05b9f
--- /dev/null
+++ b/src/ext.lua
@@ -0,0 +1,38 @@
+--[[
+Extensions that don't belong anywhere else
+]]
+
+-- Override tostring to display more info about the table
+local old_tostring = tostring
+local numtabs = 0
+local printed_tables = {}
+function tostring(el)
+	if type(el) == "table" and printed_tables[el] == nil then
+		printed_tables[el] = true
+		numtabs = numtabs + 1
+		local strbuilder = {"{"}
+		for k,v in pairs(el) do
+			strbuilder[#strbuilder + 1] = string.format("%s%s : %s", string.rep("\t",numtabs), tostring(k), tostring(v))
+		end
+		printed_tables[el] = nil
+		strbuilder[#strbuilder + 1] = string.rep("\t",numtabs - 1) .. "}"
+		numtabs = numtabs - 1
+		return table.concat(strbuilder,"\n")
+	end
+	return old_tostring(el)
+end
+
+--functions to save my hand
+function assertf(bool,msg,...)
+	if not bool then
+		error(string.format(msg,...),2)
+	end
+end
+
+function errorf(fmt,...)
+	error(string.format(fmt,...),2)
+end
+
+function printf(fmt,...)
+	print(string.format(fmt,...))
+end