Added argument type-checking to json.decode()

rxi · Sep 6, 2015 · bf3ebf6 · bf3ebf6
1 parent 89b0e90
commit bf3ebf6
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/json.lua b/json.lua
@@ -370,6 +370,9 @@ end
 
 
 function json.decode(str)
+  if type(str) ~= "string" then
+    error("expected argument of type string, got " .. type(str))
+  end
   return ( parse(str, next_char(str, 1, space_chars, true)) )
 end