small refactor

inspect.lua

@@ -27,7 +27,7 @@ local function unescape(str)
 end
 
 local function isIdentifier(str)
-  return string.match( str, "^[_%a][_%a%d]*$" )
+  return type(str) == 'string' and str:match( "^[_%a][_%a%d]*$" )
 end
 
 local function isArrayKey(k, length)
@@ -98,14 +98,6 @@ function Inspector:new(v, depth)
   return inspector:putValue(v)
 end
 
-function Inspector:puts(...)
-  local args = {...}
-  for i=1, #args do
-    table.insert(self.buffer, tostring(args[i]))
-  end
-  return self
-end
-
 function Inspector:tabify()
   self:puts("\n", string.rep("  ", self.level))
   return self
@@ -119,6 +111,14 @@ function Inspector:down()
   self.level = self.level + 1
 end
 
+function Inspector:puts(...)
+  local args = {...}
+  for i=1, #args do
+    table.insert(self.buffer, tostring(args[i]))
+  end
+  return self
+end
+
 function Inspector:putComma(comma)
   if comma then self:puts(',') end
   return true
@@ -202,10 +202,9 @@ function Inspector:putValue(v)
   return self
 end
 
+
 function Inspector:putKey(k)
-  if type(k) == "string" and isIdentifier(k) then
-    return self:puts(k)
-  end
+  if isIdentifier(k) then return self:puts(k) end
   return self:puts( "[" ):putValue(k):puts("]")
 end