FFI port of a0905d3 for #452.

sparklemotion · May 19, 2011 · d76926a · d76926a
1 parent b74e896
commit d76926a
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/lib/nokogiri/ffi/xslt/stylesheet.rb b/lib/nokogiri/ffi/xslt/stylesheet.rb
@@ -51,6 +51,10 @@ def serialize(document) # :nodoc:
       end
 
       def transform(document, params=[]) # :nodoc:
+        unless document.kind_of? Nokogiri::XML::Document
+          raise ArgumentError, "argument must be a Nokogiri::XML::Document"
+        end
+
         params = params.to_a.flatten if params.is_a?(Hash)
         raise(TypeError) unless params.is_a?(Array)