factory.h:9:  Single-parameter constructors should be marked explicit.  [runtime/explicit] [5]
factory.h:30:  Add #include <string> for string  [build/include_what_you_use] [4]
factory.h:33:  Could not find a newline character at the end of the file.  [whitespace/ending_newline] [5]
Done processing factory.h
Total errors found: 3