factory.h:5:  Line ends in whitespace.  Consider deleting these extra spaces.  [whitespace/end_of_line] [4]
factory.h:9:  You don't need a ; after a }  [readability/braces] [4]
factory.h:16:  Single-parameter constructors should be marked explicit.  [runtime/explicit] [5]
factory.h:51:  An else should appear on the same line as the preceding }  [whitespace/newline] [4]
factory.h:51:  If an else has a brace on one side, it should have it on both  [readability/braces] [5]
factory.h:61:  Could not find a newline character at the end of the file.  [whitespace/ending_newline] [5]
Done processing factory.h
Total errors found: 6