format_visitor.h:7:  public: should be indented +1 space inside class FormatVisitor  [whitespace/indent] [3]
format_visitor.h:49:  Lines should be <= 80 characters long  [whitespace/line_length] [2]
format_visitor.h:50:  Missing space before ( in for(  [whitespace/parens] [5]
format_visitor.h:50:  Missing space before {  [whitespace/braces] [5]
format_visitor.h:64:  "private:" should be preceded by a blank line  [whitespace/blank_line] [3]
format_visitor.h:67:  Could not find a newline character at the end of the file.  [whitespace/ending_newline] [5]
Done processing format_visitor.h
Total errors found: 6