def self.token_type_name(token_type)
case token_type
when START then "START"
when EOF then "EOF"
when COMMA then "COMMA"
when EQUALS then "EQUALS"
when COLON then "COLON"
when OPEN_CURLY then "OPEN_CURLY"
when CLOSE_CURLY then "CLOSE_CURLY"
when OPEN_SQUARE then "OPEN_SQUARE"
when CLOSE_SQUARE then "CLOSE_SQUARE"
when VALUE then "VALUE"
when NEWLINE then "NEWLINE"
when UNQUOTED_TEXT then "UNQUOTED_TEXT"
when SUBSTITUTION then "SUBSTITUTION"
when PROBLEM then "PROBLEM"
when COMMENT then "COMMENT"
when PLUS_EQUALS then "PLUS_EQUALS"
when IGNORED_WHITESPACE then "IGNORED_WHITESPACE"
else raise ConfigBugOrBrokenError, "Unrecognized token type #{token_type}"
end
end