class RuboCop::Cop::Badge

for RuboCop to infer.
for badge references in source files that omit the department
parsed as either ‘Department/CopName` or just `CopName` to allow
for `RuboCop::Cop::Layout::Tab` is `Layout/Tab`. Badges can be
All cops are identified by their badge. For example, the badge
Identifier of all cops containing a department and cop name.

def self.for(class_name) 

def self.for(class_name)
  new(*class_name.split('::').last(2))
end

def self.parse(identifier) 

def self.parse(identifier)
  parts = identifier.split('/', 2)
  raise InvalidBadge, identifier if parts.size > 2
  if parts.one?
    new(nil, *parts)
  else
    new(*parts)
  end
end

def ==(other) 

def ==(other)
  hash == other.hash
end

def hash 

def hash
  [department, cop_name].hash
end

def initialize(department, cop_name) 

def initialize(department, cop_name)
  @department = department.to_sym if department
  @cop_name   = cop_name
end

def match?(other) 

def match?(other)
  cop_name == other.cop_name &&
    (!qualified? || department == other.department)
end

def qualified? 

def qualified?
  !department.nil?
end

def to_s 

def to_s
  qualified? ? "#{department}/#{cop_name}" : cop_name
end

def with_department(department) 

def with_department(department)
  self.class.new(department, cop_name)
end