class RuboCop::Cop::Badge

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

def self.camel_case(name_part) 

def self.camel_case(name_part)
  return 'RSpec' if name_part == 'rspec'
  return name_part unless name_part.match?(/^[a-z]|_[a-z]/)
  name_part.gsub(/^[a-z]|_[a-z]/) { |match| match[-1, 1].upcase }
end

def self.for(class_name) 

def self.for(class_name)
  parts = class_name.split('::')
  name_deep_enough = parts.length >= 4
  new(name_deep_enough ? parts[2..] : parts.last(2))
end

def self.parse(identifier) 

def self.parse(identifier)
  @parse_cache[identifier] ||= new(identifier.split('/').map! { |i| camel_case(i) })
end

def ==(other) 

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

def hash 

def hash
  # Do hashing manually to reduce Array allocations.
  department.hash ^ cop_name.hash # rubocop:disable Security/CompoundHash
end

def initialize(class_name_parts) 

def initialize(class_name_parts)
  department_parts = class_name_parts[0...-1]
  @department = (department_parts.join('/').to_sym unless department_parts.empty?)
  @department_name = @department&.to_s
  @cop_name = class_name_parts.last
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
  @to_s ||= qualified? ? "#{department}/#{cop_name}" : cop_name
end

def with_department(department) 

def with_department(department)
  self.class.new([department.to_s.split('/'), cop_name].flatten)
end