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# frozen_string_literal: true
module RuboCop
module Cop
# Identifier of all cops containing a department and cop name.
#
# All cops are identified by their badge. For example, the badge
# for `RuboCop::Cop::Layout::Tab` is `Layout/Tab`. Badges can be
# parsed as either `Department/CopName` or just `CopName` to allow
# for badge references in source files that omit the department
# for RuboCop to infer.
class Badge
# Error raised when a badge parse fails.
class InvalidBadge < Error
MSG = 'Invalid badge %<badge>p. ' \
'Expected `Department/CopName` or `CopName`.'.freeze
def initialize(token)
super(format(MSG, badge: token))
end
end
attr_reader :department, :cop_name
def self.for(class_name)
new(*class_name.split('::').last(2))
end
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 initialize(department, cop_name)
@department = department.to_sym if department
@cop_name = cop_name
end
def ==(other)
hash == other.hash
end
alias eql? ==
def hash
[department, cop_name].hash
end
def match?(other)
cop_name == other.cop_name &&
(!qualified? || department == other.department)
end
def to_s
qualified? ? "#{department}/#{cop_name}" : cop_name
end
def qualified?
!department.nil?
end
def with_department(department)
self.class.new(department, cop_name)
end
end
end
end
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