module RuboCop::Cop::AllowedPattern

def allowed_line?(line)
  line = if line.respond_to?(:source_line)
           line.source_line
         elsif line.respond_to?(:node)
           line.node.source_range.source_line
         end
  matches_allowed_pattern?(line)
end

def allowed_patterns
  # Since there could be a pattern specified in the default config, merge the two
  # arrays together.
  if cop_config_deprecated_methods_values.any?(Regexp)
    cop_config_patterns_values + cop_config_deprecated_methods_values
  else
    cop_config_patterns_values
  end
end

def cop_config_deprecated_methods_values
  @cop_config_deprecated_methods_values ||=
    Array(cop_config.fetch('IgnoredMethods', [])) +
    Array(cop_config.fetch('ExcludedMethods', []))
end

def cop_config_patterns_values
  @cop_config_patterns_values ||=
    Array(cop_config.fetch('AllowedPatterns', [])) +
    Array(cop_config.fetch('IgnoredPatterns', []))
end

def matches_allowed_pattern?(line)
  allowed_patterns.any? { |pattern| Regexp.new(pattern).match?(line) }
end