File: headers.rb

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# frozen_string_literal: true

module Grape
  module DSL
    module Headers
      # This method has four responsibilities:
      # 1. Set a specifc header value by key
      # 2. Retrieve a specifc header value by key
      # 3. Retrieve all headers that have been set
      # 4. Delete a specifc header key-value pair
      def header(key = nil, val = nil)
        if key
          val ? header[key.to_s] = val : header.delete(key.to_s)
        else
          @header ||= {}
        end
      end
      alias headers header
    end
  end
end