Class: Campa::Repl

Inherits:
Object
  • Object
show all
Defined in:
lib/campa/repl.rb

Instance Method Summary collapse

Constructor Details

#initialize(evaler, context, reader: Reader) ⇒ Repl

Returns a new instance of Repl.



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# File 'lib/campa/repl.rb', line 3

def initialize(evaler, context, reader: Reader)
  @reader = reader
  @evaler = evaler
  @context = context
  @environment = @context.push(Context.new)
  @printer = Printer.new
end

Instance Method Details

#run(input, output) ⇒ Object

rubocop: disable Metrics/MethodLength



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# File 'lib/campa/repl.rb', line 12

def run(input, output)
  output.print "=> "
  reader = @reader.new(input)

  loop do
    begin
      token = reader.next
      break if token.nil?

      show(output, evaler.call(token, environment))
    rescue ExecutionError => e
      handle_exec_error(output, e)
    rescue StandardError => e
      handle_standard_error(output, e)
    end

    output.print "=> "
  end
rescue Interrupt
  output.puts "see you soon"
end