Class: JSH::REPL

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

Constant Summary collapse

DEFAULT_PROMPT = 
"[{:number_of_times:}] jsh) "
PROMPT_SYNTAX = 
/\{:(.+?):\}/

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(base, options = {}) ⇒ REPL 



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# File 'lib/jsh/repl.rb', line 15

def initialize(base, options = {})
  @base = base
  @noprompt = options.fetch(:noprompt, false)
  @readline = options.fetch(:readline, true)
  @options = options
  config[:number_of_times] = 0
end

Instance Attribute Details

#base ⇒ Object

Returns the value of attribute base.



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# File 'lib/jsh/repl.rb', line 9

def base
  @base
end

#prompt ⇒ Object

Returns the value of attribute prompt.



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# File 'lib/jsh/repl.rb', line 9

def prompt
  @prompt
end

Class Method Details

.start(options) ⇒ Object 



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# File 'lib/jsh/repl.rb', line 11

def self.start(options)
  new(Base.new, options).start
end

Instance Method Details

#noprompt? ⇒ Boolean 



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# File 'lib/jsh/repl.rb', line 43

def noprompt?
  @noprompt
end

#readline? ⇒ Boolean 



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# File 'lib/jsh/repl.rb', line 47

def readline?
  @readline
end

#repl ⇒ Object 



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# File 'lib/jsh/repl.rb', line 29

def repl
  catch :halt do
    loop do
      input = read
      if command = commands[input.to_sym]
        command.arity != 0 ? command.call(base) : command.call
      else
        output.puts((input.nil? or input.empty?) ? "" : base.context.eval(input))
      end
      config[:number_of_times] += 1
    end
  end
end

#start ⇒ Object 



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# File 'lib/jsh/repl.rb', line 23

def start
  call_hook(:before)
  repl
  call_hook(:after)
end