Class: Fuelcell::Parser::ArgHandler

Inherits:
BaseHandler show all
Defined in:
lib/fuelcell/parser/arg_handler.rb

Overview

Parse args based on command definitions & cast the value into the correct type. This will leave us with the args array (its values modified by the command definitions) and an args hash with its keys derived from the definition. Boths theses lists are needed to create the ArgResult which is returned

Constant Summary collapse

SKIP = 
'__FUELCELL_SKIP_ARG__'

Instance Method Summary collapse

Methods inherited from BaseHandler

#arg?, #assign_opt_value, #cast, #cast_array, #cast_bool, #cast_hash, #cast_numeric, #find_opt, #found_opt_flag, #take_first_arg

Instance Method Details

#call(cmd, args) ⇒ Fuelcell::Action::ArgsResults

Parameters:

  • cmd (Fuelcell::Command)
  • args (Array) —

    raw args from ARGV

Returns:

  • (Fuelcell::Action::ArgsResults) 


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# File 'lib/fuelcell/parser/arg_handler.rb', line 13

def call(cmd, args)
  list = {}
  args_manager = cmd.args
  opts_manager = cmd.opts

  return create_results(args, list) if opts_manager.callable?

  args_manager.each_with_index do |arg, index|
    value = args.fetch(index) {
      fail "argument at #{index} is required" if arg.required?
      arg.default? ? arg.default : SKIP
    }
    next if value == SKIP
    args[index] = cast(arg.type, value)
    # assign a pointer to the casted value
    list[arg.name] = index
  end

  create_results(args, list)
end