Class: CmdCreator::SpecParser

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

Instance Method Summary collapse

Constructor Details

#initialize(words, args) ⇒ SpecParser

Returns a new instance of SpecParser.



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# File 'lib/cmd_creator.rb', line 16

def initialize(words, args)
  @args = args
  @words = words
end

Instance Method Details

#asub(atom) ⇒ Object 



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# File 'lib/cmd_creator.rb', line 68

def asub(atom)
  arr = atom.split(CmdCreator::Argument)
  tmp = []
  arr.each_with_index {|ea, ind|
    if 1 == ind % 2
      if @args[ea.to_sym]
        tmp << @args[ea.to_sym].to_s
      else
        return nil
      end
    else
      tmp << ea
    end
  }
  
  tmp.join("")
end

#parse ⇒ Object 



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# File 'lib/cmd_creator.rb', line 21

def parse
  spec = Spec.new
  spec.type = true
  
  atom = ""
  while word = @words[0]
    case word
    when CmdCreator::MandatoryStart
      @words.shift
      
      ssp = SubSpecParser.new(
        CmdCreator::MandatoryStop, @words, @args
      ).parse
      unless replace(spec, atom, ssp)
        raise CmdCreator::NotMandatoryError.new(atom)
      end
      
      atom = ""
      
    when CmdCreator::OptionalStart
      @words.shift
      ssp = SubSpecParser.new(
        CmdCreator::OptionalStop, @words, @args
      ).parse
      unless replace(spec, atom, ssp)
        raise CmdCreator::NotMandatoryError.new(atom)
      end
      atom = ""
    when CmdCreator::MandatoryStop
      return spec
    when CmdCreator::OptionalStop
      return spec
    else
      @words.shift
      atom << word
    end
  end
  
  if atom.size > 0
    unless replace(spec, atom)
      raise CmdCreator::NotMandatoryError.new(atom)
    end
  end
  
  return spec
end

#replace(spec, atom, sspe = nil) ⇒ Object 



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# File 'lib/cmd_creator.rb', line 86

def replace(spec, atom, sspe = nil)
  if atom.size > 0
    subs = asub(atom)
    if subs
      spec << subs
    else
      return false
    end
  end
  spec << sspe if sspe.size > 0
  return true
end