Module: Decanter::ValueParser::Core::ClassMethods

Defined in:
lib/decanter/value_parser/core.rb

Instance Method Summary collapse

Instance Method Details

#allow(*args) ⇒ Object 



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# File 'lib/decanter/value_parser/core.rb', line 49

def allow(*args)
  @allowed = args
end

#parse(name, values, options = {}) ⇒ Object 



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# File 'lib/decanter/value_parser/core.rb', line 11

def parse(name, values, options={})

  value_ary = values.is_a?(Array) ? values : [values]

  # want to treat 'false' as an actual value
  if value_ary.all? { |value| value.nil? || value == "" }
    if options[:required]
      raise ArgumentError.new("No value for required argument: #{name}")
    else
      return { name => nil }
    end
  end

  if @allowed && value_ary.all? { |value| @allowed.include?(value.class) }
    return { name => values }
  end

  unless @parser
    raise ArgumentError.new("No parser for argument: #{name} with types: #{value_ary.map(&:class).join(', ')}")
  end

  case @result
  when :raw
    # Parser result must be a hash
    parsed = @parser.call(name, values, options)
    parsed.is_a?(Hash) ?
      parsed :
      raise(ArgumentError.new("Result of parser #{self.name} with values #{values} was #{parsed} when it must be a hash."))
  else
    # Parser result will be treated as a single value belonging to the name
    { name => @parser.call(name, values, options) }
  end
end

#parser(&block) ⇒ Object 



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# File 'lib/decanter/value_parser/core.rb', line 45

def parser(&block)
  @parser = block
end

#result(opt) ⇒ Object 



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# File 'lib/decanter/value_parser/core.rb', line 53

def result(opt)
  @result = opt
end