Class: BinData::BaseArgProcessor

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

Overview

ArgProcessors process the arguments passed to BinData::Base.new into the form required to initialise the BinData object.

Any passed parameters are sanitized so the BinData object doesn't need to perform error checking on the parameters.

Constant Summary collapse

@@empty_hash = 
Hash.new.freeze

Instance Method Summary collapse

Instance Method Details

#extract_args(obj_class, obj_args) ⇒ Object

Takes the arguments passed to BinData::Base.new and extracts [value, sanitized_parameters, parent].



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# File 'lib/bindata/base.rb', line 296

def extract_args(obj_class, obj_args)
  value, params, parent = separate_args(obj_class, obj_args)
  sanitized_params = SanitizedParameters.sanitize(params, obj_class)

  [value, sanitized_params, parent]
end

#sanitize_parameters!(obj_class, obj_params) ⇒ Object

Performs sanity checks on the given parameters. This method converts the parameters to the form expected by the data object.



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# File 'lib/bindata/base.rb', line 329

def sanitize_parameters!(obj_class, obj_params); end

#separate_args(_obj_class, obj_args) ⇒ Object

Separates the arguments passed to BinData::Base.new into [value, parameters, parent]. Called by #extract_args.



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# File 'lib/bindata/base.rb', line 305

def separate_args(_obj_class, obj_args)
  args = obj_args.dup
  value = parameters = parent = nil

  if args.length > 1 && args.last.is_a?(BinData::Base)
    parent = args.pop
  end

  if args.length > 0 && args.last.is_a?(Hash)
    parameters = args.pop
  end

  if args.length > 0
    value = args.pop
  end

  parameters ||= @@empty_hash

  [value, parameters, parent]
end