Method: Statefully::State#method_missing

Defined in:
lib/statefully/state.rb

#method_missing(name, *args, &block) ⇒ Object (private)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Dynamically pass unknown messages to the underlying state storage

State fields become accessible through readers, like in an OpenStruct. A single state field can be questioned for existence by having its name followed by a question mark - eg. bacon?. A single state field can be force-accessed by having its name followed by an exclamation mark - eg. bacon!.

This method reeks of :reek:TooManyStatements.

Examples:

state = Statefully::State.create(bacon: 'tasty')

state.bacon
=> "tasty"

state.bacon?
=> true

state.bacon!
=> "tasty"

state.cabbage
NoMethodError: undefined method `cabbage' for #<Statefully::State::Success bacon="tasty">
        [STACK TRACE]

state.cabbage?
=> false

state.cabbage!
Statefully::Errors::StateMissing: field 'cabbage' missing from state
        [STACK TRACE]

Parameters:

  • name (Symbol|String)
  • args (Array<Object>)
  • block (Proc)

Returns:

  • (Object)

Raises:



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# File 'lib/statefully/state.rb', line 260

def method_missing(name, *args, &block)
  sym_name = name.to_sym
  return fetch(sym_name) if key?(sym_name)
  str_name = name.to_s
  modifier = str_name[-1]
  return super unless %w[? !].include?(modifier)
  base = str_name[0...-1].to_sym
  known = key?(base)
  return known if modifier == '?'
  return fetch(base) if known
  raise Errors::StateMissing, base
end