Class: NRSER::Props::Storage::InstanceVariables

Inherits:
Object
  • Object
show all
Defined in:
lib/nrser/props/storage/instance_variables.rb

Instance Method Summary collapse

Constructor Details

#initialize(immutable:) ⇒ InstanceVariables 



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# File 'lib/nrser/props/storage/instance_variables.rb', line 33

def initialize immutable:
  @immutable = !!immutable
end

Instance Method Details

#get(instance, prop) ⇒ Object 



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# File 'lib/nrser/props/storage/instance_variables.rb', line 43

def get instance, prop
  instance.instance_variable_get "@#{ prop.name }"
end

#immutable? ⇒ Boolean 



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# File 'lib/nrser/props/storage/instance_variables.rb', line 38

def immutable?
  @immutable
end

#put(instance, prop, value) ⇒ Object 



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# File 'lib/nrser/props/storage/instance_variables.rb', line 48

def put instance, prop, value
  if immutable?
    raise RuntimeError.new binding.erb "      Properties of \#{ instance.class.safe_name } are immutable.\n      \n      Tried to set prop \#{ prop.name } to value\n      \n          <%= value.pretty_inspect %>\n      \n      in instance\n      \n          <%= instance.pretty_inspect %>\n      \n    END\n  end\n  \n  instance.instance_variable_set \"@\#{ prop.name }\", value\nend\n"