Class: Flor::Pro::Empty

Inherits:
Flor::Procedure show all
Defined in:
lib/flor/pcore/empty.rb

Constant Summary

Constants inherited from Flor::Procedure

Flor::Procedure::RVARS, Flor::Procedure::TRUE_ATTS

Instance Attribute Summary

Attributes inherited from Node

#message

Instance Method Summary collapse

Methods inherited from Flor::Procedure

[], core?, #debug_msg, #debug_tree, #end, #flank, #heap, inherited, make, names, #prepare_on_receive_last, #trigger_on_error

Methods inherited from Node

#child_id, #cnodes, #cnodes_any?, #cnodes_empty?, #deref, #descendant_of?, #domain, #exid, #fei, #from, #h, #initialize, #lookup_tree, #lookup_value, #message_or_node_payload, #nid, #node_closed?, #node_ended?, #node_open?, #node_payload, #node_payload_ret, #node_status, #node_status_flavour, #on_error_parent, #parent, #payload, #payload_ret, #point, #reheap, #to_procedure_node, #tree

Constructor Details

This class inherits a constructor from Flor::Node

Instance Method Details

#pre_execute ⇒ Object 



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# File 'lib/flor/pcore/empty.rb', line 42

def pre_execute

  unatt_unkeyed_children
end

#receive_last ⇒ Object 



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# File 'lib/flor/pcore/empty.rb', line 47

def receive_last

  ret =
    case r = payload['ret']
    when Array, Hash, String then r.empty?
    when nil then true
    else
      fail Flor::FlorError.new(
        'argument is not an array, an object, a string or null', self)
    end

  wrap_reply('ret' => ret)
end