Class: Swarm::Expression

Inherits:
HiveDweller show all
Defined in:
lib/swarm/expression.rb

Instance Attribute Summary

Attributes inherited from HiveDweller

#hive, #id

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from HiveDweller

#==, all, #attributes, #change_attribute, #changed?, create, #delete, each, fetch, ids, #initialize, many_to_one, #new?, new_from_storage, #reload!, #save, #set_attributes, set_columns, #storage, #storage_id, storage_id_for_key, #to_hash

Constructor Details

This class inherits a constructor from Swarm::HiveDweller

Class Method Details

.inherited(subclass) ⇒ Object 



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# File 'lib/swarm/expression.rb', line 10

def inherited(subclass)
  super
  subclass.set_columns *columns
end

.storage_type ⇒ Object 



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# File 'lib/swarm/expression.rb', line 6

def storage_type
  "Expression"
end

Instance Method Details

#_apply ⇒ Object 



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# File 'lib/swarm/expression.rb', line 52

def _apply
  set_milestone("applied_at")
  meets_conditions? ? work : reply
  save
end

#_reply ⇒ Object 



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# File 'lib/swarm/expression.rb', line 58

def _reply
  set_milestone("replied_at")
  save
  reply_to_parent
end

#apply ⇒ Object 



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# File 'lib/swarm/expression.rb', line 43

def apply
  hive.queue('apply', self)
end

#arguments ⇒ Object 



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# File 'lib/swarm/expression.rb', line 85

def arguments
  node[1]
end

#branch_position ⇒ Object 



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# File 'lib/swarm/expression.rb', line 19

def branch_position
  @branch_position ||= position.last
end

#command ⇒ Object 



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# File 'lib/swarm/expression.rb', line 81

def command
  node[0]
end

#evaluator ⇒ Object 



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# File 'lib/swarm/expression.rb', line 23

def evaluator
  @evaluator ||= Swarm::ExpressionEvaluator.new(self)
end

#meets_conditions? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/swarm/expression.rb', line 27

def meets_conditions?
  evaluator.all_conditions_met?
end

#node ⇒ Object 



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# File 'lib/swarm/expression.rb', line 77

def node
  @node ||= parent.node_at_position(branch_position)
end

#node_at_position(position) ⇒ Object 



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# File 'lib/swarm/expression.rb', line 93

def node_at_position(position)
  tree[position]
end

#parent ⇒ Object 



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# File 'lib/swarm/expression.rb', line 35

def parent
  if root?
    process
  else
    Expression.fetch(parent_id, hive: hive)
  end
end

#replied? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/swarm/expression.rb', line 72

def replied?
  reload!
  !!replied_at
end

#replied_at ⇒ Object 



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# File 'lib/swarm/expression.rb', line 68

def replied_at
  get_milestone("replied_at")
end

#reply ⇒ Object 



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# File 'lib/swarm/expression.rb', line 47

def reply
  save
  hive.queue('reply', self)
end

#reply_to_parent ⇒ Object 



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# File 'lib/swarm/expression.rb', line 64

def reply_to_parent
  parent.move_on_from(self)
end

#root? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/swarm/expression.rb', line 31

def root?
  process_id == parent_id
end

#tree ⇒ Object 



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# File 'lib/swarm/expression.rb', line 89

def tree
  node[2]
end