Class: Wongi::Engine::DSL::Clause::Neg

Inherits:
Has
  • Object
show all
Defined in:
lib/wongi-engine/dsl/clause/fact.rb

Instance Attribute Summary collapse

Attributes inherited from Has

#object, #predicate, #subject, #time

Instance Method Summary collapse

Methods inherited from Has

#initialize

Methods included from CoreExt

included

Constructor Details

This class inherits a constructor from Wongi::Engine::DSL::Clause::Has

Instance Attribute Details

#unsafe ⇒ Object (readonly)

Returns the value of attribute unsafe.



49
50
51
 
# File 'lib/wongi-engine/dsl/clause/fact.rb', line 49

def unsafe
  @unsafe
end

Instance Method Details

#compile(context) ⇒ Object

Raises:



50
51
52
53
54
 
# File 'lib/wongi-engine/dsl/clause/fact.rb', line 50

def compile context
  tests, assignment = parse_variables(context)
  raise DefinitionError.new("Negative matches may not introduce new variables: #{assignment.variables}") unless assignment.root?
  context.tap { |c| c.neg_node(self, tests, unsafe) }
end

#inspect ⇒ Object 



56
57
58
 
# File 'lib/wongi-engine/dsl/clause/fact.rb', line 56

def inspect
  "<-#{subject.inspect} #{predicate.inspect} #{object.inspect}>"
end