Method: ShEx::Algebra::Start#validate!

Defined in:
lib/shex/algebra/start.rb

#validate! ⇒ Operator

expression must be a ShapeExpression

Returns:

Raises:



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# File 'lib/shex/algebra/start.rb', line 37

def validate!
  case expression
  when ShapeExpression
  when RDF::Resource
    ref = schema.find(expression)
    ref.is_a?(ShapeExpression) ||
    structure_error("#{json_type} must reference a ShapeExpression: #{ref}")
  else
    structure_error("#{json_type} must reference a ShapeExpression: #{ref}")
  end
  super
end