Class: FEEL::Interval

Inherits:
Node
  • Object
show all
Defined in:
lib/feel/nodes.rb

Overview

  1. interval = ( open interval start | closed interval start ) , endpoint , “..” , endpoint , ( open interval end | closed interval end ) ;

Instance Method Summary collapse

Methods inherited from Node

#access_property, #qualified_names_in_context, #raise_evaluation_error

Instance Method Details

#eval(context = {}) ⇒ Object 



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# File 'lib/feel/nodes.rb', line 155

def eval(context = {})
  start = start_token.text_value
  finish = end_token.text_value
  first_val = first.eval(context)
  second_val = second.eval(context)
  return ->(_input) { nil } if first_val.nil? || second_val.nil?

  case [start, finish]
  when ["(", ")"]
    ->(input) { input.nil? ? nil : first_val < input && input < second_val }
  when ["[", "]"]
    ->(input) { input.nil? ? nil : first_val <= input && input <= second_val }
  when ["(", "]"]
    ->(input) { input.nil? ? nil : first_val < input && input <= second_val }
  when ["[", ")"]
    ->(input) { input.nil? ? nil : first_val <= input && input < second_val }
  end
end