Class: JSONPath::Nodes::SliceNode

Inherits:
PathNode
  • Object
show all
Defined in:
lib/jsonpath/nodes.rb

Instance Method Summary collapse

Methods inherited from PathNode

#recurse, #traverse, #traversing_descendants?

Instance Method Details

#descend(*objects) ⇒ Object 



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# File 'lib/jsonpath/nodes.rb', line 120

def descend(*objects)
  results = []
  traverse(objects) do |obj|
    if obj.is_a?(Array)
      values = obj[start_offset..stop_offset(obj)]
      0.step(values.size - 1, step_size) do |n|
        results << values[n]
      end
    end
  end
  results
end

#start_offset ⇒ Object 



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# File 'lib/jsonpath/nodes.rb', line 133

def start_offset
  @start_offset ||= Integer(start.text_value)
end

#step_size ⇒ Object 



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# File 'lib/jsonpath/nodes.rb', line 145

def step_size
  @step_size ||= if respond_to?(:step)
    Integer(step.text_value)
  else
    1
  end
end

#stop_offset(obj) ⇒ Object 



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# File 'lib/jsonpath/nodes.rb', line 137

def stop_offset(obj)
  @stop_offset ||= if respond_to?(:stop)
    Integer(stop.text_value)
  else
    obj.size
  end
end