Class: Babl::Nodes::With

Inherits:
Object
  • Object
show all
Defined in:
lib/babl/nodes/with.rb

Instance Method Summary collapse

Instance Method Details

#render(frame) ⇒ Object 



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# File 'lib/babl/nodes/with.rb', line 45

def render(frame)
    # When there is only 0 or 1 input node, we can avoid the allocation of an array
    value =
        case nodes.size
        when 0
            rescue_errors(frame) { block.call }
        when 1
            input = nodes.first.render(frame)
            rescue_errors(frame) { block.call(input) }
        else
            inputs = nodes.map { |node| node.render(frame) }
            rescue_errors(frame) { block.call(*inputs) }
        end

    frame.move_forward(value, :__block__) do |new_frame|
        node.render(new_frame)
    end
end