Class: Twig::NodeVisitor::Spreader

Inherits:
Base
  • Object
show all
Defined in:
lib/twig/node_visitor/spreader.rb

Overview

This visitor checks the contents of the Spread operator to see if it’s a hash or array. If it is, it converts it to a HashSpread or ArraySpread node.

The cases where this is not, would be some kind of variable expression which we cannot determine at compile time, and still need to be sent through the ArgumentSpreader so that they can be spread properly into the destination callable.

Instance Method Summary collapse

Methods inherited from Base

#priority

Instance Method Details

#enter_node(node, env) ⇒ Object 



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# File 'lib/twig/node_visitor/spreader.rb', line 12

def enter_node(node, env)
  node
end

#leave_node(node, env) ⇒ Object 



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# File 'lib/twig/node_visitor/spreader.rb', line 16

def leave_node(node, env)
  unless node.is_a?(Node::Expression::Unary::Spread)
    return node
  end

  if node.nodes[:node].instance_of?(Node::Expression::Hash)
    return Node::Expression::Unary::HashSpread.new(
      node.nodes[:node],
      node.lineno
    )
  end

  if node.nodes[:node].instance_of?(Node::Expression::Array)
    return Node::Expression::Unary::ArraySpread.new(
      node.nodes[:node],
      node.lineno
    )
  end

  node
end