Class: Synvert::Core::Rewriter::GotoScope

Inherits:
Scope
  • Object
show all
Defined in:
lib/synvert/core/rewriter/scope/goto_scope.rb

Overview

Go to and change its scope to a child node.

Instance Method Summary collapse

Constructor Details

#initialize(instance, child_node_name) { ... } ⇒ GotoScope

Initialize a GotoScope.

Parameters:

Yields:

  • run on the child node



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# File 'lib/synvert/core/rewriter/scope/goto_scope.rb', line 11

def initialize(instance, child_node_name, &block)
  super(instance, &block)
  @child_node_name = child_node_name
end

Instance Method Details

#process ⇒ Object

Go to a child now, then run the block code on the the child node.



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# File 'lib/synvert/core/rewriter/scope/goto_scope.rb', line 17

def process
  current_node = @instance.current_node
  return unless current_node

  child_node = current_node
  @child_node_name.to_s.split('.').each do |child_node_name|
    child_node = child_node.is_a?(Array) && child_node_name =~ /-?\d+/ ? child_node[child_node_name.to_i] : child_node.send(child_node_name)
  end
  if child_node.is_a?(Array)
    child_node.each do |child_child_node|
      @instance.process_with_other_node child_child_node do
        @instance.instance_eval(&@block)
      end
    end
  else
    @instance.process_with_other_node child_node do
      @instance.instance_eval(&@block)
    end
  end
end