Class: Refract::BasicVisitor

Inherits:
Object
  • Object
show all
Defined in:
lib/refract/basic_visitor.rb

Direct Known Subclasses

Formatter, MutationVisitor, Visitor

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ BasicVisitor

Returns a new instance of BasicVisitor.



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# File 'lib/refract/basic_visitor.rb', line 5

def initialize
	@stack = []
end

Class Method Details

.visit(node_class) ⇒ Object 



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# File 'lib/refract/basic_visitor.rb', line 9

def self.visit(node_class, &)
	define_method("visit_#{node_class.type}", &)
end

Instance Method Details

#around_visit(node) {|node| ... } ⇒ Object

Yields:

  • (node) 


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# File 'lib/refract/basic_visitor.rb', line 13

def around_visit(node)
	yield(node)
end

#visit(node) ⇒ Object 



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# File 'lib/refract/basic_visitor.rb', line 17

def visit(node)
	return unless node

	@stack.push(node)
	around_visit(node) do |n|
		n.accept(self).tap { @stack.pop }
	end
end

#visit_each(nodes) ⇒ Object 



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# File 'lib/refract/basic_visitor.rb', line 26

def visit_each(nodes)
	nodes = nodes.compact

	i, len = 0, nodes.length
	if block_given?
		while i < len
			node = nodes[i]
			i += 1
			visit node
			yield unless i == len
		end
	else
		while i < len
			visit nodes[i]
			i += 1
		end
	end
end