class SyntaxTree::Backref

Backref represents a global variable referencing a matched value. It comes in the form of a $ followed by a positive integer.

$1

Attributes

comments[R]

Array[ Comment | EmbDoc ]: the comments attached to this node

value[R]

String: the name of the global backreference variable

Public Class Methods

new(value:, location:) click to toggle source

# File lib/syntax_tree/node.rb, line 1635
def initialize(value:, location:)
  @value = value
  @location = location
  @comments = []
end

Public Instance Methods

===(other) click to toggle source

# File lib/syntax_tree/node.rb, line 1670
def ===(other)
  other.is_a?(Backref) && value === other.value
end

accept(visitor) click to toggle source

# File lib/syntax_tree/node.rb, line 1641
def accept(visitor)
  visitor.visit_backref(self)
end

child_nodes() click to toggle source

# File lib/syntax_tree/node.rb, line 1645
def child_nodes
  []
end

Also aliased as: deconstruct

copy(value: nil, location: nil) click to toggle source

# File lib/syntax_tree/node.rb, line 1649
def copy(value: nil, location: nil)
  node =
    Backref.new(
      value: value || self.value,
      location: location || self.location
    )

  node.comments.concat(comments.map(&:copy))
  node
end

deconstruct()

Alias for: child_nodes

deconstruct_keys(_keys) click to toggle source

# File lib/syntax_tree/node.rb, line 1662
def deconstruct_keys(_keys)
  { value: value, location: location, comments: comments }
end

format(q) click to toggle source

# File lib/syntax_tree/node.rb, line 1666
def format(q)
  q.text(value)
end