class Prism::BackReferenceReadNode

表示读取前一个匹配中的字段的引用。

$'
^^

属性

name [R]

后向引用变量的名称，包括前导的 ‘$`。

$& # name `:$&`

$+ # name `:$+`

公共类方法

new (source, node_id, location, flags, name)

源代码

# File lib/prism/node.rb, line 1406
def initialize(source, node_id, location, flags, name)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @name = name
end

初始化一个新的 BackReferenceReadNode 节点。

type ()

源代码

# File lib/prism/node.rb, line 1465
def self.type
  :back_reference_read_node
end

返回此节点类型的符号表示形式。请参阅 ‘Node::type’。

公共实例方法

=== (other)

源代码

# File lib/prism/node.rb, line 1471
def ===(other)
  other.is_a?(BackReferenceReadNode) &&
    (name === other.name)
end

为节点实现大小写相等性。这实际上是 ==，但不比较位置的值。位置仅检查是否存在。

accept (visitor)

源代码

# File lib/prism/node.rb, line 1415
def accept(visitor)
  visitor.visit_back_reference_read_node(self)
end

def accept: (Visitor visitor) -> void

child_nodes ()

源代码

# File lib/prism/node.rb, line 1420
def child_nodes
  []
end

def child_nodes: () -> Array[nil | Node]

也别名为：deconstruct

comment_targets ()

源代码

# File lib/prism/node.rb, line 1430
def comment_targets
  [] #: Array[Prism::node | Location]
end

def comment_targets: () -> Array[Node | Location]

compact_child_nodes ()

源代码

# File lib/prism/node.rb, line 1425
def compact_child_nodes
  []
end

def compact_child_nodes: () -> Array

copy (node_id: self.node_id, location: self.location, flags: self.flags, name: self.name)

源代码

# File lib/prism/node.rb, line 1435
def copy(node_id: self.node_id, location: self.location, flags: self.flags, name: self.name)
  BackReferenceReadNode.new(source, node_id, location, flags, name)
end

def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?name: Symbol) -> BackReferenceReadNode

deconstruct ()

def deconstruct: () -> Array[nil | Node]

别名为: child_nodes

deconstruct_keys (keys)

源代码

# File lib/prism/node.rb, line 1443
def deconstruct_keys(keys)
  { node_id: node_id, location: location, name: name }
end

def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, name: Symbol }

inspect ()

源代码

# File lib/prism/node.rb, line 1455
def inspect
  InspectVisitor.compose(self)
end

def inspect -> String

type ()

源代码

# File lib/prism/node.rb, line 1460
def type
  :back_reference_read_node
end

返回此节点类型的符号表示形式。请参阅 ‘Node#type’。