类 Prism::NilNode

表示使用 ‘nil’ 关键字。

nil
^^^

公共类方法

new (source, node_id, location, flags)

源

# File lib/prism/node.rb, line 13486
def initialize(source, node_id, location, flags)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
end

初始化一个新的 NilNode 节点。

type ()

源

# File lib/prism/node.rb, line 13537
def self.type
  :nil_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

# File lib/prism/node.rb, line 13543
def ===(other)
  other.is_a?(NilNode)
end

为节点实现 case-equality。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

# File lib/prism/node.rb, line 13494
def accept(visitor)
  visitor.visit_nil_node(self)
end

def accept: (Visitor visitor) -> void

child_nodes ()

源

# File lib/prism/node.rb, line 13499
def child_nodes
  []
end

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

也别名为：deconstruct

comment_targets ()

源

# File lib/prism/node.rb, line 13509
def comment_targets
  [] #: Array[Prism::node | Location]
end

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

compact_child_nodes ()

源

# File lib/prism/node.rb, line 13504
def compact_child_nodes
  []
end

def compact_child_nodes: () -> Array

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

源

# File lib/prism/node.rb, line 13514
def copy(node_id: self.node_id, location: self.location, flags: self.flags)
  NilNode.new(source, node_id, location, flags)
end

def copy: (?node_id: Integer, ?location: Location, ?flags: Integer) -> NilNode

deconstruct ()

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

别名为：child_nodes

deconstruct_keys (keys)

源

# File lib/prism/node.rb, line 13522
def deconstruct_keys(keys)
  { node_id: node_id, location: location }
end

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

inspect ()

源

# File lib/prism/node.rb, line 13527
def inspect
  InspectVisitor.compose(self)
end

def inspect -> String

type ()

源

# File lib/prism/node.rb, line 13532
def type
  :nil_node
end

返回此节点类型的符号表示形式。请参阅 ‘Node#type’。