class Prism::UndefNode

表示使用 ‘undef’ 关键字。

undef :foo, :bar, :baz
^^^^^^^^^^^^^^^^^^^^^^

属性

names[R]

attr_reader names: Array[SymbolNode | InterpolatedSymbolNode]

公共类方法

new(source, node_id, location, flags, names, keyword_loc) 点击以切换源代码

初始化一个新的 UndefNode 节点。

# File prism/node.rb, line 17406
def initialize(source, node_id, location, flags, names, keyword_loc)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @names = names
  @keyword_loc = keyword_loc
end

type() 点击以切换源代码

返回此节点类型的符号表示。参见 ‘Node::type’。

# File prism/node.rb, line 17480
def self.type
  :undef_node
end

公共实例方法

===(other) 点击以切换源代码

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。

# File prism/node.rb, line 17486
def ===(other)
  other.is_a?(UndefNode) &&
    (names.length == other.names.length) &&
    names.zip(other.names).all? { |left, right| left === right } &&
    (keyword_loc.nil? == other.keyword_loc.nil?)
end

accept(visitor) 点击以切换源代码

def accept: (Visitor visitor) -> void

# File prism/node.rb, line 17416
def accept(visitor)
  visitor.visit_undef_node(self)
end

child_nodes() 点击以切换源代码

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

# File prism/node.rb, line 17421
def child_nodes
  [*names]
end

也别名为：deconstruct

comment_targets() 点击以切换源代码

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

# File prism/node.rb, line 17431
def comment_targets
  [*names, keyword_loc] #: Array[Prism::node | Location]
end

compact_child_nodes() 点击以切换源代码

def compact_child_nodes: () -> Array

# File prism/node.rb, line 17426
def compact_child_nodes
  [*names]
end

copy(node_id: self.node_id, location: self.location, flags: self.flags, names: self.names, keyword_loc: self.keyword_loc) 点击以切换源代码

def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?names: Array[SymbolNode | InterpolatedSymbolNode], ?keyword_loc: Location) -> UndefNode

# File prism/node.rb, line 17436
def copy(node_id: self.node_id, location: self.location, flags: self.flags, names: self.names, keyword_loc: self.keyword_loc)
  UndefNode.new(source, node_id, location, flags, names, keyword_loc)
end

deconstruct()

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

别名为：child_nodes

deconstruct_keys(keys) 点击以切换源代码

def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, names: Array[SymbolNode | InterpolatedSymbolNode], keyword_loc: Location }

# File prism/node.rb, line 17444
def deconstruct_keys(keys)
  { node_id: node_id, location: location, names: names, keyword_loc: keyword_loc }
end

inspect() 点击以切换源代码

def inspect -> String

# File prism/node.rb, line 17470
def inspect
  InspectVisitor.compose(self)
end

keyword() 点击以切换源代码

def keyword: () -> String

# File prism/node.rb, line 17465
def keyword
  keyword_loc.slice
end

keyword_loc() 点击以切换源代码

attr_reader keyword_loc: Location

# File prism/node.rb, line 17452
def keyword_loc
  location = @keyword_loc
  return location if location.is_a?(Location)
  @keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end

save_keyword_loc(repository) 点击以切换源代码

使用给定的已保存源保存 keyword_loc 位置，以便稍后检索。

# File prism/node.rb, line 17460
def save_keyword_loc(repository)
  repository.enter(node_id, :keyword_loc)
end

type() 点击以切换源代码

返回此节点类型的符号表示。参见 ‘Node#type’。

# File prism/node.rb, line 17475
def type
  :undef_node
end