class Prism::UndefNode
表示使用 ‘undef` 关键字。
undef :foo, :bar, :baz ^^^^^^^^^^^^^^^^^^^^^^
属性
attr_reader names: Array[SymbolNode | InterpolatedSymbolNode]
公共类方法
源代码
# File lib/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
初始化一个新的 UndefNode
节点。
源代码
# File lib/prism/node.rb, line 17480 def self.type :undef_node end
返回此节点类型的符号表示形式。请参见 ‘Node::type`。
公共实例方法
源代码
# File lib/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
为节点实现 case-equality。这实际上是 ==,但不比较位置的值。仅检查位置是否存在。
源代码
# File lib/prism/node.rb, line 17416 def accept(visitor) visitor.visit_undef_node(self) end
def accept: (Visitor
visitor) -> void
源代码
# File lib/prism/node.rb, line 17421 def child_nodes [*names] end
def child_nodes
: () -> Array[nil | Node]
源代码
# File lib/prism/node.rb, line 17431 def comment_targets [*names, keyword_loc] #: Array[Prism::node | Location] end
def comment_targets
: () -> Array[Node | Location]
源代码
# File lib/prism/node.rb, line 17426 def compact_child_nodes [*names] end
def compact_child_nodes
: () -> Array
源代码
# File lib/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
def copy: (?node_id: Integer
, ?location: Location
, ?flags: Integer
, ?names: Array[SymbolNode | InterpolatedSymbolNode], ?keyword_loc: Location
) -> UndefNode
源代码
# File lib/prism/node.rb, line 17444 def deconstruct_keys(keys) { node_id: node_id, location: location, names: names, keyword_loc: keyword_loc } end
def deconstruct_keys
: (Array keys) -> { node_id: Integer
, location: Location
, names: Array[SymbolNode | InterpolatedSymbolNode], keyword_loc
: Location
}
源代码
# File lib/prism/node.rb, line 17470 def inspect InspectVisitor.compose(self) end
def inspect -> String
源代码
# File lib/prism/node.rb, line 17465 def keyword keyword_loc.slice end
def keyword: () -> String
源代码
# File lib/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
attr_reader keyword_loc
: Location
源代码
# File lib/prism/node.rb, line 17460 def save_keyword_loc(repository) repository.enter(node_id, :keyword_loc) end
使用给定的保存的源保存 keyword_loc
位置,以便稍后检索。
源代码
# File lib/prism/node.rb, line 17475 def type :undef_node end
返回此节点类型的符号表示形式。请参见 ‘Node#type`。