类 Prism::MultiTargetNode

表示一个多目标表达式。

a, (b, c) = 1, 2, 3
   ^^^^^^

它可以是 `MultiWriteNode` 的一部分，如上所述，也可以是 `for` 循环的目标

for a, b in [[1, 2], [3, 4]]
    ^^^^

属性

lefts [R]

表示 splat 节点之前的目标表达式。

a, (b, c, *) = 1, 2, 3, 4, 5
    ^^^^

splat 节点可以不存在，在这种情况下，所有目标表达式都在 left 字段中。

a, (b, c) = 1, 2, 3, 4, 5
    ^^^^

rest [R]

表示目标表达式中的 splat 节点。

a, (b, *c) = 1, 2, 3, 4
       ^^

变量可以为空，这会导致一个带有 `nil` 表达式字段的 `SplatNode`。

a, (b, *) = 1, 2, 3, 4
       ^

如果省略了 ‘*`，则此字段将包含一个 `ImplicitRestNode`

a, (b,) = 1, 2, 3, 4
     ^

rights [R]

表示 splat 节点之后的目标表达式。

a, (*, b, c) = 1, 2, 3, 4, 5
       ^^^^

公共类方法

new (source, node_id, location, flags, lefts, rest, rights, lparen_loc, rparen_loc)

源代码

# File lib/prism/node.rb, line 13017
def initialize(source, node_id, location, flags, lefts, rest, rights, lparen_loc, rparen_loc)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @lefts = lefts
  @rest = rest
  @rights = rights
  @lparen_loc = lparen_loc
  @rparen_loc = rparen_loc
end

初始化一个新的 MultiTargetNode 节点。

type ()

源代码

# File lib/prism/node.rb, line 13164
def self.type
  :multi_target_node
end

返回此节点类型的符号表示。请参阅 `Node::type`。

公共实例方法

=== (other)

源代码

# File lib/prism/node.rb, line 13170
def ===(other)
  other.is_a?(MultiTargetNode) &&
    (lefts.length == other.lefts.length) &&
    lefts.zip(other.lefts).all? { |left, right| left === right } &&
    (rest === other.rest) &&
    (rights.length == other.rights.length) &&
    rights.zip(other.rights).all? { |left, right| left === right } &&
    (lparen_loc.nil? == other.lparen_loc.nil?) &&
    (rparen_loc.nil? == other.rparen_loc.nil?)
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)

源代码

# File lib/prism/node.rb, line 13030
def accept(visitor)
  visitor.visit_multi_target_node(self)
end

def accept: (Visitor visitor) -> void

child_nodes ()

源代码

# File lib/prism/node.rb, line 13035
def child_nodes
  [*lefts, rest, *rights]
end

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

也别名为: deconstruct

comment_targets ()

源代码

# File lib/prism/node.rb, line 13049
def comment_targets
  [*lefts, *rest, *rights, *lparen_loc, *rparen_loc] #: Array[Prism::node | Location]
end

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

compact_child_nodes ()

源代码

# File lib/prism/node.rb, line 13040
def compact_child_nodes
  compact = [] #: Array[Prism::node]
  compact.concat(lefts)
  compact << rest if rest
  compact.concat(rights)
  compact
end

def compact_child_nodes: () -> Array

copy (node_id: self.node_id, location: self.location, flags: self.flags, lefts: self.lefts, rest: self.rest, rights: self.rights, lparen_loc: self.lparen_loc, rparen_loc: self.rparen_loc)

源代码

# File lib/prism/node.rb, line 13054
def copy(node_id: self.node_id, location: self.location, flags: self.flags, lefts: self.lefts, rest: self.rest, rights: self.rights, lparen_loc: self.lparen_loc, rparen_loc: self.rparen_loc)
  MultiTargetNode.new(source, node_id, location, flags, lefts, rest, rights, lparen_loc, rparen_loc)
end

deconstruct ()

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

别名为: child_nodes

deconstruct_keys (keys)

源代码

# File lib/prism/node.rb, line 13062
def deconstruct_keys(keys)
  { node_id: node_id, location: location, lefts: lefts, rest: rest, rights: rights, lparen_loc: lparen_loc, rparen_loc: rparen_loc }
end

def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, lefts: Array[LocalVariableTargetNode | InstanceVariableTargetNode | ClassVariableTargetNode | GlobalVariableTargetNode | ConstantTargetNode | ConstantPathTargetNode | CallTargetNode | IndexTargetNode | MultiTargetNode | RequiredParameterNode | BackReferenceReadNode | NumberedReferenceReadNode], rest: ImplicitRestNode | SplatNode | nil, rights: Array[LocalVariableTargetNode | InstanceVariableTargetNode | ClassVariableTargetNode | GlobalVariableTargetNode | ConstantTargetNode | ConstantPathTargetNode | CallTargetNode | IndexTargetNode | MultiTargetNode | RequiredParameterNode | BackReferenceReadNode | NumberedReferenceReadNode], lparen_loc: Location?, rparen_loc: Location? }

inspect ()

源代码

# File lib/prism/node.rb, line 13154
def inspect
  InspectVisitor.compose(self)
end

def inspect -> String

lparen ()

源代码

# File lib/prism/node.rb, line 13144
def lparen
  lparen_loc&.slice
end

def lparen: () -> String?

lparen_loc ()

源代码

# File lib/prism/node.rb, line 13103
def lparen_loc
  location = @lparen_loc
  case location
  when nil
    nil
  when Location
    location
  else
    @lparen_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
  end
end

开括号的位置。

a, (b, c) = 1, 2, 3
   ^

rparen ()

源代码

# File lib/prism/node.rb, line 13149
def rparen
  rparen_loc&.slice
end

def rparen: () -> String?

rparen_loc ()

源代码

# File lib/prism/node.rb, line 13125
def rparen_loc
  location = @rparen_loc
  case location
  when nil
    nil
  when Location
    location
  else
    @rparen_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
  end
end

闭括号的位置。

a, (b, c) = 1, 2, 3
        ^

save_lparen_loc (repository)

源代码

# File lib/prism/node.rb, line 13117
def save_lparen_loc(repository)
  repository.enter(node_id, :lparen_loc) unless @lparen_loc.nil?
end

使用给定的已保存源保存 lparen_loc 位置，以便稍后检索。

save_rparen_loc (repository)

源代码

# File lib/prism/node.rb, line 13139
def save_rparen_loc(repository)
  repository.enter(node_id, :rparen_loc) unless @rparen_loc.nil?
end

使用给定的已保存源保存 rparen_loc 位置，以便稍后检索。

type ()

源代码

# File lib/prism/node.rb, line 13159
def type
  :multi_target_node
end

返回此节点类型的符号表示。请参阅 `Node#type`。