class Prism::LocalVariableWriteNode

表示对局部变量的写入操作。

foo = 1
^^^^^^^

属性

depth [R]

为了找到此变量的声明，我们需要遍历的语义作用域的数量。

foo = 1         # depth 0

tap { foo = 1 } # depth 1

计算深度的具体规则可能因各个 Ruby 实现而异，因为语言并未指定。有关更多信息，请参阅[Prism 文档](github.com/ruby/prism/blob/main/docs/local_variable_depth.md)。

name [R]

局部变量的名称，它是一个[标识符](github.com/ruby/prism/blob/main/docs/parsing_rules.md#identifiers)。

foo = :bar # name `:foo`

abc = 123  # name `:abc`

value [R]

要写入局部变量的值。它可以是任何[非空表达式](github.com/ruby/prism/blob/main/docs/parsing_rules.md#non-void-expression)。

foo = :bar
      ^^^^

abc = 1234
      ^^^^

请注意，由于局部变量的名称在解析值之前已知，因此局部变量可以出现在其自身写入的值中，这是有效的。

foo = foo

公共类方法

new (source, node_id, location, flags, name, depth, name_loc, value, operator_loc)

源代码

# File lib/prism/node.rb, line 12207
def initialize(source, node_id, location, flags, name, depth, name_loc, value, operator_loc)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @name = name
  @depth = depth
  @name_loc = name_loc
  @value = value
  @operator_loc = operator_loc
end

初始化一个新的 LocalVariableWriteNode 节点。

type ()

源代码

# File lib/prism/node.rb, line 12329
def self.type
  :local_variable_write_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 12335
def ===(other)
  other.is_a?(LocalVariableWriteNode) &&
    (name === other.name) &&
    (depth === other.depth) &&
    (name_loc.nil? == other.name_loc.nil?) &&
    (value === other.value) &&
    (operator_loc.nil? == other.operator_loc.nil?)
end

实现节点的 case-equality。这实际上是 ==，但不比较位置的值。仅检查位置是否存在。

accept (visitor)

源代码

# File lib/prism/node.rb, line 12220
def accept(visitor)
  visitor.visit_local_variable_write_node(self)
end

def accept: (Visitor visitor) -> void

child_nodes ()

源代码

# File lib/prism/node.rb, line 12225
def child_nodes
  [value]
end

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

别名为：deconstruct

comment_targets ()

源代码

# File lib/prism/node.rb, line 12235
def comment_targets
  [name_loc, value, operator_loc] #: Array[Prism::node | Location]
end

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

compact_child_nodes ()

源代码

# File lib/prism/node.rb, line 12230
def compact_child_nodes
  [value]
end

def compact_child_nodes: () -> Array

copy (node_id: self.node_id, location: self.location, flags: self.flags, name: self.name, depth: self.depth, name_loc: self.name_loc, value: self.value, operator_loc: self.operator_loc)

源代码

# File lib/prism/node.rb, line 12240
def copy(node_id: self.node_id, location: self.location, flags: self.flags, name: self.name, depth: self.depth, name_loc: self.name_loc, value: self.value, operator_loc: self.operator_loc)
  LocalVariableWriteNode.new(source, node_id, location, flags, name, depth, name_loc, value, operator_loc)
end

def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?name: Symbol, ?depth: Integer, ?name_loc: Location, ?value: Prism::node, ?operator_loc: Location) -> LocalVariableWriteNode

deconstruct ()

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

别名为：child_nodes

deconstruct_keys (keys)

源代码

# File lib/prism/node.rb, line 12248
def deconstruct_keys(keys)
  { node_id: node_id, location: location, name: name, depth: depth, name_loc: name_loc, value: value, operator_loc: operator_loc }
end

def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, name: Symbol, depth: Integer, name_loc: Location, value: Prism::node, operator_loc: Location }

inspect ()

源代码

# File lib/prism/node.rb, line 12319
def inspect
  InspectVisitor.compose(self)
end

def inspect -> String

name_loc ()

源代码

# File lib/prism/node.rb, line 12272
def name_loc
  location = @name_loc
  return location if location.is_a?(Location)
  @name_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end

变量名称的位置。

foo = :bar
^^^

operator ()

源代码

# File lib/prism/node.rb, line 12314
def operator
  operator_loc.slice
end

def operator: () -> String

operator_loc ()

源代码

# File lib/prism/node.rb, line 12301
def operator_loc
  location = @operator_loc
  return location if location.is_a?(Location)
  @operator_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end

‘=` 运算符的位置。

x = :y
  ^

save_name_loc (repository)

源代码

# File lib/prism/node.rb, line 12280
def save_name_loc(repository)
  repository.enter(node_id, :name_loc)
end

使用给定的已保存源保存 name_loc 位置，以便以后可以检索它。

save_operator_loc (repository)

源代码

# File lib/prism/node.rb, line 12309
def save_operator_loc(repository)
  repository.enter(node_id, :operator_loc)
end

使用给定的已保存源保存 operator_loc 位置，以便以后可以检索它。

type ()

源代码

# File lib/prism/node.rb, line 12324
def type
  :local_variable_write_node
end

返回此节点类型的符号表示形式。请参阅 ‘Node#type`。