class Prism::RescueNode

表示一个 rescue 语句。

begin
rescue Foo, *splat, Bar => ex
  foo
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
end

‘Foo, *splat, Bar` 位于 `exceptions` 字段中。 `ex` 位于 `reference` 字段中。

属性

exceptions [R]

attr_reader exceptions: Array

reference [R]

statements [R]

attr_reader statements: StatementsNode?

subsequent [R]

attr_reader subsequent: RescueNode?

公共类方法

new (source, node_id, location, flags, keyword_loc, exceptions, operator_loc, reference, statements, subsequent)

源代码

# File lib/prism/node.rb, line 15712
def initialize(source, node_id, location, flags, keyword_loc, exceptions, operator_loc, reference, statements, subsequent)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @keyword_loc = keyword_loc
  @exceptions = exceptions
  @operator_loc = operator_loc
  @reference = reference
  @statements = statements
  @subsequent = subsequent
end

初始化一个新的 RescueNode 节点。

type ()

源代码

# File lib/prism/node.rb, line 15828
def self.type
  :rescue_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 15834
def ===(other)
  other.is_a?(RescueNode) &&
    (keyword_loc.nil? == other.keyword_loc.nil?) &&
    (exceptions.length == other.exceptions.length) &&
    exceptions.zip(other.exceptions).all? { |left, right| left === right } &&
    (operator_loc.nil? == other.operator_loc.nil?) &&
    (reference === other.reference) &&
    (statements === other.statements) &&
    (subsequent === other.subsequent)
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 15726
def accept(visitor)
  visitor.visit_rescue_node(self)
end

def accept: (Visitor visitor) -> void

child_nodes ()

源代码

# File lib/prism/node.rb, line 15731
def child_nodes
  [*exceptions, reference, statements, subsequent]
end

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

也别名为：deconstruct

comment_targets ()

源代码

# File lib/prism/node.rb, line 15746
def comment_targets
  [keyword_loc, *exceptions, *operator_loc, *reference, *statements, *subsequent] #: Array[Prism::node | Location]
end

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

compact_child_nodes ()

源代码

# File lib/prism/node.rb, line 15736
def compact_child_nodes
  compact = [] #: Array[Prism::node]
  compact.concat(exceptions)
  compact << reference if reference
  compact << statements if statements
  compact << subsequent if subsequent
  compact
end

def compact_child_nodes: () -> Array

consequent ()

源代码

# File lib/prism/node_ext.rb, line 494
def consequent
  deprecated("subsequent")
  subsequent
end

返回 rescue 节点的后续 rescue 子句。此方法已弃用，推荐使用 subsequent。

copy (node_id: self.node_id, location: self.location, flags: self.flags, keyword_loc: self.keyword_loc, exceptions: self.exceptions, operator_loc: self.operator_loc, reference: self.reference, statements: self.statements, subsequent: self.subsequent)

源代码

# File lib/prism/node.rb, line 15751
def copy(node_id: self.node_id, location: self.location, flags: self.flags, keyword_loc: self.keyword_loc, exceptions: self.exceptions, operator_loc: self.operator_loc, reference: self.reference, statements: self.statements, subsequent: self.subsequent)
  RescueNode.new(source, node_id, location, flags, keyword_loc, exceptions, operator_loc, reference, statements, subsequent)
end

deconstruct ()

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

别名为：child_nodes

deconstruct_keys (keys)

源代码

# File lib/prism/node.rb, line 15759
def deconstruct_keys(keys)
  { node_id: node_id, location: location, keyword_loc: keyword_loc, exceptions: exceptions, operator_loc: operator_loc, reference: reference, statements: statements, subsequent: subsequent }
end

def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, keyword_loc: Location, exceptions: Array, operator_loc: Location?, reference: LocalVariableTargetNode | InstanceVariableTargetNode | ClassVariableTargetNode | GlobalVariableTargetNode | ConstantTargetNode | ConstantPathTargetNode | CallTargetNode | IndexTargetNode | BackReferenceReadNode | NumberedReferenceReadNode | MissingNode | nil, statements: StatementsNode?, subsequent: RescueNode? }

inspect ()

源代码

# File lib/prism/node.rb, line 15818
def inspect
  InspectVisitor.compose(self)
end

def inspect -> String

keyword ()

源代码

# File lib/prism/node.rb, line 15808
def keyword
  keyword_loc.slice
end

def keyword: () -> String

keyword_loc ()

源代码

# File lib/prism/node.rb, line 15764
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

operator ()

源代码

# File lib/prism/node.rb, line 15813
def operator
  operator_loc&.slice
end

def operator: () -> String?

operator_loc ()

源代码

# File lib/prism/node.rb, line 15780
def operator_loc
  location = @operator_loc
  case location
  when nil
    nil
  when Location
    location
  else
    @operator_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
  end
end

attr_reader operator_loc: Location?

save_keyword_loc (repository)

源代码

# File lib/prism/node.rb, line 15772
def save_keyword_loc(repository)
  repository.enter(node_id, :keyword_loc)
end

使用给定的已保存源保存 keyword_loc 位置，以便稍后检索。

save_operator_loc (repository)

源代码

# File lib/prism/node.rb, line 15794
def save_operator_loc(repository)
  repository.enter(node_id, :operator_loc) unless @operator_loc.nil?
end

使用给定的已保存源保存 operator_loc 位置，以便稍后检索。

type ()

源代码

# File lib/prism/node.rb, line 15823
def type
  :rescue_node
end

返回此节点类型的符号表示。请参阅“Node#type”。