class Prism::RescueNode

表示一个 rescue 语句。

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

Foo, *splat, Bar 包含在 exceptions 字段中。ex 包含在 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?

Public Class Methods

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

Source

# File lib/prism/node.rb, line 15926
def initialize(source, node_id, location, flags, keyword_loc, exceptions, operator_loc, reference, then_keyword_loc, statements, subsequent)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @keyword_loc = keyword_loc
  @exceptions = exceptions
  @operator_loc = operator_loc
  @reference = reference
  @then_keyword_loc = then_keyword_loc
  @statements = statements
  @subsequent = subsequent
end

初始化一个新的 RescueNode 节点。

type ()

Source

# File lib/prism/node.rb, line 16067
def self.type
  :rescue_node
end

返回此节点类型的符号表示。参见 Node::type。

Public Instance Methods

=== (other)

Source

# File lib/prism/node.rb, line 16073
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) &&
    (then_keyword_loc.nil? == other.then_keyword_loc.nil?) &&
    (statements === other.statements) &&
    (subsequent === other.subsequent)
end

实现节点的相等性判断。这实际上是 ==，但不比较 location 的值。仅检查 location 是否存在。

accept (visitor)

Source

# File lib/prism/node.rb, line 15941
def accept(visitor)
  visitor.visit_rescue_node(self)
end

def accept: (Visitor visitor) -> void

child_nodes ()

Source

# File lib/prism/node.rb, line 15946
def child_nodes
  [*exceptions, reference, statements, subsequent]
end

def child_nodes: () -> Array

也别名为： deconstruct

comment_targets ()

Source

# File lib/prism/node.rb, line 15961
def comment_targets
  [keyword_loc, *exceptions, *operator_loc, *reference, *then_keyword_loc, *statements, *subsequent] #: Array[Prism::node | Location]
end

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

compact_child_nodes ()

Source

# File lib/prism/node.rb, line 15951
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 ()

Source

# File lib/prism/node_ext.rb, line 497
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, then_keyword_loc: self.then_keyword_loc, statements: self.statements, subsequent: self.subsequent)

Source

# File lib/prism/node.rb, line 15966
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, then_keyword_loc: self.then_keyword_loc, statements: self.statements, subsequent: self.subsequent)
  RescueNode.new(source, node_id, location, flags, keyword_loc, exceptions, operator_loc, reference, then_keyword_loc, statements, subsequent)
end

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

deconstruct ()

def deconstruct: () -> Array

别名： child_nodes

deconstruct_keys (keys)

Source

# File lib/prism/node.rb, line 15974
def deconstruct_keys(keys)
  { node_id: node_id, location: location, keyword_loc: keyword_loc, exceptions: exceptions, operator_loc: operator_loc, reference: reference, then_keyword_loc: then_keyword_loc, 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, then_keyword_loc: Location?, statements: StatementsNode?, subsequent: RescueNode? }

inspect ()

Source

# File lib/prism/node.rb, line 16057
def inspect
  InspectVisitor.compose(self)
end

def inspect -> String

keyword ()

Source

# File lib/prism/node.rb, line 16042
def keyword
  keyword_loc.slice
end

def keyword: () -> String

keyword_loc ()

Source

# File lib/prism/node.rb, line 15979
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 ()

Source

# File lib/prism/node.rb, line 16047
def operator
  operator_loc&.slice
end

def operator: () -> String?

operator_loc ()

Source

# File lib/prism/node.rb, line 15995
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)

Source

# File lib/prism/node.rb, line 15987
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)

Source

# File lib/prism/node.rb, line 16009
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。

save_then_keyword_loc (repository)

Source

# File lib/prism/node.rb, line 16031
def save_then_keyword_loc(repository)
  repository.enter(node_id, :then_keyword_loc) unless @then_keyword_loc.nil?
end

使用给定的已保存源保存 then_keyword_loc 位置，以便稍后检索。

then_keyword ()

Source

# File lib/prism/node.rb, line 16052
def then_keyword
  then_keyword_loc&.slice
end

def then_keyword: () -> String?

then_keyword_loc ()

Source

# File lib/prism/node.rb, line 16017
def then_keyword_loc
  location = @then_keyword_loc
  case location
  when nil
    nil
  when Location
    location
  else
    @then_keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
  end
end

attr_reader then_keyword_loc: Location?

type ()

Source

# File lib/prism/node.rb, line 16062
def type
  :rescue_node
end

返回此节点类型的符号表示。参见 Node#type。