class Prism::ConstantPathWriteNode

Represents writing to a constant path.

::Foo = 1

Foo::Bar = 1

::Foo::Bar = 1



attr_reader target: ConstantPathNode


attr_reader value: Prism::node

Public Class Methods

new(source, target, operator_loc, value, location) click to toggle source

def initialize: (ConstantPathNode target, Location operator_loc, Prism::node value, Location location) -> void

# File lib/prism/node.rb, line 5286
def initialize(source, target, operator_loc, value, location)
  @source = source
  @newline = false
  @location = location
  @target = target
  @operator_loc = operator_loc
  @value = value
type() click to toggle source

Similar to type, this method returns a symbol that you can use for splitting on the type of the node without having to do a long === chain. Note that like type, it will still be slower than using == for a single class, but should be faster in a case statement or an array comparison.

def self.type: () -> Symbol

# File lib/prism/node.rb, line 5382
def self.type

Public Instance Methods

accept(visitor) click to toggle source

def accept: (Visitor visitor) -> void

# File lib/prism/node.rb, line 5296
def accept(visitor)
child_nodes() click to toggle source

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

# File lib/prism/node.rb, line 5301
def child_nodes
  [target, value]
Also aliased as: deconstruct
comment_targets() click to toggle source

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

# File lib/prism/node.rb, line 5311
def comment_targets
  [target, operator_loc, value] #: Array[Prism::node | Location]
compact_child_nodes() click to toggle source

def compact_child_nodes: () -> Array

# File lib/prism/node.rb, line 5306
def compact_child_nodes
  [target, value]
copy(target:, operator_loc: self.operator_loc, value: self.value, location: self.location) click to toggle source

def copy: (?target: ConstantPathNode, ?operator_loc: Location, ?value: Prism::node, ?location: Location) -> ConstantPathWriteNode

# File lib/prism/node.rb, line 5316
def copy(target:, operator_loc: self.operator_loc, value: self.value, location: self.location), target, operator_loc, value, location)

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

Alias for: child_nodes
deconstruct_keys(keys) click to toggle source

def deconstruct_keys: (Array keys) -> { target: ConstantPathNode, operator_loc: Location, value: Prism::node, location: Location }

# File lib/prism/node.rb, line 5324
def deconstruct_keys(keys)
  { target: target, operator_loc: operator_loc, value: value, location: location }
inspect(inspector = click to toggle source

def inspect(NodeInspector inspector) -> String

# File lib/prism/node.rb, line 5348
def inspect(inspector =
  inspector << inspector.header(self)
  inspector << "├── target:\n"
  inspector << inspector.child_node(target, "│   ")
  inspector << "├── operator_loc: #{inspector.location(operator_loc)}\n"
  inspector << "└── value:\n"
  inspector << inspector.child_node(value, "    ")
operator() click to toggle source

def operator: () -> String

# File lib/prism/node.rb, line 5343
def operator
operator_loc() click to toggle source

attr_reader operator_loc: Location

# File lib/prism/node.rb, line 5332
def operator_loc
  location = @operator_loc
  return location if location.is_a?(Location)
  @operator_loc =, location >> 32, location & 0xFFFFFFFF)
type() click to toggle source

Sometimes you want to check an instance of a node against a list of classes to see what kind of behavior to perform. Usually this is done by calling ‘[cls1, cls2].include?(node.class)` or putting the node into a case statement and doing `case node; when cls1; when cls2; end`. Both of these approaches are relatively slow because of the constant lookups, method calls, and/or array allocations.

Instead, you can call type, which will return to you a symbol that you can use for comparison. This is faster than the other approaches because it uses a single integer comparison, but also because if you’re on CRuby you can take advantage of the fact that case statements with all symbol keys will use a jump table.

def type: () -> Symbol

# File lib/prism/node.rb, line 5372
def type