class Prism::LocalVariableWriteNode

Represents writing to a local variable.

foo = 1
^^^^^^^

Attributes

depth[R]

The number of semantic scopes we have to traverse to find the declaration of this variable.

foo = 1         # depth 0

tap { foo = 1 } # depth 1

The specific rules for calculating the depth may differ from individual Ruby implementations, as they are not specified by the language. For more information, see [the Prism documentation](github.com/ruby/prism/blob/main/docs/local_variable_depth.md).

name[R]

The name of the local variable, which is an [identifier](github.com/ruby/prism/blob/main/docs/parsing_rules.md#identifiers).

foo = :bar # name `:foo`

abc = 123  # name `:abc`

value[R]

The value to write to the local variable. It can be any [non-void expression](github.com/ruby/prism/blob/main/docs/parsing_rules.md#non-void-expression).

foo = :bar
      ^^^^

abc = 1234
      ^^^^

Note that since the name of a local variable is known before the value is parsed, it is valid for a local variable to appear within the value of its own write.

foo = foo

Public Class Methods

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

Initialize a new LocalVariableWriteNode node.

# File prism/node.rb, line 10954
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

type() click to toggle source

Return a symbol representation of this node type. See ‘Node::type`.

# File prism/node.rb, line 11064
def self.type
  :local_variable_write_node
end

Public Instance Methods

===(other) click to toggle source

Implements case-equality for the node. This is effectively == but without comparing the value of locations. Locations are checked only for presence.

# File prism/node.rb, line 11070
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

accept(visitor) click to toggle source

def accept: (Visitor visitor) -> void

# File prism/node.rb, line 10967
def accept(visitor)
  visitor.visit_local_variable_write_node(self)
end

child_nodes() click to toggle source

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

# File prism/node.rb, line 10972
def child_nodes
  [value]
end

Also aliased as: deconstruct

comment_targets() click to toggle source

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

# File prism/node.rb, line 10982
def comment_targets
  [name_loc, value, operator_loc] #: Array[Prism::node | Location]
end

compact_child_nodes() click to toggle source

def compact_child_nodes: () -> Array

# File prism/node.rb, line 10977
def compact_child_nodes
  [value]
end

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) click to toggle source

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

# File prism/node.rb, line 10987
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

deconstruct()

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

Alias for: child_nodes

deconstruct_keys(keys) click to toggle source

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

# File prism/node.rb, line 10995
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

inspect() click to toggle source

def inspect -> String

# File prism/node.rb, line 11054
def inspect
  InspectVisitor.compose(self)
end

name_loc() click to toggle source

The location of the variable name.

foo = :bar
^^^

# File prism/node.rb, line 11019
def name_loc
  location = @name_loc
  return location if location.is_a?(Location)
  @name_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end

operator() click to toggle source

def operator: () -> String

# File prism/node.rb, line 11049
def operator
  operator_loc.slice
end

operator_loc() click to toggle source

The location of the ‘=` operator.

x = :y
  ^

# File prism/node.rb, line 11042
def operator_loc
  location = @operator_loc
  return location if location.is_a?(Location)
  @operator_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end

type() click to toggle source

Return a symbol representation of this node type. See ‘Node#type`.

# File prism/node.rb, line 11059
def type
  :local_variable_write_node
end