Class: Prism::LocalVariableReadNode

Inherits:

PrismNode

• Object
• PrismNode
• Prism::LocalVariableReadNode

Defined in:

lib/prism/node.rb,
ext/prism/api_node.c

Overview

Represents reading a local variable. Note that this requires that a local variable of the same name has already been written to in the same scope, otherwise it is parsed as a method call.

foo
^^^

Instance Attribute Summary

• #depth ⇒ Object readonly

  The number of visible scopes that should be searched to find the origin of this local variable.

• #name ⇒ Object readonly

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

Class Method Summary

• .type ⇒ Object

  Return a symbol representation of this node type.

Instance Method Summary

• #===(other) ⇒ Object

  Implements case-equality for the node.

• #accept(visitor) ⇒ Object

  def accept: (Visitor visitor) -> void.

• #child_nodes ⇒ Object (also: #deconstruct)

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

• #comment_targets ⇒ Object

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

• #compact_child_nodes ⇒ Object

  def compact_child_nodes: () -> Array.

• #copy(node_id: self.node_id, location: self.location, flags: self.flags, name: self.name, depth: self.depth) ⇒ Object

  def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?name: Symbol, ?depth: Integer) -> LocalVariableReadNode.

• #deconstruct_keys(keys) ⇒ Object

  def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, name: Symbol, depth: Integer }.

• #initialize(source, node_id, location, flags, name, depth) ⇒ LocalVariableReadNode constructor

  Initialize a new LocalVariableReadNode node.

• #inspect ⇒ Object

  def inspect -> String.

• #type ⇒ Object

  Return a symbol representation of this node type.

Constructor Details

#initialize(source, node_id, location, flags, name, depth) ⇒ LocalVariableReadNode

Initialize a new LocalVariableReadNode node.

# File 'lib/prism/node.rb', line 12037

def initialize(source, node_id, location, flags, name, depth)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @name = name
  @depth = depth
end

Instance Attribute Details

#depth ⇒ Object (readonly)

The number of visible scopes that should be searched to find the origin of this local variable.

foo = 1; foo # depth 0

bar = 2; tap { bar } # 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).

# File 'lib/prism/node.rb', line 12097

def depth
  @depth
end

#name ⇒ Object (readonly)

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

x      # name `:x`

_Test  # name `:_Test`

Note that this can also be an underscore followed by a number for the default block parameters.

_1     # name `:_1`

# File 'lib/prism/node.rb', line 12088

def name
  @name
end

Class Method Details

.type ⇒ Object

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

# File 'lib/prism/node.rb', line 12110

def self.type
  :local_variable_read_node
end

Instance Method Details

#===(other) ⇒ Object

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

# File 'lib/prism/node.rb', line 12116

def ===(other)
  other.is_a?(LocalVariableReadNode) &&
    (name === other.name) &&
    (depth === other.depth)
end

#accept(visitor) ⇒ Object

def accept: (Visitor visitor) -> void

# File 'lib/prism/node.rb', line 12047

def accept(visitor)
  visitor.visit_local_variable_read_node(self)
end

#child_nodes ⇒ Object Also known as: deconstruct

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

# File 'lib/prism/node.rb', line 12052

def child_nodes
  []
end

#comment_targets ⇒ Object

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

# File 'lib/prism/node.rb', line 12062

def comment_targets
  [] #: Array[Prism::node | Location]
end

#compact_child_nodes ⇒ Object

def compact_child_nodes: () -> Array

# File 'lib/prism/node.rb', line 12057

def compact_child_nodes
  []
end

#copy(node_id: self.node_id, location: self.location, flags: self.flags, name: self.name, depth: self.depth) ⇒ Object

def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?name: Symbol, ?depth: Integer) -> LocalVariableReadNode

# File 'lib/prism/node.rb', line 12067

def copy(node_id: self.node_id, location: self.location, flags: self.flags, name: self.name, depth: self.depth)
  LocalVariableReadNode.new(source, node_id, location, flags, name, depth)
end

#deconstruct_keys(keys) ⇒ Object

def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, name: Symbol, depth: Integer }

# File 'lib/prism/node.rb', line 12075

def deconstruct_keys(keys)
  { node_id: node_id, location: location, name: name, depth: depth }
end

#inspect ⇒ Object

def inspect -> String

# File 'lib/prism/node.rb', line 12100

def inspect
  InspectVisitor.compose(self)
end

#type ⇒ Object

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

# File 'lib/prism/node.rb', line 12105

def type
  :local_variable_read_node
end