Class: Prism::NilNode

Inherits:
PrismNode
  • Object
show all
Defined in:
lib/prism/node.rb,
ext/prism/api_node.c

Overview

Represents the use of the ‘nil` keyword.

nil
^^^

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source, node_id, location, flags) ⇒ NilNode

Initialize a new NilNode node.



13639
13640
13641
13642
13643
13644
 
# File 'lib/prism/node.rb', line 13639

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

Class Method Details

.type ⇒ Object

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



13690
13691
13692
 
# File 'lib/prism/node.rb', line 13690

def self.type
  :nil_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.



13696
13697
13698
 
# File 'lib/prism/node.rb', line 13696

def ===(other)
  other.is_a?(NilNode)
end

#accept(visitor) ⇒ Object

def accept: (Visitor visitor) -> void



13647
13648
13649
 
# File 'lib/prism/node.rb', line 13647

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

#child_nodes ⇒ Object Also known as: deconstruct

def child_nodes: () -> Array



13652
13653
13654
 
# File 'lib/prism/node.rb', line 13652

def child_nodes
  []
end

#comment_targets ⇒ Object

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



13662
13663
13664
 
# File 'lib/prism/node.rb', line 13662

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

#compact_child_nodes ⇒ Object

def compact_child_nodes: () -> Array



13657
13658
13659
 
# File 'lib/prism/node.rb', line 13657

def compact_child_nodes
  []
end

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

def copy: (?node_id: Integer, ?location: Location, ?flags: Integer) -> NilNode



13667
13668
13669
 
# File 'lib/prism/node.rb', line 13667

def copy(node_id: self.node_id, location: self.location, flags: self.flags)
  NilNode.new(source, node_id, location, flags)
end

#deconstruct_keys(keys) ⇒ Object

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



13675
13676
13677
 
# File 'lib/prism/node.rb', line 13675

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

#inspect ⇒ Object

def inspect -> String



13680
13681
13682
 
# File 'lib/prism/node.rb', line 13680

def inspect
  InspectVisitor.compose(self)
end

#type ⇒ Object

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



13685
13686
13687
 
# File 'lib/prism/node.rb', line 13685

def type
  :nil_node
end