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Class: Prism::UndefNode

Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, PrismNode
Instance Chain:
self, PrismNode
Inherits: PrismNode
Defined in: lib/prism/node.rb,
ext/prism/api_node.c

Overview

Represents the use of the undef keyword.

undef :foo, :bar, :baz
^^^^^^^^^^^^^^^^^^^^^^

Class Method Summary

Instance Attribute Summary

  • #names readonly

    attr_reader names: Array[SymbolNode | InterpolatedSymbolNode].

Instance Method Summary

Constructor Details

.new(source, node_id, location, flags, names, keyword_loc) ⇒ UndefNode

Initialize a new UndefNode node.

[ GitHub ] 

  


# File 'lib/prism/node.rb', line 15506



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


  







Class Method Details



  

    .type  
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15573



def self.type
  :undef_node
end


  







Instance Attribute Details



  

    #names   (readonly)
  



  

    
attr_reader names: Array[SymbolNode | InterpolatedSymbolNode]

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15549



attr_reader :names


  







Instance Method Details



  

    #===(other)  
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15579



def ===(other)
  other.is_a?(UndefNode) &&
    (names.length == other.names.length) &&
    names.zip(other.names).all? { |left, right| left === right } &&
    (keyword_loc.nil? == other.keyword_loc.nil?)
end


  








  

    #accept(visitor)  
  



  

    
def accept: (Visitor visitor) -> void

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15516



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


  








  

    #child_nodes  
    Also known as: #deconstruct
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15521



def child_nodes
  [*names]
end


  








  

    #comment_targets  
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15531



def comment_targets
  [*names, keyword_loc] #: Array[Prism::node | Location]
end


  








  

    #compact_child_nodes  
  



  

    
def compact_child_nodes: () -> Array

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15526



def compact_child_nodes
  [*names]
end


  








  

    #copy(node_id: self.node_id, location: self.location, flags: self.flags, names: self.names, keyword_loc: self.keyword_loc)  
  



  

    
def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?names: Array[SymbolNode | InterpolatedSymbolNode], ?keyword_loc: Location) -> UndefNode

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15536



def copy(node_id: self.node_id, location: self.location, flags: self.flags, names: self.names, keyword_loc: self.keyword_loc)
  UndefNode.new(source, node_id, location, flags, names, keyword_loc)
end


  








  

    #deconstruct  
  



  

    
Alias for #child_nodes.

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15541



alias deconstruct child_nodes


  








  

    #deconstruct_keys(keys)  
  



  

    
def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, names: Array[SymbolNode | InterpolatedSymbolNode], keyword_loc: Location }

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15544



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


  








  

    #inspect  
  



  

    
def inspect -> String

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15563



def inspect
  InspectVisitor.compose(self)
end


  








  

    #keyword  
  



  

    
def keyword: () -> String

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15558



def keyword
  keyword_loc.slice
end


  








  

    #keyword_loc  
  



  

    
attr_reader keyword_loc: Location

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15551



def keyword_loc
  location = @keyword_loc
  return location if location.is_a?(Location)
  @keyword_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end


  








  

    #type  
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 15568



def type
  :undef_node
end