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Class: Prism::SingletonClassNode

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

Overview

Represents a singleton class declaration involving the class keyword.

class << self end
^^^^^^^^^^^^^^^^^

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(source, node_id, location, flags, locals, class_keyword_loc, operator_loc, expression, body, end_keyword_loc) ⇒ SingletonClassNode

Initialize a new SingletonClassNode node.

[ GitHub ] 

  


# File 'lib/prism/node.rb', line 14482



def initialize(source, node_id, location, flags, locals, class_keyword_loc, operator_loc, expression, body, end_keyword_loc)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @locals = locals
  @class_keyword_loc = class_keyword_loc
  @operator_loc = operator_loc
  @expression = expression
  @body = body
  @end_keyword_loc = end_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 14584



def self.type
  :singleton_class_node
end


  







Instance Attribute Details



  

    #body   (readonly)
  



  

    
attr_reader body: Prism.node?

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14550



attr_reader :body


  








  

    #expression   (readonly)
  



  

    
attr_reader expression: Prism.node

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14548



attr_reader :expression


  








  

    #locals   (readonly)
  



  

    
attr_reader locals: Array

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14532



attr_reader :locals


  







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 14590



def ===(other)
  other.is_a?(SingletonClassNode) &&
    (locals.length == other.locals.length) &&
    locals.zip(other.locals).all? { |left, right| left === right } &&
    (class_keyword_loc.nil? == other.class_keyword_loc.nil?) &&
    (operator_loc.nil? == other.operator_loc.nil?) &&
    (expression === other.expression) &&
    (body === other.body) &&
    (end_keyword_loc.nil? == other.end_keyword_loc.nil?)
end


  








  

    #accept(visitor)  
  



  

    
def accept: (Visitor visitor) -> void

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14496



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


  








  

    #child_nodes  
    Also known as: #deconstruct
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14501



def child_nodes
  [expression, body]
end


  








  

    #class_keyword  
  



  

    
def class_keyword: () -> String

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14559



def class_keyword
  class_keyword_loc.slice
end


  








  

    #class_keyword_loc  
  



  

    
attr_reader class_keyword_loc: Location

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14534



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


  








  

    #comment_targets  
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14514



def comment_targets
  [class_keyword_loc, operator_loc, expression, *body, end_keyword_loc] #: Array[Prism::node | Location]
end


  








  

    #compact_child_nodes  
  



  

    
def compact_child_nodes: () -> Array

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14506



def compact_child_nodes
  compact = [] #: Array[Prism::node]
  compact << expression
  compact << body if body
  compact
end


  








  

    #copy(node_id: self.node_id, location: self.location, flags: self.flags, locals: self.locals, class_keyword_loc: self.class_keyword_loc, operator_loc: self.operator_loc, expression: self.expression, body: self.body, end_keyword_loc: self.end_keyword_loc)  
  



  

    
def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?locals: Array, ?class_keyword_loc: Location, ?operator_loc: Location, ?expression: Prism.node, ?body: Prism.node?, ?end_keyword_loc: Location) -> SingletonClassNode

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14519



def copy(node_id: self.node_id, location: self.location, flags: self.flags, locals: self.locals, class_keyword_loc: self.class_keyword_loc, operator_loc: self.operator_loc, expression: self.expression, body: self.body, end_keyword_loc: self.end_keyword_loc)
  SingletonClassNode.new(source, node_id, location, flags, locals, class_keyword_loc, operator_loc, expression, body, end_keyword_loc)
end


  








  

    #deconstruct  
  



  

    
Alias for #child_nodes.

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14524



alias deconstruct child_nodes


  








  

    #deconstruct_keys(keys)  
  



  

    
def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, locals: Array, class_keyword_loc: Location, operator_loc: Location, expression: Prism.node, body: Prism.node?, end_keyword_loc: Location }

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14527



def deconstruct_keys(keys)
  { node_id: node_id, location: location, locals: locals, class_keyword_loc: class_keyword_loc, operator_loc: operator_loc, expression: expression, body: body, end_keyword_loc: end_keyword_loc }
end


  








  

    #end_keyword  
  



  

    
def end_keyword: () -> String

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14569



def end_keyword
  end_keyword_loc.slice
end


  








  

    #end_keyword_loc  
  



  

    
attr_reader end_keyword_loc: Location

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14552



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


  








  

    #inspect  
  



  

    
def inspect -> String

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14574



def inspect
  InspectVisitor.compose(self)
end


  








  

    #operator  
  



  

    
def operator: () -> String

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14564



def operator
  operator_loc.slice
end


  








  

    #operator_loc  
  



  

    
attr_reader operator_loc: Location

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 14541



def operator_loc
  location = @operator_loc
  return location if location.is_a?(Location)
  @operator_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 14579



def type
  :singleton_class_node
end