123456789_123456789_123456789_123456789_123456789_

Class: Prism::HashPatternNode

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 hash pattern in pattern matching.

foo => { a: 1, b: 2 }
       ^^^^^^^^^^^^^^

foo => { a: 1, b: 2, **c }
       ^^^^^^^^^^^^^^^^^^^

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(source, node_id, location, flags, constant, elements, rest, opening_loc, closing_loc) ⇒ HashPatternNode

Initialize a new HashPatternNode node.

[ GitHub ] 

  


# File 'lib/prism/node.rb', line 7175



def initialize(source, node_id, location, flags, constant, elements, rest, opening_loc, closing_loc)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @constant = constant
  @elements = elements
  @rest = rest
  @opening_loc = opening_loc
  @closing_loc = closing_loc
end


  







Class Method Details



  

    .type  
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7277



def self.type
  :hash_pattern_node
end


  







Instance Attribute Details



  

    #constant   (readonly)
  



  

    
attr_reader constant: Prism.node?

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7225



attr_reader :constant


  








  

    #elements   (readonly)
  



  

    
attr_reader elements: Array

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7227



attr_reader :elements


  








  

    #rest   (readonly)
  



  

    
attr_reader rest: AssocSplatNode | NoKeywordsParameterNode | nil

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7229



attr_reader :rest


  







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 7283



def ===(other)
  other.is_a?(HashPatternNode) &&
    (constant === other.constant) &&
    (elements.length == other.elements.length) &&
    elements.zip(other.elements).all? { |left, right| left === right } &&
    (rest === other.rest) &&
    (opening_loc.nil? == other.opening_loc.nil?) &&
    (closing_loc.nil? == other.closing_loc.nil?)
end


  








  

    #accept(visitor)  
  



  

    
def accept: (Visitor visitor) -> void

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7188



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


  








  

    #child_nodes  
    Also known as: #deconstruct
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7193



def child_nodes
  [constant, *elements, rest]
end


  








  

    #closing  
  



  

    
def closing: () -> String?

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7262



def closing
  closing_loc&.slice
end


  








  

    #closing_loc  
  



  

    
attr_reader closing_loc: Location?

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7244



def closing_loc
  location = @closing_loc
  case location
  when nil
    nil
  when Location
    location
  else
    @closing_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
  end
end


  








  

    #comment_targets  
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7207



def comment_targets
  [*constant, *elements, *rest, *opening_loc, *closing_loc] #: Array[Prism::node | Location]
end


  








  

    #compact_child_nodes  
  



  

    
def compact_child_nodes: () -> Array

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7198



def compact_child_nodes
  compact = [] #: Array[Prism::node]
  compact << constant if constant
  compact.concat(elements)
  compact << rest if rest
  compact
end


  








  

    #copy(node_id: self.node_id, location: self.location, flags: self.flags, constant: self.constant, elements: self.elements, rest: self.rest, opening_loc: self.opening_loc, closing_loc: self.closing_loc)  
  



  

    
def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?constant: Prism.node?, ?elements: Array, ?rest: AssocSplatNode | NoKeywordsParameterNode | nil, ?opening_loc: Location?, ?closing_loc: Location?) -> HashPatternNode

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7212



def copy(node_id: self.node_id, location: self.location, flags: self.flags, constant: self.constant, elements: self.elements, rest: self.rest, opening_loc: self.opening_loc, closing_loc: self.closing_loc)
  HashPatternNode.new(source, node_id, location, flags, constant, elements, rest, opening_loc, closing_loc)
end


  








  

    #deconstruct  
  



  

    
Alias for #child_nodes.

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7217



alias deconstruct child_nodes


  








  

    #deconstruct_keys(keys)  
  



  

    
def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, constant: Prism.node?, elements: Array, rest: AssocSplatNode | NoKeywordsParameterNode | nil, opening_loc: Location?, closing_loc: Location? }

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7220



def deconstruct_keys(keys)
  { node_id: node_id, location: location, constant: constant, elements: elements, rest: rest, opening_loc: opening_loc, closing_loc: closing_loc }
end


  








  

    #inspect  
  



  

    
def inspect -> String

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7267



def inspect
  InspectVisitor.compose(self)
end


  








  

    #opening  
  



  

    
def opening: () -> String?

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7257



def opening
  opening_loc&.slice
end


  








  

    #opening_loc  
  



  

    
attr_reader opening_loc: Location?

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7231



def opening_loc
  location = @opening_loc
  case location
  when nil
    nil
  when Location
    location
  else
    @opening_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
  end
end


  








  

    #type  
  



  

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

  



  [ GitHub ]


  

  


# File 'lib/prism/node.rb', line 7272



def type
  :hash_pattern_node
end