class Prism::SingletonClassNode

Represents a singleton class declaration involving the class keyword.

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

Public Class Methods

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

(Source source, Integer node_id, Location location, Integer flags, Array[Symbol] locals, Location class_keyword_loc, Location operator_loc, Prism::node expression, (StatementsNode | BeginNode)? body, Location end_keyword_loc) → void

Source

# File lib/prism/node.rb, line 29608
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

Initialize a new SingletonClassNode node.

Public Instance Methods

body → StatementsNode | BeginNode | nil

() → (StatementsNode | BeginNode)?

Source

# File lib/prism/node.rb, line 29798
def body
  @body
end

Returns the body attribute.

expression → Node

() → Prism::node

Source

# File lib/prism/node.rb, line 29788
def expression
  @expression
end

Returns the expression attribute.

locals → Array[Symbol]

() → Array[Symbol]

Source

# File lib/prism/node.rb, line 29734
def locals
  @locals
end

Returns the locals attribute.

Locations

Public Instance Methods

class_keyword_loc → Location

() → Location

Source

# File lib/prism/node.rb, line 29745
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

Returns the Location represented by class_keyword_loc.

end_keyword_loc → Location

() → Location

Source

# File lib/prism/node.rb, line 29809
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

Returns the Location represented by end_keyword_loc.

operator_loc → Location

() → Location

Source

# File lib/prism/node.rb, line 29767
def operator_loc
  location = @operator_loc
  return location if location.is_a?(Location)
  @operator_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end

Returns the Location represented by operator_loc.

Node Interface

These methods are present on all subclasses of Node. Read the node interface docs for more information.

Public Class Methods

type ()

() → :singleton_class_node

Source

# File lib/prism/node.rb, line 29717
def self.type
  :singleton_class_node
end

See Node.type.

Public Instance Methods

accept (visitor)

(_Visitor visitor) → untyped

Source

# File lib/prism/node.rb, line 29635
def accept(visitor)
  visitor.visit_singleton_class_node(self)
end

See Node.accept.

child_nodes ()

() → Array[node?]

Source

# File lib/prism/node.rb, line 29642
def child_nodes
  [expression, body]
end

See Node.child_nodes.

Also aliased as: deconstruct

comment_targets ()

() → Array[node | Location]

Source

# File lib/prism/node.rb, line 29670
def comment_targets
  [class_keyword_loc, operator_loc, expression, *body, end_keyword_loc] #: Array[Prism::node | Location]
end

See Node.comment_targets.

compact_child_nodes ()

() → Array[node]

Source

# File lib/prism/node.rb, line 29660
def compact_child_nodes
  compact = [] #: Array[Prism::node]
  compact << expression
  if (body = self.body); compact << body; end
  compact
end

See Node.compact_child_nodes.

copy(**fields) → SingletonClassNode

(?node_id: Integer, ?location: Location, ?flags: Integer, ?locals: Array[Symbol], ?class_keyword_loc: Location, ?operator_loc: Location, ?expression: Prism::node, ?body: (StatementsNode | BeginNode)?, ?end_keyword_loc: Location) → SingletonClassNode

Source

# File lib/prism/node.rb, line 29680
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

Creates a copy of self with the given fields, using self as the template.

deconstruct ()

() → Array[node?]

Alias for: child_nodes

each_child_node () { |expression| ... }

() → Enumerator[node, void]
() { (node) → void } → void

Source

# File lib/prism/node.rb, line 29650
def each_child_node(&blk)
  return to_enum(:each_child_node) unless block_given?

  yield expression
  if (body = self.body); yield body; end
end

See Node.each_child_node.

type ()

() → :singleton_class_node

Source

# File lib/prism/node.rb, line 29710
def type
  :singleton_class_node
end

See Node#type.

Repository

Methods related to Relocation.

Public Instance Methods

save_class_keyword_loc (repository)

(_Repository repository) → Relocation::Entry

Source

# File lib/prism/node.rb, line 29756
def save_class_keyword_loc(repository)
  repository.enter(node_id, :class_keyword_loc)
end

Save the class_keyword_loc location using the given saved source so that it can be retrieved later.

save_end_keyword_loc (repository)

(_Repository repository) → Relocation::Entry

Source

# File lib/prism/node.rb, line 29820
def save_end_keyword_loc(repository)
  repository.enter(node_id, :end_keyword_loc)
end

Save the end_keyword_loc location using the given saved source so that it can be retrieved later.

save_operator_loc (repository)

(_Repository repository) → Relocation::Entry

Source

# File lib/prism/node.rb, line 29778
def save_operator_loc(repository)
  repository.enter(node_id, :operator_loc)
end

Save the operator_loc location using the given saved source so that it can be retrieved later.

Slicing

Public Instance Methods

class_keyword → String

() → String

Source

# File lib/prism/node.rb, line 29832
def class_keyword
  class_keyword_loc.slice
end

Slice the location of class_keyword_loc from the source.

end_keyword → String

() → String

Source

# File lib/prism/node.rb, line 29852
def end_keyword
  end_keyword_loc.slice
end

Slice the location of end_keyword_loc from the source.

operator → String

() → String

Source

# File lib/prism/node.rb, line 29842
def operator
  operator_loc.slice
end

Slice the location of operator_loc from the source.