class Prism::BlockParametersNode

Represents a block’s parameters declaration.

-> (a, b = 1; local) { }
   ^^^^^^^^^^^^^^^^^

foo do |a, b = 1; local|
       ^^^^^^^^^^^^^^^^^
end

Attributes

locals[R]

attr_reader locals: Array

parameters[R]

attr_reader parameters: ParametersNode?

Public Class Methods

new(source, node_id, location, flags, parameters, locals, opening_loc, closing_loc) click to toggle source

Initialize a new BlockParametersNode node.

# File lib/prism/node.rb, line 1774
def initialize(source, node_id, location, flags, parameters, locals, opening_loc, closing_loc)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @parameters = parameters
  @locals = locals
  @opening_loc = opening_loc
  @closing_loc = closing_loc
end

type() click to toggle source

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

# File lib/prism/node.rb, line 1872
def self.type
  :block_parameters_node
end

Public Instance Methods

===(other) click to toggle source

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

# File lib/prism/node.rb, line 1878
def ===(other)
  other.is_a?(BlockParametersNode) &&
    (parameters === other.parameters) &&
    (locals.length == other.locals.length) &&
    locals.zip(other.locals).all? { |left, right| left === right } &&
    (opening_loc.nil? == other.opening_loc.nil?) &&
    (closing_loc.nil? == other.closing_loc.nil?)
end

accept(visitor) click to toggle source

def accept: (Visitor visitor) -> void

# File lib/prism/node.rb, line 1786
def accept(visitor)
  visitor.visit_block_parameters_node(self)
end

child_nodes() click to toggle source

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

# File lib/prism/node.rb, line 1791
def child_nodes
  [parameters, *locals]
end

Also aliased as: deconstruct

closing() click to toggle source

def closing: () -> String?

# File lib/prism/node.rb, line 1857
def closing
  closing_loc&.slice
end

closing_loc() click to toggle source

attr_reader closing_loc: Location?

# File lib/prism/node.rb, line 1839
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() click to toggle source

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

# File lib/prism/node.rb, line 1804
def comment_targets
  [*parameters, *locals, *opening_loc, *closing_loc] #: Array[Prism::node | Location]
end

compact_child_nodes() click to toggle source

def compact_child_nodes: () -> Array

# File lib/prism/node.rb, line 1796
def compact_child_nodes
  compact = [] #: Array[Prism::node]
  compact << parameters if parameters
  compact.concat(locals)
  compact
end

copy(node_id: self.node_id, location: self.location, flags: self.flags, parameters: self.parameters, locals: self.locals, opening_loc: self.opening_loc, closing_loc: self.closing_loc) click to toggle source

def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?parameters: ParametersNode?, ?locals: Array, ?opening_loc: Location?, ?closing_loc: Location?) -> BlockParametersNode

# File lib/prism/node.rb, line 1809
def copy(node_id: self.node_id, location: self.location, flags: self.flags, parameters: self.parameters, locals: self.locals, opening_loc: self.opening_loc, closing_loc: self.closing_loc)
  BlockParametersNode.new(source, node_id, location, flags, parameters, locals, opening_loc, closing_loc)
end

deconstruct()

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

Alias for: child_nodes

deconstruct_keys(keys) click to toggle source

def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, parameters: ParametersNode?, locals: Array, opening_loc: Location?, closing_loc: Location? }

# File lib/prism/node.rb, line 1817
def deconstruct_keys(keys)
  { node_id: node_id, location: location, parameters: parameters, locals: locals, opening_loc: opening_loc, closing_loc: closing_loc }
end

inspect() click to toggle source

def inspect -> String

# File lib/prism/node.rb, line 1862
def inspect
  InspectVisitor.compose(self)
end

opening() click to toggle source

def opening: () -> String?

# File lib/prism/node.rb, line 1852
def opening
  opening_loc&.slice
end

opening_loc() click to toggle source

attr_reader opening_loc: Location?

# File lib/prism/node.rb, line 1826
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() click to toggle source

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

# File lib/prism/node.rb, line 1867
def type
  :block_parameters_node
end