module RuboCop::AST::ParameterizedNode::RestArguments

A specialized ‘ParameterizedNode`. Requires implementing `first_argument_index` Implements `arguments` as `children` and optimizes other calls

Constants

EMPTY_ARGUMENTS

Public Instance Methods

arguments() click to toggle source

@return [Array<Node>] arguments, if any

# File lib/rubocop/ast/node/mixin/parameterized_node.rb, line 89
def arguments
  if arguments?
    children.drop(first_argument_index).freeze
  else
    # Skip unneeded Array allocation.
    EMPTY_ARGUMENTS
  end
end

arguments?() click to toggle source

Checks whether this node has any arguments.

@return [Boolean] whether this node has any arguments

# File lib/rubocop/ast/node/mixin/parameterized_node.rb, line 119
def arguments?
  children.size > first_argument_index
end

first_argument() click to toggle source

A shorthand for getting the first argument of the node. Equivalent to ‘arguments.first`.

@return [Node, nil] the first argument of the node,

or `nil` if there are no arguments

# File lib/rubocop/ast/node/mixin/parameterized_node.rb, line 103
def first_argument
  children[first_argument_index]
end

last_argument() click to toggle source

A shorthand for getting the last argument of the node. Equivalent to ‘arguments.last`.

@return [Node, nil] the last argument of the node,

or `nil` if there are no arguments

# File lib/rubocop/ast/node/mixin/parameterized_node.rb, line 112
def last_argument
  children[-1] if arguments?
end