class Prism::ConstantPathAndWriteNode
Represents the use of the ‘&&=` operator for assignment to a constant path.
Parent::Child &&= value ^^^^^^^^^^^^^^^^^^^^^^^
Attributes
attr_reader target: ConstantPathNode
attr_reader value: Prism::node
Public Class Methods
def initialize: (ConstantPathNode
target, Location
operator_loc
, Prism::node value, Location
location) -> void
# File lib/prism/node.rb, line 4731 def initialize(source, target, operator_loc, value, location) @source = source @newline = false @location = location @target = target @operator_loc = operator_loc @value = value end
Similar to type
, this method returns a symbol that you can use for splitting on the type of the node without having to do a long === chain. Note that like type
, it will still be slower than using == for a single class, but should be faster in a case statement or an array comparison.
def self.type: () -> Symbol
# File lib/prism/node.rb, line 4827 def self.type :constant_path_and_write_node end
Public Instance Methods
def accept: (Visitor
visitor) -> void
# File lib/prism/node.rb, line 4741 def accept(visitor) visitor.visit_constant_path_and_write_node(self) end
def child_nodes
: () -> Array[nil | Node]
# File lib/prism/node.rb, line 4746 def child_nodes [target, value] end
def comment_targets
: () -> Array[Node | Location]
# File lib/prism/node.rb, line 4756 def comment_targets [target, operator_loc, value] #: Array[Prism::node | Location] end
def compact_child_nodes
: () -> Array
# File lib/prism/node.rb, line 4751 def compact_child_nodes [target, value] end
def copy: (?target: ConstantPathNode
, ?operator_loc: Location
, ?value: Prism::node, ?location: Location
) -> ConstantPathAndWriteNode
# File lib/prism/node.rb, line 4761 def copy(target: self.target, operator_loc: self.operator_loc, value: self.value, location: self.location) ConstantPathAndWriteNode.new(source, target, operator_loc, value, location) end
def deconstruct_keys
: (Array keys) -> { target: ConstantPathNode
, operator_loc
: Location
, value: Prism::node, location: Location
}
# File lib/prism/node.rb, line 4769 def deconstruct_keys(keys) { target: target, operator_loc: operator_loc, value: value, location: location } end
def inspect(NodeInspector inspector) -> String
# File lib/prism/node.rb, line 4793 def inspect(inspector = NodeInspector.new) inspector << inspector.header(self) inspector << "├── target:\n" inspector << inspector.child_node(target, "│ ") inspector << "├── operator_loc: #{inspector.location(operator_loc)}\n" inspector << "└── value:\n" inspector << inspector.child_node(value, " ") inspector.to_str end
def operator: () -> String
# File lib/prism/node.rb, line 4788 def operator operator_loc.slice end
attr_reader operator_loc
: Location
# File lib/prism/node.rb, line 4777 def operator_loc location = @operator_loc return location if location.is_a?(Location) @operator_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end
Sometimes you want to check an instance of a node against a list of classes to see what kind of behavior to perform. Usually this is done by calling ‘[cls1, cls2].include?(node.class)` or putting the node into a case statement and doing `case node; when cls1; when cls2; end`. Both of these approaches are relatively slow because of the constant lookups, method calls, and/or array allocations.
Instead, you can call type
, which will return to you a symbol that you can use for comparison. This is faster than the other approaches because it uses a single integer comparison, but also because if you’re on CRuby you can take advantage of the fact that case statements with all symbol keys will use a jump table.
def type: () -> Symbol
# File lib/prism/node.rb, line 4817 def type :constant_path_and_write_node end