Represents the use of the ‘..` or `…` operators to create flip flops.
baz if foo .. bar
^^^^^^^^^^
attr_reader operator_loc: Location
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6249
def initialize(flags, left, right, operator_loc, location)
@flags = flags
@left = left
@right = right
@operator_loc = operator_loc
@location = location
end
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6354
def self.type
:flip_flop_node
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 tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6258
def accept(visitor)
visitor.visit_flip_flop_node(self)
end
def accept: (visitor: Visitor) -> void
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6263
def child_nodes
[left, right]
end
def child_nodes: () -> Array[nil | Node]
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6276
def comment_targets
[*left, *right, operator_loc]
end
def comment_targets: () -> Array[Node | Location]
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6268
def compact_child_nodes
compact = []
compact << left if left
compact << right if right
compact
end
def compact_child_nodes: () -> Array
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6281
def copy(**params)
FlipFlopNode.new(
params.fetch(:flags) { flags },
params.fetch(:left) { left },
params.fetch(:right) { right },
params.fetch(:operator_loc) { operator_loc },
params.fetch(:location) { location },
)
end
def copy: (**params) -> FlipFlopNode
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6295
def deconstruct_keys(keys)
{ flags: flags, left: left, right: right, operator_loc: operator_loc, location: location }
end
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6300
def exclude_end?
flags.anybits?(RangeFlags::EXCLUDE_END)
end
def exclude_end?: () -> bool
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6310
def inspect(inspector = NodeInspector.new)
inspector << inspector.header(self)
flags = [("exclude_end" if exclude_end?)].compact
inspector << "├── flags: #{flags.empty? ? "∅" : flags.join(", ")}\n"
if (left = self.left).nil?
inspector << "├── left: ∅\n"
else
inspector << "├── left:\n"
inspector << left.inspect(inspector.child_inspector("│ ")).delete_prefix(inspector.prefix)
end
if (right = self.right).nil?
inspector << "├── right: ∅\n"
else
inspector << "├── right:\n"
inspector << right.inspect(inspector.child_inspector("│ ")).delete_prefix(inspector.prefix)
end
inspector << "└── operator_loc: #{inspector.location(operator_loc)}\n"
inspector.to_str
end
def inspect(inspector: NodeInspector) -> String
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6305
def operator
operator_loc.slice
end
def operator: () -> String
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 6344
def type
:flip_flop_node
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