Represents assigning to an index.
foo[bar], = 1
^^^^^^^^
begin
rescue => foo[bar]
^^^^^^^^
end
for foo[bar] in baz do end
^^^^^^^^
attr_reader opening_loc: Location
attr_reader arguments: ArgumentsNode?
attr_reader closing_loc: Location
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8855
def initialize(flags, receiver, opening_loc, arguments, closing_loc, block, location)
@flags = flags
@receiver = receiver
@opening_loc = opening_loc
@arguments = arguments
@closing_loc = closing_loc
@block = block
@location = location
end
def initialize: (flags: Integer, receiver: Node, opening_loc: Location, arguments: ArgumentsNode?, closing_loc: Location, block: Node?, location: Location) -> void
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8983
def self.type
:index_target_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 8866
def accept(visitor)
visitor.visit_index_target_node(self)
end
def accept: (visitor: Visitor) -> void
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8921
def attribute_write?
flags.anybits?(CallNodeFlags::ATTRIBUTE_WRITE)
end
def attribute_write?: () -> bool
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8871
def child_nodes
[receiver, arguments, block]
end
def child_nodes: () -> Array[nil | Node]
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8931
def closing
closing_loc.slice
end
def closing: () -> String
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8885
def comment_targets
[receiver, opening_loc, *arguments, closing_loc, *block]
end
def comment_targets: () -> Array[Node | Location]
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8876
def compact_child_nodes
compact = []
compact << receiver
compact << arguments if arguments
compact << block if block
compact
end
def compact_child_nodes: () -> Array
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8890
def copy(**params)
IndexTargetNode.new(
params.fetch(:flags) { flags },
params.fetch(:receiver) { receiver },
params.fetch(:opening_loc) { opening_loc },
params.fetch(:arguments) { arguments },
params.fetch(:closing_loc) { closing_loc },
params.fetch(:block) { block },
params.fetch(:location) { location },
)
end
def copy: (**params) -> IndexTargetNode
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8906
def deconstruct_keys(keys)
{ flags: flags, receiver: receiver, opening_loc: opening_loc, arguments: arguments, closing_loc: closing_loc, block: block, location: location }
end
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8936
def inspect(inspector = NodeInspector.new)
inspector << inspector.header(self)
flags = [("safe_navigation" if safe_navigation?), ("variable_call" if variable_call?), ("attribute_write" if attribute_write?)].compact
inspector << "├── flags: #{flags.empty? ? "∅" : flags.join(", ")}\n"
inspector << "├── receiver:\n"
inspector << inspector.child_node(receiver, "│ ")
inspector << "├── opening_loc: #{inspector.location(opening_loc)}\n"
if (arguments = self.arguments).nil?
inspector << "├── arguments: ∅\n"
else
inspector << "├── arguments:\n"
inspector << arguments.inspect(inspector.child_inspector("│ ")).delete_prefix(inspector.prefix)
end
inspector << "├── closing_loc: #{inspector.location(closing_loc)}\n"
if (block = self.block).nil?
inspector << "└── block: ∅\n"
else
inspector << "└── block:\n"
inspector << block.inspect(inspector.child_inspector(" ")).delete_prefix(inspector.prefix)
end
inspector.to_str
end
def inspect(inspector: NodeInspector) -> String
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8926
def opening
opening_loc.slice
end
def opening: () -> String
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8911
def safe_navigation?
flags.anybits?(CallNodeFlags::SAFE_NAVIGATION)
end
def safe_navigation?: () -> bool
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8973
def type
:index_target_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
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 8916
def variable_call?
flags.anybits?(CallNodeFlags::VARIABLE_CALL)
end
def variable_call?: () -> bool