Prism::IndexTargetNode

Class

Represents assigning to an index.

foo[bar], = 1
^^^^^^^^

begin
rescue => foo[bar]
          ^^^^^^^^
end

for foo[bar] in baz do end
    ^^^^^^^^
Attributes

flags

Read

protected attr_reader flags: Integer

receiver

Read

attr_reader receiver: Prism::node

arguments

Read

attr_reader arguments: ArgumentsNode?

block

Read

attr_reader block: Prism::node?

Class Methods

new(source, flags, receiver, opening_loc, arguments, closing_loc, block, location)
::

def initialize: (Integer flags, Prism::node receiver, Location opening_loc, ArgumentsNode? arguments, Location closing_loc, Prism::node? block, Location location) -> void

type
::

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

Instance Methods

===(other)
#

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

accept(visitor)
#

def accept: (Visitor visitor) -> void

attribute_write?
#

def attribute_write?: () -> bool

child_nodes
#

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

closing
#

def closing: () -> String

closing_loc
#

attr_reader closing_loc: Location

comment_targets
#

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

compact_child_nodes
#

def compact_child_nodes: () -> Array

copy(flags: self.flags, receiver: self.receiver, opening_loc: self.opening_loc, arguments: self.arguments, closing_loc: self.closing_loc, block: self.block, location: self.location)
#

def copy: (?flags: Integer, ?receiver: Prism::node, ?opening_loc: Location, ?arguments: ArgumentsNode?, ?closing_loc: Location, ?block: Prism::node?, ?location: Location) -> IndexTargetNode

deconstruct
#
An alias for child_nodes

deconstruct_keys(keys)
#

def deconstruct_keys: (Array keys) -> { flags: Integer, receiver: Prism::node, opening_loc: Location, arguments: ArgumentsNode?, closing_loc: Location, block: Prism::node?, location: Location }

ignore_visibility?
#

def ignore_visibility?: () -> bool

inspect
#

def inspect -> String

opening
#

def opening: () -> String

opening_loc
#

attr_reader opening_loc: Location

safe_navigation?
#

def safe_navigation?: () -> bool

type
#

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

variable_call?
#

def variable_call?: () -> bool