class Prism::IndexOperatorWriteNode
Represents the use of an assignment operator on a call to ‘[]`.
foo.bar[baz] += value ^^^^^^^^^^^^^^^^^^^^^
Attributes
attr_reader arguments: ArgumentsNode
?
attr_reader block: Prism::node?
private attr_reader flags: Integer
attr_reader operator: Symbol
attr_reader receiver: Prism::node?
attr_reader value: Prism::node
Public Class Methods
def initialize: (Integer
flags, Prism::node? receiver, Location
? call_operator_loc
, Location
opening_loc
, ArgumentsNode
? arguments, Location
closing_loc
, Prism::node? block, Symbol
operator, Location
operator_loc
, Prism::node value, Location
location) -> void
# File lib/prism/node.rb, line 9139 def initialize(source, flags, receiver, call_operator_loc, opening_loc, arguments, closing_loc, block, operator, operator_loc, value, location) @source = source @newline = false @location = location @flags = flags @receiver = receiver @call_operator_loc = call_operator_loc @opening_loc = opening_loc @arguments = arguments @closing_loc = closing_loc @block = block @operator = operator @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 9339 def self.type :index_operator_write_node end
Public Instance Methods
def accept: (Visitor
visitor) -> void
# File lib/prism/node.rb, line 9156 def accept(visitor) visitor.visit_index_operator_write_node(self) end
def attribute_write?: () -> bool
# File lib/prism/node.rb, line 9258 def attribute_write? flags.anybits?(CallNodeFlags::ATTRIBUTE_WRITE) end
def call_operator
: () -> String
?
# File lib/prism/node.rb, line 9268 def call_operator call_operator_loc&.slice end
attr_reader call_operator_loc
: Location
?
# File lib/prism/node.rb, line 9201 def call_operator_loc location = @call_operator_loc case location when nil nil when Location location else @call_operator_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end end
def child_nodes
: () -> Array[nil | Node]
# File lib/prism/node.rb, line 9161 def child_nodes [receiver, arguments, block, value] end
def closing: () -> String
# File lib/prism/node.rb, line 9278 def closing closing_loc.slice end
attr_reader closing_loc
: Location
# File lib/prism/node.rb, line 9224 def closing_loc location = @closing_loc return location if location.is_a?(Location) @closing_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end
def comment_targets
: () -> Array[Node | Location]
# File lib/prism/node.rb, line 9176 def comment_targets [*receiver, *call_operator_loc, opening_loc, *arguments, closing_loc, *block, operator_loc, value] #: Array[Prism::node | Location] end
def compact_child_nodes
: () -> Array
# File lib/prism/node.rb, line 9166 def compact_child_nodes compact = [] #: Array[Prism::node] compact << receiver if receiver compact << arguments if arguments compact << block if block compact << value compact end
def copy: (?flags: Integer
, ?receiver: Prism::node?, ?call_operator_loc: Location
?, ?opening_loc: Location
, ?arguments: ArgumentsNode
?, ?closing_loc: Location
, ?block: Prism::node?, ?operator: Symbol
, ?operator_loc: Location
, ?value: Prism::node, ?location: Location
) -> IndexOperatorWriteNode
# File lib/prism/node.rb, line 9181 def copy(flags: self.flags, receiver: self.receiver, call_operator_loc: self.call_operator_loc, opening_loc: self.opening_loc, arguments: self.arguments, closing_loc: self.closing_loc, block: self.block, operator: self.operator, operator_loc: self.operator_loc, value: self.value, location: self.location) IndexOperatorWriteNode.new(source, flags, receiver, call_operator_loc, opening_loc, arguments, closing_loc, block, operator, operator_loc, value, location) end
def deconstruct_keys
: (Array keys) -> { flags: Integer
, receiver: Prism::node?, call_operator_loc
: Location
?, opening_loc
: Location
, arguments: ArgumentsNode
?, closing_loc
: Location
, block: Prism::node?, operator: Symbol
, operator_loc
: Location
, value: Prism::node, location: Location
}
# File lib/prism/node.rb, line 9189 def deconstruct_keys(keys) { flags: flags, receiver: receiver, call_operator_loc: call_operator_loc, opening_loc: opening_loc, arguments: arguments, closing_loc: closing_loc, block: block, operator: operator, operator_loc: operator_loc, value: value, location: location } end
def ignore_visibility?: () -> bool
# File lib/prism/node.rb, line 9263 def ignore_visibility? flags.anybits?(CallNodeFlags::IGNORE_VISIBILITY) end
def inspect(NodeInspector inspector) -> String
# File lib/prism/node.rb, line 9283 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?), ("ignore_visibility" if ignore_visibility?)].compact inspector << "├── flags: #{flags.empty? ? "∅" : flags.join(", ")}\n" if (receiver = self.receiver).nil? inspector << "├── receiver: ∅\n" else inspector << "├── receiver:\n" inspector << receiver.inspect(inspector.child_inspector("│ ")).delete_prefix(inspector.prefix) end inspector << "├── call_operator_loc: #{inspector.location(call_operator_loc)}\n" 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 << "├── operator: #{operator.inspect}\n" inspector << "├── operator_loc: #{inspector.location(operator_loc)}\n" inspector << "└── value:\n" inspector << inspector.child_node(value, " ") inspector.to_str end
def opening: () -> String
# File lib/prism/node.rb, line 9273 def opening opening_loc.slice end
attr_reader opening_loc
: Location
# File lib/prism/node.rb, line 9214 def opening_loc location = @opening_loc return location if location.is_a?(Location) @opening_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF) end
attr_reader operator_loc
: Location
# File lib/prism/node.rb, line 9237 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 9329 def type :index_operator_write_node end
def variable_call?: () -> bool
# File lib/prism/node.rb, line 9253 def variable_call? flags.anybits?(CallNodeFlags::VARIABLE_CALL) end