class Prism::CallTargetNode
Represents assigning to a method call.
foo.bar, = 1 ^^^^^^^ begin rescue => foo.bar ^^^^^^^ end for foo.bar in baz do end ^^^^^^^
Attributes
attr_reader call_operator_loc
: Location
attr_reader message_loc
: Location
attr_reader name: Symbol
attr_reader receiver: Node
Public Class Methods
def initialize: (flags: Integer, receiver: Node
, call_operator_loc
: Location
, name: Symbol, message_loc
: Location
, location: Location
) -> void
# File prism/node.rb, line 2704 def initialize(flags, receiver, call_operator_loc, name, message_loc, location) @flags = flags @receiver = receiver @call_operator_loc = call_operator_loc @name = name @message_loc = message_loc @location = location 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 prism/node.rb, line 2815 def self.type :call_target_node end
Public Instance Methods
def accept: (visitor: Visitor
) -> void
# File prism/node.rb, line 2714 def accept(visitor) visitor.visit_call_target_node(self) end
def attribute_write?: () -> bool
# File prism/node.rb, line 2764 def attribute_write? flags.anybits?(CallNodeFlags::ATTRIBUTE_WRITE) end
def call_operator
: () -> String
# File prism/node.rb, line 2769 def call_operator call_operator_loc.slice end
def child_nodes
: () -> Array[nil | Node]
# File prism/node.rb, line 2719 def child_nodes [receiver] end
def comment_targets
: () -> Array[Node | Location]
# File prism/node.rb, line 2729 def comment_targets [receiver, call_operator_loc, message_loc] end
def compact_child_nodes
: () -> Array
# File prism/node.rb, line 2724 def compact_child_nodes [receiver] end
def copy: (**params) -> CallTargetNode
# File prism/node.rb, line 2734 def copy(**params) CallTargetNode.new( params.fetch(:flags) { flags }, params.fetch(:receiver) { receiver }, params.fetch(:call_operator_loc) { call_operator_loc }, params.fetch(:name) { name }, params.fetch(:message_loc) { message_loc }, params.fetch(:location) { location }, ) end
def deconstruct_keys
: (keys: Array) -> Hash[Symbol, nil | Node
| Array | String | Token
| Array | Location]
# File prism/node.rb, line 2749 def deconstruct_keys(keys) { flags: flags, receiver: receiver, call_operator_loc: call_operator_loc, name: name, message_loc: message_loc, location: location } end
def inspect(inspector: NodeInspector) -> String
# File prism/node.rb, line 2779 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 << "├── call_operator_loc: #{inspector.location(call_operator_loc)}\n" inspector << "├── name: #{name.inspect}\n" inspector << "└── message_loc: #{inspector.location(message_loc)}\n" inspector.to_str end
def message: () -> String
# File prism/node.rb, line 2774 def message message_loc.slice 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 prism/node.rb, line 2805 def type :call_target_node end
def variable_call?: () -> bool
# File prism/node.rb, line 2759 def variable_call? flags.anybits?(CallNodeFlags::VARIABLE_CALL) end