class Prism::CallNode
Represents a method call, in all of the various forms that can take.
foo ^^^ foo() ^^^^^ +foo ^^^^ foo + bar ^^^^^^^^^ foo.bar ^^^^^^^ foo&.bar ^^^^^^^^
Attributes
attr_reader arguments: ArgumentsNode
?
attr_reader block: Node
?
attr_reader call_operator_loc
: Location
?
attr_reader closing_loc
: Location
?
attr_reader message_loc
: Location
?
attr_reader name: Symbol
attr_reader opening_loc
: Location
?
attr_reader receiver: Node
?
Public Class Methods
def initialize: (flags: Integer, receiver: Node
?, call_operator_loc
: Location
?, name: Symbol, message_loc
: Location
?, opening_loc
: Location
?, arguments: ArgumentsNode
?, closing_loc
: Location
?, block: Node
?, location: Location
) -> void
# File prism/node.rb, line 2182 def initialize(flags, receiver, call_operator_loc, name, message_loc, opening_loc, arguments, closing_loc, block, location) @flags = flags @receiver = receiver @call_operator_loc = call_operator_loc @name = name @message_loc = message_loc @opening_loc = opening_loc @arguments = arguments @closing_loc = closing_loc @block = block @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 2333 def self.type :call_node end
Public Instance Methods
def accept: (visitor: Visitor
) -> void
# File prism/node.rb, line 2196 def accept(visitor) visitor.visit_call_node(self) end
def attribute_write?: () -> bool
# File prism/node.rb, line 2254 def attribute_write? flags.anybits?(CallNodeFlags::ATTRIBUTE_WRITE) end
def call_operator
: () -> String?
# File prism/node.rb, line 2259 def call_operator call_operator_loc&.slice end
def child_nodes
: () -> Array[nil | Node]
# File prism/node.rb, line 2201 def child_nodes [receiver, arguments, block] end
def closing: () -> String?
# File prism/node.rb, line 2274 def closing closing_loc&.slice end
def comment_targets
: () -> Array[Node | Location]
# File prism/node.rb, line 2215 def comment_targets [*receiver, *call_operator_loc, *message_loc, *opening_loc, *arguments, *closing_loc, *block] end
def compact_child_nodes
: () -> Array
# File prism/node.rb, line 2206 def compact_child_nodes compact = [] compact << receiver if receiver compact << arguments if arguments compact << block if block compact end
def copy: (**params) -> CallNode
# File prism/node.rb, line 2220 def copy(**params) CallNode.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(:opening_loc) { opening_loc }, params.fetch(:arguments) { arguments }, params.fetch(:closing_loc) { closing_loc }, params.fetch(:block) { block }, params.fetch(:location) { location }, ) end
def deconstruct_keys
: (keys: Array) -> Hash[Symbol, nil | Node
| Array | String | Token
| Array | Location]
# File prism/node.rb, line 2239 def deconstruct_keys(keys) { flags: flags, receiver: receiver, call_operator_loc: call_operator_loc, name: name, message_loc: message_loc, opening_loc: opening_loc, arguments: arguments, closing_loc: closing_loc, block: block, location: location } end
def inspect(inspector: NodeInspector) -> String
# File prism/node.rb, line 2279 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" 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 << "├── name: #{name.inspect}\n" inspector << "├── message_loc: #{inspector.location(message_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.to_str end
def message: () -> String?
# File prism/node.rb, line 2264 def message message_loc&.slice end
def opening: () -> String?
# File prism/node.rb, line 2269 def opening opening_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 2323 def type :call_node end
def variable_call?: () -> bool
# File prism/node.rb, line 2249 def variable_call? flags.anybits?(CallNodeFlags::VARIABLE_CALL) end