class Prism::ImplicitNode
^^^^
foo in { bar: }
^^^^
{ Foo: }
^^^^
{ foo: }
Represents a node that is implicitly being added to the tree but doesn’t correspond directly to a node in the source.
def self.type
class, but should be faster in a case statement or an array comparison.
Note that like #type, it will still be slower than using == for a single
splitting on the type of the node without having to do a long === chain.
Similar to #type, this method returns a symbol that you can use for
def self.type :implicit_node end
def accept(visitor)
def accept(visitor) visitor.visit_implicit_node(self) end
def child_nodes
def child_nodes [value] end
def comment_targets
def comment_targets [value] end
def compact_child_nodes
def compact_child_nodes [value] end
def copy(**params)
def copy(**params) ImplicitNode.new( params.fetch(:value) { value }, params.fetch(:location) { location }, ) end
def deconstruct_keys(keys)
def deconstruct_keys(keys) { value: value, location: location } end
def initialize(value, location)
def initialize(value, location) @newline = false @value = value @location = location end
def inspect(inspector = NodeInspector.new)
def inspect(inspector = NodeInspector.new) inspector << inspector.header(self) inspector << "└── value:\n" inspector << inspector.child_node(value, " ") inspector.to_str end
def type
keys will use a jump table.
you can take advantage of the fact that case statements with all symbol
it uses a single integer comparison, but also because if you're on CRuby
can use for comparison. This is faster than the other approaches because
Instead, you can call #type, which will return to you a symbol that you
method calls, and/or array allocations.
these approaches are relatively slow because of the constant lookups,
case statement and doing `case node; when cls1; when cls2; end`. Both of
calling `[cls1, cls2].include?(node.class)` or putting the node into a
classes to see what kind of behavior to perform. Usually this is done by
Sometimes you want to check an instance of a node against a list of
def type :implicit_node end