This node wraps a constant write to indicate that when the value is written, it should have its shareability state modified.
# shareable_constant_value: literal
C = { a: 1 }
^^^^^^^^^^^^
The constant write that should be modified with the shareability state.
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16670
def initialize(source, flags, write, location)
@source = source
@location = location
@flags = flags
@write = write
end
def initialize: (Integer flags, ConstantWriteNode | ConstantAndWriteNode | ConstantOrWriteNode | ConstantOperatorWriteNode | ConstantPathWriteNode | ConstantPathAndWriteNode | ConstantPathOrWriteNode | ConstantPathOperatorWriteNode write, Location location) -> void
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16761
def self.type
:shareable_constant_node
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 tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16767
def ===(other)
other.is_a?(ShareableConstantNode) &&
(flags === other.flags) &&
(write === other.write)
end
Implements case-equality for the node. This is effectively == but without comparing the value of locations. Locations are checked only for presence.
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16678
def accept(visitor)
visitor.visit_shareable_constant_node(self)
end
def accept: (Visitor visitor) -> void
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16683
def child_nodes
[write]
end
def child_nodes: () -> Array[nil | Node]
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16693
def comment_targets
[write] #: Array[Prism::node | Location]
end
def comment_targets: () -> Array[Node | Location]
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16688
def compact_child_nodes
[write]
end
def compact_child_nodes: () -> Array
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16698
def copy(flags: self.flags, write: self.write, location: self.location)
ShareableConstantNode.new(source, flags, write, location)
end
def copy: (?flags: Integer, ?write: ConstantWriteNode | ConstantAndWriteNode | ConstantOrWriteNode | ConstantOperatorWriteNode | ConstantPathWriteNode | ConstantPathAndWriteNode | ConstantPathOrWriteNode | ConstantPathOperatorWriteNode, ?location: Location) -> ShareableConstantNode
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16706
def deconstruct_keys(keys)
{ flags: flags, write: write, location: location }
end
def deconstruct_keys: (Array keys) -> { flags: Integer, write: ConstantWriteNode | ConstantAndWriteNode | ConstantOrWriteNode | ConstantOperatorWriteNode | ConstantPathWriteNode | ConstantPathAndWriteNode | ConstantPathOrWriteNode | ConstantPathOperatorWriteNode, location: Location }
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16728
def experimental_copy?
flags.anybits?(ShareableConstantNodeFlags::EXPERIMENTAL_COPY)
end
def experimental_copy?: () -> bool
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16723
def experimental_everything?
flags.anybits?(ShareableConstantNodeFlags::EXPERIMENTAL_EVERYTHING)
end
def experimental_everything?: () -> bool
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16733
def inspect
InspectVisitor.compose(self)
end
def inspect -> String
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16718
def literal?
flags.anybits?(ShareableConstantNodeFlags::LITERAL)
end
def literal?: () -> bool
# File tmp/rubies/ruby-3.4.0-preview1/lib/prism/node.rb, line 16751
def type
:shareable_constant_node
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