Represents an expression modified with a rescue.
foo rescue nil ^^^^^^^^^^^^^^
attr_reader expression: Node
attr_reader keyword_loc: Location
attr_reader rescue_expression: Node
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 14660
def initialize(expression, keyword_loc, rescue_expression, location)
@expression = expression
@keyword_loc = keyword_loc
@rescue_expression = rescue_expression
@location = location
end
def initialize: (expression: Node, keyword_loc: Location, rescue_expression: Node, location: Location) -> void
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 14749
def self.type
:rescue_modifier_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-3.3.0/lib/prism/node.rb, line 14668
def accept(visitor)
visitor.visit_rescue_modifier_node(self)
end
def accept: (visitor: Visitor) -> void
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 14677
def child_nodes
[expression, rescue_expression]
end
def child_nodes: () -> Array[nil | Node]
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 14687
def comment_targets
[expression, keyword_loc, rescue_expression]
end
def comment_targets: () -> Array[Node | Location]
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 14682
def compact_child_nodes
[expression, rescue_expression]
end
def compact_child_nodes: () -> Array
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 14692
def copy(**params)
RescueModifierNode.new(
params.fetch(:expression) { expression },
params.fetch(:keyword_loc) { keyword_loc },
params.fetch(:rescue_expression) { rescue_expression },
params.fetch(:location) { location },
)
end
def copy: (**params) -> RescueModifierNode
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 14705
def deconstruct_keys(keys)
{ expression: expression, keyword_loc: keyword_loc, rescue_expression: rescue_expression, location: location }
end
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 14715
def inspect(inspector = NodeInspector.new)
inspector << inspector.header(self)
inspector << "├── expression:\n"
inspector << inspector.child_node(expression, "│ ")
inspector << "├── keyword_loc: #{inspector.location(keyword_loc)}\n"
inspector << "└── rescue_expression:\n"
inspector << inspector.child_node(rescue_expression, " ")
inspector.to_str
end
def inspect(inspector: NodeInspector) -> String
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 14710
def keyword
keyword_loc.slice
end
def keyword: () -> String
# File tmp/rubies/ruby-3.3.0/lib/prism/node.rb, line 14739
def type
:rescue_modifier_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