Class: Prism::TrueNode

Inherits:
PrismNode
  • Object
show all
Defined in:
lib/prism/node.rb,
ext/prism/api_node.c

Overview

Represents the use of the literal ‘true` keyword.

true
^^^^

Instance Method Summary collapse

Constructor Details

#initialize(location) ⇒ TrueNode

def initialize: (location: Location) -> void



13611
13612
13613
 
# File 'lib/prism/node.rb', line 13611

def initialize(location)
  @location = location
end

Instance Method Details

#accept(visitor) ⇒ Object

def accept: (visitor: Visitor) -> void



13616
13617
13618
 
# File 'lib/prism/node.rb', line 13616

def accept(visitor)
  visitor.visit_true_node(self)
end

#child_nodes ⇒ Object Also known as: deconstruct

def child_nodes: () -> Array[nil | Node]



13621
13622
13623
 
# File 'lib/prism/node.rb', line 13621

def child_nodes
  []
end

#comment_targets ⇒ Object

def comment_targets: () -> Array[Node | Location]



13631
13632
13633
 
# File 'lib/prism/node.rb', line 13631

def comment_targets
  []
end

#compact_child_nodes ⇒ Object

def compact_child_nodes: () -> Array



13626
13627
13628
 
# File 'lib/prism/node.rb', line 13626

def compact_child_nodes
  []
end

#copy(**params) ⇒ Object

def copy: (**params) -> TrueNode



13636
13637
13638
13639
13640
 
# File 'lib/prism/node.rb', line 13636

def copy(**params)
  TrueNode.new(
    params.fetch(:location) { location },
  )
end

#deconstruct_keys(keys) ⇒ Object

def deconstruct_keys: (keys: Array) -> Hash[Symbol, nil | Node | Array | String | Token | Array | Location]



13646
13647
13648
 
# File 'lib/prism/node.rb', line 13646

def deconstruct_keys(keys)
  { location: location }
end

#inspect(inspector = NodeInspector.new) ⇒ Object 



13650
13651
13652
13653
 
# File 'lib/prism/node.rb', line 13650

def inspect(inspector = NodeInspector.new)
  inspector << inspector.header(self)
  inspector.to_str
end

#type ⇒ Object

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



13669
13670
13671
 
# File 'lib/prism/node.rb', line 13669

def type
  :true_node
end