Class: Prism::BlockArgumentNode

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

Overview

Represents a block argument using ‘&`.

bar(&args)
^^^^^^^^^^

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source, node_id, location, flags, expression, operator_loc) ⇒ BlockArgumentNode

Initialize a new BlockArgumentNode node.



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# File 'lib/prism/node.rb', line 1648

def initialize(source, node_id, location, flags, expression, operator_loc)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @expression = expression
  @operator_loc = operator_loc
end

Instance Attribute Details

#expression ⇒ Object (readonly)

The expression that is being passed as a block argument. This can be any [non-void expression](github.com/ruby/prism/blob/main/docs/parsing_rules.md#non-void-expression).

foo(&args)
    ^^^^^



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# File 'lib/prism/node.rb', line 1696

def expression
  @expression
end

Class Method Details

.type ⇒ Object

Return a symbol representation of this node type. See ‘Node::type`.



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# File 'lib/prism/node.rb', line 1730

def self.type
  :block_argument_node
end

Instance Method Details

#===(other) ⇒ Object

Implements case-equality for the node. This is effectively == but without comparing the value of locations. Locations are checked only for presence.



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# File 'lib/prism/node.rb', line 1736

def ===(other)
  other.is_a?(BlockArgumentNode) &&
    (expression === other.expression) &&
    (operator_loc.nil? == other.operator_loc.nil?)
end

#accept(visitor) ⇒ Object

def accept: (Visitor visitor) -> void



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# File 'lib/prism/node.rb', line 1658

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

#child_nodes ⇒ Object Also known as: deconstruct

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



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# File 'lib/prism/node.rb', line 1663

def child_nodes
  [expression]
end

#comment_targets ⇒ Object

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



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# File 'lib/prism/node.rb', line 1675

def comment_targets
  [*expression, operator_loc] #: Array[Prism::node | Location]
end

#compact_child_nodes ⇒ Object

def compact_child_nodes: () -> Array



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# File 'lib/prism/node.rb', line 1668

def compact_child_nodes
  compact = [] #: Array[Prism::node]
  compact << expression if expression
  compact
end

#copy(node_id: self.node_id, location: self.location, flags: self.flags, expression: self.expression, operator_loc: self.operator_loc) ⇒ Object

def copy: (?node_id: Integer, ?location: Location, ?flags: Integer, ?expression: Prism::node?, ?operator_loc: Location) -> BlockArgumentNode



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# File 'lib/prism/node.rb', line 1680

def copy(node_id: self.node_id, location: self.location, flags: self.flags, expression: self.expression, operator_loc: self.operator_loc)
  BlockArgumentNode.new(source, node_id, location, flags, expression, operator_loc)
end

#deconstruct_keys(keys) ⇒ Object

def deconstruct_keys: (Array keys) -> { node_id: Integer, location: Location, expression: Prism::node?, operator_loc: Location }



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# File 'lib/prism/node.rb', line 1688

def deconstruct_keys(keys)
  { node_id: node_id, location: location, expression: expression, operator_loc: operator_loc }
end

#inspect ⇒ Object

def inspect -> String



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# File 'lib/prism/node.rb', line 1720

def inspect
  InspectVisitor.compose(self)
end

#operator ⇒ Object

def operator: () -> String



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# File 'lib/prism/node.rb', line 1715

def operator
  operator_loc.slice
end

#operator_loc ⇒ Object

Represents the location of the ‘&` operator.

foo(&args)
    ^



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# File 'lib/prism/node.rb', line 1702

def operator_loc
  location = @operator_loc
  return location if location.is_a?(Location)
  @operator_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
end

#save_operator_loc(repository) ⇒ Object

Save the operator_loc location using the given saved source so that it can be retrieved later.



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# File 'lib/prism/node.rb', line 1710

def save_operator_loc(repository)
  repository.enter(node_id, :operator_loc)
end

#type ⇒ Object

Return a symbol representation of this node type. See ‘Node#type`.



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# File 'lib/prism/node.rb', line 1725

def type
  :block_argument_node
end