class Prism::MultiTargetNode

Represents a multi-target expression.

a, (b, c) = 1, 2, 3
   ^^^^^^

This can be a part of MultiWriteNode as above, or the target of a for loop

for a, b in [[1, 2], [3, 4]]
    ^^^^

Public Class Methods

new (source, node_id, location, flags, lefts, rest, rights, lparen_loc, rparen_loc)

Source

# File lib/prism/node.rb, line 17818
def initialize(source, node_id, location, flags, lefts, rest, rights, lparen_loc, rparen_loc)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @lefts = lefts
  @rest = rest
  @rights = rights
  @lparen_loc = lparen_loc
  @rparen_loc = rparen_loc
end

Initialize a new MultiTargetNode node.

Public Instance Methods

Source

# File lib/prism/node.rb, line 17916
def lefts
  @lefts
end

Represents the targets expressions before a splat node.

a, (b, c, *) = 1, 2, 3, 4, 5
    ^^^^

The splat node can be absent, in that case all target expressions are in the left field.

a, (b, c) = 1, 2, 3, 4, 5
    ^^^^

rest → ImplicitRestNode | SplatNode | nil

Source

# File lib/prism/node.rb, line 17937
def rest
  @rest
end

Represents a splat node in the target expression.

a, (b, *c) = 1, 2, 3, 4
       ^^

The variable can be empty, this results in a SplatNode with a nil expression field.

a, (b, *) = 1, 2, 3, 4
       ^

If the * is omitted, this field will contain an ImplicitRestNode

a, (b,) = 1, 2, 3, 4
     ^

Source

# File lib/prism/node.rb, line 17948
def rights
  @rights
end

Represents the targets expressions after a splat node.

a, (*, b, c) = 1, 2, 3, 4, 5
       ^^^^

Locations

Public Instance Methods

lparen_loc → Location | nil

Source

# File lib/prism/node.rb, line 17960
def lparen_loc
  location = @lparen_loc
  case location
  when nil
    nil
  when Location
    location
  else
    @lparen_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
  end
end

The Location of the opening parenthesis.

a, (b, c) = 1, 2, 3
   ^

rparen_loc → Location | nil

Source

# File lib/prism/node.rb, line 17986
def rparen_loc
  location = @rparen_loc
  case location
  when nil
    nil
  when Location
    location
  else
    @rparen_loc = Location.new(source, location >> 32, location & 0xFFFFFFFF)
  end
end

The Location of the closing parenthesis.

a, (b, c) = 1, 2, 3
        ^

Node Interface

Public Class Methods

type ()

Source

# File lib/prism/node.rb, line 17894
def self.type
  :multi_target_node
end

See Node.type.

Public Instance Methods

accept (visitor)

Source

# File lib/prism/node.rb, line 17842
def accept(visitor)
  visitor.visit_multi_target_node(self)
end

See Node.accept.

child_nodes ()

Source

# File lib/prism/node.rb, line 17847
def child_nodes
  [*lefts, rest, *rights]
end

See Node.child_nodes.

Also aliased as: deconstruct

comment_targets ()

Source

# File lib/prism/node.rb, line 17870
def comment_targets
  [*lefts, *rest, *rights, *lparen_loc, *rparen_loc] #: Array[Prism::node | Location]
end

See Node.comment_targets.

compact_child_nodes ()

Source

# File lib/prism/node.rb, line 17861
def compact_child_nodes
  compact = [] #: Array[Prism::node]
  compact.concat(lefts)
  compact << rest if rest
  compact.concat(rights)
  compact
end

See Node.compact_child_nodes.

copy(**fields) → MultiTargetNode

Source

# File lib/prism/node.rb, line 17878
def copy(node_id: self.node_id, location: self.location, flags: self.flags, lefts: self.lefts, rest: self.rest, rights: self.rights, lparen_loc: self.lparen_loc, rparen_loc: self.rparen_loc)
  MultiTargetNode.new(source, node_id, location, flags, lefts, rest, rights, lparen_loc, rparen_loc)
end

Creates a copy of self with the given fields, using self as the template.

deconstruct ()

Alias for: child_nodes

each_child_node () { |node| ... }

Source

# File lib/prism/node.rb, line 17852
def each_child_node
  return to_enum(:each_child_node) unless block_given?

  lefts.each { |node| yield node }
  yield rest if rest
  rights.each { |node| yield node }
end

See Node.each_child_node.

type ()

Source

# File lib/prism/node.rb, line 17889
def type
  :multi_target_node
end

See Node#type.

Repository

Public Instance Methods

save_lparen_loc (repository)

Source

# File lib/prism/node.rb, line 17975
def save_lparen_loc(repository)
  repository.enter(node_id, :lparen_loc) unless @lparen_loc.nil?
end

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

save_rparen_loc (repository)

Source

# File lib/prism/node.rb, line 18001
def save_rparen_loc(repository)
  repository.enter(node_id, :rparen_loc) unless @rparen_loc.nil?
end

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

Slicing

Public Instance Methods

lparen → String | nil

Source

# File lib/prism/node.rb, line 18010
def lparen
  lparen_loc&.slice
end

Slice the location of lparen_loc from the source.

rparen → String | nil

Source

# File lib/prism/node.rb, line 18018
def rparen
  rparen_loc&.slice
end

Slice the location of rparen_loc from the source.