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# frozen_string_literal: true
module RuboCop
module AST
# A node extension for `mlhs` nodes.
# This will be used in place of a plain node when the builder constructs
# the AST, making its methods available to all assignment nodes within RuboCop.
class MlhsNode < Node
# Returns all the assignment nodes on the left hand side (LHS) of a multiple assignment.
# These are generally assignment nodes (`lvasgn`, `ivasgn`, `cvasgn`, `gvasgn`, `casgn`)
# but can also be `send` nodes in case of `foo.bar, ... =` or `foo[:bar], ... =`,
# or a `splat` node for `*, ... =`.
#
# @return [Array<Node>] the assignment nodes of the multiple assignment LHS
def assignments
child_nodes.flat_map do |node|
if node.splat_type?
# Anonymous splats have no children
node.child_nodes.first || node
elsif node.mlhs_type?
node.assignments
else
node
end
end
end
end
end
end
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