class Prism::ParametersNode

# File lib/prism/node.rb, line 19486
def initialize(source, node_id, location, flags, requireds, optionals, rest, posts, keywords, keyword_rest, block)
  @source = source
  @node_id = node_id
  @location = location
  @flags = flags
  @requireds = requireds
  @optionals = optionals
  @rest = rest
  @posts = posts
  @keywords = keywords
  @keyword_rest = keyword_rest
  @block = block
end

# File lib/prism/node.rb, line 19634
def block
  @block
end

# File lib/prism/node.rb, line 19626
def keyword_rest
  @keyword_rest
end

# File lib/prism/node.rb, line 19618
def keywords
  @keywords
end

# File lib/prism/node.rb, line 19594
def optionals
  @optionals
end

# File lib/prism/node.rb, line 19610
def posts
  @posts
end

# File lib/prism/node.rb, line 19586
def requireds
  @requireds
end

# File lib/prism/node.rb, line 19602
def rest
  @rest
end

# File lib/prism/node_ext.rb, line 272
def signature
  names = [] #: Array[[Symbol, Symbol] | [Symbol]]

  requireds.each do |param|
    names << (param.is_a?(MultiTargetNode) ? [:req] : [:req, param.name])
  end

  optionals.each { |param| names << [:opt, param.name] }

  if rest && rest.is_a?(RestParameterNode)
    names << [:rest, rest.name || :*]
  end

  posts.each do |param|
    case param
    when MultiTargetNode
      names << [:req]
    when NoKeywordsParameterNode, KeywordRestParameterNode,
        NoBlockParameterNode, BlockParameterNode,
        ForwardingParameterNode
      # Invalid syntax, e.g. "def f(**nil, ...)" moves the NoKeywordsParameterNode to posts
      raise "Invalid syntax"
    else
      names << [:req, param.name]
    end
  end

  # Regardless of the order in which the keywords were defined, the required
  # keywords always come first followed by the optional keywords.
  keyopt = [] #: Array[OptionalKeywordParameterNode]
  keywords.each do |param|
    if param.is_a?(OptionalKeywordParameterNode)
      keyopt << param
    else
      names << [:keyreq, param.name]
    end
  end

  keyopt.each { |param| names << [:key, param.name] }

  case keyword_rest
  when ForwardingParameterNode
    names.concat([[:rest, :*], [:keyrest, :**], [:block, :&]])
  when KeywordRestParameterNode
    names << [:keyrest, keyword_rest.name || :**]
  when NoKeywordsParameterNode
    names << [:nokey]
  end

  case block
  when BlockParameterNode
    names << [:block, block.name || :&]
  when NoBlockParameterNode
    names << [:noblock]
  end

  names
end

# File lib/prism/node.rb, line 19572
def self.type
  :parameters_node
end

# File lib/prism/node.rb, line 19512
def accept(visitor)
  visitor.visit_parameters_node(self)
end

# File lib/prism/node.rb, line 19517
def child_nodes
  [*requireds, *optionals, rest, *posts, *keywords, keyword_rest, block]
end

# File lib/prism/node.rb, line 19548
def comment_targets
  [*requireds, *optionals, *rest, *posts, *keywords, *keyword_rest, *block] #: Array[Prism::node | Location]
end

# File lib/prism/node.rb, line 19535
def compact_child_nodes
  compact = [] #: Array[Prism::node]
  compact.concat(requireds)
  compact.concat(optionals)
  compact << rest if rest
  compact.concat(posts)
  compact.concat(keywords)
  compact << keyword_rest if keyword_rest
  compact << block if block
  compact
end

# File lib/prism/node.rb, line 19556
def copy(node_id: self.node_id, location: self.location, flags: self.flags, requireds: self.requireds, optionals: self.optionals, rest: self.rest, posts: self.posts, keywords: self.keywords, keyword_rest: self.keyword_rest, block: self.block)
  ParametersNode.new(source, node_id, location, flags, requireds, optionals, rest, posts, keywords, keyword_rest, block)
end

# File lib/prism/node.rb, line 19522
def each_child_node
  return to_enum(:each_child_node) unless block_given?

  requireds.each { |node| yield node }
  optionals.each { |node| yield node }
  yield rest if rest
  posts.each { |node| yield node }
  keywords.each { |node| yield node }
  yield keyword_rest if keyword_rest
  yield block if block
end

# File lib/prism/node.rb, line 19567
def type
  :parameters_node
end