class SyntaxTree::DynaSymbol

def ===(other)
  other.is_a?(DynaSymbol) && ArrayMatch.call(parts, other.parts) &&
    quote === other.quote
end

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

def child_nodes
  parts
end

def copy(parts: nil, quote: nil, location: nil)
  node =
    DynaSymbol.new(
      parts: parts || self.parts,
      quote: quote || self.quote,
      location: location || self.location
    )
  node.comments.concat(comments.map(&:copy))
  node
end

def deconstruct_keys(_keys)
  { parts: parts, quote: quote, location: location, comments: comments }
end

def format(q)
  opening_quote, closing_quote = quotes(q)
  q.text(opening_quote)
  q.group do
    parts.each do |part|
      if part.is_a?(TStringContent)
        value = Quotes.normalize(part.value, closing_quote)
        first = true
        value.each_line(chomp: true) do |line|
          if first
            first = false
          else
            q.breakable_return
          end
          q.text(line)
        end
        q.breakable_return if value.end_with?("\n")
      else
        q.format(part)
      end
    end
  end
  q.text(closing_quote)
end

def initialize(parts:, quote:, location:)
  @parts = parts
  @quote = quote
  @location = location
  @comments = []
end

def quotes(q)
  # If we're inside of an assoc node as the key, then it will handle
  # printing the : on its own since it could change sides.
  parent = q.parent
  hash_key = parent.is_a?(Assoc) && parent.key == self
  if quote.start_with?("%s")
    # Here we're going to check if there is a closing character, a new line,
    # or a quote in the content of the dyna symbol. If there is, then
    # quoting could get weird, so just bail out and stick to the original
    # quotes in the source.
    matching = Quotes.matching(quote[2])
    pattern = /[\n#{Regexp.escape(matching)}'"]/
    # This check is to ensure we don't find a matching quote inside of the
    # symbol that would be confusing.
    matched =
      parts.any? do |part|
        part.is_a?(TStringContent) && part.value.match?(pattern)
      end
    if matched
      [quote, matching]
    elsif Quotes.locked?(self, q.quote)
      ["#{":" unless hash_key}'", "'"]
    else
      ["#{":" unless hash_key}#{q.quote}", q.quote]
    end
  elsif Quotes.locked?(self, q.quote)
    if quote.start_with?(":")
      [hash_key ? quote[1..] : quote, quote[1..]]
    else
      [hash_key ? quote : ":#{quote}", quote]
    end
  else
    [hash_key ? q.quote : ":#{q.quote}", q.quote]
  end
end