class Solargraph::SourceMap::NodeProcessor::Base

def block_pin position
  pins.select{|pin| pin.is_a?(Pin::Closure) && pin.location.range.contain?(position)}.last
end

def closure_pin position
  pins.select{|pin| pin.is_a?(Pin::Closure) && pin.location.range.contain?(position)}.last
end

def comments_for(node)
  region.source.comments_for(node)
end

def get_node_location(node)
  st = Position.new(node.loc.line, node.loc.column)
  en = Position.new(node.loc.last_line, node.loc.last_column)
  range = Range.new(st, en)
  Location.new(region.filename, range)
end

def initialize node, region, pins, locals
  @node = node
  @region = region
  @pins = pins
  @locals = locals
end

def method_args
  return [] if node.nil?
  list = nil
  args = []
  node.children.each { |c|
    if c.is_a?(AST::Node) and c.type == :args
      list = c
      break
    end
  }
  return args if list.nil?
  list.children.each { |c|
    if c.type == :arg
      args.push c.children[0].to_s
    elsif c.type == :restarg
      args.push "*#{c.children[0]}"
    elsif c.type == :optarg
      args.push "#{c.children[0]} = #{region.code_for(c.children[1])}"
    elsif c.type == :kwarg
      args.push "#{c.children[0]}:"
    elsif c.type == :kwoptarg
      args.push "#{c.children[0]}: #{region.code_for(c.children[1])}"
    elsif c.type == :kwrestarg
      args.push "**#{c.children[0]}"
    elsif c.type == :blockarg
      args.push "&#{c.children[0]}"
    end
  }
  args
end

def named_path_pin position
  pins.select{|pin| pin.is_a?(Pin::Closure) && pin.path && !pin.path.empty? && pin.location.range.contain?(position)}.last
end

def process
  raise NoMethodError, "#{self.class} does not implement the `process` method"
end

def process_children subregion = region
  node.children.each do |child|
    next unless child.is_a?(Parser::AST::Node)
    NodeProcessor.process(child, subregion, pins, locals)
  end
end