class ObjectFramework::HTTP2::HPACK::Decoder

# File lib/object_framework/http2/hpack.rb, line 121
def initialize(table_limit: 4096, header_limit: 32 * 1024)
  @maximum, @capacity, @header_limit = table_limit, table_limit, header_limit
  @dynamic, @size = [], 0
end

# File lib/object_framework/http2/hpack.rb, line 126
def decode(bytes)
  cursor, headers, total, saw_header = Cursor.new(bytes), [], 0, false
  until cursor.done?
    first = cursor.peek
    if (first & 128).positive?
      pair = lookup(cursor.integer(7))
    elsif (first & 224) == 32
      raise CompressionError if saw_header
      capacity = cursor.integer(5)
      raise CompressionError if capacity > @maximum
      @capacity = capacity
      evict
      next
    else
      indexed = (first & 64).positive?
      index = cursor.integer(indexed ? 6 : 4)
      name = index.zero? ? cursor.string(limit: @header_limit - total) : lookup(index).first
      value = cursor.string(limit: @header_limit - total)
      pair = [name.freeze, value.freeze].freeze
      add(pair) if indexed
    end
    total += entry_size(pair)
    raise CompressionError if total > @header_limit
    headers << pair
    saw_header = true
  end
  headers.freeze
end