class ObjectFramework::HTTP2::HPACK::Cursor

# File lib/object_framework/http2/hpack.rb, line 86
def initialize(bytes); @bytes, @offset = bytes.b, 0; end

# File lib/object_framework/http2/hpack.rb, line 87
def done?; @offset == @bytes.bytesize; end

# File lib/object_framework/http2/hpack.rb, line 97
def integer(prefix)
  maximum = (1 << prefix) - 1
  value = take(1).getbyte(0) & maximum
  return value if value < maximum
  9.times do |index|
    byte = take(1).getbyte(0)
    value += (byte & 127) << (index * 7)
    raise CompressionError if value > 2**63 - 1
    return value if byte < 128
  end
  raise CompressionError
end

# File lib/object_framework/http2/hpack.rb, line 88
def peek; @bytes.getbyte(@offset) || raise(CompressionError); end

# File lib/object_framework/http2/hpack.rb, line 110
def string(limit:)
  huffman = (peek & 128).positive?
  length = integer(7)
  value = take(length)
  value = Huffman.decode(value, limit:) if huffman
  raise CompressionError if value.bytesize > limit
  value
end

# File lib/object_framework/http2/hpack.rb, line 90
def take(count)
  raise CompressionError if count.negative? || @offset + count > @bytes.bytesize
  result = @bytes.byteslice(@offset, count)
  @offset += count
  result
end