import
  sequtils,
  ../constants, ../errors, ../logging, ../validation, ../utils_numeric

type
  Memory* = ref object
    logger*: Logger
    bytes*: seq[byte]

proc newMemory*: Memory =
  new(result)
  result.bytes = @[]
  result.logger = logging.getLogger("evm.vm.memory.Memory")

proc len*(memory: Memory): int =
  result = len(memory.bytes)

proc extend*(memory: var Memory; startPosition: Int256; size: Int256) =
  if size == 0:
    return
  var newSize = ceil32(startPosition + size)
  if newSize <= len(memory).Int256:
    return
  var sizeToExtend = newSize.int - len(memory)
  memory.bytes = memory.bytes.concat(repeat(0.byte, sizeToExtend))

proc read*(self: var Memory; startPosition: Int256; size: Int256): cstring =
  return cstring""