func (self *JSRE) dump(call otto.FunctionCall) otto.Value {
	var state *ethstate.State

	if len(call.ArgumentList) > 0 {
		var block *ethchain.Block
		if call.Argument(0).IsNumber() {
			num, _ := call.Argument(0).ToInteger()
			block = self.ethereum.BlockChain().GetBlockByNumber(uint64(num))
		} else if call.Argument(0).IsString() {
			hash, _ := call.Argument(0).ToString()
			block = self.ethereum.BlockChain().GetBlock(ethutil.Hex2Bytes(hash))
		} else {
			fmt.Println("invalid argument for dump. Either hex string or number")
		}

		if block == nil {
			fmt.Println("block not found")

			return otto.UndefinedValue()
		}

		state = block.State()
	} else {
		state = self.ethereum.StateManager().CurrentState()
	}

	v, _ := self.Vm.ToValue(state.Dump())

	return v
}