关于：持币生息理财系统开发合约部署方案

function pledgeToken() public payable{
require(address(msg.sender) == address(tx.origin), "no contract");

require(_isDIS, "is disable");

require(_leftMiningAmount>0, "less token");

require(msg.value>=_minAmount, "less token");

require(_totalPledegAmount.add(msg.value)<=_maxPledgeAmount, "more token");

require(block.timestamp>=_startTime&&block.timestamp<=_endTime, "is disable");



if(_orders[msg.sender].isExist==false){

    keys.push(KeyFlag(msg.sender,true));

    size++;

    createOrder(msg.value,keys.length.sub(1));

}else{

    PledgeOrder storage order=_orders[msg.sender];

    order.token=order.token.add(msg.value);

    keys[order.index].isExist=true;

}

_totalPledegAmount=_totalPledegAmount.add(msg.value);