‘锁定（lock）’和‘解锁（unlock）’方法中包含一个函数，用以桥接到另一条区块链时委托 NFT 所有权。
‘lock’函数示例如下：
export default function lock(state, action) {
const delegatedOwner = input.delegatedOwner;
ContractAssert(delegatedOwner, `No target specified.`);
const qty = input.qty;
ContractAssert(qty && qty>0, `No valid quantity specified.`);
const balances = state.balances;
ContractAssert(caller in balances && balances[caller] >= qty, `Caller has insufficient funds`);
const address=input.address
const network=input.network
ContractAssert(address, `No target specified.`);
ContractAssert(network, `No network specified.`);
balances[caller] -= qty;
let lockedArray=state.locked
let index=lockedArray.findIndex((e)=>{
e.vaultAddress==delegatedOwner && e.lockedBy==caller
})
if(index>=0){
lockedArray[index].amount+=qty
}else{
lockedArray.push({
"UID": SmartWeave.transaction.id,
"vaultAddress":delegatedOwner,
"lockedBy":caller,
"amount":qty,
"address":address,
"network":network
})
}
state.locked=lockedArray
return {state};
}
解锁（unlock）’方法处理从托管中移除 NFT。
‘解锁（unlock）’方法示例如下：
// Only the vault owner can call this function
if (input.function === "unlock") {
const recipientAddress = input.recipientAddress;
ContractAssert(recipientAddress, `No target specified.`);
let qty = input.qty;
ContractAssert(qty && qty > 0, `No valid quantity specified.`);
let lockedArray = state.locked;
let index = lockedArray.findIndex((e) => {
return e.vaultAddress == caller && e.lockedBy == recipientAddress;
});
ContractAssert(
index >= 0,
`Only vault owner can call this function and there must be some locked NFTs under the recipient address`
);
if (lockedArray[index].amount - qty == 0) {
lockedArray.splice(index, 1);
state.balances[recipientAddress] =
Number(state.balances[recipientAddress]) + qty;
} else if (lockedArray[index].amount - qty > 0) {
lockedArray[index].amount -= qty;
state.balances[recipientAddress] =
Number(state.balances[recipientAddress]) + qty;
} else {
ContractAssert(
lockedArray[index].amount - qty >= 0,
`You cannot unlock more qty than currently locked`
);
}
state.locked = lockedArray;
return { state };
}
更多关于桥接可兼容性，请联系：[email protected]。