public void SendToken(Address targetChainAddress, Address from, Address to, string symbol, BigInteger tokenID)
{
Runtime.Expect(IsWitness(from), "invalid witness");
Runtime.Expect(IsAddressOfParentChain(targetChainAddress) || IsAddressOfChildChain(targetChainAddress), "source must be parent or child chain");
Runtime.Expect(!to.IsInterop, "destination cannot be interop address");
var targetChain = this.Runtime.Nexus.FindChainByAddress(targetChainAddress);
Runtime.Expect(this.Runtime.Nexus.TokenExists(symbol), "invalid token");
var tokenInfo = this.Runtime.Nexus.GetTokenInfo(symbol);
Runtime.Expect(!tokenInfo.Flags.HasFlag(TokenFlags.Fungible), "must be non-fungible token");
if (tokenInfo.IsCapped())
{
var supplies = new SupplySheet(symbol, this.Runtime.Chain, Runtime.Nexus);
BigInteger amount = 1;
if (IsAddressOfParentChain(targetChainAddress))
{
Runtime.Expect(supplies.MoveToParent(this.Storage, amount), "source supply check failed");
}
else // child chain
{
Runtime.Expect(supplies.MoveToChild(this.Storage, this.Runtime.Chain.Name, amount), "source supply check failed");
}
}
Runtime.Expect(Runtime.Nexus.TransferToken(Runtime, symbol, from, targetChainAddress, tokenID), "take token failed");
Runtime.Notify(EventKind.TokenBurn, from, new TokenEventData()
{
symbol = symbol, value = tokenID, chainAddress = Runtime.Chain.Address
});
Runtime.Notify(EventKind.TokenEscrow, to, new TokenEventData()
{
symbol = symbol, value = tokenID, chainAddress = targetChainAddress
});
}
public void SendTokens(Address targetChainAddress, Address from, Address to, string symbol, BigInteger amount)
{
Runtime.Expect(IsWitness(from), "invalid witness");
Runtime.Expect(IsAddressOfParentChain(targetChainAddress) || IsAddressOfChildChain(targetChainAddress), "target must be parent or child chain");
var targetChain = this.Runtime.Nexus.FindChainByAddress(targetChainAddress);
Runtime.Expect(this.Runtime.Nexus.TokenExists(symbol), "invalid token");
var tokenInfo = this.Runtime.Nexus.GetTokenInfo(symbol);
Runtime.Expect(tokenInfo.Flags.HasFlag(TokenFlags.Fungible), "must be fungible token");
if (tokenInfo.IsCapped)
{
var sourceSupplies = new SupplySheet(symbol, this.Runtime.Chain, Runtime.Nexus);
var targetSupplies = new SupplySheet(symbol, targetChain, Runtime.Nexus);
if (IsAddressOfParentChain(targetChainAddress))
{
Runtime.Expect(sourceSupplies.MoveToParent(this.Storage, amount), "source supply check failed");
}
else // child chain
{
Runtime.Expect(sourceSupplies.MoveToChild(this.Storage, this.Runtime.Chain.Name, amount), "source supply check failed");
}
}
Runtime.Expect(Runtime.Nexus.BurnTokens(symbol, this.Storage, this.Runtime.Chain, from, amount), "burn failed");
Runtime.Notify(EventKind.TokenBurn, from, new TokenEventData()
{
symbol = symbol, value = amount, chainAddress = Runtime.Chain.Address
});
Runtime.Notify(EventKind.TokenEscrow, to, new TokenEventData()
{
symbol = symbol, value = amount, chainAddress = targetChainAddress
});
}