public void BurnToken(string symbol, Address target, BigInteger tokenID)
{
var Runtime = this;
Runtime.Expect(IsWitness(target), "invalid witness");
Runtime.Expect(Runtime.TokenExists(symbol), "invalid token");
var token = Runtime.GetToken(symbol);
Runtime.Expect(!token.IsFungible(), "token must be non-fungible");
Runtime.Expect(token.IsBurnable(), "token must be burnable");
Nexus.BurnToken(this, token, target, target, Chain.Name, tokenID);
}
public void SwapTokens(string sourceChain, Address from, string targetChain, Address to, string symbol, BigInteger value, byte[] rom, byte[] ram)
{
var Runtime = this;
Runtime.Expect(sourceChain != targetChain, "source chain and target chain must be different");
Runtime.Expect(Runtime.TokenExists(symbol), "invalid token");
var token = Runtime.GetToken(symbol);
Runtime.Expect(token.Flags.HasFlag(TokenFlags.Transferable), "must be transferable token");
if (token.IsFungible())
{
Runtime.Expect(rom == null, "fungible tokens cant have rom");
Runtime.Expect(ram == null, "fungible tokens cant have ram");
}
else
{
Runtime.Expect(rom != null & rom.Length > 0, "nft rom is missing");
Runtime.Expect(ram != null, "nft ram is missing");
}
if (PlatformExists(sourceChain))
{
Runtime.Expect(sourceChain != DomainSettings.PlatformName, "invalid platform as source chain");
if (token.IsFungible())
{
Nexus.MintTokens(this, token, from, to, sourceChain, value);
}
else
{
Nexus.MintToken(this, token, from, to, sourceChain, value, rom, ram);
}
}
else
if (PlatformExists(targetChain))
{
Runtime.Expect(targetChain != DomainSettings.PlatformName, "invalid platform as target chain");
Nexus.BurnTokens(this, token, from, to, targetChain, value);
var swap = new ChainSwap(DomainSettings.PlatformName, sourceChain, Transaction.Hash, targetChain, targetChain, Hash.Null);
this.Chain.RegisterSwap(this.Storage, to, swap);
}
else
if (sourceChain == this.Chain.Name)
{
Runtime.Expect(IsNameOfParentChain(targetChain) || IsNameOfChildChain(targetChain), "target must be parent or child chain");
Runtime.Expect(to.IsUser, "destination must be user address");
Runtime.Expect(IsWitness(from), "invalid witness");
/*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, targetChain.Name, amount), "source supply check failed");
* }
* }*/
if (token.IsFungible())
{
Nexus.BurnTokens(this, token, from, to, targetChain, value);
}
else
{
Nexus.BurnToken(this, token, from, to, targetChain, value);
}
var swap = new ChainSwap(DomainSettings.PlatformName, sourceChain, Transaction.Hash, DomainSettings.PlatformName, targetChain, Hash.Null);
this.Chain.RegisterSwap(this.Storage, to, swap);
}
else
if (targetChain == this.Chain.Name)
{
Runtime.Expect(IsNameOfParentChain(sourceChain) || IsNameOfChildChain(sourceChain), "source must be parent or child chain");
Runtime.Expect(!to.IsInterop, "destination cannot be interop address");
Runtime.Expect(IsWitness(to), "invalid witness");
if (token.IsFungible())
{
Nexus.MintTokens(this, token, from, to, sourceChain, value);
}
else
{
Nexus.MintToken(this, token, from, to, sourceChain, value, rom, ram);
}
}
else
{
throw new ChainException("invalid swap chain source and destinations");
}
}