// NFT version
internal bool BurnToken(string symbol, StorageContext storage, Address target, BigInteger tokenID)
{
if (!TokenExists(symbol))
{
return(false);
}
var tokenInfo = GetTokenInfo(symbol);
if (tokenInfo.Flags.HasFlag(TokenFlags.Fungible))
{
return(false);
}
var chain = RootChain;
var supply = new SupplySheet(symbol, chain, this);
if (!supply.Burn(storage, 1))
{
return(false);
}
var ownerships = new OwnershipSheet(symbol);
if (!ownerships.Take(storage, target, tokenID))
{
return(false);
}
return(true);
}
internal bool BurnTokens(string symbol, StorageContext storage, BalanceSheet balances, SupplySheet supply, Address target, BigInteger amount)
{
if (!TokenExists(symbol))
{
return(false);
}
var tokenInfo = GetTokenInfo(symbol);
if (!tokenInfo.Flags.HasFlag(TokenFlags.Fungible))
{
return(false);
}
if (amount <= 0)
{
return(false);
}
if (tokenInfo.IsCapped && !supply.Burn(amount))
{
return(false);
}
if (!balances.Subtract(storage, target, amount))
{
return(false);
}
EditTokenSupply(symbol, -amount);
return(true);
}
internal bool BurnTokens(string symbol, StorageContext storage, Chain chain, Address target, BigInteger amount)
{
if (!TokenExists(symbol))
{
return(false);
}
var tokenInfo = GetTokenInfo(symbol);
if (!tokenInfo.Flags.HasFlag(TokenFlags.Fungible))
{
return(false);
}
if (amount <= 0)
{
return(false);
}
var supply = new SupplySheet(symbol, chain, this);
if (tokenInfo.IsCapped && !supply.Burn(storage, amount))
{
return(false);
}
var balances = new BalanceSheet(symbol);
if (!balances.Subtract(storage, target, amount))
{
return(false);
}
return(true);
}
internal bool BurnTokens(RuntimeVM runtimeVM, string symbol, Address target, BigInteger amount)
{
if (!TokenExists(symbol))
{
return(false);
}
var tokenInfo = GetTokenInfo(symbol);
if (!tokenInfo.Flags.HasFlag(TokenFlags.Fungible))
{
return(false);
}
if (amount <= 0)
{
return(false);
}
var supply = new SupplySheet(symbol, runtimeVM.Chain, this);
if (tokenInfo.IsCapped && !supply.Burn(runtimeVM.ChangeSet, amount))
{
return(false);
}
var balances = new BalanceSheet(symbol);
if (!balances.Subtract(runtimeVM.ChangeSet, target, amount))
{
return(false);
}
var tokenTriggerResult = SmartContract.InvokeTrigger(runtimeVM, tokenInfo.Script, TokenContract.TriggerBurn, target, amount);
if (!tokenTriggerResult)
{
return(false);
}
var accountScript = this.LookUpAddressScript(target);
var accountTriggerResult = SmartContract.InvokeTrigger(runtimeVM, accountScript, AccountContract.TriggerBurn, target, amount);
if (!accountTriggerResult)
{
return(false);
}
return(true);
}
// NFT version
internal bool BurnToken(RuntimeVM runtimeVM, string symbol, Address target, BigInteger tokenID)
{
if (!TokenExists(symbol))
{
return(false);
}
var tokenInfo = GetTokenInfo(symbol);
if (tokenInfo.Flags.HasFlag(TokenFlags.Fungible))
{
return(false);
}
var chain = RootChain;
var supply = new SupplySheet(symbol, chain, this);
if (!supply.Burn(runtimeVM.ChangeSet, 1))
{
return(false);
}
var ownerships = new OwnershipSheet(symbol);
if (!ownerships.Take(runtimeVM.ChangeSet, target, tokenID))
{
return(false);
}
var tokenTriggerResult = SmartContract.InvokeTrigger(runtimeVM, tokenInfo.Script, TokenContract.TriggerBurn, target, tokenID);
if (!tokenTriggerResult)
{
return(false);
}
var accountScript = this.LookUpAddressScript(target);
var accountTriggerResult = SmartContract.InvokeTrigger(runtimeVM, accountScript, AccountContract.TriggerBurn, target, tokenID);
if (!accountTriggerResult)
{
return(false);
}
return(true);
}