public ProgramState Execute(ProgramState ps)
{
ExecutionStack executionStack = ps.GetExecutionStack();
executionStack.Push(right);
executionStack.Push(left);
return(ps);
}
public ProgramState Execute(ProgramState ps)
{
SymbolTable symbolTable = ps.GetSymbolTable();
ExecutionStack executionStack = ps.GetExecutionStack();
int result = expression.Evaluate(symbolTable);
if (result == 0)
{
executionStack.Push(selse);
}
else
{
executionStack.Push(sthen);
}
return(ps);
}
public static EXECUTION_RESULT?EQ_VERIFY(ref ExecutionStack stack)
{
if (EQUALS(ref stack) != null)
{
stack.Push(false);
}
return(Verify.VERIFY(ref stack));
}
public static EXECUTION_RESULT?CHECKLOCKTIME_VERIFY(ref ExecutionStack stack)
{
if (CHECKLOCKTIME(ref stack) != null)
{
stack.Push(false);
}
return(VERIFY(ref stack));
}
public static EXECUTION_RESULT?EQUALS(ref ExecutionStack stack)
{
if (stack.Count < 2)
{
return(EXECUTION_RESULT.INVALID_STACK);
}
stack.Push(System.Linq.Enumerable.SequenceEqual(stack.Pop(), stack.Pop()));
return(null);
}
public static EXECUTION_RESULT?DUP(ref ExecutionStack stack)
{
if (!stack.Any())
{
return(EXECUTION_RESULT.INVALID_STACK);
}
var item = stack.Pop();
stack.Push(item, item);
return(null);
}
protected override void Run(CancellationToken cancellationToken)
{
IOperation next;
OperationCollection coll;
IAtomicOperation operation;
while (ExecutionStack.Count > 0)
{
cancellationToken.ThrowIfCancellationRequested();
next = ExecutionStack.Pop();
if (next is OperationCollection)
{
coll = (OperationCollection)next;
for (int i = coll.Count - 1; i >= 0; i--)
{
if (coll[i] != null)
{
ExecutionStack.Push(coll[i]);
}
}
}
else if (next is IAtomicOperation)
{
operation = (IAtomicOperation)next;
try {
next = operation.Operator.Execute((IExecutionContext)operation, cancellationToken);
}
catch (Exception ex) {
ExecutionStack.Push(operation);
if (ex is OperationCanceledException)
{
throw ex;
}
else
{
throw new OperatorExecutionException(operation.Operator, ex);
}
}
if (next != null)
{
ExecutionStack.Push(next);
}
if (operation.Operator.Breakpoint)
{
Log.LogMessage(string.Format("Breakpoint: {0}", operation.Operator.Name != string.Empty ? operation.Operator.Name : operation.Operator.ItemName));
Pause();
}
}
}
}
public static EXECUTION_RESULT?CHECKSIG(ref ExecutionStack stack)
{
if (stack.Transaction == null)
{
return(EXECUTION_RESULT.NO_TRANSACTION_GIVEN);
}
if (stack.Count < 2)
{
return(EXECUTION_RESULT.INVALID_STACK);
}
//Verify if signature is valid
stack.Push(new CryptoRSA(stack.Pop()).Verify(stack.Transaction.Hash(), stack.Pop()));
return(null);
}
protected override void Run(CancellationToken cancellationToken)
{
IOperation next;
OperationCollection coll;
IAtomicOperation operation;
while (ExecutionStack.Count > 0)
{
cancellationToken.ThrowIfCancellationRequested();
next = ExecutionStack.Pop();
if (next is OperationCollection)
{
coll = (OperationCollection)next;
for (int i = coll.Count - 1; i >= 0; i--)
{
if (coll[i] != null)
{
ExecutionStack.Push(coll[i]);
}
}
}
else if (next is IAtomicOperation)
{
operation = (IAtomicOperation)next;
try {
next = operation.Operator.Execute((IExecutionContext)operation, cancellationToken);
}
catch (Exception ex) {
ExecutionStack.Push(operation);
if (ex is OperationCanceledException)
{
throw;
}
else
{
throw new OperatorExecutionException(operation.Operator, ex);
}
}
if (next != null)
{
ExecutionStack.Push(next);
}
}
}
}
public static EXECUTION_RESULT?CHECKLOCKTIME(ref ExecutionStack stack)
{
if (stack.Transaction == null)
{
return(EXECUTION_RESULT.NO_TRANSACTION_GIVEN);
}
if (stack.Count() < 1)
{
return(EXECUTION_RESULT.INVALID_STACK);
}
if (stack.Peek().Length != 4)
{
return(EXECUTION_RESULT.INVALID_BYTE_SIZE);
}
uint size = stack.PopUInt();
stack.Push(stack.Transaction.lockTime >= size);
return(null);
}
public static void MIN(ref ExecutionStack stack) => stack.Push(System.Math.Min(stack.PopShort(), stack.PopShort()));
public static void ABS(ref ExecutionStack stack) => stack.Push(System.Math.Abs(stack.PopShort()));
public static void PUBKEY_HASH(ref ExecutionStack stack) => stack.Push(stack.Script.DequeueRange(Script.AddressSize));
public static void SIGNATURE(ref ExecutionStack stack) => stack.Push(stack.Script.DequeueRange(Script.SignatureSize));
public static void PUBKEY(ref ExecutionStack stack) => stack.Push(stack.Script.DequeueRange(Script.PubKeySize));
public static void PUSH_SHORT(ref ExecutionStack stack) => stack.Push(System.BitConverter.ToInt16(stack.Script.DequeueRange(2)));
public static void EQ_NUM(ref ExecutionStack stack) => stack.Push(stack.PopShort() == stack.PopShort());
public static void GREATERTHAN(ref ExecutionStack stack) => stack.Push(stack.PopShort() > stack.PopShort());
public static void LESSTHAN(ref ExecutionStack stack) => stack.Push(stack.PopShort() < stack.PopShort());
public static void ADD(ref ExecutionStack stack) => stack.Push((short)(stack.PopShort() + stack.PopShort()));
public static EXECUTION_RESULT?HASH_160(ref ExecutionStack stack)
{
stack.Push(Hash.HASH160(stack.Pop()));
return(null);
}
public static EXECUTION_RESULT?RIPEMD_160(ref ExecutionStack stack)
{
stack.Push(Hash.RIPEMD160(stack.Pop()));
return(null);
}
public static void SUBSTRACT(ref ExecutionStack stack) => stack.Push((short)(stack.PopShort() - stack.PopShort()));
public static void OP_9(ref ExecutionStack stack) => stack.Push((short)9);
public static void LESSOREQUAL(ref ExecutionStack stack) => stack.Push(stack.PopShort() <= stack.PopShort());
public static void OP_16(ref ExecutionStack stack) => stack.Push((short)16);
public static void GREATEROREQUAL(ref ExecutionStack stack) => stack.Push(stack.PopShort() >= stack.PopShort());
public static void PUSHDATA_1(ref ExecutionStack stack) => stack.Push(stack.Script.DequeueRange(stack.Script.Dequeue()));
public static EXECUTION_RESULT?EQ_VERIFY_NUM(ref ExecutionStack stack)
{
stack.Push(stack.PopShort() == stack.PopShort());
return(Verify.VERIFY(ref stack));
}
public static void PUSH_UINT(ref ExecutionStack stack) => stack.Push(System.BitConverter.ToUInt32(stack.Script.DequeueRange(4)));