private int ParseEmitOperation(idScriptParser parser, int a, WindowExpressionOperationType opType, int priority, out WindowExpressionOperation op)
{
int b = ParseExpressionPriority(parser, priority);
return EmitOperation(a, b, opType, out op);
}
private int EmitOperation(object a, int b, WindowExpressionOperationType opType, out WindowExpressionOperation op)
{
int i = _expressionRegisters.Count;
_registerIsTemporary[i] = true;
_expressionRegisters.Add(0);
op = new WindowExpressionOperation();
op.Type = opType;
op.A = a;
op.B = b;
op.C = i;
_ops.Add(op);
return op.C;
}