private object EvaluateValueReferenceExpression(ValueReferenceStatementNode theValueReferenceExpression)
{
if (theValueReferenceExpression.IsSingletonValue)
{
var singletonVariableName = theValueReferenceExpression.VariableName;
var singletonValue = this.snapshot.GetSingletonLabelByVariableName(singletonVariableName.Name);
return(singletonValue.Value);
}
else if (theValueReferenceExpression.IsAggregateValue)
{
var aggregateVariableName = theValueReferenceExpression.VariableName;
var aggregateVariableOffset = theValueReferenceExpression.ValueOffset;
int offsetValue;
if (aggregateVariableOffset.IsLiteral)
{
offsetValue = aggregateVariableOffset.Literal.Value;
}
else
{
Debug.Assert(aggregateVariableOffset.IsCounterReference);
var counterReference = aggregateVariableOffset.Counter;
var counterContext = this.context.GetCounterContextByName(counterReference.CounterName);
offsetValue = counterContext.CurrentValue;
}
var aggregateValue = this.snapshot.GetAggregateLabelByVariableName(aggregateVariableName.Name);
return(aggregateValue.GetValueAt(offsetValue - 1));
}
else
{
throw new NotImplementedException();
}
}
private object EvaluateValueReferenceExpression(ValueReferenceStatementNode theValueReferenceExpression)
{
if (theValueReferenceExpression.IsSingletonValue)
{
var singletonVariableName = theValueReferenceExpression.VariableName;
var singletonValue = _snapshot.GetSingletonLabelByVariableName(singletonVariableName.Name);
return(singletonValue.Value);
}
else if (theValueReferenceExpression.IsAggregateValue)
{
var aggregateVariableName = theValueReferenceExpression.VariableName;
var aggregateVariableOffset = theValueReferenceExpression.ValueOffset;
Debug.Assert(aggregateVariableOffset.IsLiteral);
var offsetValue = aggregateVariableOffset.Literal.Value;
var aggregateValue = _snapshot.GetAggregateLabelByVariableName(aggregateVariableName.Name);
return(aggregateValue.GetValueAt(offsetValue - 1));
}
else
{
throw new NotImplementedException();
}
}