/// <summary>
/// Visits a String expression
/// </summary>
/// <param name="stringExpression"></param>
protected virtual void VisitStringExpression(StringExpression stringExpression)
{
}
/// <summary>
/// Evaluates the current input as a string
/// </summary>
/// <returns></returns>
public StringExpression EvaluateString()
{
StringExpression retVal = null;
int backup = Index;
if (LookAhead("'"))
{
Match("'");
int start = Index;
while (!LookAhead("'") && Index < Buffer.Length)
{
Index = Index + 1;
}
if (LookAhead("'"))
{
Match("'");
retVal = new StringExpression(Root, RootLog, new String(Buffer, start, Index - start - 1), start - 1,
Index);
}
else
{
Index = backup;
}
}
return retVal;
}