public override void ParseFormel(List <char> formel)
{
if (formel.First() != '!')
{
throw new Exception("Missing !");
}
else
{
formel.RemoveAt(0);
if (formel.First() == '!')
{
next = new NegationExpression();
next.ParseFormel(formel);
}
else if (formel.First() == '(')
{
next = new BracketsExpression();
next.ParseFormel(formel);
}
else if (formel.First() > 'a' && formel.First() < 'z')
{
next = new VariableExpression();
next.ParseFormel(formel);
}
}
}
public override void ParseFormel(List <char> formel)
{
if (formel.First() == '(')
{
next = new TermExpression();
formel.RemoveAt(0);
next.ParseFormel(formel);
if (formel.First() != ')')
{
throw new Exception("Missing )");
}
}
else
{
throw new ArgumentException("Unexpected Exception");
}
}
public override void ParseFormel(List <char> formel)
{
if (formel.First() == '!')
{
left = new NegationExpression();
left.ParseFormel(formel);
}
else if (formel.First() == '(')
{
left = new BracketsExpression();
left.ParseFormel(formel);
}
else if (char.IsLetter(formel.First()))
{
left = new VariableExpression();
left.ParseFormel(formel);
}
else
{
throw new ArgumentException("Unexpected Exception");
}
if (formel.Count > 0)
{
if (formel.First() == ')')
{
return;
}
if (formel.First() != '&' && formel.First() != '|' && formel.First() != '=' && formel.First() != '>')
{
throw new ArgumentException("Missing &, |, =, >");
}
operation = formel.First();
formel.RemoveAt(0);
right = new TermExpression();
right.ParseFormel(formel);
}
}
