/// <summary>
/// Constructs a new automaton for the given formula.
/// </summary>
/// <param name="formula"></param>
/// <param name="options"></param>
/// <param name="token"></param>
/// <returns></returns>
public static BuchiAutomata FormulaToBA(string formula, string options, IToken token)
{
if (formula.Length > 4095)
{
throw new ParsingException("LTL2BA limitation: formula must not be longer than 4095 characters", token);
}
//formula = formula.Replace(" tau ", Common.Classes.Ultility.Constants.TAU);
try
{
ltl2ba.main.ConvertFormula(formula, options);
BuchiAutomata BA = BuildBA();
//check whether it is syntaically safe.
ltl2ba.Node LTL = ParseLTL(formula, options, token);
BA.SyntacticSafety = LivenessChecking.HasSyntaxSafeOperator(LTL);
return(BA);
}
catch (Exception ex)
{
throw new ParsingException("Invalid LTL formula: " + ex.Message, token);
}
}
private static LTLNode TranslateLTL(ltl2ba.Node LTLHeadNode)
{
type_t type = new type_t();
LTLNode node = new LTLNode(type, TranslateLTL(LTLHeadNode.lft), TranslateLTL(LTLHeadNode.rgt));
return(node);
}