public static Proposition Parse(string Proposition)
{
Proposition Prop = new Proposition();
string sprop = Proposition;
#region Quality and Type if Possible
if (sprop.StartsWith("All"))
{
Prop.Quantity = Quantity.All;
Prop.Type = PredicateType.A;
sprop = sprop.Substring(4);
}
else if (sprop.StartsWith("No"))
{
Prop.Quantity = Quantity.No;
Prop.Type = PredicateType.E;
Prop.Quality = false;
sprop = sprop.Substring(3);
}
else if (sprop.StartsWith("Some"))
{
Prop.Quantity = Quantity.Some;
Prop.Type = PredicateType.Undefined;
sprop = sprop.Substring(5);
}
else
{
throw new FormatException("Proposition must start with \"All\", \"Some\", or \"No\"\nCheck your proposition for errors.");
}
#endregion
if (sprop.StartsWith("["))
{
sprop = sprop.Substring(1);
Prop.Subject = sprop.Substring(0, sprop.IndexOf(']'));
sprop = sprop.Substring(sprop.IndexOf(']') + 2);
}
else { throw new FormatException("Proposition does not follow correct input format.\nCheck your proposition for errors."); }
if (sprop.StartsWith("are"))
{
Prop.CopulaWord = "are";
sprop = sprop.Substring(4);
}
else if (sprop.StartsWith("is"))
{
Prop.CopulaWord = "is";
sprop = sprop.Substring(3);
}
else { throw new FormatException("Copula must start with \"is\" or \"are\".\nCheck your proposition for errors."); }
if (sprop.StartsWith("not"))
{
Prop.Quality = false;
if (Prop.Type == PredicateType.Undefined)
{
Prop.Type = PredicateType.O;
}
sprop = sprop.Substring(4);
}
else
{
if (Prop.Type == PredicateType.Undefined)
{
Prop.Type = PredicateType.I;
}
if (Prop.Type != PredicateType.E)
{
Prop.Quality = true;
}
}
if (sprop.StartsWith("["))
{
sprop = sprop.Substring(1);
}
else { throw new FormatException("Proposition does not follow correct input format.\nCheck your proposition for errors."); }
if (sprop.StartsWith("tw are"))
{
Prop.twi = "tw are";
sprop = sprop.Substring(7);
}
else if (sprop.StartsWith("twi a"))
{
Prop.twi = "twi a";
sprop = sprop.Substring(6);
}
else if (sprop.StartsWith("twi"))
{
Prop.twi = "twi";
sprop = sprop.Substring(4);
}
else if (sprop.StartsWith("tw"))
{
Prop.twi = "tw";
sprop = sprop.Substring(3);
}
if (sprop.StartsWith("non-"))
{
Prop.nonPredicate = true;
sprop = sprop.Substring(4);
}
else
{
Prop.nonPredicate = false;
}
Prop.Predicate = sprop.Substring(0, sprop.IndexOf(']'));
sprop = sprop.Substring(sprop.IndexOf(']') + 1);
return Prop;
}
private void setOutputData(Proposition output)
{
dgvOutput.Rows.Clear();
string sprop = (!string.IsNullOrEmpty(output.twi) ? output.twi + " " : "");
sprop += output.nonPredicate ? "non-" : "";
sprop += output.Predicate;
dgvOutput.Rows.Add("Type", output.Type.ToString());
dgvOutput.Rows.Add("Quantity", (output.Quantity == Quantity.Some ? "Particular" : "Universal") + " (" + output.Quantity.ToString() + ")");
dgvOutput.Rows.Add("Quality", output.Quality ? "Positive" : "Negitive");
dgvOutput.Rows.Add("Inverted Predicate", output.nonPredicate ? "Yes (\"non-\")" : "No");
dgvOutput.Rows.Add("Subject", output.Subject);
dgvOutput.Rows.Add("Predicate", sprop);
}
private Proposition Clone()
{
Proposition P = new Proposition();
P.Quality = this.Quality;
P.Quantity = this.Quantity;
P.CopulaWord = this.CopulaWord;
P.nonPredicate = this.nonPredicate;
P.Predicate = this.Predicate;
P.Subject = this.Subject;
P.twi = this.twi;
P.Type = this.Type;
return P;
}
private Proposition ProcessAndGetIncoming()
{
Proposition Incoming = new Proposition();
try
{
Incoming = Proposition.Parse(txtInput.Text);
txtOutput.Text = Incoming.ToString();
setInputData(Incoming);
}
catch (FormatException E)
{
MessageBox.Show(E.Message, "Error");
}
listBox1.Items.Clear();
listBox1.Items.Add(Incoming.ToString());
return Incoming;
}