//Main loop for derivation of the argument's conclusion.
public bool ShowPremise(Argument argument, Premise toShow, List <Premise> mainInv)
{
redo = false;
for (var j = 0; j < mainInv.Count; j++)
{
inventory.Add(mainInv[j]);
}
for (var i = 0; i < argument.premises.Count; i++)
{
argumentPremises.Add(argument.premises[i]);
}
MainShow:
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
var notSolved = true;
string command;
while (notSolved)
{
Console.Write("Command: ");
string[] tokens = Console.ReadLine().Split(' ');
command = tokens[0];
switch (command)
{
case "help":
writer.ReadWholeFile("textFiles/helpShow.txt");
goto MainShow;
case "exit":
inventory.Clear();
assumeCounter = 0;
return(false);
case "redo":
inventory.Clear();
assumeCounter = 0;
redo = true;
return(false);
//Modus Ponens
case "MP":
case "mp":
var inMP = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 3))
{
break;
}
inMP = this.SetInputPremises(tokens, argument);
if (inMP == null)
{
break;
}
if (!rules.MPCheck(inMP[0], inMP[1]))
{
Console.WriteLine("Cannot perform this rule on these premises");
break;
}
var resultPremise = rules.ModusPonens(inMP[0], inMP[1]);
if (resultPremise == null)
{
break;
}
inventory.Add(resultPremise);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
//Modus Tolens
case "MT":
case "mt":
var inMT = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 3))
{
break;
}
inMT = this.SetInputPremises(tokens, argument);
if (inMT == null)
{
break;
}
if (!rules.MTCheck(inMT[0], inMT[1]))
{
Console.WriteLine("Cannot perform this rule on these premises");
break;
}
var MTresultPremise = rules.ModusTolens(inMT[0], inMT[1]);
if (MTresultPremise == null)
{
break;
}
inventory.Add(MTresultPremise);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
//Double Negation generic
case "DN":
case "dn":
var inDN = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inDN = this.SetInputPremises(tokens, argument);
if (inDN == null)
{
break;
}
if (rules.DNECheck(inDN[0]))
{
inventory.Add(rules.DNE(inDN[0]));
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
else
{
inventory.Add(rules.DNI(inDN[0]));
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
//DNE specific
case "DNE":
case "dne":
var inDNE = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inDNE = this.SetInputPremises(tokens, argument);
if (inDNE == null)
{
break;
}
if (rules.DNECheck(inDNE[0]))
{
inventory.Add(rules.DNE(inDNE[0]));
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
else
{
Console.WriteLine("DNE cannot be performed on that premise. Type 'help' for rule info.");
break;
}
//DNI specific
case "DNI":
case "dni":
var inDNI = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inDNI = this.SetInputPremises(tokens, argument);
if (inDNI == null)
{
break;
}
inventory.Add(rules.DNI(inDNI[0]));
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
case "SR":
case "sr":
var inSR = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inSR = this.SetInputPremises(tokens, argument);
if (inSR == null)
{
break;
}
inventory.Add(inSR[0].child2);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
case "SL":
case "sl":
var inSL = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inSL = this.SetInputPremises(tokens, argument);
if (inSL == null)
{
break;
}
inventory.Add(inSL[0].child1);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
case "S":
case "s":
var inS = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inS = this.SetInputPremises(tokens, argument);
if (inS == null)
{
break;
}
inventory.Add(inS[0].child2);
inventory.Add(inS[0].child1);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
case "AddR":
case "addr":
AddR:
var inAddR = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inAddR = this.SetInputPremises(tokens, argument);
if (inAddR == null)
{
break;
}
var AddRPremise = rules.AddR(inAddR[0]);
if (AddRPremise == null)
{
Console.WriteLine("That is not a valid addition.");
break;
}
else
{
inventory.Add(AddRPremise);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
case "AddL":
case "addl":
var inAddL = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inAddL = this.SetInputPremises(tokens, argument);
if (inAddL == null)
{
break;
}
var AddLPremise = rules.AddL(inAddL[0]);
if (AddLPremise == null)
{
Console.WriteLine("That is not a valid addition.");
break;
}
else
{
inventory.Add(AddLPremise);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
case "Add":
case "add":
goto AddR;
case "Adj":
case "adj":
var inAdj = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 3))
{
break;
}
inAdj = this.SetInputPremises(tokens, argument);
if (inAdj == null)
{
break;
}
inventory.Add(rules.Adj(inAdj[0], inAdj[1]));
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
case "MTP":
case "mtp":
var inMTP = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 3))
{
break;
}
inMTP = this.SetInputPremises(tokens, argument);
if (inMTP == null)
{
break;
}
var MTPPremise = rules.MTP(inMTP[0], inMTP[1]);
if (MTPPremise == null)
{
Console.WriteLine("Cannot perform this rule on these premises.");
break;
}
else
{
inventory.Add(MTPPremise);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
case "BCL":
case "bcl":
var inBCL = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inBCL = this.SetInputPremises(tokens, argument);
if (inBCL == null)
{
break;
}
var BCLPremise = rules.BCL(inBCL[0]);
if (BCLPremise == null)
{
Console.WriteLine("This rule cannot be performed on that premise.");
break;
}
else
{
inventory.Add(BCLPremise);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
case "BCR":
case "bcr":
var inBCR = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inBCR = this.SetInputPremises(tokens, argument);
if (inBCR == null)
{
break;
}
var BCRPremise = rules.BCR(inBCR[0]);
if (BCRPremise == null)
{
Console.WriteLine("This rule cannot be performed on that premise.");
break;
}
else
{
inventory.Add(BCRPremise);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
case "BC":
case "bc":
var inBC = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
inBC = this.SetInputPremises(tokens, argument);
if (inBC == null)
{
break;
}
var BCPremise1 = rules.BCL(inBC[0]);
var BCPremise2 = rules.BCR(inBC[0]);
if (BCPremise1 == null || BCPremise2 == null)
{
Console.WriteLine("This rule cannot be performed on that premise.");
break;
}
else
{
inventory.Add(BCPremise1);
inventory.Add(BCPremise2);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
case "CB":
case "cb":
var inCB = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 3))
{
break;
}
inCB = this.SetInputPremises(tokens, argument);
if (inCB == null)
{
break;
}
var CBPremise = rules.CB(inCB[0], inCB[1]);
if (CBPremise == null)
{
Console.WriteLine("This rule cannot be performed on that premise.");
break;
}
else
{
inventory.Add(CBPremise);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
case "MC1":
case "mc1":
MC1:
if (!MC1Unlocked)
{
Console.WriteLine("Solve derivation 1 of problem set 2 to unlock this rule.");
break;
}
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
var inMC1 = this.SetInputPremises(tokens, argument);
if (inMC1 == null)
{
break;
}
Console.Write("New Anticedent:");
var MC1String = Console.ReadLine();
inventory.Add(rules.MC1(inMC1[0], MC1String));
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
case "MC2":
case "mc2":
MC2:
if (!MC2Unlocked)
{
Console.WriteLine("Solve derivation 17 of problem set 2 to unlock this rule.");
break;
}
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
var inMC2 = this.SetInputPremises(tokens, argument);
if (inMC2 == null)
{
break;
}
Console.Write("New Consequent:");
var MC2String = Console.ReadLine();
inventory.Add(rules.MC2(inMC2[0], MC2String));
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
case "MC":
case "mc":
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
var inMC = this.SetInputPremises(tokens, argument);
if (inMC == null)
{
break;
}
if (inMC[0].type == 5)
{
goto MC2;
}
else
{
goto MC1;
}
case "Show":
Show:
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
var problemConstructor = new ProblemConstructor();
var newPremise = problemConstructor.MakeCustom(tokens[1]);
if (newPremise == null)
{
Console.WriteLine("Invalid premise");
break;
}
var newShow = new Show(userID);
if (newShow.ShowPremise(argument, newPremise, inventory))
{
inventory.Add(newPremise);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
break;
}
else if (newShow.GetRedo())
{
inventory.Clear();
assumeCounter = 0;
redo = true;
return(false);
}
break;
//Assume CD or ID
case "ASS":
case "ass":
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
if (assumeCounter > 0)
{
Console.WriteLine("Only 1 assume statement can be made per Show statement.");
break;
}
if (tokens[1].Equals("ID", StringComparison.CurrentCultureIgnoreCase))
{
inventory.Add(new Premise(toShow));
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
assumeCounter++;
break;
}
else if (tokens[1].Equals("CD", StringComparison.CurrentCultureIgnoreCase))
{
if (toShow.type == 1)
{
inventory.Add(toShow.anti);
Console.WriteLine(argument.GetArgument());
this.ListSheet(toShow);
assumeCounter++;
break;
}
else
{
Console.WriteLine("Argument's conlusion must be conditional in order to perform a conditional derivation");
break;
}
}
else
{
Console.WriteLine("ASS must be followed by CD or ID only.");
break;
}
//closing the ID
case "ID":
case "id":
//decides whether input is from lines or argument
var inID = new Premise[tokens.Length - 1];
if (!this.CheckTokenLength(tokens, 3))
{
break;
}
inID = this.SetInputPremises(tokens, argument);
if (inID == null)
{
break;
}
if (rules.IDCheck(inID[0], inID[1]))
{
assumeCounter--;
inventory.Clear();
return(true);
}
else
{
Console.WriteLine("Nope! Try again.");
break;
}
//direct derivation
case "DD":
case "dd":
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
try
{
var temp = Convert.ToInt32(tokens[1]);
if (inventory[temp]._Equals(toShow))
{
inventory.Clear();
return(true);
}
else
{
Console.WriteLine("Nope! Try again.");
break;
}
}
catch (Exception)
{
Console.WriteLine("Error: Premise must be a reference to a line");
break;
}
case "CD":
case "cd":
if (!this.CheckTokenLength(tokens, 2))
{
break;
}
try
{
var temp = Convert.ToInt32(tokens[1]);
if (inventory[temp]._Equals(toShow.cons))
{
assumeCounter--;
inventory.Clear();
return(true);
}
else
{
Console.WriteLine("Nope! Try again.");
break;
}
}
catch (Exception)
{
if (tokens[1].Contains("PR"))
{
try
{
if (argument.premises[Convert.ToInt32(tokens[1].Substring(2)) - 1]._Equals(toShow.cons))
{
return(true);
}
}
catch (Exception e)
{
Console.WriteLine("That is not a premise.");
Console.WriteLine(e);
break;
}
}
Console.WriteLine("Error: Premise must be a reference to a line");
break;
}
default:
if (command.Equals("show", StringComparison.CurrentCultureIgnoreCase))
{
goto Show;
}
Console.WriteLine("bad input: enter 'help' for more information.");
break;
}
}
return(true);
}
