/// <summary>
/// Used to predict the next correct tokens
/// </summary>
/// <returns>A list of predictions</returns>
public List<string> Predict(Chart chart)
{
List<string> tokens = new List<string>();
foreach(ActiveItem ai in this.Value)
{
if (ai.Seq.Count > ai.Dot)
{
Symbol s = ai.Seq[ai.Dot];
if (s is SymbolKS)
{
SymbolKS sks = (SymbolKS)s;
if (sks.Tokens.Length > 0)
{
tokens.Add(sks.Tokens[0]);
}
}
else if (s is SymbolKP)
{
SymbolKP skp = (SymbolKP)s;
if (skp.Tokens.Length > 0)
{
// TODO check if correct, before [0]
foreach (Symbol newSymbol in skp.Tokens)
{
if (newSymbol is SymbolKS)
{
// TODO is this correct?
tokens.AddRange(((SymbolKS)newSymbol).Tokens);
}
else if (newSymbol is SymbolBind)
{
tokens.Add("&+");
}
else if (newSymbol is SymbolSoftBind)
{
}
else if (newSymbol is SymbolSoftSpace)
{
}
else if (newSymbol is SymbolCapit)
{
tokens.Add("&|");
}
else if (newSymbol is SymbolAllCapit)
{
tokens.Add("&|");
}
else
{
}
}
}
}
else if (s is SymbolLit)
{
SymbolLit slit = (SymbolLit)s;
int arg = ai.Args[slit.Arg];
if (arg == -1)
{
// String
tokens.Add("\"STRING\"");
}
else if (arg == -2)
{
// Int
tokens.Add("123");
}
else if (arg == -3)
{
// Float
tokens.Add("3.14");
}
else if (arg == -4)
{
// Var
tokens.Add("\"VARIABLE\"");
}
}
else if (s is SymbolCat)
{
SymbolCat scat = (SymbolCat)s;
int fid = ai.Args[scat.Arg];
List<Production> prods = chart.ExpandForest(fid);
foreach(Production p in prods)
{
if (p is ProductionApply)
{
var papp = (ProductionApply)p;
}
}
}
}
}
return tokens;
}
public List<string> Predict2(Chart chart)
{
List<string> tokens = new List<string>();
foreach(ActiveItem ai in this.Value)
{
foreach(int arg in ai.Args)
{
// Get all the arguments
foreach(Production p in chart.ExpandForest(arg))
{
// TODO
}
}
}
return tokens;
}
/// <summary>
/// Makes a list of trees for a certain category with help of the current chart.
/// </summary>
/// <param name="cat">The category.</param>
/// <param name="chart">The current chart.</param>
/// <returns>A list of trees.</returns>
public List<Tree> MkTreesForCat(int cat, Chart chart)
{
List<Tree> temp = new List<Tree>();
foreach (Production p in chart.ExpandForest(cat))
{
temp.AddRange(this.MkTreesForProduction(p, chart));
}
return temp;
}
