internal static SymbolTable CreatePathSymbols(SymbolTable symbols, IEnumerable <String> fragments)
{
return(((SymbolTableExpression)EnumerableEx.Generate(
Tuple.Create(fragments, symbols.ResolveModule()),
_ => _.Item1.Any(),
_ => Tuple.Create(_.Item1.Skip(1), _.Item1.First()
.Let(f => _.Item2.ExistsKey(f) && _.Item2.Resolve(f) is SymbolTableExpression
? ((SymbolTableExpression)_.Item2.Resolve(f)).Symbols
: new SymbolTable().Apply(
s => s.MarkAsModule(),
s => _.Item2[f] = YacqExpression.SymbolTable(s)
)
)),
_ => _.Item2
).Last().Resolve(fragments.Last())).Symbols);
}