// reads a bare collection type expression
// which might represent a bare named type expression
// or an indefinitely nested collection of element type, represented as bare named type expression
private IStonType ReadBareCollection(StonTokenReader reader, string preread, ref bool collectionStarted)
{
IStonType result = ReadBareNamedType(reader, preread);
if (result == null)
{
return(null);
}
// each collection suffix adds one more nesting of collection
while (reader.Peek().HasChartype(StonChartype.CollectionSuffixBegin))
{
if (!reader.ReadCollectionTypeSuffix(true))
{
collectionStarted = true;
break;
}
else
{
result = ElementFactory.CreateCollectionType(result);
}
}
return(result);
}
// reads a wrapped collection type expression
// which might represent a wrapped named type expression
// or an indefinitely nested collection of element type, represented as wrapped named type expression
private IStonType ReadWrappedCollection(StonTokenReader reader)
{
IStonType result = ReadWrappedNamedType(reader);
// each collection suffix adds one more nesting of collection
while (reader.Peek().HasChartype(StonChartype.CollectionSuffixBegin))
{
reader.ReadCollectionTypeSuffix(false);
result = ElementFactory.CreateCollectionType(result);
}
return(result);
}