private Dictionary <string, TopLevelConstruct> CreateFullyQualifiedLookup(IList <TopLevelConstruct> code)
{
using (new PerformanceSection(""))
{
HashSet <string> namespaces = new HashSet <string>();
Dictionary <string, TopLevelConstruct> lookup = new Dictionary <string, TopLevelConstruct>();
bool mainFound = false;
foreach (TopLevelConstruct item in code)
{
string ns;
string memberName;
if (item is FunctionDefinition)
{
FunctionDefinition fd = (FunctionDefinition)item;
ns = fd.Namespace;
memberName = fd.NameToken.Value;
if (memberName == "main")
{
if (mainFound)
{
throw new ParserException(item.FirstToken, "Multiple main methods found.");
}
mainFound = true;
lookup["~"] = item;
}
}
else if (item is ClassDefinition)
{
ClassDefinition cd = (ClassDefinition)item;
ns = cd.Namespace;
memberName = cd.NameToken.Value;
// TODO: nested classes, constants, and enums.
}
else if (item is EnumDefinition)
{
EnumDefinition ed = (EnumDefinition)item;
ns = ed.Namespace;
memberName = ed.Name;
}
else if (item is ConstStatement)
{
ConstStatement cs = (ConstStatement)item;
ns = cs.Namespace;
memberName = cs.Name;
}
else
{
string error = "This sort of expression cannot exist outside of function or field definitions.";
throw new ParserException(item.FirstToken, error);
}
if (ns.Length > 0)
{
string accumulator = "";
foreach (string nsPart in ns.Split('.'))
{
if (accumulator.Length > 0)
{
accumulator += ".";
}
accumulator += nsPart;
namespaces.Add(accumulator);
}
}
string fullyQualifiedName = (ns.Length > 0 ? (ns + ".") : "") + memberName;
if (lookup.ContainsKey(fullyQualifiedName))
{
// TODO: token information from two locations
throw new ParserException(item.FirstToken, "Two items have identical fully-qualified names: '" + fullyQualifiedName + "'");
}
lookup[fullyQualifiedName] = item;
}
foreach (string key in lookup.Keys)
{
if (namespaces.Contains(key))
{
throw new ParserException(lookup[key].FirstToken, "This name collides with a namespace definition.");
}
}
// Go through and fill in all the partially qualified namespace names.
foreach (string ns in namespaces)
{
Namespace nsInstance = new Namespace(null, ns, null, null, null);
string possibleLibraryName = ns.Split('.')[0];
TODO.EnglishLocaleAssumed();
Library library = this.parser.LibraryManager.GetLibraryFromName(possibleLibraryName);
if (library != null)
{
// TODO: once you get rid of this line, make the Library setter protected
nsInstance.Library = library;
}
lookup[ns] = nsInstance;
}
if (lookup.ContainsKey("~"))
{
FunctionDefinition mainFunc = (FunctionDefinition)lookup["~"];
if (mainFunc.ArgNames.Length > 1)
{
throw new ParserException(mainFunc.FirstToken, "The main function must accept 0 or 1 arguments.");
}
}
else
{
throw new InvalidOperationException("No main(args) function was defined.");
}
return(lookup);
}
}