public TypeSyntax Type0(Typ typ)
{
bool aliasable;
if (!$"{Namespace}.".StartsWith($"{typ.Namespace}."))
{
AddImport(typ.Namespace);
aliasable = false;
}
else
{
aliasable = true;
}
SimpleNameSyntax result = IdentifierName(typ.Name);
if (typ.IsDeprecated)
{
result = result.WithIdentifier(result.Identifier.WithPragmaWarning(PragmaWarnings.Obsolete));
}
if (typ.GenericArgTyps != null)
{
// Generic typ, so return a generic name by recursively calling this method on all type args.
result = GenericName(result.Identifier, TypeArgumentList(SeparatedList(typ.GenericArgTyps.Select(Type))));
}
if (aliasable)
{
// Annotate this type to show it might need fully aliasing if there is a name collision.
result = result.WithAdditionalAnnotations(new SyntaxAnnotation(AliasableType, typ.Namespace));
}
return(result);
}
private TypeSyntax Type0(Typ typ)
{
string namespaceAlias;
if (!RequireFullyQualifiedTyp(typ) && $"{Namespace}.".StartsWith($"{typ.Namespace}."))
{
// Within the current namespace and not required to force a fully-qualified name; no import required.
namespaceAlias = null;
}
else if (!_namespaceAliases.TryGetValue(typ.Namespace, out namespaceAlias))
{
// A namespace that hasn't been seen before. Create an alias for it.
if (!_wellKnownNamespaceAliases.TryGetValue(typ.Namespace, out var rawAlias))
{
// If it's not a well-known namespace (e.g. "System"), then create an alias
// using the first character of each namespace part.
// TODO: Ensure single-character aliased are not generated; they cause a compilation error.
rawAlias = typ.Namespace
.Split('.', StringSplitOptions.RemoveEmptyEntries)
.Select(x => char.ToLowerInvariant(x[0]))
.Aggregate("", (a, c) => a + c);
}
// Make sure all aliases are unique by adding a numeric suffix if necessary.
int index = 0;
namespaceAlias = rawAlias;
while (_namespaceAliasesOnly.Contains(namespaceAlias))
{
namespaceAlias = $"{rawAlias}{++index}";
}
// Record the alias for later.
_namespaceAliases.Add(typ.Namespace, namespaceAlias);
_namespaceAliasesOnly.Add(namespaceAlias);
}
SimpleNameSyntax result = IdentifierName(typ.Name);
if (typ.IsDeprecated)
{
result = result.WithIdentifier(result.Identifier.WithPragmaWarning(PragmaWarnings.Obsolete));
}
if (typ.GenericArgTyps != null)
{
// Generic typ, so return a generic name by recursively calling this method on all type args.
result = GenericName(result.Identifier, TypeArgumentList(SeparatedList(typ.GenericArgTyps.Select(Type))));
}
// Return the final TypeSyntax, aliased or not as required.
return(namespaceAlias == null ? (TypeSyntax)result : AliasQualifiedName(namespaceAlias, result));
}
public override TypeSyntax Type(Typ typ) => base.Type(typ) ?? Type0(typ);
public Array(Typ elementTyp) => ElementTyp = elementTyp;
