private CodeTypeContainer GetNextDBusType(StringReader sr, Stack <CodeTypeContainer> containers, CodeNamespace @namespace, ICodeDelegate @delegate)
{
CodeTypeContainer container;
int code;
switch (code = sr.Read())
{
case '(': // STRUCT
container = CodeTypeContainer.CreateStruct();
containers.Push(container);
var i = 1;
do
{
var type = GetNextDBusType(sr, containers, @namespace, @delegate);
// Seeing ourselves signals that we are complete
if (type == container)
{
break;
}
// Add each member as a property
var property = Declare.Property("Item" + i++, type.Reference);
container.Members.Add(property.BackingField);
container.Members.Add(property);
} while (true);
// Empty structures are not allowed; there must be at least one type code between
// the parentheses. [1]
// [1] http://dbus.freedesktop.org/doc/dbus-specification.html#container-types
if (container.Members.Count == 0)
{
throw new InvalidDataException("Empty structures are not allowed; " +
"there must be at least one type code between the parentheses.");
}
var j = 2;
var name = @delegate.Name + "Data";
while (@namespace.ContainsTypeName(name))
{
name = @delegate.Name + "Data" + j++;
}
container.Name = name;
@namespace.Types.Add(container);
return(container);
case 'a': // ARRAY
container = CodeTypeContainer.CreateArray();
containers.Push(container);
// The array type code must be followed by a single complete type. [1]
var nextType = GetNextDBusType(sr, containers, @namespace, @delegate);
if (GetContainerType(nextType) == Container.DictEntryArray && !nextType.IsComplete)
{
nextType.IsComplete = true;
return(nextType);
}
containers.Pop();
container.SetArrayElementType(nextType);
return(container);
case '{': // DICT_ENTRY
// Implementations must not accept dict entries outside of arrays... [1]
if (GetContainerType(containers.Pop()) != Container.Array)
{
throw new InvalidDataException("DICT_ENTRY must occur in an array. e.g.: type=\"a{us}\"");
}
container = CodeTypeContainer.CreateIDictionary();
containers.Push(container);
var key = GetNextDBusType(sr, containers, @namespace, @delegate);
// ...the first single complete type (the "key") must be a basic type rather than
// a container type. [1]
if (GetContainerType(key) != Container.None && key.Name != typeof(object).ToString())
{
throw new InvalidDataException("The key for DICT_ENTRY must be a basic type.");
}
var value = GetNextDBusType(sr, containers, @namespace, @delegate);
container.TypeArguments.Add(key.Reference);
container.TypeArguments.Add(value.Reference);
containers.Pop();
ImportNamespaces(container.RequiredImports);
return(container);
case ')': // STRUCT closing delimiter
return(containers.Pop());
case '}': // DICT_ENTRY closing delimiter
return(containers.Pop());
case -1: // Stream end
Messenger.SendWarning(this, "Reached end of stream.");
return(containers.Pop());
default: // Basic types
return(GetBasicType(code));
}
}
