public void RegisterLanguageProvider(string assemblyName, string typeName, bool overrideExistingIds, params string[] identifiers)
{
Contract.RequiresNotNull(identifiers, "identifiers");
LanguageProviderDesc singleton_desc;
bool add_singleton_desc = false;
string aq_name = MakeAssemblyQualifiedName(typeName, assemblyName);
lock (_languageProvidersLock) {
if (!_languageTypes.TryGetValue(aq_name, out singleton_desc)) {
add_singleton_desc = true;
singleton_desc = new LanguageProviderDesc(typeName, assemblyName);
}
// check for conflicts:
if (!overrideExistingIds) {
for (int i = 0; i < identifiers.Length; i++) {
LanguageProviderDesc desc;
if (_languageIds.TryGetValue(identifiers[i], out desc) && !ReferenceEquals(desc, singleton_desc)) {
throw new InvalidOperationException("Conflicting Ids");
}
}
}
// add singleton LP-desc:
if (add_singleton_desc)
_languageTypes.Add(aq_name, singleton_desc);
// add id mapping to the singleton LP-desc:
for (int i = 0; i < identifiers.Length; i++) {
_languageIds[identifiers[i]] = singleton_desc;
}
}
}
/// <summary>
/// Throws an exception on failure.
/// </summary>
/// <exception cref="ArgumentNullException"><paramref name="type"/></exception>
/// <exception cref="ArgumentException"><paramref name="type"/></exception>
/// <exception cref="MissingTypeException"><paramref name="languageId"/></exception>
/// <exception cref="InvalidImplementationException">The language provider's implementation failed to instantiate.</exception>
public LanguageProvider GetLanguageProvider(Type type)
{
Contract.RequiresNotNull(type, "type");
if (!type.IsSubclassOf(typeof(LanguageProvider))) throw new ArgumentException("Invalid type - should be subclass of LanguageProvider"); // TODO
LanguageProviderDesc desc = null;
lock (_languageProvidersLock) {
if (!_languageTypes.TryGetValue(type.AssemblyQualifiedName, out desc)) {
desc = new LanguageProviderDesc(type);
_languageTypes[type.AssemblyQualifiedName] = desc;
}
}
if (desc != null) {
return desc.LoadProvider(this);
}
// not found, not registered:
throw new ArgumentException(Resources.UnknownLanguageProviderType);
}
