public static (InjectionLayer, InjectableAttribute) GetInjectionLayer(FieldInfo fieldInfo)
{
InjectableAttribute injectableAttribute = fieldInfo.FieldType.GetCustomAttribute <InjectableAttribute>();
if (injectableAttribute == null)
{
throw Log.Exception($"Class <b>{fieldInfo.FieldType.Name}</b> is missing <b>Injectable</b> attribute");
}
Type type = injectableAttribute.Layer;
if (injectionLayers.ContainsKey(type))
{
return(injectionLayers[type], injectableAttribute);
}
CreateLayer(type);
return(GetInjectionLayer(fieldInfo));
}
public void InjectIntoField(FieldInfo fieldInfo, InjectableAttribute injectableAttribute, object @object)
{
object injectedInstance;
if (injectableAttribute.Singleton)
{
if (dependencies.ContainsKey(fieldInfo.FieldType))
{
injectedInstance = dependencies[fieldInfo.FieldType];
}
else
{
if (fieldInfo.FieldType.IsSubclassOf(typeof(MonoBehaviour)))
{
injectedInstance = Object.FindObjectOfType(fieldInfo.FieldType);
if (injectedInstance == null)
{
injectedInstance = new GameObject().AddComponent(fieldInfo.FieldType);
MonoBehaviour.DontDestroyOnLoad(((MonoBehaviour)injectedInstance).gameObject);
}
}
else
{
injectedInstance = Activator.CreateInstance(fieldInfo.FieldType);
}
}
if (injectedInstance == null)
{
throw Log.Exception(
$"Something went wrong while trying to assign " +
$"Service of type <b>{fieldInfo.FieldType}</b>");
}
dependencies[fieldInfo.FieldType] = injectedInstance;
// Track all singletons
if (!singletons.Contains(injectedInstance))
{
singletons.Add(injectedInstance);
}
// Track references to this singleton injected instance
if (references.ContainsKey(injectedInstance))
{
if (references[injectedInstance].Contains(@object))
{
throw Log.Exception(
$"Trying to use the same Service of type " +
$"<b>{fieldInfo.FieldType}</b> twice in <b>{@object}</b>");
}
references[injectedInstance].Add(@object);
}
else
{
references[injectedInstance] = new List <object> {
@object
};
}
}
else
{
if (fieldInfo.FieldType.IsSubclassOf(typeof(MonoBehaviour)))
{
throw Log.Exception($"Non-Singleton Monobehaviour support is not added yet!"
+ $"Please change <b>{fieldInfo.FieldType.Name}</b> to be a <b>Singleton</b> Injectable");
}
// TODO: Add Monobehaviour support
injectedInstance = Activator.CreateInstance(fieldInfo.FieldType);
Log.Write($"Non-Singleton <b>{injectedInstance.GetType().Name}</b> was created");
}
fieldInfo.SetValue(@object, injectedInstance);
if (injectableAttribute.Singleton)
{
Log.Write($"Injected <i>Singleton</i> instance <b>{injectedInstance.GetType().Name}</b> " +
$"into <b>{@object.GetType().Name}</b> -- " +
$"Has <b>{references[injectedInstance].Count}</b> reference(s)");
}
else
{
Log.Write($"Created instance <b>{injectedInstance.GetType().Name}</b> -- " +
$"Was injected into <b>{@object.GetType().Name}</b>");
}
}
