private void InjectMemberFromUnitySearchMethod(MonoBehaviour script, MemberInfo memberInfo, SearchMethods searchMethod, bool isOptional)
{
Type componentType = ReflectionUtils.GetTypeOfFieldOrProperty(script, memberInfo);
// For testing, searching in the scene hierarchy using a Unity method can be simulated to return a mockup for a component.
object component = GetComponentFromUnitySearchMethodMockups(script, searchMethod, componentType);
if (component == null)
{
// No mockup found, thus use the real Unity search method.
component = UniInjectUtils.InvokeUnitySearchMethod(script, searchMethod, componentType);
}
if (component != null)
{
if (memberInfo is FieldInfo)
{
(memberInfo as FieldInfo).SetValue(script, component);
}
else if (memberInfo is PropertyInfo)
{
(memberInfo as PropertyInfo).SetValue(script, component);
}
else
{
throw new Exception($"Cannot inject member {script.name}.{memberInfo}."
+ $" Only Fields and Properties are supported for component injection via Unity methods.");
}
}
else if (!isOptional)
{
throw new Exception($"Cannot inject member {script.name}.{memberInfo.Name}."
+ $" No component of type {componentType} found using method {searchMethod}");
}
}
private static int CheckInjectableFromUnitySearchMethod(MonoBehaviour script, Type type, InjectionData injectionData)
{
if (injectionData.InjectionKeys.Length > 1)
{
// If there are multiple keys, then it must be for a method or constructor with multiple parameters
LogErrorCannotBeInjected($"The search method {injectionData.searchMethod} can only be used on a field or property.",
script, type, injectionData.MemberInfo);
return(1);
}
object injectionKey = injectionData.InjectionKeys[0];
if (!(injectionKey is Type))
{
LogErrorCannotBeInjected($"The search method {injectionData.searchMethod} can not be used with a custom key.",
script, type, injectionData.MemberInfo);
return(1);
}
Type componentType = injectionKey as Type;
UnityEngine.Object searchResult = UniInjectUtils.InvokeUnitySearchMethod(script, injectionData.searchMethod, componentType);
if (searchResult == null)
{
LogErrorCannotBeInjected($"No instance of {componentType} found using {injectionData.searchMethod}.",
script, type, injectionData.MemberInfo);
return(1);
}
return(0);
}
