private MethodInfoCache FindConstructorMethodRecursive(Type type)
{
MethodInfo constructorMethodInfo = null;
MethodInfo[] allStaticMethods = type.GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static);
foreach (var info in allStaticMethods)
{
if (info.GetCustomAttributes(typeof(ConstructorAttribute), true).Length <= 0)
{
continue;
}
// Does it return an instance of itself?
if (info.ReturnType == type)
{
constructorMethodInfo = info;
break;
}
}
if (constructorMethodInfo == null)
{
return(null);
}
ParameterInfo[] methodParameters = constructorMethodInfo.GetParameters();
object[] injectAttributes = constructorMethodInfo.GetCustomAttributes(typeof(InjectAttribute), true);
InjectAttribute injectAttribute = null;
if (injectAttributes.Length > 0)
{
injectAttribute = (InjectAttribute)injectAttributes[0];
}
ParameterInfoCache[] parameters = GetParameterInfoCache(constructorMethodInfo.GetParameters());
var constructorMethodInfoCache = new MethodInfoCache(constructorMethodInfo, injectAttribute, parameters);
return(constructorMethodInfoCache);
}
protected virtual List <MethodInfoCache> FindMethodsRecursive(Type type, List <MethodInfoCache> methods = null)
{
if (methods == null)
{
methods = new List <MethodInfoCache>();
}
var subMethods = type.GetMethods(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic);
foreach (var info in subMethods)
{
if (info.IsSpecialName || !MightHaveInjectAttribute(info))
{
continue;
}
object[] injectAttributes = info.GetCustomAttributes(typeof(InjectAttribute), true);
if (injectAttributes.Length <= 0)
{
continue;
}
InjectAttribute injectAttribute = (InjectAttribute)injectAttributes[0];
MethodInfoCache methodInfoCache = new MethodInfoCache(info, injectAttribute, GetParameterInfoCache(info.GetParameters()));
methods.Add(methodInfoCache);
}
if (IsRootType(type.BaseType))
{
return(methods);
}
FindMethodsRecursive(type.BaseType, methods);
return(methods);
}
private void InjectMethod(IContainer container, IInjectContext parentContext, Type type, object obj, MethodInfoCache method)
{
ParameterInfoCache[] parameters = method.Parameters;
if (parameters == null || parameters.Length == 0)
{
method.MethodInfo.Invoke(obj, null);
return;
}
object[] paramObjects = new object[parameters.Length];
for (int i = 0; i < parameters.Length; i++)
{
ParameterInfoCache parameter = parameters[i];
ParameterInfo parameterInfo = parameter.ParameterInfo;
// Can we resolve this?
if (container.HasBindingFor(parameterInfo.ParameterType))
{
// Prevent recursive / circular dependency...
if (parameterInfo.ParameterType.IsAssignableFrom(type) || _currentlyResolvingTypes.Contains(parameterInfo.ParameterType))
{
LogHandler?.Invoke("Injector: Circular dependency detected in Method {0}.{1}, parameter index: {2}", type, method.MethodInfo.Name, i);
paramObjects[i] = null;
}
else
{
InjectContext injectContext = new InjectContext(container, method.DeclaringType, parentContext);
Type parameterType = parameterInfo.ParameterType;
object paramInstance = container.ResolveWithCategory(parameterType, parameter.InjectAttribute?.Category, injectContext);
paramObjects[i] = paramInstance;
}
}
else
{
LogHandler?.Invoke("Injector: {0} - Type is not bound in the container, assigning as null {1}, method {2}, parameter index: {2}", type, parameterInfo.ParameterType, method.MethodInfo.Name, i);
paramObjects[i] = null;
}
}
method.MethodInfo.Invoke(obj, paramObjects.ToArray());
}
public void Inject(object objValue, IInjectContext parentContext)
{
Type tType = objValue.GetType();
// Ensure cached reflection...
PreInjectReflection(tType);
_currentlyResolvingTypes.Add(tType);
// Inject methods...
for (int i = 0; i < _cachedMethods[tType].Count(); i++)
{
MethodInfoCache method = _cachedMethods[tType].ElementAt(i);
InjectMethod(_container, parentContext, tType, objValue, method);
}
// Inject into Fields...
for (int i = 0; i < _cachedFields[tType].Count(); i++)
{
MemberInfoCache memberCache = _cachedFields[tType].ElementAt(i);
FieldInfo field = (FieldInfo)memberCache.MemberInfo;
bool isCircularReference = false;
if (field.FieldType.IsAssignableFrom(typeof(IContainer)))
{
field.SetValue(objValue, _container);
continue;
}
foreach (Type type in _currentlyResolvingTypes)
{
if (field.FieldType.IsAssignableFrom(type))
{
var binding = _container.GetBinding(field.FieldType, memberCache.InjectAttribute.Category);
if (binding != null && binding.BindingType == BindingType.Transient)
{
isCircularReference = true;
}
}
}
if (isCircularReference)
{
LogHandler?.Invoke("Injector: Circular dependency detected in Field {0}.{1}", tType, field.Name);
}
else
{
InjectContext injectContext = new InjectContext(_container, memberCache.DeclaringType, parentContext);
object fieldValue = _container.ResolveWithCategory(field.FieldType, memberCache.InjectAttribute.Category, injectContext);
field.SetValue(objValue, fieldValue);
}
}
// Inject into Properties...
for (int i = 0; i < _cachedProperties[tType].Count(); i++)
{
MemberInfoCache memberCache = _cachedProperties[tType].ElementAt(i);
PropertyInfo property = (PropertyInfo)memberCache.MemberInfo;
bool isCircularReference = false;
if (property.PropertyType.IsAssignableFrom(typeof(IContainer)))
{
property.SetValue(objValue, _container, null);
continue;
}
foreach (Type type in _currentlyResolvingTypes)
{
if (property.PropertyType.IsAssignableFrom(type))
{
var binding = _container.GetBinding(property.PropertyType, memberCache.InjectAttribute.Category);
if (binding != null && binding.BindingType == BindingType.Transient)
{
isCircularReference = true;
}
}
}
if (isCircularReference)
{
LogHandler?.Invoke("Injector: Circular dependency detected in Property {0}.{1}", tType, property.Name);
}
else
{
InjectContext injectContext = new InjectContext(_container, memberCache.DeclaringType, parentContext);
object propertyValue = _container.ResolveWithCategory(property.PropertyType, memberCache.InjectAttribute.Category, injectContext);
property.SetValue(objValue, propertyValue, null);
}
}
_currentlyResolvingTypes.Remove(tType);
}
protected object ExecuteStaticMethodConstructor(IContainer container, IInjectContext parentContext, MethodInfoCache method, Type type, params object[] addDependencies)
{
ParameterInfoCache[] parameters = method.Parameters;
if (parameters == null || parameters.Length == 0)
{
return(method.MethodInfo.Invoke(null, null));
}
object[] paramObjects = new object[parameters.Length];
for (int i = 0; i < parameters.Length; i++)
{
ParameterInfoCache parameter = parameters[i];
ParameterInfo parameterInfo = parameter.ParameterInfo;
// Can we resolve this?
if (container.HasBindingFor(parameterInfo.ParameterType))
{
bool isCircularDependency = false;
foreach (var resolvingType in _currentlyResolvingTypes)
{
if (parameterInfo.ParameterType.IsAssignableFrom(resolvingType))
{
isCircularDependency = true;
}
}
// Prevent recursive / circular dependency...
if (isCircularDependency)
{
LogHandler?.Invoke("Injector: Circular dependency detected in Method {0}.{1}, parameter index: {2}", type, method.MethodInfo.Name, i);
paramObjects[i] = null;
}
else
{
InjectContext injectContext = new InjectContext(container, method.DeclaringType, parentContext);
Type parameterType = parameterInfo.ParameterType;
object paramInstance = container.ResolveWithCategory(parameterType, parameter.InjectAttribute?.Category, injectContext);
paramObjects[i] = paramInstance;
}
}
else
{
bool hasAdditionalDependency = false;
// Check additional dependencies...
foreach (object dependency in addDependencies)
{
if (parameterInfo.ParameterType.IsInstanceOfType(dependency))
{
hasAdditionalDependency = true;
paramObjects[i] = dependency;
break;
}
}
if (!hasAdditionalDependency)
{
LogHandler?.Invoke("Injector: {0} - Type is not bound in the container, assigning as null {1}, method {2}, parameter index: {2}", type, parameterInfo.ParameterType, method.MethodInfo.Name, i);
paramObjects[i] = null;
}
}
}
// Invoke constructor...
object instance = method.MethodInfo.Invoke(null, paramObjects);
return(instance);
}
