/// <summary>
/// Emits the instructions that will instantiate the current implementation.
/// </summary>
/// <param name="dependency">The dependency that describes the service to be instantiated.</param>
/// <param name="serviceMap">The service map that contains the list of dependencies in the application.</param>
/// <param name="targetMethod">The target method.</param>
public void Emit(IDependency dependency, IDictionary <IDependency, IImplementation> serviceMap, MethodDefinition targetMethod)
{
var declaringType = targetMethod.DeclaringType;
var module = declaringType.Module;
var listType = typeof(List <>).MakeGenericType(_serviceType);
var listCtor = module.ImportConstructor(listType, new System.Type[0]);
var listVariable = targetMethod.AddLocal(listType);
var IL = targetMethod.GetILGenerator();
IL.Emit(OpCodes.Newobj, listCtor);
IL.Emit(OpCodes.Stloc, listVariable);
var targetDependencies = (from d in serviceMap.Keys
where d.ServiceType == _serviceType
select d).ToArray();
var addItem = module.ImportMethod("Add", listType);
var serviceType = module.Import(_serviceType);
var currentService = targetMethod.AddLocal(_serviceType);
foreach (var currentDependency in targetDependencies)
{
IL.Emit(OpCodes.Ldloc, listVariable);
// Instantiate the current service type
var implementation = new ContainerCall(currentDependency.ServiceType, currentDependency.ServiceName);
implementation.Emit(currentDependency, serviceMap, targetMethod);
IL.Emit(OpCodes.Isinst, serviceType);
IL.Emit(OpCodes.Stloc, currentService);
// Call IInitialize.Initialize(container) on the current service type
_initializer.Initialize(IL, module, currentService);
IL.Emit(OpCodes.Ldloc, currentService);
IL.Emit(OpCodes.Callvirt, addItem);
}
var enumerableType = typeof(IEnumerable <>).MakeGenericType(_serviceType);
var importedEnumerableType = module.Import(enumerableType);
IL.Emit(OpCodes.Ldloc, listVariable);
IL.Emit(OpCodes.Isinst, importedEnumerableType);
}
/// <summary>
/// Emits the instructions that will instantiate the current implementation.
/// </summary>
/// <param name="dependency">The dependency that describes the service to be instantiated.</param>
/// <param name="serviceMap">The service map that contains the list of dependencies in the application.</param>
/// <param name="targetMethod">The target method.</param>
public void Emit(IDependency dependency, IDictionary<IDependency, IImplementation> serviceMap, MethodDefinition targetMethod)
{
var declaringType = targetMethod.DeclaringType;
var module = declaringType.Module;
var listType = typeof(List<>).MakeGenericType(_serviceType);
var listCtor = module.ImportConstructor(listType, new Type[0]);
var listVariable = targetMethod.AddLocal(listType);
var IL = targetMethod.GetILGenerator();
IL.Emit(OpCodes.Newobj, listCtor);
IL.Emit(OpCodes.Stloc, listVariable);
var targetDependencies = (from d in serviceMap.Keys
where d.ServiceType == _serviceType
select d).ToArray();
var addItem = module.ImportMethod("Add", listType);
var serviceType = module.Import(_serviceType);
var currentService = targetMethod.AddLocal(_serviceType);
foreach(var currentDependency in targetDependencies)
{
IL.Emit(OpCodes.Ldloc, listVariable);
// Instantiate the current service type
var implementation = new ContainerCall(currentDependency.ServiceType, currentDependency.ServiceName);
implementation.Emit(currentDependency, serviceMap, targetMethod);
IL.Emit(OpCodes.Isinst, serviceType);
IL.Emit(OpCodes.Stloc, currentService);
// Call IInitialize.Initialize(container) on the current service type
_initializer.Initialize(IL, module, currentService);
IL.Emit(OpCodes.Ldloc, currentService);
IL.Emit(OpCodes.Callvirt, addItem);
}
var enumerableType = typeof(IEnumerable<>).MakeGenericType(_serviceType);
var importedEnumerableType = module.Import(enumerableType);
IL.Emit(OpCodes.Ldloc, listVariable);
IL.Emit(OpCodes.Isinst, importedEnumerableType);
}
/// <summary>
/// Emits the <see cref="IFactory{T}.Create"/> method call that will instantiate the current service instance.
/// </summary>
/// <param name="dependency">The dependency that describes the service to be instantiated.</param>
/// <param name="serviceMap">The service map that contains the list of dependencies in the application.</param>
/// <param name="targetMethod">The target method.</param>
public void Emit(IDependency dependency, IDictionary<IDependency, IImplementation> serviceMap, MethodDefinition targetMethod)
{
var factoryType = typeof (IFactory<>).MakeGenericType(_serviceType);
var getFactoryInstanceCall = new ContainerCall(factoryType, _serviceName);
var factoryName = _serviceName;
getFactoryInstanceCall.Emit(new Dependency(factoryType, factoryName), serviceMap, targetMethod);
var declaringType = targetMethod.DeclaringType;
var module = declaringType.Module;
var factoryTypeReference = module.Import(factoryType);
var createMethod = module.Import(factoryType.GetMethod("Create"));
var IL = targetMethod.GetILGenerator();
IL.Emit(OpCodes.Isinst, factoryTypeReference);
IL.Emit(OpCodes.Callvirt, createMethod);
}
/// <summary>
/// Emits the <see cref="IFactory{T}.Create"/> method call that will instantiate the current service instance.
/// </summary>
/// <param name="dependency">The dependency that describes the service to be instantiated.</param>
/// <param name="serviceMap">The service map that contains the list of dependencies in the application.</param>
/// <param name="targetMethod">The target method.</param>
public void Emit(IDependency dependency, IDictionary <IDependency, IImplementation> serviceMap, MethodDefinition targetMethod)
{
var factoryType = typeof(IFactory <>).MakeGenericType(_serviceType);
var getFactoryInstanceCall = new ContainerCall(factoryType, _serviceName);
var factoryName = _serviceName;
getFactoryInstanceCall.Emit(new Dependency(factoryType, factoryName), serviceMap, targetMethod);
var declaringType = targetMethod.DeclaringType;
var module = declaringType.Module;
var factoryTypeReference = module.Import(factoryType);
var createMethod = module.Import(factoryType.GetMethod("Create"));
var IL = targetMethod.GetILGenerator();
IL.Emit(OpCodes.Isinst, factoryTypeReference);
IL.Emit(OpCodes.Callvirt, createMethod);
}
