private static Expression CreateLazyExpressionCall(IContainerContext containerContext, IServiceRegistration serviceRegistration, Type type, ConstructorInfo constructor, ResolutionContext resolutionContext)
{
var arguments = resolutionContext.ParameterExpressions != null
? new Expression[resolutionContext.ParameterExpressions.Sum(x => x.Length)]
: new Expression[0];
if (resolutionContext.ParameterExpressions != null)
{
var index = 0;
for (var i = 0; i < resolutionContext.ParameterExpressions.Length; i++)
{
for (var j = 0; j < resolutionContext.ParameterExpressions[i].Length; j++)
{
arguments[index++] = resolutionContext.ParameterExpressions[i][j].ConvertTo(typeof(object));
}
}
}
var callExpression = DelegateCacheMethod.InvokeMethod(
containerContext.AsConstant(),
serviceRegistration.AsConstant(),
resolutionContext.AsConstant(),
type.AsConstant(),
typeof(object).InitNewArray(arguments));
return(constructor.MakeNew(callExpression.ConvertTo(type).AsLambda()));
}
private Expression[] CreatePostWorkExpressionIfAny(
IContainerContext containerContext,
IServiceRegistration serviceRegistration,
ResolutionContext resolutionContext,
Type serviceType,
Expression instance)
{
var length = serviceRegistration.InjectionMethods.Length;
if (this.containerExtensionManager.HasPostBuildExtensions)
{
length++;
}
if (serviceRegistration.RegistrationContext.Initializer != null)
{
length++;
}
var expressions = new Expression[length];
if (length > 0)
{
this.CreateMethodExpressions(containerContext, serviceRegistration.InjectionMethods,
serviceRegistration.RegistrationContext, resolutionContext, instance, expressions);
}
if (serviceRegistration.RegistrationContext.Initializer != null)
{
expressions[expressions.Length - (this.containerExtensionManager.HasPostBuildExtensions ? 2 : 1)] =
serviceRegistration.RegistrationContext.Initializer.AsConstant()
.CallMethod(serviceRegistration.RegistrationContext.Initializer.GetType().GetSingleMethod("Invoke"),
instance, resolutionContext.CurrentScopeParameter.ConvertTo(Constants.ResolverType));
}
if (this.containerExtensionManager.HasPostBuildExtensions)
{
var call = this.containerExtensionManager.AsConstant()
.CallMethod(Constants.BuildExtensionMethod,
instance,
containerContext.AsConstant(),
resolutionContext.AsConstant(),
serviceRegistration.AsConstant(),
serviceType.AsConstant());
expressions[expressions.Length - 1] = instance.AssignTo(call.ConvertTo(instance.Type));
}
return(expressions);
}
