private IEnumerable <ServiceBinding> Resolve <TElement>(IInstanceFactoryResolver resolver, Type type)
{
foreach (InstanceFactory instanceFactory in resolver.TryResolveAll(typeof(TElement)))
{
var newBinding = new ServiceBinding(type, BindingMetadata.GeneratedInstance, instanceFactory.Context.Expression, instanceFactory.Context.Expression.Type, ConstructorResolvers.Default, Lifetimes.Transient);
var expression = Expression.Lambda <Func <TElement> >(ExpressionCompiler.OptimizeExpression(instanceFactory.Context));
Func <Scoped, Expression <Func <TElement> > > del = scoped => expression; // we need to put this in a variable of this type or cast it else the static return type of the delegate will turn into a object..
var factory = new InstanceFactory(type, new ExpressionContext(expression), del);
newBinding.Factories.Add(factory);
yield return(newBinding);
}
}
/// <inheritdoc />
public IEnumerable <ServiceBinding> Resolve(IInstanceFactoryResolver resolver, Type type)
{
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Func <>))
{
Type dependencyType = type.GenericTypeArguments[0];
foreach (InstanceFactory factory in resolver.TryResolveAll(dependencyType))
{
LambdaExpression baseExpression = Expression.Lambda(factory.Context.Expression);
yield return(new ServiceBinding(type, BindingMetadata.GeneratedInstance, baseExpression, type, ConstructorResolvers.Default, Lifetimes.Transient)
{
BaseExpression = new ExpressionContext(baseExpression)
});
}
}
}
private IEnumerable <ServiceBinding> Resolve <TElement>(IInstanceFactoryResolver resolver, Type type)
{
Func <Scoped, TElement>[] instanceFactories = resolver.TryResolveAll(typeof(TElement)).Select(x => (Func <Scoped, TElement>)(Delegate) x.Factory).ToArray();
yield return(new ServiceBinding(new[]
{
typeof(Func <Scoped, TElement>[]),
}, BindingMetadata.GeneratedInstance, Expression.Constant(instanceFactories), typeof(Func <Scoped, TElement>[]), ConstructorResolvers.Default, Lifetimes.PerContainer));
Expression expression = ConstructorResolvers.Default.ResolveConstructorExpression(typeof(InstanceFactoryList <TElement>)) !;
yield return(new ServiceBinding(new[]
{
typeof(IEnumerable <TElement>),
typeof(IReadOnlyCollection <TElement>),
typeof(IReadOnlyList <TElement>),
}, BindingMetadata.GeneratedInstance, expression, expression.GetReturnType(), ConstructorResolvers.Default, Lifetimes.Transient));
//lists
Expression <Func <Scoped, List <TElement> > > listExpression = scope => CreateList(scope, instanceFactories);
yield return(new ServiceBinding(new[]
{
typeof(List <TElement>),
typeof(IList <TElement>),
typeof(ICollection <TElement>),
}, BindingMetadata.GeneratedInstance, listExpression, listExpression.GetReturnType(), ConstructorResolvers.Default, Lifetimes.Transient));
//sets
Expression <Func <Scoped, HashSet <TElement> > > setExpression = scope => CreateSet(scope, instanceFactories);
yield return(new ServiceBinding(new[]
{
typeof(HashSet <TElement>),
typeof(ISet <TElement>),
}, BindingMetadata.GeneratedInstance, setExpression, setExpression.GetReturnType(), ConstructorResolvers.Default, Lifetimes.Transient));
//arrays
Expression <Func <Scoped, TElement[]> > arrayExpression = scope => CreateArray(scope, instanceFactories);
yield return(new ServiceBinding(new[]
{
typeof(TElement[]),
}, BindingMetadata.GeneratedInstance, arrayExpression, arrayExpression.GetReturnType(), ConstructorResolvers.Default, Lifetimes.Transient));
}
/// <inheritdoc />
public IEnumerable <ServiceBinding> Resolve(IInstanceFactoryResolver resolver, Type type)
{
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Lazy <>))
{
Type funcType = typeof(Func <>).MakeGenericType(type.GenericTypeArguments[0]);
Type lazyType = typeof(Lazy <>).MakeGenericType(type.GenericTypeArguments[0]);
ConstructorInfo constructor = lazyType.GetConstructor(new[] { funcType });
foreach (InstanceFactory factory in resolver.TryResolveAll(funcType))
{
var context = (ExpressionContext)factory.Context;
context.Expression = Expression.New(constructor, factory.Context.Expression);
var newBinding = new ServiceBinding(type, BindingMetadata.GeneratedInstance, context.Expression, type, ConstructorResolvers.Default, Lifetimes.Transient);
newBinding.Factories.Add(new InstanceFactory(type, context));
yield return(newBinding);
}
}
}
