protected string EmitCreateControl(Type type, object[] arguments)
{
// if marked with [RequireDependencyInjection] attribute, invoke injected factory
if (type.GetTypeInfo().GetCustomAttribute(typeof(DependencyInjection.RequireDependencyInjectionAttribute)) is DependencyInjection.RequireDependencyInjectionAttribute requireDiAttr)
{
return(emitter.EmitCustomInjectionFactoryInvocation(requireDiAttr.FactoryType, type));
}
// if matching ctor exists, invoke it directly
else if (type.GetConstructors().FirstOrDefault(ctor =>
ctor.GetParameters().Count(p => !p.HasDefaultValue) <= (arguments?.Length ?? 0) &&
ctor.GetParameters().Length >= (arguments?.Length ?? 0) &&
ctor.GetParameters().Zip(arguments ?? Enumerable.Empty <object>(),
(p, a) => TypeConversion.ImplicitConversion(Expression.Constant(a), p.ParameterType))
.All(a => a != null)) is ConstructorInfo constructor)
{
var optionalArguments =
constructor.GetParameters().Skip(arguments?.Length ?? 0)
.Select(a =>
a.ParameterType == typeof(bool) && a.Name == "allowImplicitLifecycleRequirements" ? false :
a.DefaultValue
);
return(emitter.EmitCreateObject(type, arguments == null ? optionalArguments.ToArray() : arguments.Concat(optionalArguments).ToArray()));
}
// otherwise invoke DI factory
else
{
return(emitter.EmitInjectionFactoryInvocation(
type,
(arguments ?? Enumerable.Empty <object>()).Select(a => (a.GetType(), emitter.EmitValue(a))).ToArray(),
emitter.InvokeDefaultInjectionFactory
));
}
}
protected string EmitCreateControl(Type type, object[] arguments)
{
// if matching ctor exists, invoke it directly
if (type.GetTypeInfo().GetCustomAttribute(typeof(DependencyInjection.RequireDependencyInjectionAttribute)) is DependencyInjection.RequireDependencyInjectionAttribute requireDiAttr)
{
return(emitter.EmitCustomInjectionFactoryInvocation(requireDiAttr.FactoryType, type));
}
else if (type.GetConstructors().Any(ctor =>
ctor.GetParameters().Length == (arguments?.Length ?? 0) &&
ctor.GetParameters().Zip(arguments ?? Enumerable.Empty <object>(),
(p, a) => TypeConversion.ImplicitConversion(Expression.Constant(a), p.ParameterType))
.All(a => a != null)))
{
return(emitter.EmitCreateObject(type, arguments));
}
// othervise invoke DI factory
else
{
return(emitter.EmitInjectionFactoryInvocation(
type,
(arguments ?? Enumerable.Empty <object>()).Select(a => (a.GetType(), emitter.EmitValue(a))).ToArray(),
emitter.InvokeDefaultInjectionFactory
));
}
}
