internal TargetFrameworkBackend CreateBackendForRuntime(TargetRuntime runtime)
{
if (FrameworkNode == null)
{
return(null);
}
lock (FrameworkNode)
{
if (FrameworkNode.ChildNodes == null)
{
return(null);
}
}
foreach (TypeExtensionNode node in FrameworkNode.ChildNodes)
{
TargetFrameworkBackend backend = (TargetFrameworkBackend)node.CreateInstance(typeof(TargetFrameworkBackend));
if (backend.SupportsRuntime(runtime))
{
return(backend);
}
}
return(null);
}
protected TargetFrameworkBackend GetBackend(TargetFramework fx)
{
if (frameworkBackends == null)
{
frameworkBackends = new TargetFrameworkBackend [TargetFramework.FrameworkCount];
}
else if (fx.Index >= frameworkBackends.Length)
{
Array.Resize(ref frameworkBackends, TargetFramework.FrameworkCount);
}
TargetFrameworkBackend backend = frameworkBackends [fx.Index];
if (backend == null)
{
backend = fx.CreateBackendForRuntime(this);
if (backend == null)
{
backend = CreateBackend(fx);
if (backend == null)
{
backend = new NotSupportedFrameworkBackend();
}
}
backend.Initialize(this, fx);
frameworkBackends [fx.Index] = backend;
}
return(backend);
}
