public Func <ServiceProviderEngineScope, object> Build(ServiceCallSite callSite)
{
// Optimize singleton case
if (callSite.Cache.Location == CallSiteResultCacheLocation.Root)
{
object value = _runtimeResolver.Resolve(callSite, _rootScope);
return(scope => value);
}
// Only scope methods are cached
if (callSite.Cache.Location == CallSiteResultCacheLocation.Scope)
{
#if NETSTANDARD2_1
return(_scopeResolverCache.GetOrAdd(callSite.Cache.Key, _buildTypeDelegate, callSite));
#else
return(_scopeResolverCache.GetOrAdd(callSite.Cache.Key, key => _buildTypeDelegate(key, callSite)));
#endif
}
return(BuildNoCache(callSite));
}
public Func <ServiceProviderEngineScope, object> Build(IServiceCallSite callSite)
{
if (callSite is SingletonCallSite singletonCallSite)
{
// If root call site is singleton we can return Func calling
// _runtimeResolver.Resolve directly and avoid Expression generation
if (TryResolveSingletonValue(singletonCallSite, out var value))
{
return(scope => value);
}
return(scope => _runtimeResolver.Resolve(callSite, scope));
}
return(BuildType(callSite));
}
public Func <ServiceProviderEngineScope, object> Build(ServiceCallSite callSite)
{
if (callSite.Cache.Location == CallSiteResultCacheLocation.Root)
{
// If root call site is singleton we can return Func calling
// _runtimeResolver.Resolve directly and avoid Expression generation
if (TryResolveSingletonValue(callSite, out var value))
{
return(scope => value);
}
return(scope => _runtimeResolver.Resolve(callSite, scope));
}
return(BuildExpression(callSite).Compile());
}
public Func <ServiceProviderEngineScope, object> Build(ServiceCallSite callSite)
{
if (callSite.Cache.Location == CallSiteResultCacheLocation.Root)
{
// If root call site is singleton we can return Func calling
// _runtimeResolver.Resolve directly and avoid Expression generation
if (TryResolveSingletonValue(callSite, out var value))
{
return(scope => value);
}
return(scope => _runtimeResolver.Resolve(callSite, scope));
}
var expression = BuildExpression(callSite);
DependencyInjectionEventSource.Log.ExpressionTreeGenerated(callSite.ServiceType, expression);
return(expression.Compile());
}
