private static void SetDefaultValue(ParameterInfo parameter, ConstructorParameterInfo parameterInfo,
IActivationExpressionRequest newRequest)
{
try
{
if (parameterInfo?.DefaultValue != null)
{
newRequest.SetDefaultValue(new DefaultValueInformation {
DefaultValue = parameterInfo.DefaultValue
});
}
else if (parameter.HasDefaultValue)
{
var defaultValue = parameter.DefaultValue;
if (defaultValue == null &&
parameter.ParameterType.GetTypeInfo().IsValueType)
{
defaultValue = Activator.CreateInstance(parameter.ParameterType);
}
newRequest.SetDefaultValue(new DefaultValueInformation {
DefaultValue = defaultValue
});
}
}
catch (FormatException) when(parameter.ParameterType == typeof(DateTime))
{
newRequest.SetDefaultValue(new DefaultValueInformation {
DefaultValue = default(DateTime)
});
}
}
/// <summary>
/// Get expression for parameter
/// </summary>
/// <param name="parameter"></param>
/// <param name="parameterInfo"></param>
/// <param name="injectionScope"></param>
/// <param name="configuration"></param>
/// <param name="request"></param>
/// <returns></returns>
protected virtual IActivationExpressionResult GetParameterExpression(ParameterInfo parameter, ConstructorParameterInfo parameterInfo, IInjectionScope injectionScope, TypeActivationConfiguration configuration, IActivationExpressionRequest request, out IActivationExpressionRequest newRequest)
{
if (parameterInfo?.ExportFunc != null)
{
newRequest = null;
return(CallExportFunc(configuration.ActivationStrategy, parameter, parameterInfo, injectionScope, request, configuration.ExternallyOwned));
}
newRequest = request.NewRequest(parameterInfo?.UseType ?? parameter.ParameterType,
configuration.ActivationStrategy,
configuration.ActivationType,
RequestType.ConstructorParameter,
parameter,
true,
true);
if (parameterInfo?.LocateWithKey != null)
{
newRequest.SetLocateKey(parameterInfo.LocateWithKey);
}
else if (injectionScope.ScopeConfiguration.Behaviors.KeyedTypeSelector(parameter.ParameterType))
{
newRequest.SetLocateKey(parameter.Name);
}
if (parameterInfo?.DefaultValue != null)
{
newRequest.SetDefaultValue(new DefaultValueInformation {
DefaultValue = parameterInfo.DefaultValue
});
}
else if (parameter.HasDefaultValue)
{
newRequest.SetDefaultValue(new DefaultValueInformation {
DefaultValue = parameter.DefaultValue
});
}
if (parameterInfo != null)
{
newRequest.IsDynamic = parameterInfo.IsDynamic;
newRequest.SetIsRequired(parameterInfo.IsRequired.GetValueOrDefault(!parameter.IsOptional));
newRequest.SetFilter(parameterInfo.ExportStrategyFilter);
newRequest.SetEnumerableComparer(parameterInfo.EnumerableComparer);
}
else
{
newRequest.SetIsRequired(!parameter.IsOptional);
}
return(newRequest.Services.ExpressionBuilder.GetActivationExpression(injectionScope, newRequest));
}
