public object Resolve(IBuilderContext context)
{
if (context.CurrentOperation is ConstructorArgumentResolveOperation operation)
{
var parameter = context.GetConstructorParameter(operation.ParameterName);
if (parameter.IsOptional && parameter.HasDefaultValue)
{
return(parameter.DefaultValue);
}
else
{
throw new InvalidOperationException($"Parameter {parameter.Name} of a constructor {operation.ConstructorSignature} does not have a default value.");
}
}
else if (context.CurrentOperation is MethodArgumentResolveOperation methodOperation)
{
var parameter = context.GetMethodParameter(methodOperation.ParameterName);
if (parameter.IsOptional && parameter.HasDefaultValue)
{
return(parameter.DefaultValue);
}
else
{
throw new InvalidOperationException($"Parameter {parameter.Name} of a method {methodOperation.MethodSignature} does not have a default value.");
}
}
else
{
throw new InvalidOperationException($"DefaultParameterValue is only supported for constructor and method injection.");
}
}