public void Absorb(IEnumerable <Type> types)
{
var specDescriptors =
(from t in types
let descriptor = CommandSpecDescriptor.TryGetFromType(t)
where descriptor.Exists
select descriptor.Require()
);
var descriptorDupes = from d in specDescriptors
group d by d.CommandName into nameGroup
where nameGroup.Count() > 1
select nameGroup.Key;
var descriptorDupeList = rolist(descriptorDupes);
if (descriptorDupeList.Count != 0)
{
throw new Exception($"Command names are required to be unique and {descriptorDupeList.Count} duplicates were found: " + string.Join("; ", descriptorDupeList));
}
var specDescriptorIndex = specDescriptors.ToDictionary(x => x.CommandName);
var executors = Patterns(types).ToList();
var execDupes = from x in executors
group x by x.SpecType into g
where g.Count() > 1
select g.Key;
var execDupeList = rolist(execDupes);
if (execDupeList.Count != 0)
{
throw new Exception($"Command names are required to be unique and {execDupeList.Count} duplicates were found: " + string.Join("; ", execDupeList));
}
var execDescriptorIndex = executors.ToDictionary(x => x.SpecType);
foreach (var spec in specDescriptorIndex)
{
var specType = spec.Value.SpecType;
DescribedSpecs[spec.Key] = spec.Value;
if (execDescriptorIndex.ContainsKey(specType))
{
var execDescriptor = execDescriptorIndex[specType];
DescribedPatterns[specType] = execDescriptor;
PatternCache[specType] = (ICommandExecutionService)Activator.CreateInstance(execDescriptor.PatternType, Context);
}
}
}
public static IReadOnlyList <CommandSpecDescriptor> DescribeCommands(this Assembly a)
=> rolist((from t in a.GetTypes()
let descriptor = CommandSpecDescriptor.TryGetFromType(t)
where descriptor.IsSome()
select descriptor.Require()));
