private ControllerModel CreateSemanticModel(INamedTypeSymbol symbol, Compilation compilation)
{
// Проверяем, что это класс-наследник ControllerBase
var controllerBase = WellKnownTypes.ControllerBase(compilation);
if (controllerBase == null || !symbol.InheritsFrom(controllerBase))
{
return(null);
}
var model = new ControllerModel().WithSymbol(symbol);
// Получаем RouteAttribute для контроллера
var controllerRoute = symbol.GetAttributes()
.FirstOrDefault(a => a.AttributeClass.Equals(WellKnownTypes.RouteAttribute(compilation)));
if (controllerRoute != null)
{
var prefix = controllerRoute.ConstructorArguments
.FirstOrDefault(a => a.Type.SpecialType == SpecialType.System_String);
model = model.WithRoutePrefix(prefix.Value as string);
}
var actions = ImmutableArray <ControllerAction> .Empty.ToBuilder();
// Собираем информацию о controller actions
foreach (var method in symbol.GetMembers().OfType <IMethodSymbol>()
.Where(m => m.DeclaredAccessibility.HasFlag(Accessibility.Public)))
{
HttpMethod httpMethod = null;
string route = null;
// Собираем атрибуты action'а:
foreach (var attr in method.GetAttributes())
{
// 1. Http Method
if (attr.AttributeClass.Equals(WellKnownTypes.HttpGetAttribute(compilation)))
{
httpMethod = HttpMethod.Get;
}
else if (attr.AttributeClass.Equals(WellKnownTypes.HttpPostAttribute(compilation)))
{
httpMethod = HttpMethod.Post;
}
// 2. Route
else if (attr.AttributeClass.Equals(WellKnownTypes.RouteAttribute(compilation)))
{
route = attr.ConstructorArguments
.FirstOrDefault(a => a.Type.SpecialType == SpecialType.System_String).Value as string;
}
}
if (httpMethod != null)
{
actions.Add(new ControllerAction(httpMethod, route, method));
}
}
return(model.WithActions(actions.ToImmutable()));
}
