public void Execute(TagHelperDescriptorProviderContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
var compilation = context.GetCompilation();
if (compilation == null)
{
// No compilation, nothing to do.
return;
}
var iTagHelper = compilation.GetTypeByMetadataName(TagHelperTypes.ITagHelper);
if (iTagHelper == null || iTagHelper.TypeKind == TypeKind.Error)
{
// Could not find attributes we care about in the compilation. Nothing to do.
return;
}
var types = new List <INamedTypeSymbol>();
var visitor = new TagHelperTypeVisitor(iTagHelper, types);
var targetAssembly = context.Items.GetTargetAssembly();
if (targetAssembly is not null)
{
visitor.Visit(targetAssembly.GlobalNamespace);
}
else
{
visitor.Visit(compilation.Assembly.GlobalNamespace);
foreach (var reference in compilation.References)
{
if (compilation.GetAssemblyOrModuleSymbol(reference) is IAssemblySymbol assembly)
{
if (IsTagHelperAssembly(assembly))
{
visitor.Visit(assembly.GlobalNamespace);
}
}
}
}
var factory = new DefaultTagHelperDescriptorFactory(compilation, context.IncludeDocumentation, context.ExcludeHidden);
for (var i = 0; i < types.Count; i++)
{
var descriptor = factory.CreateDescriptor(types[i]);
if (descriptor != null)
{
context.Results.Add(descriptor);
}
}
}
public void IsTagHelper_InternalTagHelper_ReturnsFalse()
{
// Arrange
var testVisitor = new TagHelperTypeVisitor(ITagHelperSymbol, new List <INamedTypeSymbol>());
var tagHelperSymbol = Compilation.GetTypeByMetadataName(typeof(Invalid_InternalTagHelper).FullName);
// Act
var isTagHelper = testVisitor.IsTagHelper(tagHelperSymbol);
// Assert
Assert.False(isTagHelper);
}
