public override async Task ComputeRefactoringsAsync(CodeRefactoringContext context)
{
var(document, classDeclarationSyntax) = await context.GetClassIfOnClassIdentifier();
if (classDeclarationSyntax == null)
{
return;
}
if (!ClassDeclarationSyntaxAnalysis.CanBeDiscriminatedUnionBaseType(classDeclarationSyntax))
{
return;
}
if (classDeclarationSyntax.Parent == null ||
(!classDeclarationSyntax.Parent.IsKind(SyntaxKind.NamespaceDeclaration) &&
!classDeclarationSyntax.Parent.IsKind(SyntaxKind.CompilationUnit)))
{
return;
}
var duMembers = GetCandidateMethods(classDeclarationSyntax);
if (duMembers.Count == 0)
{
return;
}
context.RegisterRefactoring(
new DelegateCodeAction(
"Generate discriminated union from static methods",
(c) => GenerateDiscriminatedUnion(document, classDeclarationSyntax, c)));
}