APISampleUnitTestsCS.FAQ.FindAllInvocationsToMethodsFromAParticularNamespace C# (CSharp) Method

        public void FindAllInvocationsToMethodsFromAParticularNamespace()
        {
            var tree = SyntaxTree.ParseText(@"
            using System;
            using System.Threading.Tasks;
            class Program
            {
            static void Main()
            {
            Action a = () => {};
            var t = Task.Factory.StartNew(a);
            t.Wait();
            Console.WriteLine(a.ToString());

            a = () =>
            {
            t = new Task(a);
            t.Start();
            t.Wait();
            };
            a();
            }
            }");
            var compilation = Compilation.Create("MyCompilation")
                .AddReferences(MetadataReference.CreateAssemblyReference("mscorlib"))
                .AddSyntaxTrees(tree);
            var model = compilation.GetSemanticModel(tree);

            // Instantiate MethodInvocationWalker (below) and tell it to find invocations to methods from the System.Threading.Tasks namespace.
            var walker = new MethodInvocationWalker()
            {
                SemanticModel = model,
                Namespace = "System.Threading.Tasks"
            };

            walker.Visit(tree.GetRoot());
            Assert.AreEqual(@"
            Line 8: Task.Factory.StartNew(a)
            Line 9: t.Wait()
            Line 14: new Task(a)
            Line 15: t.Start()
            Line 16: t.Wait()", walker.Results.ToString());
        }