APISampleUnitTestsCS.FAQ.GetInScopeSymbols C# (CSharp) Метод

        public void GetInScopeSymbols()
        {
            var source = @"
            class C
            {
            }
            class Program
            {
            private static int i = 0;
            public static void Main()
            {
            int j = 0; j += i;

            // What symbols are in scope here?
            }
            }";
            var tree = SyntaxTree.ParseText(source);
            var mscorlib = MetadataReference.CreateAssemblyReference("mscorlib");
            var compilation = Compilation.Create("MyCompilation",
                syntaxTrees: new[] { tree }, references: new[] { mscorlib });
            var model = compilation.GetSemanticModel(tree);

            // Get position of the comment above.
            var position = source.IndexOf("//");

            // Get 'all' symbols that are in scope at the above position.
            ReadOnlyArray<Symbol> symbols = model.LookupSymbols(position);
            var results = string.Join("\r\n", symbols.Select(symbol => symbol.ToDisplayString()).OrderBy(s => s));

            Assert.AreEqual(@"C
            j
            Microsoft
            object.Equals(object)
            object.Equals(object, object)
            object.GetHashCode()
            object.GetType()
            object.MemberwiseClone()
            object.ReferenceEquals(object, object)
            object.ToString()
            Program
            Program.i
            Program.Main()
            System", results);

            // Filter results using LookupOptions (get everything except instance members).
            symbols = model.LookupSymbols(position, options: LookupOptions.MustNotBeInstance);
            results = string.Join("\r\n", symbols.Select(symbol => symbol.ToDisplayString()).OrderBy(s => s));

            Assert.AreEqual(@"C
            j
            Microsoft
            object.Equals(object, object)
            object.ReferenceEquals(object, object)
            Program
            Program.i
            Program.Main()
            System", results);

            // Filter results by looking at Kind of returned symbols (only get locals and fields).
            results = string.Join("\r\n", symbols
                .Where(symbol => symbol.Kind == SymbolKind.Local || symbol.Kind == SymbolKind.Field)
                .Select(symbol => symbol.ToDisplayString()).OrderBy(s => s));

            Assert.AreEqual(@"j
            Program.i", results);
        }