Added ParseOptions for attribute generation

Author: aliev.faramoz

DevExpress.Mvvm.CodeGenerators.Tests/TestSource/GenerationTests.cs

@@ -406,5 +406,22 @@ public DelegateCommand<int> Command3Command {
 
         }
 #endif
+
+        [Test, Category("TODO")]
+        public void CommonLanguageVersionTest() {
+            string source = string.Empty;
+            CSharpParseOptions options = new CSharpParseOptions((LanguageVersion)1000); // TODO Change to LanguageVersion.CSharp10
+            Compilation inputCompilation = CSharpCompilation.Create("MyCompilation",
+                                                                    new[] { CSharpSyntaxTree.ParseText(source, options) },
+                                                                    new[] { MetadataReference.CreateFromFile(typeof(object).Assembly.Location)},
+                                                                    new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary));
+            ViewModelGenerator generator = new ViewModelGenerator();
+            GeneratorDriver driver = CSharpGeneratorDriver.Create(new[] { generator }, parseOptions: options);
+            driver = driver.RunGeneratorsAndUpdateCompilation(inputCompilation, out var outputCompilation, out var diagnostics);
+            GeneratorDriverRunResult runResult = driver.GetRunResult();
+            GeneratorRunResult generatorResult = runResult.Results[0];
+
+            Assert.AreEqual(1, generatorResult.GeneratedSources.Length);
+        }
     }
 }

DevExpress.Mvvm.CodeGenerators/Generators/GeneratorCore.cs

@@ -20,7 +20,8 @@ public static void Execute(GeneratorExecutionContext context) {
                 return;
 
             SourceText attributesSourceText = SourceText.From(InitializationGenerator.GetSourceCode(ContextInfo.GetIsWinUI(context.Compilation)), Encoding.UTF8);
-            Compilation compilation = context.Compilation.AddSyntaxTrees(CSharpSyntaxTree.ParseText(attributesSourceText));
+            SyntaxTree attributesSyntaxTree = CSharpSyntaxTree.ParseText(attributesSourceText, (CSharpParseOptions)context.ParseOptions);
+            Compilation compilation = context.Compilation.AddSyntaxTrees(attributesSyntaxTree);
             context.AddSource(ClassHelper.CreateFileName("Attributes"), attributesSourceText);
 
             ContextInfo contextInfo = new ContextInfo(context, compilation);