Added support for the virtual Apex class modifier (converted to the Virtual attribute).

Author: yallie

.editorconfig

@@ -0,0 +1,7 @@
+# EditorConfig: http://EditorConfig.org
+# VS extension: https://visualstudiogallery.msdn.microsoft.com/c8bccfe2-650c-4b42-bc5c-845e21f96328
+
+# tab indentation
+[*.cs]
+indent_style = space
+indent_size = 4

ApexParser/Visitors/ApexSyntaxBuilder.cs

@@ -262,6 +262,10 @@ private object ConvertClassAnnotation(ApexAnnotationSyntax node)
             {
                 return ApexKeywords.Global;
             }
+            else if (node.Identifier == "Virtual")
+            {
+                return ApexKeywords.Virtual;
+            }
             else if (node.Identifier == "WithSharing")
             {
                 return $"{ApexKeywords.With} {ApexKeywords.Sharing}";

ApexParser/Visitors/CSharpCodeGenerator.cs

@@ -215,6 +215,10 @@ protected override IAnnotatedSyntax ConvertModifiersAndAnnotations(IAnnotatedSyn
                     result.Annotations.Add(new AnnotationSyntax("Global"));
                     isGlobal = true;
                 }
+                else if (modifier == ApexKeywords.Virtual && ownerNode is ClassDeclarationSyntax)
+                {
+                    result.Annotations.Add(new AnnotationSyntax("Virtual"));
+                }
                 else if (modifier.StartsWith(ApexKeywords.Without))
                 {
                     result.Annotations.Add(new AnnotationSyntax("WithoutSharing"));

ApexParserTest/Visitors/ApexSyntaxBuilderTests.cs

@@ -295,6 +295,7 @@ public void ApexClassAttributesAreConvertedToModifiers()
             Check("[Global] public class X {}", "global class X {}");
             Check("[WithSharing] public class X {}", "public with sharing class X {}");
             Check("[WithoutSharing] public class X {}", "public without sharing class X {}");
+            Check("[Virtual] public class X {}", "public virtual class X {}");
         }
 
         [Test]

ApexParserTest/Visitors/CSharpGeneratorTests.cs

@@ -922,6 +922,7 @@ public void UnsupportedModifiersGetConvertedIntoAttributes()
             public global class TestClass {
                 private with sharing class Inner1 { }
                 public without sharing class Inner2 { }
+                public virtual class Inner3 { }
                 private testMethod void MyTest(final int x) { }
                 public webservice void MyService() { }
                 transient int TransientField = 0;
@@ -949,6 +950,11 @@ public class Inner2
                         {
                         }
 
+                        [Virtual]
+                        public class Inner3
+                        {
+                        }
+
                         [Test]
                         private void MyTest([Final] int x)
                         {