Relax class fields declr rhs

src/WattleScript.Interpreter/Tree/GeneratedClosure.cs

@@ -61,7 +61,7 @@ public void ResolveScope(ScriptLoadingContext lcontext, Action<ScriptLoadingCont
                     referenced[s] = new SymbolRefExpression(lcontext, lcontext.Scope.DefineLocal(s));
             }
             extra?.Invoke(lcontext);
-            foreach(var e in toResolve) e.ResolveScope(lcontext);
+            foreach(var e in toResolve) e?.ResolveScope(lcontext);
             frame = lcontext.Scope.PopFunction();
         }
 

src/WattleScript.Interpreter/Tree/Statements/ClassDefinitionStatement.cs

@@ -152,6 +152,7 @@ public ClassDefinitionStatement(ScriptLoadingContext lcontext) : base(lcontext)
                     {
                         var T = lcontext.Lexer.Current;
                         lcontext.Lexer.Next();
+                        bool resetModifiers = true;
                         switch (lcontext.Lexer.Current.Type)
                         {
                             case TokenType.Brk_Open_Round:
@@ -180,14 +181,22 @@ public ClassDefinitionStatement(ScriptLoadingContext lcontext) : base(lcontext)
                                 var exp = Expression.Expr(lcontext, true);
                                 fields.Add(T, exp, modifierFlags, false);
                                 break;
-                            case TokenType.Comma: //no-op
+                            case TokenType.Comma:
+                                fields.Add(T, null, modifierFlags, false);
+                                resetModifiers = false;
+                                break;
                             case TokenType.SemiColon:
                                 break;
                             default:
-                                CheckTokenType(lcontext, TokenType.SemiColon); //throws error
+                                fields.Add(T, null, modifierFlags, false);
                                 break;
                         }
-                        modifierFlags = MemberModifierFlags.None;
+
+                        if (resetModifiers)
+                        {
+                            modifierFlags = MemberModifierFlags.None;   
+                        }
+
                         break;
                     }
                     default:
@@ -354,6 +363,11 @@ void CompileInit(FunctionBuilder parent)
                 bc.Emit_CopyPriv();
                 foreach (var field in fields.Where(x => !x.Flags.HasFlag(MemberModifierFlags.Static)))
                 {
+                    if (field.Expr == null)
+                    {
+                        continue;
+                    }
+
                     field.Expr.CompilePossibleLiteral(bc);
                     sym["table"].Compile(bc);
                     bc.Emit_IndexSet(0, 0, field.Name, false, false, true);

src/WattleScript.Tests/EndToEnd/CLike/SyntaxCLike/Classes/30-relaxed-field-rhs.lua

@@ -0,0 +1,18 @@
+class C {
+    private a, b, c
+    p2
+
+    C() {
+        this.a = 2
+        this.p2 = 20
+    }
+
+    f2() {
+        print(this.a)
+    }
+}
+
+c = new C()
+print(c.a)
+c.f2()
+print(c.p2)

src/WattleScript.Tests/EndToEnd/CLike/SyntaxCLike/Classes/30-relaxed-field-rhs.txt

@@ -0,0 +1,3 @@
+nil
+2
+20