Babel.Compiler.CodeGeneratingVisitor.VisitTypecase C# (CSharp) Méthode

        public override void VisitTypecase(TypecaseStatement typecase)
        {
            Label endLabel = ilGenerator.DefineLabel();
            foreach (TypecaseWhen when in typecase.WhenPartList) {
                Label nextLabel = ilGenerator.DefineLabel();
                typecase.Variable.Accept(this);
                ilGenerator.Emit(OpCodes.Isinst, when.TypeSpecifier.RawType);
                ilGenerator.Emit(OpCodes.Brfalse, nextLabel);
                when.LocalVariable.Declare(ilGenerator);
                when.LocalVariable.EmitStorePrefix(ilGenerator);
                typecase.Variable.Accept(this);
                TypeData varType = typecase.Variable.NodeType;
                TypeData whenType = when.TypeSpecifier.NodeType;
                if (!varType.IsSubtypeOf(whenType)) {
                    UnboxIfNecessary(varType.RawType, whenType.RawType);
                }
                when.LocalVariable.EmitStore(ilGenerator);
                when.ThenPart.Accept(this);
                ilGenerator.Emit(OpCodes.Br, endLabel);
                ilGenerator.MarkLabel(nextLabel);
            }
            if (typecase.ElsePart != null)
                typecase.ElsePart.Accept(this);
            ilGenerator.MarkLabel(endLabel);
        }