Ancestry.QueryProcessor.Type.BaseType.EmitShortCircuit C# (CSharp) Method

        protected virtual void EmitShortCircuit(MethodContext method, Compiler compiler, Frame frame, ExpressionContext left, ExpressionContext right, Parse.BinaryExpression expression, Type.BaseType typeHint)
        {
            var leftType = left.Type.GetNative(compiler.Emitter);
            var rightType = right.Type.GetNative(compiler.Emitter);
            left.EmitGet(method);
            right.EmitGet(method);
            switch (expression.Operator)
            {
                case Parse.Operator.And:
                    if (!CallClassOp(method, "op_LogicalAnd", leftType, leftType))
                    {
                        var label = method.IL.DefineLabel();
                        method.IL.Emit(OpCodes.Dup);
                        method.IL.Emit(OpCodes.Brfalse_S, label);
                        right.EmitGet(method);
                        method.IL.Emit(OpCodes.And);
                        method.IL.MarkLabel(label);
                    }
                    break;

                case Parse.Operator.Or:
                    if (!CallClassOp(method, "op_LogicalOr", leftType, leftType))
                    {
                        var label = method.IL.DefineLabel();
                        method.IL.Emit(OpCodes.Dup);
                        method.IL.Emit(OpCodes.Brtrue_S, label);
                        right.EmitGet(method);
                        method.IL.Emit(OpCodes.Or);
                        method.IL.MarkLabel(label);
                    }
                    break;

                default: throw new NotSupportedException(String.Format("Operator {0} is not supported.", expression.Operator));
            }
        }