private void ProcessConceptLeaf()
        {
            _lastIsOperator = null;

            var value = NameHelper.CreateName(_currToken.Content);

            var kindOfName = value.KindOfName;

            switch (kindOfName)
            {
            case KindOfName.Concept:
            case KindOfName.Channel:
            case KindOfName.Entity:
            {
                var node = new ConstValueAstExpression();
                node.Value = value;

                var intermediateNode = new IntermediateAstNode(node);

                AstNodesLinker.SetNode(intermediateNode, _nodePoint);

                _state = State.GotName;
            }
            break;

            default:
                throw new ArgumentOutOfRangeException(nameof(kindOfName), kindOfName, null);
            }
        }
Пример #2
0
        private void ProcessUnaryOperator(KindOfOperatorOfLogicalQueryNode kindOfOperator)
        {
            var node = new LogicalQueryNode();

            _lastLogicalQueryNode = node;
            node.Kind             = KindOfLogicalQueryNode.UnaryOperator;

            node.KindOfOperator = kindOfOperator;

            var kind = KindOfOperator.Unknown;

            switch (kindOfOperator)
            {
            case KindOfOperatorOfLogicalQueryNode.Not:
                kind = KindOfOperator.Not;
                break;

            default:
                throw new ArgumentOutOfRangeException(nameof(kindOfOperator), kindOfOperator, null);
            }

            var priority = OperatorsHelper.GetPriority(kind);

#if DEBUG
            //Log($"priority = {priority}");
#endif

            var intermediateNode = new IntermediateAstNode(node, KindOfIntermediateAstNode.UnaryOperator, priority);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _state = State.GotOperator;
        }
        private void ProcessCallingFunction()
        {
            _lastIsOperator = null;

            _context.Recovery(_currToken);

            var parser = new CallingFunctionExpressionParser(_context);

            parser.Run();

            var node = parser.Result;

#if DEBUG
            //Log($"node = {node}");
#endif

            var priority = OperatorsHelper.GetPriority(KindOfOperator.CallFunction);

#if DEBUG
            //Log($"priority = {priority}");
#endif

            var intermediateNode = new IntermediateAstNode(node, KindOfIntermediateAstNode.UnaryOperator, priority);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _state = State.Init;
        }
        public void AstNodesLinker_Tests_Case8()
        {
            var nodePoint = new IntermediateAstNodePoint();

            var varNode = new TstVarAstExpression();

            varNode.Name = "a";

            var intermediateNode = new IntermediateAstNode(varNode);

            AstNodesLinker.SetNode(intermediateNode, nodePoint);

            var binOpNode = new TstBinaryAstExpression();

            binOpNode.KindOfOperator = TstKindOfOperator.Assign;

            var priority = GetPriority(binOpNode.Kind, binOpNode.KindOfOperator);

            intermediateNode = new IntermediateAstNode(binOpNode, KindOfIntermediateAstNode.BinaryOperator, priority);

            AstNodesLinker.SetNode(intermediateNode, nodePoint);

            var numNode = new TstNumberAstExpressionNode();

            numNode.Value = 12;

            intermediateNode = new IntermediateAstNode(numNode);

            AstNodesLinker.SetNode(intermediateNode, nodePoint);

            binOpNode = new TstBinaryAstExpression();
            binOpNode.KindOfOperator = TstKindOfOperator.Plus;

            priority = GetPriority(binOpNode.Kind, binOpNode.KindOfOperator);

            intermediateNode = new IntermediateAstNode(binOpNode, KindOfIntermediateAstNode.BinaryOperator, priority);

            AstNodesLinker.SetNode(intermediateNode, nodePoint);

            numNode       = new TstNumberAstExpressionNode();
            numNode.Value = 5;

            intermediateNode = new IntermediateAstNode(numNode);

            AstNodesLinker.SetNode(intermediateNode, nodePoint);

            var resultExr = (TstBaseAstExpression)nodePoint.BuildExpr();

            var str = resultExr.GetDbgString();

            Assert.AreEqual(str, "a = 12 + 5");

            var calcResult = resultExr.Calc();

            Assert.AreEqual(calcResult, 17);

            Assert.AreEqual(varNode.Value, 17);
        }
        private void ProcessStringToken()
        {
            _lastIsOperator = null;

            var node  = new ConstValueAstExpression();
            var value = new StringValue(_currToken.Content);

            node.Value = value;

            var intermediateNode = new IntermediateAstNode(node);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);
        }
        public void AstNodesLinker_Tests_Case5()
        {
            var nodePoint = new IntermediateAstNodePoint();

            var numNode = new TstNumberAstExpressionNode();

            numNode.Value = 12;

            var intermediateNode = new IntermediateAstNode(numNode);

            AstNodesLinker.SetNode(intermediateNode, nodePoint);

            var binOpNode = new TstBinaryAstExpression();

            binOpNode.KindOfOperator = TstKindOfOperator.Plus;

            var priority = GetPriority(binOpNode.Kind, binOpNode.KindOfOperator);

            intermediateNode = new IntermediateAstNode(binOpNode, KindOfIntermediateAstNode.BinaryOperator, priority);

            AstNodesLinker.SetNode(intermediateNode, nodePoint);

            var unaryOp = new TstUnaryAstExpression();

            unaryOp.KindOfOperator = TstKindOfOperator.Minus;

            priority = GetPriority(unaryOp.Kind, unaryOp.KindOfOperator);

            intermediateNode = new IntermediateAstNode(unaryOp, KindOfIntermediateAstNode.UnaryOperator, priority);

            AstNodesLinker.SetNode(intermediateNode, nodePoint);

            numNode       = new TstNumberAstExpressionNode();
            numNode.Value = 5;

            intermediateNode = new IntermediateAstNode(numNode);

            AstNodesLinker.SetNode(intermediateNode, nodePoint);

            var resultExr = (TstBaseAstExpression)nodePoint.BuildExpr();

            var str = resultExr.GetDbgString();

            Assert.AreEqual(str, "12 + - 5");

            var calcResult = resultExr.Calc();

            Assert.AreEqual(calcResult, 7);
        }
        private void ProcessNumberToken()
        {
            _context.Recovery(_currToken);
            var parser = new NumberParser(_context);

            parser.Run();

            var node = new ConstValueAstExpression();

            node.Value = parser.Result;

            var intermediateNode = new IntermediateAstNode(node);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);
        }
        private void ProcessVar()
        {
            _lastIsOperator = null;

            var value = NameHelper.CreateName(_currToken.Content);

            var node = new VarAstExpression();

            node.Name = value;

            var intermediateNode = new IntermediateAstNode(node);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _state = State.GotName;
        }
        private void ProcessIsOperator()
        {
            var node = new BinaryOperatorAstExpression();

            node.KindOfOperator = KindOfOperator.Is;

            _lastIsOperator = node;

            var priority = OperatorsHelper.GetPriority(node.KindOfOperator);

            var intermediateNode = new IntermediateAstNode(node, KindOfIntermediateAstNode.BinaryOperator, priority);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _state = State.Init;
        }
        private void ProcessChannel()
        {
            _lastIsOperator = null;

            var name = NameHelper.CreateName(_currToken.Content);

#if DEBUG
            //Log($"name = {name}");
#endif

            var node = new ConstValueAstExpression();
            node.Value = name;

            var intermediateNode = new IntermediateAstNode(node);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);
        }
Пример #11
0
        private void StartProcessingFuzzyLogicNonNumericSequenceValue(StrongIdentifierValue value)
        {
            _fuzzyLogicNonNumericSequenceValue = new FuzzyLogicNonNumericSequenceValue();

            var node = new LogicalQueryNode();

            node.Kind = KindOfLogicalQueryNode.FuzzyLogicNonNumericSequence;

            node.FuzzyLogicNonNumericSequenceValue = _fuzzyLogicNonNumericSequenceValue;

            _fuzzyLogicNonNumericSequenceValue.AddIdentifier(value);

            var intermediateNode = new IntermediateAstNode(node);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _state = State.GotFuzzyLogicNonNumericSequenceItem;
        }
Пример #12
0
        private void ProcessConceptOrQuestionVar(StrongIdentifierValue value)
        {
#if DEBUG
            //Log($"value = {value}");
#endif

            var node = CreateLogicalQueryNodeByStrongIdentifierValue(value);

#if DEBUG
            //Log($"node = {node}");
#endif

            var intermediateNode = new IntermediateAstNode(node);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _state = State.GotConcept;
        }
        private void ProcessNullToken()
        {
            _context.Recovery(_currToken);

            var parser = new NullParser(_context);

            parser.Run();

#if DEBUG
            //Log($"parser.Result = {parser.Result}");
#endif

            var node = new ConstValueAstExpression();
            node.Value = parser.Result;

            var intermediateNode = new IntermediateAstNode(node);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);
        }
        private void ProcessUsualBinaryOperator(KindOfOperator kindOfOperator)
        {
            _lastIsOperator = null;

            var node = new BinaryOperatorAstExpression();

            node.KindOfOperator = kindOfOperator;

            var priority = OperatorsHelper.GetPriority(kindOfOperator);

#if DEBUG
            //Log($"priority = {priority}");
#endif

            var intermediateNode = new IntermediateAstNode(node, KindOfIntermediateAstNode.BinaryOperator, priority);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _state = State.Init;
        }
        private void ProcessRuleOrFact()
        {
            _context.Recovery(_currToken);

            var parser = new LogicalQueryParser(_context);

            parser.Run();

            var ruleInstanceItem = parser.Result;

#if DEBUG
            //Log($"ruleInstanceItem = {ruleInstanceItem}");
#endif

            var value = new RuleInstanceValue(ruleInstanceItem);
            var node  = new ConstValueAstExpression();
            node.Value = value;

            var intermediateNode = new IntermediateAstNode(node);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);
        }
Пример #16
0
        private void ProcessGroup()
        {
            var node = new LogicalQueryNode();

            _lastLogicalQueryNode = node;
            node.Kind             = KindOfLogicalQueryNode.Group;

            var parser = new LogicalExpressionParser(_context, true);

            parser.Run();

#if DEBUG
            //Log($"parser.Result = {parser.Result}");
#endif

            node.Left = parser.Result;

            var intermediateNode = new IntermediateAstNode(node);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _state = State.GotPredicate;
        }
Пример #17
0
        private void ProcessPredicate(StrongIdentifierValue name)
        {
            var node = new LogicalQueryNode();

            _lastLogicalQueryNode = node;
            node.Kind             = KindOfLogicalQueryNode.Relation;

            node.Name = name;

            node.ParamsList = new List <LogicalQueryNode>();

            var priority = OperatorsHelper.GetPriority(KindOfOperator.Predicate);

#if DEBUG
            //Log($"priority = {priority}");
#endif

            var intermediateNode = new IntermediateAstNode(node, KindOfIntermediateAstNode.UnaryOperator, priority);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _state = State.WaitForPredicateParameter;
        }
        private void ProcessLogicalQueryOperator()
        {
            _lastIsOperator = null;

            //_context.Recovery(_currToken);
            var parser = new LogicalQueryOperationParser(_context);

            parser.Run();

            var resultItem = parser.Result;

#if DEBUG
            //Log($"resultItem = {resultItem}");
#endif

            var node = new UnaryOperatorAstExpression();
            node.KindOfOperator = KindOfOperator.CallLogicalQuery;

            var priority = OperatorsHelper.GetPriority(node.KindOfOperator);

#if DEBUG
            //Log($"priority = {priority}");
#endif

            var intermediateNode = new IntermediateAstNode(node, KindOfIntermediateAstNode.UnaryOperator, priority);

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            var valueNode = new ConstValueAstExpression();
            valueNode.Value = resultItem;

            var valueIntermediateNode = new IntermediateAstNode(valueNode);

            AstNodesLinker.SetNode(valueIntermediateNode, _nodePoint);

            _state = State.GotCallLogicalQueryOperator;
        }
Пример #19
0
        private void Run9()
        {
            _nodePoint = new IntermediateAstNodePoint();

            _logger.Info($"_nodePoint = {_nodePoint}");

            var varNode = new TstVarAstExpression();

            varNode.Name = "a";

            var intermediateNode = new IntermediateAstNode(varNode);

            _logger.Info($"intermediateNode = {intermediateNode}");

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _logger.Info($"_nodePoint = {_nodePoint}");

            var binOpNode = new TstBinaryAstExpression();

            binOpNode.KindOfOperator = TstKindOfOperator.Assign;

            _logger.Info($"binOpNode = {binOpNode}");

            var priority = GetPriority(binOpNode.Kind, binOpNode.KindOfOperator);

            _logger.Info($"priority = {priority}");

            intermediateNode = new IntermediateAstNode(binOpNode, KindOfIntermediateAstNode.BinaryOperator, priority);

            _logger.Info($"intermediateNode = {intermediateNode}");

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _logger.Info($"_nodePoint = {_nodePoint}");

            var varNode2 = new TstVarAstExpression();

            varNode2.Name = "b";

            intermediateNode = new IntermediateAstNode(varNode2);

            _logger.Info($"intermediateNode = {intermediateNode}");

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _logger.Info($"_nodePoint = {_nodePoint}");

            binOpNode = new TstBinaryAstExpression();
            binOpNode.KindOfOperator = TstKindOfOperator.Assign;

            _logger.Info($"binOpNode = {binOpNode}");

            priority = GetPriority(binOpNode.Kind, binOpNode.KindOfOperator);

            _logger.Info($"priority = {priority}");

            intermediateNode = new IntermediateAstNode(binOpNode, KindOfIntermediateAstNode.BinaryOperator, priority);

            _logger.Info($"intermediateNode = {intermediateNode}");

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _logger.Info($"_nodePoint = {_nodePoint}");

            var numNode = new TstNumberAstExpressionNode();

            numNode.Value = 12;

            _logger.Info($"numNode = {numNode}");

            intermediateNode = new IntermediateAstNode(numNode);

            _logger.Info($"intermediateNode = {intermediateNode}");

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _logger.Info($"_nodePoint = {_nodePoint}");

            binOpNode = new TstBinaryAstExpression();
            binOpNode.KindOfOperator = TstKindOfOperator.Plus;

            _logger.Info($"binOpNode = {binOpNode}");

            priority = GetPriority(binOpNode.Kind, binOpNode.KindOfOperator);

            _logger.Info($"priority = {priority}");

            intermediateNode = new IntermediateAstNode(binOpNode, KindOfIntermediateAstNode.BinaryOperator, priority);

            _logger.Info($"intermediateNode = {intermediateNode}");

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _logger.Info($"_nodePoint = {_nodePoint}");

            numNode       = new TstNumberAstExpressionNode();
            numNode.Value = 5;

            _logger.Info($"numNode = {numNode}");

            intermediateNode = new IntermediateAstNode(numNode);

            _logger.Info($"intermediateNode = {intermediateNode}");

            AstNodesLinker.SetNode(intermediateNode, _nodePoint);

            _logger.Info($"_nodePoint = {_nodePoint}");

            var resultExr = (TstBaseAstExpression)_nodePoint.BuildExpr();

            _logger.Info($"resultExr = {resultExr}");

            var str = resultExr.GetDbgString();

            _logger.Info($"str = '{str}'");

            var calcResult = resultExr.Calc();

            _logger.Info($"calcResult = {calcResult}");

            _logger.Info($"varNode.Value = {varNode.Value}");
            _logger.Info($"varNode2.Value = {varNode2.Value}");
        }
Пример #20
0
        /// <inheritdoc/>
        protected override void OnRun()
        {
#if DEBUG
            //Log($"_state = {_state}");
            //Log($"_isGroup = {_isGroup}");
            //Log($"_currToken = {_currToken}");
            //Log($"Result = {Result}");
            //Log($"_nodePoint = {_nodePoint}");
#endif

            if (_terminatingTokenKindList.Contains(_currToken.TokenKind))
            {
                _context.Recovery(_currToken);
                Exit();
                return;
            }

            switch (_state)
            {
            case State.Init:
                switch (_currToken.TokenKind)
                {
                case TokenKind.Word:
                case TokenKind.LogicalVar:
                case TokenKind.Identifier:
                    ProcessWord();
                    break;

                case TokenKind.Entity:
                {
                    var name = NameHelper.CreateName(_currToken.Content);

#if DEBUG
                    //Log($"name = {name}");
#endif

                    var node = new LogicalQueryNode();
                    node.Kind = KindOfLogicalQueryNode.Entity;
                    node.Name = name;

                    var intermediateNode = new IntermediateAstNode(node);

                    AstNodesLinker.SetNode(intermediateNode, _nodePoint);

                    _state = State.GotEntity;
                }
                break;

                default:
                    throw new UnexpectedTokenException(_currToken);
                }
                break;

            case State.WaitForPredicateParameter:
                switch (_currToken.TokenKind)
                {
                case TokenKind.Entity:
                case TokenKind.LogicalVar:
                {
                    _context.Recovery(_currToken);

                    var parser = new LogicalExpressionParser(_context);
                    parser.Run();

#if DEBUG
                    //Log($"parser.Result = {parser.Result}");
#endif

                    _lastLogicalQueryNode.ParamsList.Add(parser.Result);

                    _state = State.GotPredicateParameter;
                }
                break;

                case TokenKind.Word:
                case TokenKind.Identifier:
                {
                    switch (_currToken.KeyWordTokenKind)
                    {
                    case KeyWordTokenKind.Null:
                    {
                        _context.Recovery(_currToken);

                        var parser = new NullParser(_context);
                        parser.Run();

#if DEBUG
                        //Log($"parser.Result = {parser.Result}");
#endif

                        var node = new LogicalQueryNode();
                        node.Kind  = KindOfLogicalQueryNode.Value;
                        node.Value = parser.Result;

                        _lastLogicalQueryNode.ParamsList.Add(node);

                        _state = State.GotPredicateParameter;
                    }
                    break;

                    default:
                    {
                        var nextToken = _context.GetToken();

                        var terminatingTokenKindList = new List <TokenKind>()
                        {
                            TokenKind.CloseRoundBracket
                        };

                        if (nextToken.TokenKind != TokenKind.OpenRoundBracket)
                        {
                            terminatingTokenKindList.Add(TokenKind.Comma);
                        }

#if DEBUG
                        //if (_currToken.Content == "distance")
                        //{
                        //throw new NotImplementedException();
                        //}
#endif

#if DEBUG
                        //Log($"nextToken = {nextToken}");
#endif

                        _context.Recovery(_currToken);
                        _context.Recovery(nextToken);


                        var parser = new LogicalExpressionParser(_context, terminatingTokenKindList);
                        parser.Run();

#if DEBUG
                        //Log($"parser.Result = {parser.Result}");
                        //if (_currToken.Content == "distance")
                        //{
                        //    //throw new NotImplementedException();
                        //}
#endif

                        _lastLogicalQueryNode.ParamsList.Add(parser.Result);

                        _state = State.GotPredicateParameter;
                    }
                    break;
                    }
                }
                break;


                case TokenKind.Number:
                {
                    _context.Recovery(_currToken);

                    var parser = new NumberParser(_context);
                    parser.Run();

#if DEBUG
                    //Log($"parser.Result = {parser.Result}");
#endif
                    var node = new LogicalQueryNode();
                    node.Kind  = KindOfLogicalQueryNode.Value;
                    node.Value = parser.Result;

                    _lastLogicalQueryNode.ParamsList.Add(node);

                    _state = State.GotPredicateParameter;
                }
                break;

                default:
                    throw new UnexpectedTokenException(_currToken);
                }
                break;

            case State.GotPredicateParameter:
                switch (_currToken.TokenKind)
                {
                case TokenKind.CloseRoundBracket:
                    _state = State.GotPredicate;
                    break;

                case TokenKind.Comma:
                    _state = State.WaitForPredicateParameter;
                    break;

                default:
                    throw new UnexpectedTokenException(_currToken);
                }
                break;

            case State.GotPredicate:
                switch (_currToken.TokenKind)
                {
                case TokenKind.And:
                    ProcessBinaryOperator(KindOfOperatorOfLogicalQueryNode.And);
                    break;

                case TokenKind.Or:
                    ProcessBinaryOperator(KindOfOperatorOfLogicalQueryNode.Or);
                    break;

                case TokenKind.Comma:
                    _state = State.WaitForPredicateParameter;
                    break;

                case TokenKind.CloseRoundBracket:
                    if (_isGroup)
                    {
                        Exit();
                        break;
                    }
                    throw new UnexpectedTokenException(_currToken);

                default:
                    throw new UnexpectedTokenException(_currToken);
                }
                break;

            case State.GotConcept:
                switch (_currToken.TokenKind)
                {
                case TokenKind.Word:
                    switch (_currToken.KeyWordTokenKind)
                    {
                    case KeyWordTokenKind.Is:
                        ProcessBinaryOperator(KindOfOperatorOfLogicalQueryNode.Is);
                        break;

                    default:
                        throw new UnexpectedTokenException(_currToken);
                    }
                    break;

                case TokenKind.More:
                    ProcessBinaryOperator(KindOfOperatorOfLogicalQueryNode.More);
                    break;

                case TokenKind.MoreOrEqual:
                    ProcessBinaryOperator(KindOfOperatorOfLogicalQueryNode.MoreOrEqual);
                    break;

                case TokenKind.Less:
                    ProcessBinaryOperator(KindOfOperatorOfLogicalQueryNode.Less);
                    break;

                case TokenKind.LessOrEqual:
                    ProcessBinaryOperator(KindOfOperatorOfLogicalQueryNode.LessOrEqual);
                    break;

                default:
                    throw new UnexpectedTokenException(_currToken);
                }
                break;

            case State.GotOperator:
                switch (_currToken.TokenKind)
                {
                case TokenKind.Word:
                case TokenKind.Identifier:
                    ProcessWord();
                    break;

                case TokenKind.OpenRoundBracket:
                    ProcessGroup();
                    break;

                case TokenKind.Not:
                    ProcessUnaryOperator(KindOfOperatorOfLogicalQueryNode.Not);
                    break;

                case TokenKind.LogicalVar:
                {
                    var value = NameHelper.CreateName(_currToken.Content);

                    ProcessConceptOrQuestionVar(value);
                }
                break;

                case TokenKind.Number:
                {
                    _context.Recovery(_currToken);

                    var parser = new NumberParser(_context);
                    parser.Run();

#if DEBUG
                    //Log($"parser.Result = {parser.Result}");
#endif
                    var node = new LogicalQueryNode();
                    node.Kind  = KindOfLogicalQueryNode.Value;
                    node.Value = parser.Result;

                    var intermediateNode = new IntermediateAstNode(node);

                    AstNodesLinker.SetNode(intermediateNode, _nodePoint);

                    _state = State.GotConcept;
                }
                break;

                default:
                    throw new UnexpectedTokenException(_currToken);
                }
                break;

            case State.GotFuzzyLogicNonNumericSequenceItem:
                switch (_currToken.TokenKind)
                {
                case TokenKind.Word:
                case TokenKind.Identifier:
                {
                    var value = NameHelper.CreateName(_currToken.Content);

#if DEBUG
                    //Log($"value = {value}");
#endif

                    _fuzzyLogicNonNumericSequenceValue.AddIdentifier(value);

#if DEBUG
                    //Log($"_fuzzyLogicNonNumericSequenceValue = {_fuzzyLogicNonNumericSequenceValue}");
#endif
                }
                break;

                case TokenKind.More:
                case TokenKind.MoreOrEqual:
                case TokenKind.Less:
                case TokenKind.LessOrEqual:
                    _context.Recovery(_currToken);
                    _state = State.GotConcept;
                    break;

                default:
                    throw new UnexpectedTokenException(_currToken);
                }
                break;

            default:
                throw new ArgumentOutOfRangeException(nameof(_state), _state, null);
            }
        }