private void ProcessNullToken()
{
_context.Recovery(_currToken);
var parser = new NullParser(_context);
parser.Run();
#if DEBUG
//Log($"parser.Result = {parser.Result}");
#endif
var node = new ConstValueAstExpression();
node.Value = parser.Result;
var intermediateNode = new IntermediateAstNode(node);
AstNodesLinker.SetNode(intermediateNode, _nodePoint);
}
/// <inheritdoc/>
protected override void OnRun()
{
#if DEBUG
//Log($"_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);
}
}