private static (IXor2ComputationNodeReference, AlreadyProcessedSyntaxNodes) _DispatchXor7ExpressionSyntax(IXor7ExpressionSyntax expressionSyntax, MethodBlockAnalysis methodAnalysis, AlreadyProcessedSyntaxNodes processedNodes, TextSpan span) => expressionSyntax.Dispatch
static public Maybe <FuncResult <IXor4IdentifierOriginSyntax, SimpleControlFlowAnalysisError> > GetIdentifierDeclarationSyntax(IdentifierNameSyntax syntax, MethodBlockAnalysis methodAnalysis)
{
Maybe <FuncResult <IXor4IdentifierOriginSyntax, SimpleControlFlowAnalysisError> > __Ok(IXor4IdentifierOriginSyntax ok) => new FuncResult <IXor4IdentifierOriginSyntax, SimpleControlFlowAnalysisError>(ok);
Maybe <FuncResult <IXor4IdentifierOriginSyntax, SimpleControlFlowAnalysisError> > __Error(SimpleControlFlowAnalysisError error) => new FuncResult <IXor4IdentifierOriginSyntax, SimpleControlFlowAnalysisError>(error);
var loopLikeSyntax = syntax.Ancestors().FirstOrDefault(x => SyntaxOperations.IsLoopLike(x));
if (loopLikeSyntax != null)
{
return(__Error(SimpleControlFlowAnalysisError.NotALinearControlFlow(loopLikeSyntax)));
}
else
{
var symbolInfo = methodAnalysis.SemanticModel.GetSymbolInfo(syntax);
switch (symbolInfo.Symbol.Kind)
{
case SymbolKind.NamedType:
case SymbolKind.Namespace:
{
return(Maybe.NoValue);
}
case SymbolKind.Local:
{
var declaratorSyntax = (VariableDeclaratorSyntax)symbolInfo.Symbol.DeclaringSyntaxReferences.Single().GetSyntax();
var delarationSyntax = declaratorSyntax.Ancestors().OfType <LocalDeclarationStatementSyntax>().First();
return(__Ok(new Xor4IdentifierOriginSyntax(delarationSyntax)));
}
case SymbolKind.Field:
{
var declaringSyntax = (FieldDeclarationSyntax)symbolInfo.Symbol.DeclaringSyntaxReferences.Single().GetSyntax();
return(__Ok(new Xor4IdentifierOriginSyntax(declaringSyntax)));
}
case SymbolKind.Property:
{
var declaringSyntax = (PropertyDeclarationSyntax)symbolInfo.Symbol.DeclaringSyntaxReferences.Single().GetSyntax();
return(__Ok(new Xor4IdentifierOriginSyntax(declaringSyntax)));
}
case SymbolKind.Parameter:
{
var declaringSyntax = (ParameterSyntax)symbolInfo.Symbol.DeclaringSyntaxReferences.Single().GetSyntax();
return(__Ok(new Xor4IdentifierOriginSyntax(declaringSyntax)));
}
default:
throw NotPreparedForThatCase.UnexpectedEnumException(symbolInfo.Symbol.Kind);
}
}
}
static public (IXor2ComputationNodeReference, AlreadyProcessedSyntaxNodes) FromReturnStatement(ReturnStatementSyntax returnSyntax, MethodBlockAnalysis methodAnalysis, TextSpan span, AlreadyProcessedSyntaxNodes processedNodesOrNull = null)
{
Throw.IfNot(methodAnalysis.DataFlowAnalysis.Succeeded);
var processedNodes = (processedNodesOrNull ?? new AlreadyProcessedSyntaxNodes());
if (!span.Contains(returnSyntax.Span))
{
return(_CreatePair(Xor2ComputationNodeReference.OutOfScope(returnSyntax), processedNodes));
}
var rhsSyntax = SyntaxOperations.GetRightHandSideExpression(returnSyntax);
var previous = _DispatchXor7ExpressionSyntax(rhsSyntax, methodAnalysis, processedNodes ?? new AlreadyProcessedSyntaxNodes(), span);
var node = ComputationGraphNode.FromReturnStatement(returnSyntax, previous.Item1);
if (!previous.Item1.IsA)
{
return(_CreatePair(node, previous.Item2));
}
return(_CreatePair(node, previous.Item2));
}