private static IMappingSourceFinder GetMappingSourceFindersForQueryExpression(SemanticModel semanticModel, SyntaxGenerator syntaxGenerator, QueryExpressionSyntax queryExpression, IReadOnlyList <ISymbol> localSymbols)
{
var queryLocation = queryExpression.GetLocation().SourceSpan;
var queryVariablesSourceFinders = localSymbols.Where(s => s is IRangeVariableSymbol).Where(s =>
{
var symbolLocation = s.Locations.First().SourceSpan;
return(symbolLocation.Start >= queryLocation.Start && symbolLocation.End <= queryLocation.End);
}).Select(s =>
{
var type = semanticModel.GetTypeForSymbol(s);
if (ObjectHelper.IsSimpleType(type))
{
return(null);
}
if (type is INamedTypeSymbol namedType && type.ToDisplayString().StartsWith("System.Linq.IGrouping<"))
{
var keyType = namedType.TypeArguments[0];
if (ObjectHelper.IsSimpleType(keyType) == false)
{
var accessor = syntaxGenerator.MemberAccessExpression(syntaxGenerator.IdentifierName(s.Name), syntaxGenerator.IdentifierName("Key"));
return((IMappingSourceFinder) new OrderedSourceFinder(new []
{
new ObjectMembersMappingSourceFinder(type, syntaxGenerator.IdentifierName(s.Name), syntaxGenerator),
new ObjectMembersMappingSourceFinder(keyType, accessor, syntaxGenerator)
}));
}
}
return(new ObjectMembersMappingSourceFinder(type, syntaxGenerator.IdentifierName(s.Name), syntaxGenerator));
}).Where(x => x != null).ToList();
return(new OrderedSourceFinder(queryVariablesSourceFinders));
}
private bool?CheckIfAllElementsAreAtTheSameLine(QueryExpressionSyntax query)
{
var fileLinePositionSpan = query.GetLocation().GetLineSpan();
if (fileLinePositionSpan.IsValid)
{
return(fileLinePositionSpan.StartLinePosition.Line == fileLinePositionSpan.EndLinePosition.Line);
}
return(null);
}
private Diagnostic AnalyzeQueryExpression(QueryExpressionSyntax query, SemanticModel semanticModel)
{
var hasLinqMethods = false;
if (TryFindSyntaxNode(query, out var syntaxNode, out var identifier))
{
hasLinqMethods = syntaxNode
.DescendantNodes()
.OfType <MemberAccessExpressionSyntax>()
.SelectMany(_ => semanticModel.LookupSymbols(_.GetLocation().SourceSpan.Start))
.Select(_ => _.ContainingNamespace?.ToString())
.Where(_ => _ != null)
.Any(_ => _.StartsWith("System.Linq", StringComparison.OrdinalIgnoreCase));
}
return(hasLinqMethods
? ReportIssue(identifier, query.GetLocation())
: null);
}
