static FuzzyTableModel ParseTableForeignKey(SyntaxNodeAnalysisContext context, InvocationExpressionSyntax expression, FuzzyDatabaseModel partialDatabase) { var innerModel = ParseTableChain(context, expression, partialDatabase); var arguments = AH.ParseArguments(context, expression); var keyColumnsArg = arguments["keyColumns"]; var referenceTableArg = arguments["referenceTable"]; var referenceColumnsArg = arguments["referenceColumns"]; var updateActionArg = arguments["updateAction"]; var deleteActionArg = arguments["deleteAction"]; var nameArg = arguments["name"]; var fuzzyForeignKey = new FuzzyForeignKeyModel(); if (AH.IsNull(context, keyColumnsArg)) { context.ReportDiagnostic(BuilderError.ArgumentNull("keyColumns").MakeDiagnostic(keyColumnsArg.Expression.GetLocation())); fuzzyForeignKey.KeyColumns = new Optional <ImmutableArray <(FuzzyColumnModel, Location)> >(); } else { var keyColumns = AH.ParseMultiProperty(context, keyColumnsArg); if (keyColumns.HasValue) { fuzzyForeignKey.KeyColumns = AH.MatchColumns(context, keyColumns.Value, innerModel.Columns, ToString(innerModel.Name)); } } if (AH.IsNull(context, referenceTableArg)) { context.ReportDiagnostic(BuilderError.ArgumentNull("referenceTable").MakeDiagnostic(referenceTableArg.Expression.GetLocation())); fuzzyForeignKey.ReferenceTableSelector = new Optional <(FuzzyProperty, Location)>(); } else { var selector = AH.ParseSelector(context, referenceTableArg); fuzzyForeignKey.ReferenceTableSelector = selector.HasValue ? AH.Just((selector.Value, (referenceTableArg.Expression as LambdaExpressionSyntax).Body.GetLocation())) : new Optional <(FuzzyProperty, Location)>(); } if (AH.IsNull(context, referenceColumnsArg)) { context.ReportDiagnostic(BuilderError.ArgumentNull("referenceColumns").MakeDiagnostic(referenceColumnsArg.Expression.GetLocation())); fuzzyForeignKey.ReferenceColumnSelectors = new Optional <ImmutableArray <(FuzzyProperty, Location)> >(); } else { fuzzyForeignKey.ReferenceColumnSelectors = AH.ParseMultiProperty(context, referenceColumnsArg); } if (fuzzyForeignKey.KeyColumns.HasValue && fuzzyForeignKey.ReferenceColumnSelectors.HasValue && fuzzyForeignKey.KeyColumns.Value.Length != fuzzyForeignKey.ReferenceColumnSelectors.Value.Length) { context.ReportDiagnostic(ModelBuilderError.ForeignKeyColumnCountsDontMatch().MakeDiagnostic(AH.DeconstructLambda(keyColumnsArg).Body.GetLocation(), new List <Location>() { AH.DeconstructLambda(referenceColumnsArg).Body.GetLocation() })); } fuzzyForeignKey.UpdateAction = AH.ParseConstantArgument(context, updateActionArg, () => AH.Just(ForeignKeyAction.Cascade)); fuzzyForeignKey.DeleteAction = AH.ParseConstantArgument(context, deleteActionArg, () => AH.Just(ForeignKeyAction.Cascade)); innerModel.ForeignKeys.Add(fuzzyForeignKey); return(innerModel); }