private void ExecuteSymbolActionsForAnalyzer(
ISymbol symbol,
DiagnosticAnalyzer analyzer,
ImmutableArray <ImmutableArray <SymbolAnalyzerAction> > actionsByKind,
Action <Diagnostic> addDiagnosticForSymbol,
CancellationToken cancellationToken)
{
// Invoke symbol analyzers only for source symbols.
var declaringSyntaxRefs = symbol.DeclaringSyntaxReferences;
if ((int)symbol.Kind < actionsByKind.Length && declaringSyntaxRefs.Any(s => s.SyntaxTree != null))
{
analyzerExecutor.ExecuteSymbolActions(actionsByKind[(int)symbol.Kind], symbol, addDiagnosticForSymbol);
}
}
