/// <summary>
/// Given <paramref name="document" /> returns <see cref="Statistic"/> about it
/// </summary>
/// <param name="document">Document to return stats about</param>
/// <param name="cancellationToken">Cancellation token</param>
/// <returns>Statistics about given document</returns>
private static async Task <Statistic> GetAnalyzerStatisticsAsync(Document document, CancellationToken cancellationToken)
{
var tree = await document.GetSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var root = await tree.GetRootAsync(cancellationToken).ConfigureAwait(false);
var numberOfTokens = root.DescendantTokens(descendIntoTrivia: true).Count();
var numberOfTrivia = root.DescendantTrivia(descendIntoTrivia: true).Count();
var nodes = root.DescendantNodesAndSelf(descendIntoTrivia: true).ToArray();
var numberOfNodes = nodes.Length;
var numberOfMemberAccesses = nodes.Count(n => n.IsKind(SyntaxKind.SimpleMemberAccessExpression));
var numberOfConditionalAccesses = nodes.Count(n => n.IsKind(SyntaxKind.ConditionalAccessExpression));
var numberOfInvocations = nodes.Count(n => n.IsKind(SyntaxKind.InvocationExpression));
var numberOfElementAccesses = nodes.Count(n => n.IsKind(SyntaxKind.ElementAccessExpression));
var numberOfIdentifierNames = nodes.Count(n => n.IsKind(SyntaxKind.IdentifierName));
var numberOfObjectCreations = nodes.Count(n => n.IsKind(SyntaxKind.ObjectCreationExpression));
var numberOfClassDeclarations = nodes.Count(n => n.IsKind(SyntaxKind.ClassDeclaration));
var nodesStats = new NodesStatistic(
numberOfNodes,
numberOfMemberAccesses,
numberOfConditionalAccesses,
numberOfInvocations,
numberOfElementAccesses,
numberOfIdentifierNames,
numberOfObjectCreations,
numberOfClassDeclarations);
return(new Statistic(nodesStats, numberOfTokens, numberOfTrivia));
}
/// <summary>
/// Initializes a new instance of the <see cref="Statistic"/> struct.
/// </summary>
/// <param name="nodesStatistic">Detailed stats about nodes</param>
/// <param name="numberOfTokens">Number of tokens</param>
/// <param name="numberOfTrivia">Number of trivia</param>
public Statistic(NodesStatistic nodesStatistic, int numberOfTokens, int numberOfTrivia)
{
NodesStatistic = nodesStatistic;
NumberOfTokens = numberOfTokens;
NumberOfTrivia = numberOfTrivia;
}