protected void CheckComplexity <TSyntax>(SyntaxNodeAnalysisContext context, Func <TSyntax, Location> getLocation, Func <TSyntax, SyntaxNode> getNodeToCheck, string declarationType)
where TSyntax : SyntaxNode
{
var node = (TSyntax)context.Node;
var walker = new CyclomaticComplexityWalker();
var nodeToCheck = getNodeToCheck(node);
if (nodeToCheck == null)
{
return;
}
walker.Visit(nodeToCheck);
if (walker.CyclomaticComplexity > Maximum)
{
context.ReportDiagnostic(
Diagnostic.Create(
Rule,
getLocation(node),
walker.IncrementLocations.ToAdditionalLocations(),
walker.IncrementLocations.ToProperties(),
new object[] { Maximum, walker.CyclomaticComplexity, declarationType }));
}
}
public override int GetComplexity(SyntaxNode node)
{
var walker = new CyclomaticComplexityWalker();
walker.Visit(node);
return(walker.CyclomaticComplexity);
}
/// <summary>
/// Gets info about cyclomatic complexity, counting the number of predicates within the scope of rootNode and within each nested function
/// (methods and anonymous functions).
/// </summary>
/// <param name="rootNode">The SyntaxNode to measure cyclomatic complexity within</param>
/// <returns>A sequence of RegionInfo objects, each containing the region-defining node (either rootNode or a function-defining node)
/// and cyclomatic complexity values for the region. There will always be at least one RegionInfo returned for the rootNode,
/// plus one for each nested function.</returns>
public static IEnumerable <CyclomaticComplexityWalker.RegionInfo> GetCyclomaticComplexityInfo(this SyntaxNode rootNode, SemanticModel model)
{
var walker = new CyclomaticComplexityWalker(rootNode, model);
walker.Visit(rootNode);
return(walker.Results);
}