protected static void GatherDiagnostics(
SyntaxElement root,
List <Diagnostic> diagnostics,
DiagnosticsInclude include,
CancellationToken cancellationToken = default(CancellationToken))
{
cancellationToken.ThrowIfCancellationRequested();
bool includeSyntax = (include & DiagnosticsInclude.Syntactic) != 0;
bool includeSemantic = (include & DiagnosticsInclude.Semantic) != 0;
bool includeExpansion = (include & DiagnosticsInclude.Expansion) != 0;
var fnDescend = (include == DiagnosticsInclude.Syntactic)
? (Func <SyntaxElement, bool>)((SyntaxElement e) => e.ContainsSyntaxDiagnostics)
: null;
SyntaxElement.WalkElements(root,
fnBefore: element =>
{
if (element.HasSyntaxDiagnostics && includeSyntax)
{
// each syntax diagnostic is located at the element that carries it.
diagnostics.AddRange(element.SyntaxDiagnostics.Select(d => d.HasLocation ? d : SetLocation(d, element)));
}
if (includeSemantic && element is SyntaxNode node && node.SemanticDiagnostics.Count > 0)
{
diagnostics.AddRange(node.SemanticDiagnostics);
}
},
internal void InitializeTriviaStarts()
{
SyntaxElement.WalkElements(
this.Root,
fnBefore: element =>
{
System.Diagnostics.Debug.Assert(element.Parent == null || element.Parent._triviaStart >= 0);
element._triviaStart = (element.Parent?._triviaStart ?? 0) + element.OffsetInParent;
});
}