private void HandleSyntaxTree(SyntaxTreeAnalysisContext context)
{
var tree = context.Tree;
var root = tree.GetRoot(context.CancellationToken);
// don't process empty files
if (root.FullSpan.IsEmpty)
{
return;
}
if (!context.Options.TryGetEditorConfigOption(CodeStyleOptions.FileHeaderTemplate, tree, out string fileHeaderTemplate) ||
string.IsNullOrEmpty(fileHeaderTemplate))
{
return;
}
var fileHeader = FileHeaderHelper.ParseFileHeader(root);
if (fileHeader.IsMissing)
{
context.ReportDiagnostic(Diagnostic.Create(MissingHeaderDescriptor, fileHeader.GetLocation(tree)));
return;
}
var expectedFileHeader = fileHeaderTemplate.Replace("{fileName}", Path.GetFileName(tree.FilePath));
if (!CompareCopyrightText(expectedFileHeader, fileHeader.CopyrightText))
{
context.ReportDiagnostic(Diagnostic.Create(InvalidHeaderDescriptor, fileHeader.GetLocation(tree)));
return;
}
}
private async Task <SyntaxNode> GetTransformedSyntaxRootAsync(Document document, CancellationToken cancellationToken)
{
var tree = await document.GetRequiredSyntaxTreeAsync(cancellationToken).ConfigureAwait(false);
var root = await tree.GetRootAsync(cancellationToken).ConfigureAwait(false);
if (!document.Project.AnalyzerOptions.TryGetEditorConfigOption(CodeStyleOptions2.FileHeaderTemplate, tree, out string fileHeaderTemplate) ||
string.IsNullOrEmpty(fileHeaderTemplate))
{
// This exception would show up as a gold bar, but as indicated we do not believe this is reachable.
throw ExceptionUtilities.Unreachable;
}
var expectedFileHeader = fileHeaderTemplate.Replace("{fileName}", Path.GetFileName(document.FilePath));
var fileHeader = FileHeaderHelper.ParseFileHeader(root);
SyntaxNode newSyntaxRoot;
if (fileHeader.IsMissing)
{
newSyntaxRoot = AddHeader(document, root, expectedFileHeader);
}
else
{
newSyntaxRoot = ReplaceHeader(document, root, expectedFileHeader);
}
return(newSyntaxRoot);
}