private async Task <Document> GetOrCreateSuppressionsDocumentAsync(Document document, CancellationToken c)
{
int index = 1;
var suppressionsFileName = s_globalSuppressionsFileName + _fixer.DefaultFileExtension;
if (document.Name == suppressionsFileName)
{
index++;
suppressionsFileName = s_globalSuppressionsFileName + index.ToString() + _fixer.DefaultFileExtension;
}
Document suppressionsDoc = null;
while (suppressionsDoc == null)
{
var hasDocWithSuppressionsName = false;
foreach (var d in document.Project.Documents)
{
if (d.Name == suppressionsFileName)
{
// Existing global suppressions file, see if this file only has global assembly attributes.
hasDocWithSuppressionsName = true;
var t = await d.GetSyntaxTreeAsync(c).ConfigureAwait(false);
var r = await t.GetRootAsync(c).ConfigureAwait(false);
if (r.ChildNodes().All(n => _fixer.IsAttributeListWithAssemblyAttributes(n)))
{
suppressionsDoc = d;
break;
}
}
}
if (suppressionsDoc == null)
{
if (hasDocWithSuppressionsName)
{
index++;
suppressionsFileName = s_globalSuppressionsFileName + index.ToString() + _fixer.DefaultFileExtension;
}
else
{
// Create an empty global suppressions file.
suppressionsDoc = document.Project.AddDocument(suppressionsFileName, string.Empty);
}
}
}
return(suppressionsDoc);
}