/// <summary>
/// Populates collections of exemptions from the XML of additional file(s).
/// </summary>
/// <param name="rootElement">
/// Root node of an XML document containing exemptions for fields, string, files, assemblies, types, members, and namespaces.
/// </param>
protected override void LoadConfigurations(XElement rootElement, string filePath)
{
if (TryGetRootElementDiagnostic(rootElement, "Exemptions", filePath, StringsShouldBeInResourcesAnalyzer.FileParseRule, out var diagnostic))
{
_additionalFileService.ParsingDiagnostics.Add(diagnostic);
}
_exemptStrings.UnionWith(rootElement.Elements("String"));
_exemptFilenames.UnionWith(rootElement.Elements("Filename"));
_exemptAssemblies.UnionWith(rootElement.Elements("Assembly"));
_exemptNamespaces.UnionWith(rootElement.Elements("Namespace"));
LoadScopeAndOrInvocationExemptions(rootElement.Elements("Field"), _exemptFieldScopes, _exemptFields);
LoadScopeAndOrInvocationExemptions(rootElement.Elements("Type"), _exemptTypeScopes, _exemptTypes);
LoadScopeAndOrInvocationExemptions(rootElement.Elements("Member"), _exemptMemberScopes, _exemptMembers);
}
private static void LoadScopeAndOrInvocationExemptions(
IEnumerable <XElement> exemptionNodes,
ExemptionCollection scopeExemptions,
ExemptionCollection invocationExemptions)
{
// Type and member exemptions will, by default, apply to both scopes and invocations.
// This method allows users to specify an "AppliesTo" attribute to control whether an
// exemption applies to only one or the other.
foreach (var exemption in exemptionNodes)
{
var appliesAttribute = exemption.Attribute("AppliesTo");
if (appliesAttribute != null)
{
var attributePairs = exemption.Attributes()
.Where(x => x != appliesAttribute)
.Select(x => Tuple.Create(x.Name.LocalName, x.Value)).ToArray();
AttributeCollection attributes = null;
if (attributePairs.Length > 0)
{
attributes = new AttributeCollection(attributePairs);
}
if (string.Equals(appliesAttribute.Value, "Scope", StringComparison.OrdinalIgnoreCase))
{
scopeExemptions.Add(exemption.Value, attributes);
}
else
{
invocationExemptions.Add(exemption.Value, attributes);
}
}
else
{
var exemptions = new[] { exemption };
scopeExemptions.UnionWith(exemptions);
invocationExemptions.UnionWith(exemptions);
}
}
}
