internal static string GetTargetFromAttributeOrSymbol <TExpected>(ExemptionAttribute exemptionAttribute, ISymbol decoratedSymbol)
{
if (!string.IsNullOrWhiteSpace(exemptionAttribute.Target))
{
return(exemptionAttribute.Target);
}
if (decoratedSymbol is TExpected)
{
return(decoratedSymbol.GetFullName());
}
var attributeName = exemptionAttribute.Name;
var scopeName = Enum.GetName(typeof(ExemptionScope), exemptionAttribute.Scope);
throw new AttributeMissingTargetException(
string.Format(CultureInfo.CurrentCulture, "Attribute {0} is missing a Target value.", attributeName),
attributeName,
scopeName);
}
private void AddExemptionsFromAttributes(IEnumerable <AttributeData> attributes, SyntaxNode decoratedSyntax, SemanticModel semanticModel)
{
foreach (var attribute in attributes)
{
var attributeName = attribute.AttributeClass.Name;
if (ExemptionAttributeNames.Contains(attributeName))
{
var exemptionAttribute = new ExemptionAttribute(attribute);
switch (exemptionAttribute.Name)
{
case ExemptFromStringLiteralsRuleAttributeName:
case ImplementationAllowedToUseStringLiteralsAttributeName:
AddScopeExemption(exemptionAttribute, decoratedSyntax.GetDeclaredOrReferencedSymbol(semanticModel));
break;
case AcceptsStringLiteralArgumentsAttributeName:
case AllowExternalCodeToAcceptStringLiteralArgumentsAttributeName:
AddInvocationExemption(exemptionAttribute, decoratedSyntax.GetDeclaredOrReferencedSymbol(semanticModel));
break;
case AllowThisNonLocalizedLiteralAttributeName:
_exemptStrings.Add(exemptionAttribute.Literal, DefaultAttributes);
break;
}
}
if (decoratedSyntax == null &&
attributeName.Contains("AssemblyMetadata") &&
attribute.ConstructorArguments[0].Value.ToString() == "Localize.Constant")
{
_exemptStrings.Add(attribute.ConstructorArguments[1].Value.ToString(), DefaultAttributes);
}
}
}
public static string GetTargetFromAttribute(ExemptionAttribute exemptionAttribute)
{
return(GetTargetFromAttributeOrSymbol <ISymbol>(exemptionAttribute, null));
}
private void AddInvocationExemption(ExemptionAttribute exemptionAttribute, ISymbol decoratedSymbol)
{
string target;
AttributeCollection attributes = DefaultAttributes;
switch (exemptionAttribute.Scope)
{
case ExemptionScope.Class:
case ExemptionScope.BaseClass:
// Exempts any literal being passed to a member of this class or a class that derives from the base
if (decoratedSymbol != null)
{
// Must be decorating a named type
target = ExemptionAttribute.GetTargetFromAttributeOrSymbol <INamedTypeSymbol>(exemptionAttribute, decoratedSymbol);
_exemptTypes.Add(target, DefaultAttributes);
}
else
{
// Must be an assembly attribute
target = ExemptionAttribute.GetTargetFromAttribute(exemptionAttribute);
_exemptTypes.Add(target, DefaultAttributes);
}
break;
case ExemptionScope.Method:
// Exempts any literal being passed to the specified method and optionally, parameter(s)
// Note: this can only occur as an assembly attribute
var targetParts = ExemptionAttribute.GetTargetFromAttribute(exemptionAttribute)
.Split("|".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
target = targetParts[0];
if (targetParts.Length > 1)
{
attributes.Add(Parameter, string.Join("|", targetParts.Skip(1)));
}
_exemptMembers.Add(target, attributes);
break;
case ExemptionScope.Parameter:
// Exempts the specified parameter of the associated method
// Note: cannot occur as an assembly attribute
if (decoratedSymbol != null)
{
target = ExemptionAttribute.GetTargetFromAttribute(exemptionAttribute);
attributes.Add(Parameter, target);
_exemptMembers.Add(decoratedSymbol.GetFullName(), attributes);
}
break;
case ExemptionScope.Unknown:
if (decoratedSymbol != null)
{
// Exempts literals being assigned to the decorated field, property, or indexer and exempts literals being used
// in the invocation of the decorated method or method within the decorated type
var decoratedSymbolName = decoratedSymbol.GetFullName();
if (decoratedSymbol is IFieldSymbol)
{
_exemptFields.Add(decoratedSymbolName, DefaultAttributes);
}
else if (decoratedSymbol is IPropertySymbol || decoratedSymbol is IMethodSymbol)
{
if (!string.IsNullOrEmpty(exemptionAttribute.Target))
{
attributes.Add(Parameter, exemptionAttribute.Target);
}
_exemptMembers.Add(decoratedSymbolName, attributes);
}
else if (decoratedSymbol is ITypeSymbol)
{
_exemptTypes.Add(decoratedSymbolName, DefaultAttributes);
}
}
break;
}
}
private void AddScopeExemption(ExemptionAttribute exemptionAttribute, ISymbol decoratedSymbol)
{
string target;
switch (exemptionAttribute.Scope)
{
case ExemptionScope.File:
target = ExemptionAttribute.GetTargetFromAttribute(exemptionAttribute);
if (!Path.IsPathRooted(target))
{
target = string.Concat("*", target);
}
_exemptFilenames.Add(target);
break;
case ExemptionScope.Namespace:
target = ExemptionAttribute.GetTargetFromAttributeOrSymbol <INamespaceSymbol>(exemptionAttribute, decoratedSymbol);
if (!target.EndsWith("*", StringComparison.Ordinal))
{
target = string.Concat(target, "*");
}
_exemptNamespaces.Add(target);
break;
case ExemptionScope.Class:
target = ExemptionAttribute.GetTargetFromAttributeOrSymbol <INamedTypeSymbol>(exemptionAttribute, decoratedSymbol);
_exemptTypeScopes.Add(target);
break;
case ExemptionScope.Constant:
target = ExemptionAttribute.GetTargetFromAttribute(exemptionAttribute);
_exemptStrings.Add(target, DefaultAttributes);
break;
case ExemptionScope.Disabled:
case ExemptionScope.Unknown:
if (decoratedSymbol == null)
{
_exemptAssemblies.Add(_compilation.AssemblyName);
}
else
{
var decoratedSymbolName = decoratedSymbol.GetFullName();
if (decoratedSymbol is IFieldSymbol)
{
_exemptFieldScopes.Add(decoratedSymbolName);
}
else if (decoratedSymbol is IPropertySymbol || decoratedSymbol is IMethodSymbol)
{
_exemptMemberScopes.Add(decoratedSymbolName);
}
else if (decoratedSymbol is ITypeSymbol)
{
_exemptTypeScopes.Add(decoratedSymbolName);
}
}
break;
}
}
