private static void GetTupleElementNamesLocalInfo(
byte[] customDebugInfo,
out ImmutableDictionary <int, ImmutableArray <string> > tupleLocalMap,
out ImmutableDictionary <LocalNameAndScope, ImmutableArray <string> > tupleLocalConstantMap)
{
tupleLocalMap = null;
tupleLocalConstantMap = null;
var record = CustomDebugInfoReader.TryGetCustomDebugInfoRecord(customDebugInfo, CustomDebugInfoKind.TupleElementNames);
if (record.IsDefault)
{
return;
}
ImmutableDictionary <int, ImmutableArray <string> > .Builder localBuilder = null;
ImmutableDictionary <LocalNameAndScope, ImmutableArray <string> > .Builder constantBuilder = null;
var tuples = CustomDebugInfoReader.DecodeTupleElementNamesRecord(record);
foreach (var tuple in tuples)
{
var slotIndex = tuple.SlotIndex;
var elementNames = tuple.ElementNames;
if (slotIndex < 0)
{
constantBuilder = constantBuilder ?? ImmutableDictionary.CreateBuilder <LocalNameAndScope, ImmutableArray <string> >();
var localAndScope = new LocalNameAndScope(tuple.LocalName, tuple.ScopeStart, tuple.ScopeEnd);
constantBuilder[localAndScope] = elementNames;
}
else
{
localBuilder = localBuilder ?? ImmutableDictionary.CreateBuilder <int, ImmutableArray <string> >();
localBuilder[slotIndex] = elementNames;
}
}
if (localBuilder != null)
{
tupleLocalMap = localBuilder.ToImmutable();
}
if (constantBuilder != null)
{
tupleLocalConstantMap = constantBuilder.ToImmutable();
}
}