Sarcasm.Unparsing.FormatYielder.YieldBefore C# (CSharp) Méthode

        internal IEnumerable<UtokenBase> YieldBefore(UnparsableAst self, out Params @params)
        {
            /*
             * To achieve fully execution before UnparseRawMiddle, this method is not an iterator block rather populates a list.
             * Returning IReadOnlyList instead of IEnumerable is just an explicit guarantee to the caller to ensure that
             * the returned utokens does not need to be iterated through e.g. by converting it to a list in order to achieve full execution.
             * */

            Unparser.tsUnparse.Debug("YieldBefore");

            UpdateCacheOnTheFly(self, State.Before);

            var utokens = new List<UtokenBase>();
            BlockIndentation blockIndentation = BlockIndentation.ToBeSet;

            if (direction == Unparser.Direction.LeftToRight)
            {
                utokens.AddRange(YieldBetween(self));
                utokens.AddRange(YieldIndentationLeft(self, ref blockIndentation));
            }
            else
            {
                utokens.AddRange(YieldIndentationRight(self, ref blockIndentation));
            }

            InsertedUtokens leftInsertedUtokens;
            InsertedUtokens rightInsertedUtokens;

            _GetUtokensAround(self, out leftInsertedUtokens, out rightInsertedUtokens);

            InsertedUtokens insertedUtokensBefore;
            InsertedUtokens insertedUtokensAfter;

            if (direction == Unparser.Direction.LeftToRight)
            {
                insertedUtokensBefore = leftInsertedUtokens;
                insertedUtokensAfter = rightInsertedUtokens;
            }
            else
            {
                insertedUtokensBefore = rightInsertedUtokens;
                insertedUtokensAfter = leftInsertedUtokens;
            }

            if (insertedUtokensBefore != InsertedUtokens.None)
            {
                Unparser.tsUnparse.Debug("inserted utokens: {0}", insertedUtokensBefore);
                utokens.Add(insertedUtokensBefore);
            }

            @params = new Params(blockIndentation, insertedUtokensAfter);

            return utokens;
        }