YamlDotNet.Core.Scanner.FetchMoreTokens C# (CSharp) Method

        private void FetchMoreTokens()
        {
            // While we need more tokens to fetch, do it.

            while (true)
            {
                // Check if we really need to fetch more tokens.

                bool needsMoreTokens = false;

                if (tokens.Count == 0)
                {
                    // Queue is empty.

                    needsMoreTokens = true;
                }
                else
                {
                    // Check if any potential simple key may occupy the head position.

                    StaleSimpleKeys();

                    foreach (var simpleKey in simpleKeys)
                    {
                        if (simpleKey.IsPossible && simpleKey.TokenNumber == tokensParsed)
                        {
                            needsMoreTokens = true;
                            break;
                        }
                    }
                }

                // We are finished.
                if (!needsMoreTokens)
                {
                    break;
                }

                // Fetch the next token.

                FetchNextToken();
            }
            tokenAvailable = true;
        }