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

        private void FetchKey()
        {
            // In the block context, additional checks are required.

            if (flowLevel == 0)
            {
                // Check if we are allowed to start a new key (not nessesary simple).

                if (!simpleKeyAllowed)
                {
                    var mark = cursor.Mark();
                    throw new SyntaxErrorException(mark, mark, "Mapping keys are not allowed in this context.");
                }

                // Add the BLOCK-MAPPING-START token if needed.

                RollIndent(cursor.LineOffset, -1, false, cursor.Mark());
            }

            // Reset any potential simple keys on the current flow level.

            RemoveSimpleKey();

            // Simple keys are allowed after '?' in the block context.

            simpleKeyAllowed = flowLevel == 0;

            // Consume the token.

            var start = cursor.Mark();
            Skip();

            // Create the KEY token and append it to the queue.

            tokens.Enqueue(new Key(start, cursor.Mark()));
        }