Method parse_inline_table

src/toml.hpp:15754–15837

	}

	TOML_EXTERNAL_LINKAGE
	node_ptr parser::parse_inline_table()
	{
		return_if_error({});
		assert_not_eof();
		TOML_ASSERT_ASSUME(*cp == U'{');
		push_parse_scope("inline table"sv);

		// skip opening '{'
		advance_and_return_if_error_or_eof({});

		node_ptr tbl_ptr{ new table{} };
		table& tbl = tbl_ptr->ref_cast<table>();
		tbl.is_inline(true);
		table_vector_scope table_scope{ open_inline_tables, tbl };

		enum class TOML_CLOSED_ENUM parse_type : int
		{
			none,
			comma,
			kvp
		};
		parse_type prev = parse_type::none;
		while (!is_error())
		{
			if constexpr (TOML_LANG_UNRELEASED) // toml/issues/516 (newlines/trailing commas in inline tables)
			{
				while (consume_leading_whitespace() || consume_line_break() || consume_comment())
					continue;
			}
			else
			{
				while (consume_leading_whitespace())
					continue;
			}
			return_if_error({});
			set_error_and_return_if_eof({});

			// commas - only legal after a key-value pair
			if (*cp == U',')
			{
				if (prev == parse_type::kvp)
				{
					prev = parse_type::comma;
					advance_and_return_if_error_or_eof({});
				}
				else
					set_error_and_return_default("expected key-value pair or closing '}', saw comma"sv);
			}

			// closing '}'
			else if (*cp == U'}')
			{
				if constexpr (!TOML_LANG_UNRELEASED) // toml/issues/516 (newlines/trailing commas in inline tables)
				{
					if (prev == parse_type::comma)
					{
						set_error_and_return_default("expected key-value pair, saw closing '}' (dangling comma)"sv);