`-Wdeprecated-literal-operator` identifies minor syntax updates

[mtmorgan]

Describe the bug

From https://gcc.gnu.org/onlinedocs/gcc/C_002b_002b-Dialect-Options.html#index-Wdeprecated-literal-operator, the four occurrences of operator "" _json(...) and similar at

jsoncons/include/jsoncons/basic_json.hpp

Lines 4717 to 4738 in 68fafa1

	jsoncons::json operator "" _json(const char* s, std::size_t n)
	{
	return jsoncons::json::parse(jsoncons::json::string_view_type(s, n));
	}
	inline
	jsoncons::wjson operator "" _json(const wchar_t* s, std::size_t n)
	{
	return jsoncons::wjson::parse(jsoncons::wjson::string_view_type(s, n));
	}
	inline
	jsoncons::ojson operator "" _ojson(const char* s, std::size_t n)
	{
	return jsoncons::ojson::parse(jsoncons::ojson::string_view_type(s, n));
	}
	inline
	jsoncons::wojson operator "" _ojson(const wchar_t* s, std::size_t n)
	{
	return jsoncons::wojson::parse(jsoncons::wojson::string_view_type(s, n));
	}

should be replaced with operator""_json(...).

With clang version 20.1.0-rc3, an example warning is

include/jsoncons/basic_json.hpp:6452:33: warning: identifier '_json' preceded by whitespace in a literal operator declaration is deprecated [-Wdeprecated-literal-operator]
 6452 |     jsoncons::wjson operator "" _json(const wchar_t* s, std::size_t n)
      |                     ~~~~~~~~~~~~^~~~~
      |                     operator""_json

What jsoncons library version?

• Latest release 1.3.0
• Other release ______
• master

[danielaparker]

Fixed in 1.3.1