Double and BigDecimal test value added and solution

[Ikiselev7]

In some cases we found the problem. If we try to parse Double from json like 0.12345678912345678 parser return BigDecimal value, and matchers return assertion failure, but this number can be parse to Double. Spring test use your library and we found that problem there. I was add test value to TestFloat class and write some solution in JSONParserBase extractFloat method for that case. I think the solution isn't good, but now I don't know how I can fix it better.

[UrielCh]

like that that will rune performances ...
it's obvious that a number with 50 number will be a big decimal.

[hezhangjian]

There is a problem here, it just compare the string equlas, but ignore the case of e E e+ E+

[UrielCh]

I have just add the following test:

	public void testPrecisionFloat() throws Exception {
		JSONParser p = new JSONParser(JSONParser.MODE_PERMISSIVE);
		for (int len = 15; len < 25; len++) {
			StringBuilder sb = new StringBuilder("0.");
			for (int i = 0; i < len; i++) {
				sb.append("123456789".charAt(i % 9));
			}
			String s = sb.toString();
			String json = "{v:" + s + "}";
			JSONObject obj = (JSONObject) p.parse(json);
			Object value = obj.get("v").toString();
			assertEquals("Should not loose precision on a " + len + " digits long", s, value);
		}
	}

and it pass...

[UrielCh]

use a custom flag and do not select USE_HI_PRECISION_FLOAT

for example
MODE_RFC4627 = USE_INTEGER_STORAGE | USE_HI_PRECISION_FLOAT | ACCEPT_TAILLING_SPACE;

user

MODE_MY = USE_INTEGER_STORAGE | ACCEPT_TAILLING_SPACE;

[UrielCh]

After some reflection, I have added the flag:
BIG_DIGIT_UNRESTRICTED, to deal with your issue.

[UrielCh]

fixed by adding BIG_DIGIT_UNRESTRICTED flag.