[Issue 16432] New: JSON incorrectly parses to string

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16432

          Issue ID: 16432
           Summary: JSON incorrectly parses to string
           Product: D
           Version: D2
          Hardware: x86
                OS: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: sascha.orlov at gmail.com

Trying to copy a JSONValue via .toString.parseJSON, see 
https://forum.dlang.org/thread/tsmllrkvdkuskroxcpcc@forum.dlang.org
found an error during conversion to string: 

If a value is a floating type, which ends with a .0 during conversion to
string, the part after the point is cut away and the value is interpreted as an
integer afterwards. 

void main()
{
    import std.json; 
    import std.stdio; 

    string s = "{\"rating\": 3.0 }";
    JSONValue j = parseJSON(s);

    assert(j["rating"].type == JSON_TYPE.FLOAT); 

    writeln(j.toString); 

    j = j.toString.parseJSON; 

    assert(j["rating"].type != JSON_TYPE.FLOAT); 
    assert(j["rating"].type == JSON_TYPE.INTEGER); 
}

If the value is like "3.1" the bug doesn't appear.

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