diff options
| author | Marius Kittler <mariuskittler@gmx.de> | 2017-02-27 22:16:41 +0100 |
|---|---|---|
| committer | Marius Kittler <mariuskittler@gmx.de> | 2017-03-25 14:26:30 +0000 |
| commit | 38550c562d918e783bb609622bc8fb46de1bfec4 (patch) | |
| tree | 63ba6dffba7ff7e2ec3713142687fe84a54018fa /src | |
| parent | 5ca7d56aca5d7cae3f6eefad181839f9b3a2ece6 (diff) | |
json encoder: Harmonize number serialization with ES6
Ensures that numbers representable as 64-bit integer
are not printed using exponent notation.
Some JSON implementations such as the one of the Go
standard library expect this in the default
conversion to int.
Change-Id: Ic3ac718b7fd36462b4fcabbfb100a528a87798c8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/corelib/json/qjsonwriter.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/corelib/json/qjsonwriter.cpp b/src/corelib/json/qjsonwriter.cpp index b1544c749d..12ce20ef09 100644 --- a/src/corelib/json/qjsonwriter.cpp +++ b/src/corelib/json/qjsonwriter.cpp @@ -38,6 +38,7 @@ ** ****************************************************************************/ +#include <cmath> #include <qlocale.h> #include "qjsonwriter_p.h" #include "qjson_p.h" @@ -129,10 +130,12 @@ static void valueToJson(const QJsonPrivate::Base *b, const QJsonPrivate::Value & break; case QJsonValue::Double: { const double d = v.toDouble(b); - if (qIsFinite(d)) // +2 to format to ensure the expected precision - json += QByteArray::number(d, 'g', QLocale::FloatingPointShortest); - else + if (qIsFinite(d)) { // +2 to format to ensure the expected precision + const double abs = std::abs(d); + json += QByteArray::number(d, abs == static_cast<quint64>(abs) ? 'f' : 'g', QLocale::FloatingPointShortest); + } else { json += "null"; // +INF || -INF || NaN (see RFC4627#section2.4) + } break; } case QJsonValue::String: |