diff options
Diffstat (limited to 'src/corelib/json')
-rw-r--r-- | src/corelib/json/qjson_p.h | 2 | ||||
-rw-r--r-- | src/corelib/json/qjsonvalue.cpp | 12 | ||||
-rw-r--r-- | src/corelib/json/qjsonvalue.h | 1 | ||||
-rw-r--r-- | src/corelib/json/qjsonwriter.cpp | 9 |
4 files changed, 22 insertions, 2 deletions
diff --git a/src/corelib/json/qjson_p.h b/src/corelib/json/qjson_p.h index 06885ad972..7d0162938d 100644 --- a/src/corelib/json/qjson_p.h +++ b/src/corelib/json/qjson_p.h @@ -60,8 +60,10 @@ #include <qatomic.h> #include <qstring.h> #include <qendian.h> +#include <qnumeric.h> #include <limits.h> +#include <limits> QT_BEGIN_NAMESPACE diff --git a/src/corelib/json/qjsonvalue.cpp b/src/corelib/json/qjsonvalue.cpp index 3fbc811948..3aba6124b8 100644 --- a/src/corelib/json/qjsonvalue.cpp +++ b/src/corelib/json/qjsonvalue.cpp @@ -156,6 +156,18 @@ QJsonValue::QJsonValue(int n) } /*! + \overload + Creates a value of type Double, with value \a n. + NOTE: the integer limits for IEEE 754 double precision data is 2^53 (-9007199254740992 to +9007199254740992). + If you pass in values outside this range expect a loss of precision to occur. + */ +QJsonValue::QJsonValue(qint64 n) + : d(0), t(Double) +{ + this->dbl = n; +} + +/*! Creates a value of type String, with value \a s. */ QJsonValue::QJsonValue(const QString &s) diff --git a/src/corelib/json/qjsonvalue.h b/src/corelib/json/qjsonvalue.h index b8bdf55aa3..c8efab5d5f 100644 --- a/src/corelib/json/qjsonvalue.h +++ b/src/corelib/json/qjsonvalue.h @@ -79,6 +79,7 @@ public: QJsonValue(bool b); QJsonValue(double n); QJsonValue(int n); + QJsonValue(qint64 n); QJsonValue(const QString &s); QJsonValue(QLatin1String s); QJsonValue(const QJsonArray &a); diff --git a/src/corelib/json/qjsonwriter.cpp b/src/corelib/json/qjsonwriter.cpp index 3ac16c6fd1..8426b351f6 100644 --- a/src/corelib/json/qjsonwriter.cpp +++ b/src/corelib/json/qjsonwriter.cpp @@ -169,9 +169,14 @@ static void valueToJson(const QJsonPrivate::Base *b, const QJsonPrivate::Value & case QJsonValue::Bool: json += v.toBoolean() ? "true" : "false"; break; - case QJsonValue::Double: - json += QByteArray::number(v.toDouble(b), 'g', 17); + 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', std::numeric_limits<double>::digits10 + 2); // ::digits10 is 15 + else + json += "null"; // +INF || -INF || NaN (see RFC4627#section2.4) break; + } case QJsonValue::String: json += '"'; json += escapedString(v.toString(b)); |