diff options
Diffstat (limited to 'JavaScriptCore/qt/api/qscriptconverter_p.h')
| -rw-r--r-- | JavaScriptCore/qt/api/qscriptconverter_p.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/JavaScriptCore/qt/api/qscriptconverter_p.h b/JavaScriptCore/qt/api/qscriptconverter_p.h index c3ca41f..cd86e20 100644 --- a/JavaScriptCore/qt/api/qscriptconverter_p.h +++ b/JavaScriptCore/qt/api/qscriptconverter_p.h @@ -21,7 +21,11 @@ #define qscriptconverter_p_h #include <JavaScriptCore/JavaScript.h> +#include <QtCore/qnumeric.h> #include <QtCore/qstring.h> +#include <QtCore/qvarlengtharray.h> + +extern char *qdtoa(double d, int mode, int ndigits, int *decpt, int *sign, char **rve, char **digits_str); /* \internal @@ -33,6 +37,19 @@ */ class QScriptConverter { public: + static quint32 toArrayIndex(const JSStringRef jsstring) + { + // FIXME this function should be exported by JSC C API. + QString qstring = toString(jsstring); + + bool ok; + quint32 idx = qstring.toUInt(&ok); + if (!ok || toString(idx) != qstring) + idx = 0xffffffff; + + return idx; + } + static QString toString(const JSStringRef str) { return QString(reinterpret_cast<const QChar*>(JSStringGetCharactersPtr(str)), JSStringGetLength(str)); @@ -45,6 +62,71 @@ public: { return JSStringCreateWithUTF8CString(str); } + static QString toString(double value) + { + // FIXME this should be easier. The ideal fix is to create + // a new function in JSC C API which could cover the functionality. + + if (qIsNaN(value)) + return QString::fromLatin1("NaN"); + if (qIsInf(value)) + return QString::fromLatin1(value < 0 ? "-Infinity" : "Infinity"); + if (!value) + return QString::fromLatin1("0"); + + QVarLengthArray<char, 25> buf; + int decpt; + int sign; + char* result = 0; + char* endresult; + (void)qdtoa(value, 0, 0, &decpt, &sign, &endresult, &result); + + if (!result) + return QString(); + + int resultLen = endresult - result; + if (decpt <= 0 && decpt > -6) { + buf.resize(-decpt + 2 + sign); + qMemSet(buf.data(), '0', -decpt + 2 + sign); + if (sign) // fix the sign. + buf[0] = '-'; + buf[sign + 1] = '.'; + buf.append(result, resultLen); + } else { + if (sign) + buf.append('-'); + int length = buf.size() - sign + resultLen; + if (decpt <= 21 && decpt > 0) { + if (length <= decpt) { + const char* zeros = "0000000000000000000000000"; + buf.append(result, resultLen); + buf.append(zeros, decpt - length); + } else { + buf.append(result, decpt); + buf.append('.'); + buf.append(result + decpt, resultLen - decpt); + } + } else if (result[0] >= '0' && result[0] <= '9') { + if (length > 1) { + buf.append(result, 1); + buf.append('.'); + buf.append(result + 1, resultLen - 1); + } else + buf.append(result, resultLen); + buf.append('e'); + buf.append(decpt >= 0 ? '+' : '-'); + int e = qAbs(decpt - 1); + if (e >= 100) + buf.append('0' + e / 100); + if (e >= 10) + buf.append('0' + (e % 100) / 10); + buf.append('0' + e % 10); + } + } + free(result); + buf.append(0); + return QString::fromLatin1(buf.constData()); + } }; #endif // qscriptconverter_p_h |