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Diffstat (limited to 'Source/JavaScriptCore/qt/api/qscriptconverter_p.h')
| -rw-r--r-- | Source/JavaScriptCore/qt/api/qscriptconverter_p.h | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/qt/api/qscriptconverter_p.h b/Source/JavaScriptCore/qt/api/qscriptconverter_p.h new file mode 100644 index 0000000..0c57d95 --- /dev/null +++ b/Source/JavaScriptCore/qt/api/qscriptconverter_p.h @@ -0,0 +1,146 @@ +/* + Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies) + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. +*/ + +#ifndef qscriptconverter_p_h +#define qscriptconverter_p_h + +#include "qscriptvalue.h" +#include <JavaScriptCore/JavaScript.h> +#include <QtCore/qglobal.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 + \class QScriptConverter + QScriptValue and QScriptEngine helper class. This class's responsibility is to convert values + between JS values and Qt/C++ values. + + This is a nice way to inline these functions in both QScriptValue and QScriptEngine. +*/ +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)); + } + static JSStringRef toString(const QString& str) + { + return JSStringCreateWithUTF8CString(str.toUtf8().constData()); + } + static JSStringRef toString(const char* str) + { + 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()); + } + + static JSPropertyAttributes toPropertyFlags(const QFlags<QScriptValue::PropertyFlag>& flags) + { + JSPropertyAttributes attr = 0; + if (flags.testFlag(QScriptValue::ReadOnly)) + attr |= kJSPropertyAttributeReadOnly; + if (flags.testFlag(QScriptValue::Undeletable)) + attr |= kJSPropertyAttributeDontDelete; + if (flags.testFlag(QScriptValue::SkipInEnumeration)) + attr |= kJSPropertyAttributeDontEnum; + return attr; + } +}; + +#endif // qscriptconverter_p_h |