diff options
Diffstat (limited to 'tools/qmlcachegen')
-rw-r--r-- | tools/qmlcachegen/generateloader.cpp | 54 |
1 files changed, 48 insertions, 6 deletions
diff --git a/tools/qmlcachegen/generateloader.cpp b/tools/qmlcachegen/generateloader.cpp index 96528a9477..178a109791 100644 --- a/tools/qmlcachegen/generateloader.cpp +++ b/tools/qmlcachegen/generateloader.cpp @@ -35,6 +35,52 @@ #include <QFileInfo> #include <QSaveFile> +/*! + * \internal + * Mangles \a str to be a unique C++ identifier. Characters that are invalid for C++ identifiers + * are replaced by the pattern \c _0x<hex>_ where <hex> is the hexadecimal unicode + * representation of the character. As identifiers with leading underscores followed by either + * another underscore or a capital letter are reserved in C++, we also escape those, by escaping + * the first underscore, using the above method. + * + * \note + * Although C++11 allows for non-ascii (unicode) characters to be used in identifiers, + * many compilers forgot to read the spec and do not implement this. Some also do not + * implement C99 identifiers, because that is \e {at the implementation's discretion}. So, + * we are stuck with plain old boring identifiers. + */ +QString mangledIdentifier(const QString &str) +{ + Q_ASSERT(!str.isEmpty()); + + QString mangled; + mangled.reserve(str.size()); + + int i = 0; + if (str.startsWith(QLatin1Char('_')) && str.size() > 1) { + QChar ch = str.at(1); + if (ch == QLatin1Char('_') + || (ch >= QLatin1Char('A') && ch <= QLatin1Char('Z'))) { + mangled += QLatin1String("_0x5f_"); + ++i; + } + } + + for (int ei = str.length(); i != ei; ++i) { + auto c = str.at(i).unicode(); + if ((c >= QLatin1Char('0') && c <= QLatin1Char('9')) + || (c >= QLatin1Char('a') && c <= QLatin1Char('z')) + || (c >= QLatin1Char('A') && c <= QLatin1Char('Z')) + || c == QLatin1Char('_')) { + mangled += c; + } else { + mangled += QLatin1String("_0x") + QString::number(c, 16) + QLatin1Char('_'); + } + } + + return mangled; +} + QString symbolNamespaceForPath(const QString &relativePath) { QFileInfo fi(relativePath); @@ -47,12 +93,8 @@ QString symbolNamespaceForPath(const QString &relativePath) } symbol += fi.baseName(); symbol += QLatin1Char('_'); - symbol += fi.suffix(); - symbol.replace(QLatin1Char('.'), QLatin1Char('_')); - symbol.replace(QLatin1Char('+'), QLatin1Char('_')); - symbol.replace(QLatin1Char('-'), QLatin1Char('_')); - symbol.replace(QLatin1Char(' '), QLatin1Char('_')); - return symbol; + symbol += fi.completeSuffix(); + return mangledIdentifier(symbol); } struct VirtualDirectoryEntry |