C++ (Cpp) IdCache Examples

Example #1

File: id.cpp Project: KeeganRen/qt-creator

static quintptr theId(const char *str, int n = 0)
{
    static quintptr firstUnusedId = 10 * 1000 * 1000;
    QTC_ASSERT(str && *str, return 0);
    StringHolder sh(str, n);
    int res = idFromString.value(sh, 0);
    if (res == 0) {
        res = firstUnusedId++;
        sh.str = qstrdup(sh.str);
        idFromString[sh] = res;
        stringFromId[res] = sh;
    }
    return res;
}

Example #2

File: id.cpp Project: AltarBeastiful/qt-creator

struct IdCache : public QHash<StringHolder, int>
{
#ifndef QTC_ALLOW_STATIC_LEAKS
    ~IdCache()
    {
        for (IdCache::iterator it = begin(); it != end(); ++it)
            delete[](const_cast<char *>(it.key().str));
    }
#endif
};


static int firstUnusedId = Id::IdsPerPlugin * Id::ReservedPlugins;

static QHash<int, StringHolder> stringFromId;
static IdCache idFromString;

static int theId(const char *str, int n = 0)
{
    QTC_ASSERT(str && *str, return 0);
    StringHolder sh(str, n);
    int res = idFromString.value(sh, 0);
    if (res == 0) {
        res = firstUnusedId++;
        sh.str = qstrdup(sh.str);
        idFromString[sh] = res;
        stringFromId[res] = sh;
    }
    return res;
}