Ejemplo n.º 1
0
PyObject *
PyMember_GetOne(const char *addr, PyMemberDef *l)
{
    PyObject *v;
    if ((l->flags & READ_RESTRICTED) &&
        PyEval_GetRestricted()) {
        PyErr_SetString(PyExc_RuntimeError, "restricted attribute");
        return NULL;
    }
    addr += l->offset;
    switch (l->type) {
    case T_BOOL:
        v = PyBool_FromLong(*(char*)addr);
        break;
    case T_BYTE:
        v = PyInt_FromLong(*(char*)addr);
        break;
    case T_UBYTE:
        v = PyLong_FromUnsignedLong(*(unsigned char*)addr);
        break;
    case T_SHORT:
        v = PyInt_FromLong(*(short*)addr);
        break;
    case T_USHORT:
        v = PyLong_FromUnsignedLong(*(unsigned short*)addr);
        break;
    case T_INT:
        v = PyInt_FromLong(*(int*)addr);
        break;
    case T_UINT:
        v = PyLong_FromUnsignedLong(*(unsigned int*)addr);
        break;
    case T_LONG:
        v = PyInt_FromLong(*(long*)addr);
        break;
    case T_ULONG:
        v = PyLong_FromUnsignedLong(*(unsigned long*)addr);
        break;
    case T_PYSSIZET:
        v = PyInt_FromSsize_t(*(Py_ssize_t*)addr);
        break;
    case T_FLOAT:
        v = PyFloat_FromDouble((double)*(float*)addr);
        break;
    case T_DOUBLE:
        v = PyFloat_FromDouble(*(double*)addr);
        break;
    case T_STRING:
        if (*(char**)addr == NULL) {
            Py_INCREF(Py_None);
            v = Py_None;
        }
        else
            v = PyString_FromString(*(char**)addr);
        break;
    case T_STRING_INPLACE:
        v = PyString_FromString((char*)addr);
        break;
    case T_CHAR:
        v = PyString_FromStringAndSize((char*)addr, 1);
        break;
    case T_OBJECT:
        v = *(PyObject **)addr;
        if (v == NULL)
            v = Py_None;
        Py_INCREF(v);
        break;
    case T_OBJECT_EX:
        v = *(PyObject **)addr;
        if (v == NULL)
            PyErr_SetString(PyExc_AttributeError, l->name);
        Py_XINCREF(v);
        break;
#ifdef HAVE_LONG_LONG
    case T_LONGLONG:
        v = PyLong_FromLongLong(*(PY_LONG_LONG *)addr);
        break;
    case T_ULONGLONG:
        v = PyLong_FromUnsignedLongLong(*(unsigned PY_LONG_LONG *)addr);
        break;
#endif /* HAVE_LONG_LONG */
    default:
        PyErr_SetString(PyExc_SystemError, "bad memberdescr type");
        v = NULL;
    }
    return v;
}
Ejemplo n.º 2
0
EXPORT ICUException::ICUException(const ICUException &e)
    : code(e.code), msg(e.msg)
{
    Py_XINCREF(code);
    Py_XINCREF(msg);
}
Ejemplo n.º 3
0
static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb,
                        CYTHON_UNUSED PyObject *cause) {
    /* cause is unused */
    Py_XINCREF(type);
    Py_XINCREF(value);
    Py_XINCREF(tb);
    /* First, check the traceback argument, replacing None with NULL. */
    if (tb == Py_None) {
        Py_DECREF(tb);
        tb = 0;
    }
    else if (tb != NULL && !PyTraceBack_Check(tb)) {
        PyErr_SetString(PyExc_TypeError,
            "raise: arg 3 must be a traceback or None");
        goto raise_error;
    }
    /* Next, replace a missing value with None */
    if (value == NULL) {
        value = Py_None;
        Py_INCREF(value);
    }
    #if PY_VERSION_HEX < 0x02050000
    if (!PyClass_Check(type))
    #else
    if (!PyType_Check(type))
    #endif
    {
        /* Raising an instance.  The value should be a dummy. */
        if (value != Py_None) {
            PyErr_SetString(PyExc_TypeError,
                "instance exception may not have a separate value");
            goto raise_error;
        }
        /* Normalize to raise <class>, <instance> */
        Py_DECREF(value);
        value = type;
        #if PY_VERSION_HEX < 0x02050000
            if (PyInstance_Check(type)) {
                type = (PyObject*) ((PyInstanceObject*)type)->in_class;
                Py_INCREF(type);
            }
            else {
                type = 0;
                PyErr_SetString(PyExc_TypeError,
                    "raise: exception must be an old-style class or instance");
                goto raise_error;
            }
        #else
            type = (PyObject*) Py_TYPE(type);
            Py_INCREF(type);
            if (!PyType_IsSubtype((PyTypeObject *)type, (PyTypeObject *)PyExc_BaseException)) {
                PyErr_SetString(PyExc_TypeError,
                    "raise: exception class must be a subclass of BaseException");
                goto raise_error;
            }
        #endif
    }

    __Pyx_ErrRestore(type, value, tb);
    return;
raise_error:
    Py_XDECREF(value);
    Py_XDECREF(type);
    Py_XDECREF(tb);
    return;
}
Ejemplo n.º 4
0
int
PyMember_SetOne(char *addr, PyMemberDef *l, PyObject *v)
{
    PyObject *oldv;

    addr += l->offset;

    if ((l->flags & READONLY))
    {
        PyErr_SetString(PyExc_TypeError, "readonly attribute");
        return -1;
    }
    if ((l->flags & PY_WRITE_RESTRICTED) && PyEval_GetRestricted()) {
        PyErr_SetString(PyExc_RuntimeError, "restricted attribute");
        return -1;
    }
    if (v == NULL) {
        if (l->type == T_OBJECT_EX) {
            /* Check if the attribute is set. */
            if (*(PyObject **)addr == NULL) {
                PyErr_SetString(PyExc_AttributeError, l->name);
                return -1;
            }
        }
        else if (l->type != T_OBJECT) {
            PyErr_SetString(PyExc_TypeError,
                            "can't delete numeric/char attribute");
            return -1;
        }
    }
    switch (l->type) {
    case T_BOOL:{
        if (!PyBool_Check(v)) {
            PyErr_SetString(PyExc_TypeError,
                            "attribute value type must be bool");
            return -1;
        }
        if (v == Py_True)
            *(char*)addr = (char) 1;
        else
            *(char*)addr = (char) 0;
        break;
        }
    case T_BYTE:{
        long long_val = PyInt_AsLong(v);
        if ((long_val == -1) && PyErr_Occurred())
            return -1;
        *(char*)addr = (char)long_val;
        /* XXX: For compatibility, only warn about truncations
           for now. */
        if ((long_val > CHAR_MAX) || (long_val < CHAR_MIN))
            WARN("Truncation of value to char");
        break;
        }
    case T_UBYTE:{
        long long_val = PyInt_AsLong(v);
        if ((long_val == -1) && PyErr_Occurred())
            return -1;
        *(unsigned char*)addr = (unsigned char)long_val;
        if ((long_val > UCHAR_MAX) || (long_val < 0))
            WARN("Truncation of value to unsigned char");
        break;
        }
    case T_SHORT:{
        long long_val = PyInt_AsLong(v);
        if ((long_val == -1) && PyErr_Occurred())
            return -1;
        *(short*)addr = (short)long_val;
        if ((long_val > SHRT_MAX) || (long_val < SHRT_MIN))
            WARN("Truncation of value to short");
        break;
        }
    case T_USHORT:{
        long long_val = PyInt_AsLong(v);
        if ((long_val == -1) && PyErr_Occurred())
            return -1;
        *(unsigned short*)addr = (unsigned short)long_val;
        if ((long_val > USHRT_MAX) || (long_val < 0))
            WARN("Truncation of value to unsigned short");
        break;
        }
    case T_INT:{
        long long_val = PyInt_AsLong(v);
        if ((long_val == -1) && PyErr_Occurred())
            return -1;
        *(int *)addr = (int)long_val;
        if ((long_val > INT_MAX) || (long_val < INT_MIN))
            WARN("Truncation of value to int");
        break;
        }
    case T_UINT:{
        unsigned long ulong_val = PyLong_AsUnsignedLong(v);
        if ((ulong_val == (unsigned long)-1) && PyErr_Occurred()) {
            /* XXX: For compatibility, accept negative int values
               as well. */
            PyErr_Clear();
            ulong_val = PyLong_AsLong(v);
            if ((ulong_val == (unsigned long)-1) &&
                PyErr_Occurred())
                return -1;
            *(unsigned int *)addr = (unsigned int)ulong_val;
            WARN("Writing negative value into unsigned field");
        } else
            *(unsigned int *)addr = (unsigned int)ulong_val;
        if (ulong_val > UINT_MAX)
            WARN("Truncation of value to unsigned int");
        break;
        }
    case T_LONG:{
        *(long*)addr = PyLong_AsLong(v);
        if ((*(long*)addr == -1) && PyErr_Occurred())
            return -1;
        break;
        }
    case T_ULONG:{
        *(unsigned long*)addr = PyLong_AsUnsignedLong(v);
        if ((*(unsigned long*)addr == (unsigned long)-1)
            && PyErr_Occurred()) {
            /* XXX: For compatibility, accept negative int values
               as well. */
            PyErr_Clear();
            *(unsigned long*)addr = PyLong_AsLong(v);
            if ((*(unsigned long*)addr == (unsigned long)-1)
                && PyErr_Occurred())
                return -1;
            WARN("Writing negative value into unsigned field");
        }
        break;
        }
    case T_PYSSIZET:{
        *(Py_ssize_t*)addr = PyInt_AsSsize_t(v);
        if ((*(Py_ssize_t*)addr == (Py_ssize_t)-1)
            && PyErr_Occurred())
                        return -1;
        break;
        }
    case T_FLOAT:{
        double double_val = PyFloat_AsDouble(v);
        if ((double_val == -1) && PyErr_Occurred())
            return -1;
        *(float*)addr = (float)double_val;
        break;
        }
    case T_DOUBLE:
        *(double*)addr = PyFloat_AsDouble(v);
        if ((*(double*)addr == -1) && PyErr_Occurred())
            return -1;
        break;
    case T_OBJECT:
    case T_OBJECT_EX:
        Py_XINCREF(v);
        oldv = *(PyObject **)addr;
        *(PyObject **)addr = v;
        Py_XDECREF(oldv);
        break;
    case T_CHAR:
        if (PyString_Check(v) && PyString_Size(v) == 1) {
            *(char*)addr = PyString_AsString(v)[0];
        }
        else {
            PyErr_BadArgument();
            return -1;
        }
        break;
    case T_STRING:
    case T_STRING_INPLACE:
        PyErr_SetString(PyExc_TypeError, "readonly attribute");
        return -1;
#ifdef HAVE_LONG_LONG
    case T_LONGLONG:{
        PY_LONG_LONG value;
        *(PY_LONG_LONG*)addr = value = PyLong_AsLongLong(v);
        if ((value == -1) && PyErr_Occurred())
            return -1;
        break;
        }
    case T_ULONGLONG:{
        unsigned PY_LONG_LONG value;
        /* ??? PyLong_AsLongLong accepts an int, but PyLong_AsUnsignedLongLong
            doesn't ??? */
        if (PyLong_Check(v))
            *(unsigned PY_LONG_LONG*)addr = value = PyLong_AsUnsignedLongLong(v);
        else
            *(unsigned PY_LONG_LONG*)addr = value = PyInt_AsLong(v);
        if ((value == (unsigned PY_LONG_LONG)-1) && PyErr_Occurred())
            return -1;
        break;
        }
#endif /* HAVE_LONG_LONG */
    default:
        PyErr_Format(PyExc_SystemError,
                     "bad memberdescr type for %s", l->name);
        return -1;
    }
    return 0;
}
Ejemplo n.º 5
0
void
Py_IncRef(PyObject *o)
{
    Py_XINCREF(o);
}
Ejemplo n.º 6
0
static PyObject *Nuitka_Generator_throw( Nuitka_GeneratorObject *generator, PyObject *args )
{
    generator->m_exception_value = NULL;
    generator->m_exception_tb = NULL;

    int res = PyArg_UnpackTuple( args, "throw", 1, 3, &generator->m_exception_type, &generator->m_exception_value, (PyObject **)&generator->m_exception_tb );

    if ( (PyObject *)generator->m_exception_tb == Py_None )
    {
        generator->m_exception_tb = NULL;
    }
    else if ( generator->m_exception_tb != NULL && !PyTraceBack_Check( generator->m_exception_tb ) )
    {
        PyErr_Format( PyExc_TypeError, "throw() third argument must be a traceback object" );
        return NULL;
    }

    if (unlikely( res == 0 ))
    {
        generator->m_exception_type = NULL;
        generator->m_exception_value = NULL;
        generator->m_exception_tb = NULL;

        return NULL;
    }

    Py_INCREF( generator->m_exception_type );
    Py_XINCREF( generator->m_exception_value );
    Py_XINCREF( generator->m_exception_tb );

    if ( PyExceptionClass_Check( generator->m_exception_type ))
    {
        NORMALIZE_EXCEPTION( &generator->m_exception_type, &generator->m_exception_value, &generator->m_exception_tb );
    }
    else if ( PyExceptionInstance_Check( generator->m_exception_type ) )
    {
        if ( generator->m_exception_value && generator->m_exception_value != Py_None )
        {
            PyErr_Format( PyExc_TypeError, "instance exception may not have a separate value" );
            return NULL;
        }

        Py_XDECREF( generator->m_exception_value );
        generator->m_exception_value = generator->m_exception_type;
        generator->m_exception_type = INCREASE_REFCOUNT( PyExceptionInstance_Class( generator->m_exception_type ) );
    }
    else
    {
        PyErr_Format(
            PyExc_TypeError,
#if PYTHON_VERSION < 300
            "exceptions must be classes, or instances, not %s",
#else
            "exceptions must be classes or instances deriving from BaseException, not %s",
#endif
            Py_TYPE( generator->m_exception_type )->tp_name
        );
        return NULL;
    }

    if ( ( generator->m_exception_tb != NULL ) && ( (PyObject *)generator->m_exception_tb != Py_None ) && ( !PyTraceBack_Check( generator->m_exception_tb ) ) )
    {
        PyErr_Format( PyExc_TypeError, "throw() third argument must be a traceback object" );
        return NULL;
    }

    PyObject *exception_type = generator->m_exception_type;
    PyObject *exception_value = generator->m_exception_value;
    PyTracebackObject *exception_tb = generator->m_exception_tb;

    if ( generator->m_status != status_Finished )
    {
        PyObject *result = Nuitka_Generator_send( generator, Py_None );

        Py_DECREF( exception_type );
        Py_XDECREF( exception_value );
        Py_XDECREF( exception_tb );

        return result;
    }
    else
    {
        PyErr_Restore( generator->m_exception_type, generator->m_exception_value, (PyObject *)generator->m_exception_tb );
        return NULL;
    }
}
Ejemplo n.º 7
0
static PyObject *
gen_throw(PyGenObject *gen, PyObject *args)
{
    PyObject *typ;
    PyObject *tb = NULL;
    PyObject *val = NULL;
    PyObject *yf = gen_yf(gen);
    _Py_IDENTIFIER(throw);

    if (!PyArg_UnpackTuple(args, "throw", 1, 3, &typ, &val, &tb))
        return NULL;

    if (yf) {
        PyObject *ret;
        int err;
        if (PyErr_GivenExceptionMatches(typ, PyExc_GeneratorExit)) {
            gen->gi_running = 1;
            err = gen_close_iter(yf);
            gen->gi_running = 0;
            Py_DECREF(yf);
            if (err < 0)
                return gen_send_ex(gen, Py_None, 1);
            goto throw_here;
        }
        if (PyGen_CheckExact(yf)) {
            gen->gi_running = 1;
            ret = gen_throw((PyGenObject *)yf, args);
            gen->gi_running = 0;
        } else {
            PyObject *meth = _PyObject_GetAttrId(yf, &PyId_throw);
            if (meth == NULL) {
                if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
                    Py_DECREF(yf);
                    return NULL;
                }
                PyErr_Clear();
                Py_DECREF(yf);
                goto throw_here;
            }
            gen->gi_running = 1;
            ret = PyObject_CallObject(meth, args);
            gen->gi_running = 0;
            Py_DECREF(meth);
        }
        Py_DECREF(yf);
        if (!ret) {
            PyObject *val;
            /* Pop subiterator from stack */
            ret = *(--gen->gi_frame->f_stacktop);
            assert(ret == yf);
            Py_DECREF(ret);
            /* Termination repetition of YIELD_FROM */
            gen->gi_frame->f_lasti++;
            if (_PyGen_FetchStopIterationValue(&val) == 0) {
                ret = gen_send_ex(gen, val, 0);
                Py_DECREF(val);
            } else {
                ret = gen_send_ex(gen, Py_None, 1);
            }
        }
        return ret;
    }

throw_here:
    /* First, check the traceback argument, replacing None with
       NULL. */
    if (tb == Py_None) {
        tb = NULL;
    }
    else if (tb != NULL && !PyTraceBack_Check(tb)) {
        PyErr_SetString(PyExc_TypeError,
            "throw() third argument must be a traceback object");
        return NULL;
    }

    Py_INCREF(typ);
    Py_XINCREF(val);
    Py_XINCREF(tb);

    if (PyExceptionClass_Check(typ))
        PyErr_NormalizeException(&typ, &val, &tb);

    else if (PyExceptionInstance_Check(typ)) {
        /* Raising an instance.  The value should be a dummy. */
        if (val && val != Py_None) {
            PyErr_SetString(PyExc_TypeError,
              "instance exception may not have a separate value");
            goto failed_throw;
        }
        else {
            /* Normalize to raise <class>, <instance> */
            Py_XDECREF(val);
            val = typ;
            typ = PyExceptionInstance_Class(typ);
            Py_INCREF(typ);

            if (tb == NULL)
                /* Returns NULL if there's no traceback */
                tb = PyException_GetTraceback(val);
        }
    }
    else {
        /* Not something you can raise.  throw() fails. */
        PyErr_Format(PyExc_TypeError,
                     "exceptions must be classes or instances "
                     "deriving from BaseException, not %s",
                     Py_TYPE(typ)->tp_name);
            goto failed_throw;
    }

    PyErr_Restore(typ, val, tb);
    return gen_send_ex(gen, Py_None, 1);

failed_throw:
    /* Didn't use our arguments, so restore their original refcounts */
    Py_DECREF(typ);
    Py_XDECREF(val);
    Py_XDECREF(tb);
    return NULL;
}
Ejemplo n.º 8
0
void XBPyThread::stop()
{
  CSingleLock lock(m_critSec);
  if(m_stopping)
    return;

  m_stopping = true;

  if (m_threadState)
  {
    PyEval_AcquireLock();
    PyThreadState* old = PyThreadState_Swap((PyThreadState*)m_threadState);

    //tell xbmc.Monitor to call onAbortRequested()
    if (addon)
      g_pythonParser.OnAbortRequested(addon->ID());

    PyObject *m;
    m = PyImport_AddModule((char*)"xbmc");
    if(!m || PyObject_SetAttrString(m, (char*)"abortRequested", PyBool_FromLong(1)))
      CLog::Log(LOGERROR, "XBPyThread::stop - failed to set abortRequested");

    PyThreadState_Swap(old);
    old = NULL;
    PyEval_ReleaseLock();

    XbmcThreads::EndTime timeout(PYTHON_SCRIPT_TIMEOUT);
    while (!stoppedEvent.WaitMSec(15))
    {
      if (timeout.IsTimePast())
      {
        CLog::Log(LOGERROR, "XBPyThread::stop - script %s didn't stop in %d seconds - let's kill it", m_source, PYTHON_SCRIPT_TIMEOUT / 1000);
        break;
      }
      // We can't empty-spin in the main thread and expect scripts to be able to
      // dismantle themselves. Python dialogs aren't normal XBMC dialogs, they rely
      // on TMSG_GUI_PYTHON_DIALOG messages, so pump the message loop.
      if (g_application.IsCurrentThread())
      {
        CSingleExit ex(g_graphicsContext);
        CApplicationMessenger::Get().ProcessMessages();
      }
    }
    // Useful for add-on performance metrics
    if (!timeout.IsTimePast())
      CLog::Log(LOGDEBUG, "XBPyThread::stop - script termination took %dms", PYTHON_SCRIPT_TIMEOUT - timeout.MillisLeft());
    
    //everything which didn't exit by now gets killed
    {
      // grabbing the PyLock while holding the XBPython m_critSec is asking for a deadlock
      CSingleExit ex2(m_critSec);
      PyEval_AcquireLock();
    }

    // since we released the XBPython m_critSec it's possible that the state is cleaned up 
    // so we need to recheck for m_threadState == NULL
    if (m_threadState)
    {
      old = PyThreadState_Swap((PyThreadState*)m_threadState);    
      for(PyThreadState* state = ((PyThreadState*)m_threadState)->interp->tstate_head; state; state = state->next)
      {
        // Raise a SystemExit exception in python threads
        Py_XDECREF(state->async_exc);
        state->async_exc = PyExc_SystemExit;
        Py_XINCREF(state->async_exc);
      }

      // If a dialog entered its doModal(), we need to wake it to see the exception
      g_pythonParser.PulseGlobalEvent();

    }

    if (old != NULL)
      PyThreadState_Swap(old);

    lock.Leave();
    PyEval_ReleaseLock();
  }
}
Ejemplo n.º 9
0
NoInline VOID PyAddRef(PyObject *Object)
{
    Py_XINCREF(Object);
}
Ejemplo n.º 10
0
PyFrameObject *
PyFrame_New(PyThreadState *tstate, PyCodeObject *code, PyObject *globals,
            PyObject *locals)
{
    PyFrameObject *back = tstate->frame;
    PyFrameObject *f;
    PyObject *builtins;
    Py_ssize_t i;

#ifdef Py_DEBUG
    if (code == NULL || globals == NULL || !PyDict_Check(globals) ||
        (locals != NULL && !PyMapping_Check(locals))) {
        PyErr_BadInternalCall();
        return NULL;
    }
#endif
    if (back == NULL || back->f_globals != globals) {
        builtins = _PyDict_GetItemId(globals, &PyId___builtins__);
        if (builtins) {
            if (PyModule_Check(builtins)) {
                builtins = PyModule_GetDict(builtins);
                assert(builtins != NULL);
            }
        }
        if (builtins == NULL) {
            /* No builtins!              Make up a minimal one
               Give them 'None', at least. */
            builtins = PyDict_New();
            if (builtins == NULL ||
                PyDict_SetItemString(
                    builtins, "None", Py_None) < 0)
                return NULL;
        }
        else
            Py_INCREF(builtins);

    }
    else {
        /* If we share the globals, we share the builtins.
           Save a lookup and a call. */
        builtins = back->f_builtins;
        assert(builtins != NULL);
        Py_INCREF(builtins);
    }
    if (code->co_zombieframe != NULL) {
        f = code->co_zombieframe;
        code->co_zombieframe = NULL;
        _Py_NewReference((PyObject *)f);
        assert(f->f_code == code);
    }
    else {
        Py_ssize_t extras, ncells, nfrees;
        ncells = PyTuple_GET_SIZE(code->co_cellvars);
        nfrees = PyTuple_GET_SIZE(code->co_freevars);
        extras = code->co_stacksize + code->co_nlocals + ncells +
            nfrees;
        if (free_list == NULL) {
            f = PyObject_GC_NewVar(PyFrameObject, &PyFrame_Type,
            extras);
            if (f == NULL) {
                Py_DECREF(builtins);
                return NULL;
            }
        }
        else {
            assert(numfree > 0);
            --numfree;
            f = free_list;
            free_list = free_list->f_back;
            if (Py_SIZE(f) < extras) {
                PyFrameObject *new_f = PyObject_GC_Resize(PyFrameObject, f, extras);
                if (new_f == NULL) {
                    PyObject_GC_Del(f);
                    Py_DECREF(builtins);
                    return NULL;
                }
                f = new_f;
            }
            _Py_NewReference((PyObject *)f);
        }

        f->f_code = code;
        extras = code->co_nlocals + ncells + nfrees;
        f->f_valuestack = f->f_localsplus + extras;
        for (i=0; i<extras; i++)
            f->f_localsplus[i] = NULL;
        f->f_locals = NULL;
        f->f_trace = NULL;
        f->f_exc_type = f->f_exc_value = f->f_exc_traceback = NULL;
    }
    f->f_stacktop = f->f_valuestack;
    f->f_builtins = builtins;
    Py_XINCREF(back);
    f->f_back = back;
    Py_INCREF(code);
    Py_INCREF(globals);
    f->f_globals = globals;
    /* Most functions have CO_NEWLOCALS and CO_OPTIMIZED set. */
    if ((code->co_flags & (CO_NEWLOCALS | CO_OPTIMIZED)) ==
        (CO_NEWLOCALS | CO_OPTIMIZED))
        ; /* f_locals = NULL; will be set by PyFrame_FastToLocals() */
    else if (code->co_flags & CO_NEWLOCALS) {
        locals = PyDict_New();
        if (locals == NULL) {
            Py_DECREF(f);
            return NULL;
        }
        f->f_locals = locals;
    }
    else {
        if (locals == NULL)
            locals = globals;
        Py_INCREF(locals);
        f->f_locals = locals;
    }

    f->f_lasti = -1;
    f->f_lineno = code->co_firstlineno;
    f->f_iblock = 0;
    f->f_executing = 0;
    f->f_gen = NULL;

    _PyObject_GC_TRACK(f);
    return f;
}
Ejemplo n.º 11
0
static int
Wcs_init(
    Wcs* self,
    PyObject* args,
    /*@unused@*/ PyObject* kwds) {

  size_t       i;
  PyObject*    py_sip;
  PyObject*    py_wcsprm;
  PyObject*    py_distortion_lookup[2];
  PyObject*    py_det2im[2];

  if (!PyArg_ParseTuple
      (args, "O(OO)O(OO):Wcs.__init__",
       &py_sip,
       &py_distortion_lookup[0],
       &py_distortion_lookup[1],
       &py_wcsprm,
       &py_det2im[0],
       &py_det2im[1])) {
    return -1;
  }

  /* Check and set Distortion lookup tables */
  for (i = 0; i < 2; ++i) {
    if (py_det2im[i] != NULL && py_det2im[i] != Py_None) {
      if (!PyObject_TypeCheck(py_det2im[i], &PyDistLookupType)) {
        PyErr_SetString(PyExc_TypeError,
                        "Arg 4 must be a pair of DistortionLookupTable or None objects");
        return -1;
      }

      self->py_det2im[i] = py_det2im[i];
      self->x.det2im[i] = &(((PyDistLookup*)py_det2im[i])->x);
    }
  }

  /* Check and set SIP */
  if (py_sip != NULL && py_sip != Py_None) {
    if (!PyObject_TypeCheck(py_sip, &PySipType)) {
      PyErr_SetString(PyExc_TypeError,
                      "Arg 1 must be Sip object");
      return -1;
    }

    self->py_sip = py_sip;
    self->x.sip = &(((PySip*)py_sip)->x);
  }

  /* Check and set Distortion lookup tables */
  for (i = 0; i < 2; ++i) {
    if (py_distortion_lookup[i] != NULL && py_distortion_lookup[i] != Py_None) {
      if (!PyObject_TypeCheck(py_distortion_lookup[i], &PyDistLookupType)) {
        PyErr_SetString(PyExc_TypeError,
                        "Arg 2 must be a pair of DistortionLookupTable or None objects");
        return -1;
      }

      self->py_distortion_lookup[i] = py_distortion_lookup[i];
      self->x.cpdis[i] = &(((PyDistLookup*)py_distortion_lookup[i])->x);
    }
  }

  /* Set and lookup Wcsprm object */
  if (py_wcsprm != NULL && py_wcsprm != Py_None) {
    if (!PyObject_TypeCheck(py_wcsprm, &PyWcsprmType)) {
      PyErr_SetString(PyExc_TypeError,
                      "Arg 3 must be Wcsprm object");
      return -1;
    }

    self->py_wcsprm = py_wcsprm;
    self->x.wcs = &(((PyWcsprm*)py_wcsprm)->x);
  }

  Py_XINCREF(self->py_sip);
  Py_XINCREF(self->py_distortion_lookup[0]);
  Py_XINCREF(self->py_distortion_lookup[1]);
  Py_XINCREF(self->py_wcsprm);
  Py_XINCREF(self->py_det2im[0]);
  Py_XINCREF(self->py_det2im[1]);

  return 0;
}
Ejemplo n.º 12
0
// This is for CPython iterator objects, the respective code is not exported as
// API, so we need to redo it. This is an re-implementation that closely follows
// what it does. It's unrelated to compiled generators.
PyObject *PyGen_Send( PyGenObject *generator, PyObject *arg )
{
    if (unlikely( generator->gi_running ))
    {
        PyErr_SetString( PyExc_ValueError, "generator already executing" );
        return NULL;
    }

    PyFrameObject *frame = generator->gi_frame;

    if ( frame == NULL || frame->f_stacktop == NULL )
    {
        // Set exception if called from send()
        if ( arg != NULL )
        {
            PyErr_SetNone( PyExc_StopIteration );
        }

        return NULL;
    }

    if ( frame->f_lasti == -1 )
    {
        if (unlikely( arg && arg != Py_None ))
        {
            PyErr_SetString(
                PyExc_TypeError,
                "can't send non-None value to a just-started generator"
            );

            return NULL;
        }
    }
    else
    {
        // Put arg on top of the value stack
        PyObject *tmp = arg ? arg : Py_None;
        *(frame->f_stacktop++) = INCREASE_REFCOUNT( tmp );
    }

    // Generators always return to their most recent caller, not necessarily
    // their creator.
    PyThreadState *tstate = PyThreadState_GET();
    Py_XINCREF( tstate->frame );

    assert( frame->f_back == NULL );
    frame->f_back = tstate->frame;

    generator->gi_running = 1;
    PyObject *result = PyEval_EvalFrameEx( frame, 0 );
    generator->gi_running = 0;

    // Don't keep the reference to f_back any longer than necessary.  It
    // may keep a chain of frames alive or it could create a reference
    // cycle.
    assert( frame->f_back == tstate->frame );
    Py_CLEAR( frame->f_back );

    // If the generator just returned (as opposed to yielding), signal that the
    // generator is exhausted.
    if ( result && frame->f_stacktop == NULL )
    {
        if ( result == Py_None )
        {
            PyErr_SetNone( PyExc_StopIteration );
        }
        else {
            PyObject *e = PyObject_CallFunctionObjArgs(
                PyExc_StopIteration,
                result,
                NULL
            );

            if ( e != NULL )
            {
                PyErr_SetObject( PyExc_StopIteration, e );
                Py_DECREF( e );
            }
        }

        Py_CLEAR( result );
    }

    if ( result == NULL || frame->f_stacktop == NULL )
    {
        // Generator is finished, remove exception from frame before releasing
        // it.
        PyObject *type = frame->f_exc_type;
        PyObject *value = frame->f_exc_value;
        PyObject *traceback = frame->f_exc_traceback;
        frame->f_exc_type = NULL;
        frame->f_exc_value = NULL;
        frame->f_exc_traceback = NULL;
        Py_XDECREF( type );
        Py_XDECREF( value );
        Py_XDECREF( traceback );

        // Now release frame.
        generator->gi_frame = NULL;
        Py_DECREF( frame );
    }

    return result;
}
Ejemplo n.º 13
0
static PyObject *Nuitka_Generator_send( Nuitka_GeneratorObject *generator, PyObject *value )
{
    if ( generator->m_status == status_Unused && value != NULL && value != Py_None )
    {
        PyErr_Format( PyExc_TypeError, "can't send non-None value to a just-started generator" );
        return NULL;
    }

    if ( generator->m_status != status_Finished )
    {
        PyThreadState *thread_state = PyThreadState_GET();

#if PYTHON_VERSION < 300
        PyObject *saved_exception_type = INCREASE_REFCOUNT_X( thread_state->exc_type );
        PyObject *saved_exception_value = INCREASE_REFCOUNT_X( thread_state->exc_value );
        PyTracebackObject *saved_exception_traceback = INCREASE_REFCOUNT_X( (PyTracebackObject *)thread_state->exc_traceback );
#endif

        if ( generator->m_running )
        {
            PyErr_Format( PyExc_ValueError, "generator already executing" );
            return NULL;
        }

        if ( generator->m_status == status_Unused )
        {
            generator->m_status = status_Running;

            // Prepare the generator context to run. TODO: Make stack size
            // rational.
            prepareFiber( &generator->m_yielder_context, generator->m_code, (unsigned long)generator );
        }

        generator->m_yielded = value;

        // Put the generator back on the frame stack.
        PyFrameObject *return_frame = thread_state->frame;
#ifndef __NUITKA_NO_ASSERT__
        if ( return_frame )
        {
            assertFrameObject( return_frame );
        }
#endif

        if ( generator->m_frame )
        {
            // It would be nice if our frame were still alive. Nobody had the
            // right to release it.
            assertFrameObject( generator->m_frame );

            // It's not supposed to be on the top right now.
            assert( return_frame != generator->m_frame );

            Py_XINCREF( return_frame );
            generator->m_frame->f_back = return_frame;

            thread_state->frame = generator->m_frame;
        }

        // Continue the yielder function while preventing recursion.
        generator->m_running = true;

        swapFiber( &generator->m_caller_context, &generator->m_yielder_context );

        generator->m_running = false;

        thread_state = PyThreadState_GET();

        // Remove the generator from the frame stack.
        assert( thread_state->frame == generator->m_frame );
        assertFrameObject( generator->m_frame );

        thread_state->frame = return_frame;
        Py_CLEAR( generator->m_frame->f_back );

        if ( generator->m_yielded == NULL )
        {
            assert( ERROR_OCCURED() );

            generator->m_status = status_Finished;

            Py_XDECREF( generator->m_frame );
            generator->m_frame = NULL;

            if ( generator->m_context )
            {
                // Surpressing exception in cleanup, to restore later before
                // return.
                PythonException saved_exception;

                generator->m_cleanup( generator->m_context );
                generator->m_context = NULL;

                saved_exception.toPython();
            }

            assert( ERROR_OCCURED() );

#if PYTHON_VERSION < 300
            Py_XDECREF( saved_exception_type );
            Py_XDECREF( saved_exception_value );
            Py_XDECREF( saved_exception_traceback );
#endif
            return NULL;
        }
        else
        {
#if PYTHON_VERSION < 300
            _SET_CURRENT_EXCEPTION( saved_exception_type, saved_exception_value, saved_exception_traceback );

            Py_XDECREF( saved_exception_type );
            Py_XDECREF( saved_exception_value );
            Py_XDECREF( saved_exception_traceback );
#endif

            return generator->m_yielded;
        }
    }
    else
    {
        PyErr_SetObject( PyExc_StopIteration, (PyObject *)NULL );

        return NULL;
    }
}
Ejemplo n.º 14
0
NUITKA_MAY_BE_UNUSED static PyTracebackObject *INCREASE_REFCOUNT_X( PyTracebackObject *traceback_object )
{
    Py_XINCREF( traceback_object );
    return traceback_object;
}
Ejemplo n.º 15
0
static PyObject *
gen_send_ex(PyGenObject *gen, PyObject *arg, int exc)
{
    PyThreadState *tstate = PyThreadState_GET();
    PyFrameObject *f = gen->gi_frame;
    PyObject *result;

    if (gen->gi_running) {
        char *msg = "generator already executing";
        if (PyCoro_CheckExact(gen))
            msg = "coroutine already executing";
        PyErr_SetString(PyExc_ValueError, msg);
        return NULL;
    }
    if (f == NULL || f->f_stacktop == NULL) {
        /* Only set exception if called from send() */
        if (arg && !exc)
            PyErr_SetNone(PyExc_StopIteration);
        return NULL;
    }

    if (f->f_lasti == -1) {
        if (arg && arg != Py_None) {
            char *msg = "can't send non-None value to a "
                        "just-started generator";
            if (PyCoro_CheckExact(gen))
                msg = "can't send non-None value to a "
                      "just-started coroutine";
            PyErr_SetString(PyExc_TypeError, msg);
            return NULL;
        }
    } else {
        /* Push arg onto the frame's value stack */
        result = arg ? arg : Py_None;
        Py_INCREF(result);
        *(f->f_stacktop++) = result;
    }

    /* Generators always return to their most recent caller, not
     * necessarily their creator. */
    Py_XINCREF(tstate->frame);
    assert(f->f_back == NULL);
    f->f_back = tstate->frame;

    gen->gi_running = 1;
    result = PyEval_EvalFrameEx(f, exc);
    gen->gi_running = 0;

    /* Don't keep the reference to f_back any longer than necessary.  It
     * may keep a chain of frames alive or it could create a reference
     * cycle. */
    assert(f->f_back == tstate->frame);
    Py_CLEAR(f->f_back);

    /* If the generator just returned (as opposed to yielding), signal
     * that the generator is exhausted. */
    if (result && f->f_stacktop == NULL) {
        if (result == Py_None) {
            /* Delay exception instantiation if we can */
            PyErr_SetNone(PyExc_StopIteration);
        } else {
            PyObject *e = PyObject_CallFunctionObjArgs(
                               PyExc_StopIteration, result, NULL);
            if (e != NULL) {
                PyErr_SetObject(PyExc_StopIteration, e);
                Py_DECREF(e);
            }
        }
        Py_CLEAR(result);
    }
    else if (!result && PyErr_ExceptionMatches(PyExc_StopIteration)) {
        /* Check for __future__ generator_stop and conditionally turn
         * a leaking StopIteration into RuntimeError (with its cause
         * set appropriately). */
        if (((PyCodeObject *)gen->gi_code)->co_flags &
              (CO_FUTURE_GENERATOR_STOP | CO_COROUTINE | CO_ITERABLE_COROUTINE))
        {
            PyObject *exc, *val, *val2, *tb;
            char *msg = "generator raised StopIteration";
            if (PyCoro_CheckExact(gen))
                msg = "coroutine raised StopIteration";
            PyErr_Fetch(&exc, &val, &tb);
            PyErr_NormalizeException(&exc, &val, &tb);
            if (tb != NULL)
                PyException_SetTraceback(val, tb);
            Py_DECREF(exc);
            Py_XDECREF(tb);
            PyErr_SetString(PyExc_RuntimeError, msg);
            PyErr_Fetch(&exc, &val2, &tb);
            PyErr_NormalizeException(&exc, &val2, &tb);
            Py_INCREF(val);
            PyException_SetCause(val2, val);
            PyException_SetContext(val2, val);
            PyErr_Restore(exc, val2, tb);
        }
        else {
            PyObject *exc, *val, *tb;

            /* Pop the exception before issuing a warning. */
            PyErr_Fetch(&exc, &val, &tb);

            if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1,
                                 "generator '%.50S' raised StopIteration",
                                 gen->gi_qualname)) {
                /* Warning was converted to an error. */
                Py_XDECREF(exc);
                Py_XDECREF(val);
                Py_XDECREF(tb);
            }
            else {
                PyErr_Restore(exc, val, tb);
            }
        }
    }

    if (!result || f->f_stacktop == NULL) {
        /* generator can't be rerun, so release the frame */
        /* first clean reference cycle through stored exception traceback */
        PyObject *t, *v, *tb;
        t = f->f_exc_type;
        v = f->f_exc_value;
        tb = f->f_exc_traceback;
        f->f_exc_type = NULL;
        f->f_exc_value = NULL;
        f->f_exc_traceback = NULL;
        Py_XDECREF(t);
        Py_XDECREF(v);
        Py_XDECREF(tb);
        gen->gi_frame->f_gen = NULL;
        gen->gi_frame = NULL;
        Py_DECREF(f);
    }

    return result;
}
Ejemplo n.º 16
0
void EventListener::ProcessEvent(Event& event)
{
	// If we've got nothing to do, abort
	if (!callable && source_code.Empty())
		return;

	// Do we need to compile the code?
	if (!callable && !source_code.Empty())
	{
		// Attempt to compile the code
		if (!Compile())
			return;
	}

	PyObject* py_namespace = GetGlobalNamespace();

	// Store current globals
	PyObject* old_event = PyDict_GetItemString(py_namespace, "event");
	PyObject* old_self = PyDict_GetItemString(py_namespace, "self");
	PyObject* old_document = PyDict_GetItemString(py_namespace, "document");
	// Clear any pending errors (KeyErrors if they didn't exist)
	PyErr_Clear();

	// Increase the ref to store the old values locally
	Py_XINCREF(old_event);
	Py_XINCREF(old_self);
	Py_XINCREF(old_document);

	// Set up the new expected globals
	PyDict_SetItemString(py_namespace, "event", Rocket::Core::Python::Utilities::MakeObject(&event).ptr());
	PyDict_SetItemString(py_namespace, "self", Rocket::Core::Python::Utilities::MakeObject(element).ptr());
	PyDict_SetItemString(py_namespace, "document", Rocket::Core::Python::Utilities::MakeObject(element->GetOwnerDocument()).ptr());

	// Call the bound function
	PyObject* result = NULL;
	try
	{
		result = PyObject_CallObject(callable, NULL);
	}
	catch (python::error_already_set&)
	{		
	}

	// Check error conditions
	if (result)
	{
		Py_DECREF(result);
	}
	else
	{		
		Rocket::Core::Python::Utilities::PrintError(true);
	}

	// Remove the globals
	PyDict_DelItemString(py_namespace, "document");
	PyDict_DelItemString(py_namespace, "self");
	PyDict_DelItemString(py_namespace, "event");

	// Restore old events if necessary
	if (old_event)
	{
		PyDict_SetItemString(py_namespace, "event", old_event);
		Py_DECREF(old_event);
	}
	if (old_self)
	{
		PyDict_SetItemString(py_namespace, "self", old_self);
		Py_DECREF(old_self);
	}
	if (old_document)
	{
		PyDict_SetItemString(py_namespace, "document", old_document);
		Py_DECREF(old_document);
	}
}
Ejemplo n.º 17
0
inline T* xincref(T* p)
{
    Py_XINCREF(python::upcast<PyObject>(p));
    return p;
}
Ejemplo n.º 18
0
PyObject *
PyObject_GenericGetAttr(PyObject *obj, PyObject *name)
{
	PyTypeObject *tp = obj->ob_type;
	PyObject *descr = NULL;
	PyObject *res = NULL;
	descrgetfunc f;
	Py_ssize_t dictoffset;
	PyObject **dictptr;

	if (!PyString_Check(name)){
#ifdef Py_USING_UNICODE
		/* The Unicode to string conversion is done here because the
		   existing tp_setattro slots expect a string object as name
		   and we wouldn't want to break those. */
		if (PyUnicode_Check(name)) {
			name = PyUnicode_AsEncodedString(name, NULL, NULL);
			if (name == NULL)
				return NULL;
		}
		else
#endif
		{
			PyErr_Format(PyExc_TypeError,
				     "attribute name must be string, not '%.200s'",
				     name->ob_type->tp_name);
			return NULL;
		}
	}
	else
		Py_INCREF(name);

	if (tp->tp_dict == NULL) {
		if (PyType_Ready(tp) < 0)
			goto done;
	}

	/* Inline _PyType_Lookup */
	{
		Py_ssize_t i, n;
		PyObject *mro, *base, *dict;

		/* Look in tp_dict of types in MRO */
		mro = tp->tp_mro;
		assert(mro != NULL);
		assert(PyTuple_Check(mro));
		n = PyTuple_GET_SIZE(mro);
		for (i = 0; i < n; i++) {
			base = PyTuple_GET_ITEM(mro, i);
			if (PyClass_Check(base))
				dict = ((PyClassObject *)base)->cl_dict;
			else {
				assert(PyType_Check(base));
				dict = ((PyTypeObject *)base)->tp_dict;
			}
			assert(dict && PyDict_Check(dict));
			descr = PyDict_GetItem(dict, name);
			if (descr != NULL)
				break;
		}
	}

	Py_XINCREF(descr);

	f = NULL;
	if (descr != NULL &&
	    PyType_HasFeature(descr->ob_type, Py_TPFLAGS_HAVE_CLASS)) {
		f = descr->ob_type->tp_descr_get;
		if (f != NULL && PyDescr_IsData(descr)) {
			res = f(descr, obj, (PyObject *)obj->ob_type);
			Py_DECREF(descr);
			goto done;
		}
	}

	/* Inline _PyObject_GetDictPtr */
	dictoffset = tp->tp_dictoffset;
	if (dictoffset != 0) {
		PyObject *dict;
		if (dictoffset < 0) {
			Py_ssize_t tsize;
			size_t size;

			tsize = ((PyVarObject *)obj)->ob_size;
			if (tsize < 0)
				tsize = -tsize;
			size = _PyObject_VAR_SIZE(tp, tsize);

			dictoffset += (long)size;
			assert(dictoffset > 0);
			assert(dictoffset % SIZEOF_VOID_P == 0);
		}
		dictptr = (PyObject **) ((char *)obj + dictoffset);
		dict = *dictptr;
		if (dict != NULL) {
			Py_INCREF(dict);
			res = PyDict_GetItem(dict, name);
			if (res != NULL) {
				Py_INCREF(res);
				Py_XDECREF(descr);
                                Py_DECREF(dict);
				goto done;
			}
                        Py_DECREF(dict);
		}
	}

	if (f != NULL) {
		res = f(descr, obj, (PyObject *)obj->ob_type);
		Py_DECREF(descr);
		goto done;
	}

	if (descr != NULL) {
		res = descr;
		/* descr was already increfed above */
		goto done;
	}

	PyErr_Format(PyExc_AttributeError,
		     "'%.50s' object has no attribute '%.400s'",
		     tp->tp_name, PyString_AS_STRING(name));
  done:
	Py_DECREF(name);
	return res;
}
Ejemplo n.º 19
0
PyG_Base::PyG_Base(PyObject *instance, const nsIID &iid)
{
	// Note that "instance" is the _policy_ instance!!
	PR_AtomicIncrement(&cGateways);
	m_pBaseObject = GetDefaultGateway(instance);
	// m_pWeakRef is an nsCOMPtr and needs no init.

	NS_ABORT_IF_FALSE(!(iid.Equals(NS_GET_IID(nsISupportsWeakReference)) || iid.Equals(NS_GET_IID(nsIWeakReference))),"Should not be creating gateways with weak-ref interfaces");
	m_iid = iid;
	m_pPyObject = instance;
	NS_PRECONDITION(instance, "NULL PyObject for PyXPCOM_XPTStub!");

#ifdef NS_BUILD_REFCNT_LOGGING
	// If XPCOM reference count logging is enabled, then allow us to give the Python class.
	PyObject *realInstance = PyObject_GetAttrString(instance, "_obj_");
	PyObject *r = PyObject_Repr(realInstance);
	const char *szRepr;
	if (r==NULL) {
		PyXPCOM_LogError("Getting the __repr__ of the object failed");
		PyErr_Clear();
		szRepr = "(repr failed!)";
	}
	else
		szRepr = PyString_AsString(r);
	if (szRepr==NULL) szRepr = "";
	int reprOffset = *szRepr=='<' ? 1 : 0;
	static const char *reprPrefix = "component:";
	if (strncmp(reprPrefix, szRepr+reprOffset, strlen(reprPrefix)) == 0)
		reprOffset += strlen(reprPrefix);
	strncpy(refcntLogRepr, szRepr + reprOffset, sizeof(refcntLogRepr)-1);
	refcntLogRepr[sizeof(refcntLogRepr)-1] = '\0';
	// See if we should get rid of the " at 0x12345" portion.
	char *lastPos = strstr(refcntLogRepr, " at ");
	if (lastPos) *lastPos = '\0';
	Py_XDECREF(realInstance);
	Py_XDECREF(r);
#endif // NS_BUILD_REFCNT_LOGGING

#ifdef DEBUG_LIFETIMES
	{
		char *iid_repr;
		nsCOMPtr<nsIInterfaceInfoManager> iim = XPTI_GetInterfaceInfoManager();
		if (iim!=nsnull)
			iim->GetNameForIID(&iid, &iid_repr);
		PyObject *real_instance = PyObject_GetAttrString(instance, "_obj_");
		PyObject *real_repr = PyObject_Repr(real_instance);

		PYXPCOM_LOG_DEBUG("PyG_Base created at %p\n  instance_repr=%s\n  IID=%s\n", this, PyString_AsString(real_repr), iid_repr);
		nsMemory::Free(iid_repr);
		Py_XDECREF(real_instance);
		Py_XDECREF(real_repr);
	}
#endif // DEBUG_LIFETIMES
	Py_XINCREF(instance); // instance should never be NULL - but whats an X between friends!

	PyXPCOM_DLLAddRef();

#ifdef DEBUG_FULL
	LogF("PyGatewayBase: created %s", m_pPyObject ? m_pPyObject->ob_type->tp_name : "<NULL>");
#endif
}
Ejemplo n.º 20
0
 PyObjectRef(const PyObjectRef &ref):
     obj(ref.obj)
 {
     Py_XINCREF(obj);
 }
Ejemplo n.º 21
0
static int model_init(ContentModelObject *self, PyObject *args, PyObject *kwds)
{
  static char *kwlist[] = { "type", "content", "quant", "label", "doc", NULL };
  PyObject *seq, *content, *label=NULL, *doc=NULL;
  ContentType type;
  ContentQuant quant=CONTENT_QUANT_NONE;
  int i;

  if (!PyArg_ParseTupleAndKeywords(args, kwds, "iO|iOO:ContentModel", kwlist,
                                   &type, &content, &quant, &label, &doc))
    return -1;

  switch (type) {
  case CONTENT_TYPE_NAME:
    Py_INCREF(content);
    break;
  case CONTENT_TYPE_SEQ:
  case CONTENT_TYPE_ALT:
    seq = PySequence_Tuple(content);
    if (seq == NULL) {
      if (PyErr_ExceptionMatches(PyExc_TypeError)) {
        PyErr_Format(PyExc_TypeError, "sequence expected, %.80s found",
                     content == Py_None ? "None" : content->ob_type->tp_name);
      }
      return -1;
    }
    content = seq;
    for (i = 0; i < PyTuple_GET_SIZE(content); i++) {
      PyObject *item = PyTuple_GET_ITEM(content, i);
      if (item->ob_type != &ContentModel_Type) {
        PyErr_Format(PyExc_TypeError,
                     "sequence of ContentModel expected, %.80s found at %d",
                     item == Py_None ? "None" : item->ob_type->tp_name, i);
        Py_DECREF(content);
        return -1;
      }
    }
    break;
  default:
    PyErr_Format(PyExc_ValueError, "type must be in range %d to %d",
                 CONTENT_TYPE_NAME, CONTENT_TYPE_ALT);
    return -1;
  }
  self->type = type;
  self->content = content;

  if (quant < CONTENT_QUANT_NONE || quant > CONTENT_QUANT_PLUS) {
    PyErr_Format(PyExc_ValueError, "quant must be in range %d to %d",
                 CONTENT_QUANT_NONE, CONTENT_QUANT_PLUS);
    return -1;
  } else {
    self->quant = quant;
  }

  Py_XINCREF(label);
  self->label = label;

  Py_XINCREF(doc);
  self->doc = doc;

  return 0;
}