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#include <Python.h> 
 
#include <library/python/symbols/registry/syms.h>

#include <util/generic/string.h> 
 
#define CAP(x) SYM_2(x, x)

BEGIN_SYMS("_capability")
#if defined(_musl_)
CAP("musl")
#endif
#if defined(_linux_)
CAP("linux")
#endif
#if defined(_darwin_)
CAP("darwin")
#endif
CAP("_sentinel")
END_SYMS()

#undef CAP

using namespace NPrivate;

namespace {
    template <class T>
    struct TCB: public ICB {
        inline TCB(T& t)
            : CB(&t)
        {
        }

        void Apply(const char* mod, const char* name, void* sym) override {
            (*CB)(mod, name, sym);
        }

        T* CB;
    };

    template <class T>
    static inline TCB<T> MakeTCB(T& t) {
        return t;
    }
}

static void DictSetStringPtr(PyObject* dict, const char* name, void* value) { 
    PyObject* p = PyLong_FromVoidPtr(value); 
    PyDict_SetItemString(dict, name, p); 
    Py_DECREF(p); 
} 

static PyObject* InitSyms(PyObject* m) { 
    if (!m) 
        return NULL; 
    PyObject* d = PyDict_New(); 
    if (!d) 
        return NULL; 

    auto f = [&](const char* mod, const char* name, void* sym) { 
        DictSetStringPtr(d, (TString(mod) + "|" + TString(name)).c_str(), sym); 
    }; 
 
    auto cb = MakeTCB(f); 
 
    ForEachSymbol(cb); 
 
    if (PyObject_SetAttrString(m, "syms", d)) 
        m = NULL; 
    Py_DECREF(d); 
    return m; 
}
 
#if PY_MAJOR_VERSION >= 3 
static struct PyModuleDef module = { 
    PyModuleDef_HEAD_INIT, "syms", NULL, -1, NULL, NULL, NULL, NULL, NULL}; 
 
extern "C" PyObject* PyInit_syms() { 
    return InitSyms(PyModule_Create(&module)); 
} 
#else 
extern "C" void initsyms() { 
    InitSyms(Py_InitModule("syms", NULL)); 
} 
#endif