mirror of
https://github.com/python/cpython.git
synced 2024-11-27 03:45:08 +08:00
674 lines
18 KiB
C
674 lines
18 KiB
C
/*
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* C Extension module to test Python internal C APIs (Include/internal).
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*/
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#ifndef Py_BUILD_CORE_BUILTIN
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# define Py_BUILD_CORE_MODULE 1
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#endif
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/* Always enable assertions */
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#undef NDEBUG
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#define PY_SSIZE_T_CLEAN
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#include "Python.h"
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#include "pycore_atomic_funcs.h" // _Py_atomic_int_get()
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#include "pycore_bitutils.h" // _Py_bswap32()
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#include "pycore_compile.h" // _PyCompile_CodeGen, _PyCompile_OptimizeCfg
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#include "pycore_fileutils.h" // _Py_normpath
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#include "pycore_frame.h" // _PyInterpreterFrame
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#include "pycore_gc.h" // PyGC_Head
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#include "pycore_hashtable.h" // _Py_hashtable_new()
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#include "pycore_initconfig.h" // _Py_GetConfigsAsDict()
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#include "pycore_pathconfig.h" // _PyPathConfig_ClearGlobal()
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#include "pycore_interp.h" // _PyInterpreterState_GetConfigCopy()
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#include "pycore_pyerrors.h" // _Py_UTF8_Edit_Cost()
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#include "pycore_pystate.h" // _PyThreadState_GET()
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#include "osdefs.h" // MAXPATHLEN
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#include "clinic/_testinternalcapi.c.h"
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/*[clinic input]
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module _testinternalcapi
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[clinic start generated code]*/
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/*[clinic end generated code: output=da39a3ee5e6b4b0d input=7bb583d8c9eb9a78]*/
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static PyObject *
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get_configs(PyObject *self, PyObject *Py_UNUSED(args))
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{
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return _Py_GetConfigsAsDict();
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}
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static PyObject*
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get_recursion_depth(PyObject *self, PyObject *Py_UNUSED(args))
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{
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PyThreadState *tstate = _PyThreadState_GET();
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return PyLong_FromLong(tstate->py_recursion_limit - tstate->py_recursion_remaining);
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}
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static PyObject*
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test_bswap(PyObject *self, PyObject *Py_UNUSED(args))
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{
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uint16_t u16 = _Py_bswap16(UINT16_C(0x3412));
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if (u16 != UINT16_C(0x1234)) {
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PyErr_Format(PyExc_AssertionError,
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"_Py_bswap16(0x3412) returns %u", u16);
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return NULL;
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}
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uint32_t u32 = _Py_bswap32(UINT32_C(0x78563412));
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if (u32 != UINT32_C(0x12345678)) {
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PyErr_Format(PyExc_AssertionError,
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"_Py_bswap32(0x78563412) returns %lu", u32);
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return NULL;
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}
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uint64_t u64 = _Py_bswap64(UINT64_C(0xEFCDAB9078563412));
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if (u64 != UINT64_C(0x1234567890ABCDEF)) {
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PyErr_Format(PyExc_AssertionError,
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"_Py_bswap64(0xEFCDAB9078563412) returns %llu", u64);
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return NULL;
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}
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Py_RETURN_NONE;
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}
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static int
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check_popcount(uint32_t x, int expected)
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{
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// Use volatile to prevent the compiler to optimize out the whole test
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volatile uint32_t u = x;
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int bits = _Py_popcount32(u);
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if (bits != expected) {
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PyErr_Format(PyExc_AssertionError,
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"_Py_popcount32(%lu) returns %i, expected %i",
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(unsigned long)x, bits, expected);
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return -1;
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}
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return 0;
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}
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static PyObject*
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test_popcount(PyObject *self, PyObject *Py_UNUSED(args))
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{
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#define CHECK(X, RESULT) \
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do { \
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if (check_popcount(X, RESULT) < 0) { \
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return NULL; \
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} \
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} while (0)
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CHECK(0, 0);
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CHECK(1, 1);
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CHECK(0x08080808, 4);
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CHECK(0x10000001, 2);
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CHECK(0x10101010, 4);
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CHECK(0x10204080, 4);
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CHECK(0xDEADCAFE, 22);
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CHECK(0xFFFFFFFF, 32);
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Py_RETURN_NONE;
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#undef CHECK
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}
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static int
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check_bit_length(unsigned long x, int expected)
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{
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// Use volatile to prevent the compiler to optimize out the whole test
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volatile unsigned long u = x;
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int len = _Py_bit_length(u);
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if (len != expected) {
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PyErr_Format(PyExc_AssertionError,
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"_Py_bit_length(%lu) returns %i, expected %i",
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x, len, expected);
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return -1;
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}
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return 0;
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}
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static PyObject*
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test_bit_length(PyObject *self, PyObject *Py_UNUSED(args))
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{
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#define CHECK(X, RESULT) \
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do { \
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if (check_bit_length(X, RESULT) < 0) { \
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return NULL; \
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} \
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} while (0)
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CHECK(0, 0);
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CHECK(1, 1);
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CHECK(0x1000, 13);
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CHECK(0x1234, 13);
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CHECK(0x54321, 19);
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CHECK(0x7FFFFFFF, 31);
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CHECK(0xFFFFFFFF, 32);
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Py_RETURN_NONE;
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#undef CHECK
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}
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#define TO_PTR(ch) ((void*)(uintptr_t)ch)
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#define FROM_PTR(ptr) ((uintptr_t)ptr)
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#define VALUE(key) (1 + ((int)(key) - 'a'))
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static Py_uhash_t
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hash_char(const void *key)
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{
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char ch = (char)FROM_PTR(key);
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return ch;
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}
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static int
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hashtable_cb(_Py_hashtable_t *table,
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const void *key_ptr, const void *value_ptr,
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void *user_data)
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{
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int *count = (int *)user_data;
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char key = (char)FROM_PTR(key_ptr);
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int value = (int)FROM_PTR(value_ptr);
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assert(value == VALUE(key));
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*count += 1;
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return 0;
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}
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static PyObject*
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test_hashtable(PyObject *self, PyObject *Py_UNUSED(args))
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{
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_Py_hashtable_t *table = _Py_hashtable_new(hash_char,
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_Py_hashtable_compare_direct);
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if (table == NULL) {
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return PyErr_NoMemory();
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}
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// Using an newly allocated table must not crash
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assert(table->nentries == 0);
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assert(table->nbuckets > 0);
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assert(_Py_hashtable_get(table, TO_PTR('x')) == NULL);
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// Test _Py_hashtable_set()
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char key;
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for (key='a'; key <= 'z'; key++) {
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int value = VALUE(key);
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if (_Py_hashtable_set(table, TO_PTR(key), TO_PTR(value)) < 0) {
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_Py_hashtable_destroy(table);
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return PyErr_NoMemory();
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}
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}
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assert(table->nentries == 26);
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assert(table->nbuckets > table->nentries);
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// Test _Py_hashtable_get_entry()
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for (key='a'; key <= 'z'; key++) {
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_Py_hashtable_entry_t *entry = _Py_hashtable_get_entry(table, TO_PTR(key));
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assert(entry != NULL);
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assert(entry->key == TO_PTR(key));
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assert(entry->value == TO_PTR(VALUE(key)));
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}
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// Test _Py_hashtable_get()
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for (key='a'; key <= 'z'; key++) {
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void *value_ptr = _Py_hashtable_get(table, TO_PTR(key));
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assert((int)FROM_PTR(value_ptr) == VALUE(key));
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}
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// Test _Py_hashtable_steal()
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key = 'p';
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void *value_ptr = _Py_hashtable_steal(table, TO_PTR(key));
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assert((int)FROM_PTR(value_ptr) == VALUE(key));
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assert(table->nentries == 25);
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assert(_Py_hashtable_get_entry(table, TO_PTR(key)) == NULL);
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// Test _Py_hashtable_foreach()
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int count = 0;
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int res = _Py_hashtable_foreach(table, hashtable_cb, &count);
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assert(res == 0);
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assert(count == 25);
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// Test _Py_hashtable_clear()
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_Py_hashtable_clear(table);
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assert(table->nentries == 0);
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assert(table->nbuckets > 0);
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assert(_Py_hashtable_get(table, TO_PTR('x')) == NULL);
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_Py_hashtable_destroy(table);
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Py_RETURN_NONE;
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}
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static PyObject *
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test_get_config(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(args))
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{
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PyConfig config;
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PyConfig_InitIsolatedConfig(&config);
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if (_PyInterpreterState_GetConfigCopy(&config) < 0) {
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PyConfig_Clear(&config);
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return NULL;
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}
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PyObject *dict = _PyConfig_AsDict(&config);
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PyConfig_Clear(&config);
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return dict;
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}
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static PyObject *
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test_set_config(PyObject *Py_UNUSED(self), PyObject *dict)
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{
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PyConfig config;
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PyConfig_InitIsolatedConfig(&config);
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if (_PyConfig_FromDict(&config, dict) < 0) {
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goto error;
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}
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if (_PyInterpreterState_SetConfig(&config) < 0) {
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goto error;
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}
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PyConfig_Clear(&config);
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Py_RETURN_NONE;
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error:
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PyConfig_Clear(&config);
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return NULL;
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}
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static PyObject *
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test_reset_path_config(PyObject *Py_UNUSED(self), PyObject *Py_UNUSED(arg))
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{
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_PyPathConfig_ClearGlobal();
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Py_RETURN_NONE;
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}
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static PyObject*
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test_atomic_funcs(PyObject *self, PyObject *Py_UNUSED(args))
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{
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// Test _Py_atomic_size_get() and _Py_atomic_size_set()
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Py_ssize_t var = 1;
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_Py_atomic_size_set(&var, 2);
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assert(_Py_atomic_size_get(&var) == 2);
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Py_RETURN_NONE;
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}
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static int
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check_edit_cost(const char *a, const char *b, Py_ssize_t expected)
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{
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int ret = -1;
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PyObject *a_obj = NULL;
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PyObject *b_obj = NULL;
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a_obj = PyUnicode_FromString(a);
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if (a_obj == NULL) {
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goto exit;
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}
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b_obj = PyUnicode_FromString(b);
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if (b_obj == NULL) {
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goto exit;
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}
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Py_ssize_t result = _Py_UTF8_Edit_Cost(a_obj, b_obj, -1);
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if (result != expected) {
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PyErr_Format(PyExc_AssertionError,
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"Edit cost from '%s' to '%s' returns %zd, expected %zd",
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a, b, result, expected);
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goto exit;
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}
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// Check that smaller max_edits thresholds are exceeded.
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Py_ssize_t max_edits = result;
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while (max_edits > 0) {
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max_edits /= 2;
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Py_ssize_t result2 = _Py_UTF8_Edit_Cost(a_obj, b_obj, max_edits);
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if (result2 <= max_edits) {
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PyErr_Format(PyExc_AssertionError,
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"Edit cost from '%s' to '%s' (threshold %zd) "
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"returns %zd, expected greater than %zd",
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a, b, max_edits, result2, max_edits);
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goto exit;
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}
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}
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// Check that bigger max_edits thresholds don't change anything
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Py_ssize_t result3 = _Py_UTF8_Edit_Cost(a_obj, b_obj, result * 2 + 1);
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if (result3 != result) {
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PyErr_Format(PyExc_AssertionError,
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"Edit cost from '%s' to '%s' (threshold %zd) "
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"returns %zd, expected %zd",
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a, b, result * 2, result3, result);
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goto exit;
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}
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ret = 0;
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exit:
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Py_XDECREF(a_obj);
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Py_XDECREF(b_obj);
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return ret;
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}
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static PyObject *
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test_edit_cost(PyObject *self, PyObject *Py_UNUSED(args))
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{
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#define CHECK(a, b, n) do { \
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if (check_edit_cost(a, b, n) < 0) { \
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return NULL; \
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} \
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} while (0) \
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CHECK("", "", 0);
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CHECK("", "a", 2);
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CHECK("a", "A", 1);
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CHECK("Apple", "Aple", 2);
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CHECK("Banana", "B@n@n@", 6);
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CHECK("Cherry", "Cherry!", 2);
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CHECK("---0---", "------", 2);
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CHECK("abc", "y", 6);
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CHECK("aa", "bb", 4);
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CHECK("aaaaa", "AAAAA", 5);
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CHECK("wxyz", "wXyZ", 2);
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CHECK("wxyz", "wXyZ123", 8);
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CHECK("Python", "Java", 12);
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CHECK("Java", "C#", 8);
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CHECK("AbstractFoobarManager", "abstract_foobar_manager", 3+2*2);
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CHECK("CPython", "PyPy", 10);
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CHECK("CPython", "pypy", 11);
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CHECK("AttributeError", "AttributeErrop", 2);
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CHECK("AttributeError", "AttributeErrorTests", 10);
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#undef CHECK
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Py_RETURN_NONE;
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}
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static PyObject *
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normalize_path(PyObject *self, PyObject *filename)
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{
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Py_ssize_t size = -1;
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wchar_t *encoded = PyUnicode_AsWideCharString(filename, &size);
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if (encoded == NULL) {
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return NULL;
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}
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PyObject *result = PyUnicode_FromWideChar(_Py_normpath(encoded, size), -1);
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PyMem_Free(encoded);
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return result;
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}
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static PyObject *
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get_getpath_codeobject(PyObject *self, PyObject *Py_UNUSED(args)) {
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return _Py_Get_Getpath_CodeObject();
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}
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static PyObject *
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encode_locale_ex(PyObject *self, PyObject *args)
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{
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PyObject *unicode;
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int current_locale = 0;
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wchar_t *wstr;
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PyObject *res = NULL;
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const char *errors = NULL;
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if (!PyArg_ParseTuple(args, "U|is", &unicode, ¤t_locale, &errors)) {
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return NULL;
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}
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wstr = PyUnicode_AsWideCharString(unicode, NULL);
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if (wstr == NULL) {
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return NULL;
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}
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_Py_error_handler error_handler = _Py_GetErrorHandler(errors);
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char *str = NULL;
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size_t error_pos;
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const char *reason = NULL;
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int ret = _Py_EncodeLocaleEx(wstr,
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&str, &error_pos, &reason,
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current_locale, error_handler);
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PyMem_Free(wstr);
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switch(ret) {
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case 0:
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res = PyBytes_FromString(str);
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PyMem_RawFree(str);
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break;
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case -1:
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PyErr_NoMemory();
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break;
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case -2:
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PyErr_Format(PyExc_RuntimeError, "encode error: pos=%zu, reason=%s",
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error_pos, reason);
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break;
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case -3:
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PyErr_SetString(PyExc_ValueError, "unsupported error handler");
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break;
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default:
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PyErr_SetString(PyExc_ValueError, "unknown error code");
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break;
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}
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return res;
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}
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static PyObject *
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decode_locale_ex(PyObject *self, PyObject *args)
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{
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char *str;
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int current_locale = 0;
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PyObject *res = NULL;
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const char *errors = NULL;
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if (!PyArg_ParseTuple(args, "y|is", &str, ¤t_locale, &errors)) {
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return NULL;
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}
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_Py_error_handler error_handler = _Py_GetErrorHandler(errors);
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wchar_t *wstr = NULL;
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size_t wlen = 0;
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const char *reason = NULL;
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int ret = _Py_DecodeLocaleEx(str,
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&wstr, &wlen, &reason,
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current_locale, error_handler);
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switch(ret) {
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case 0:
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res = PyUnicode_FromWideChar(wstr, wlen);
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PyMem_RawFree(wstr);
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break;
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case -1:
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PyErr_NoMemory();
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break;
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case -2:
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PyErr_Format(PyExc_RuntimeError, "decode error: pos=%zu, reason=%s",
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wlen, reason);
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break;
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case -3:
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PyErr_SetString(PyExc_ValueError, "unsupported error handler");
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break;
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default:
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PyErr_SetString(PyExc_ValueError, "unknown error code");
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break;
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}
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return res;
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}
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static PyObject *record_list = NULL;
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static PyObject *
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set_eval_frame_default(PyObject *self, PyObject *Py_UNUSED(args))
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{
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_PyInterpreterState_SetEvalFrameFunc(PyInterpreterState_Get(), _PyEval_EvalFrameDefault);
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Py_CLEAR(record_list);
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Py_RETURN_NONE;
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}
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static PyObject *
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record_eval(PyThreadState *tstate, struct _PyInterpreterFrame *f, int exc)
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{
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if (PyFunction_Check(f->f_funcobj)) {
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PyList_Append(record_list, ((PyFunctionObject *)f->f_funcobj)->func_name);
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}
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return _PyEval_EvalFrameDefault(tstate, f, exc);
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}
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static PyObject *
|
|
set_eval_frame_record(PyObject *self, PyObject *list)
|
|
{
|
|
if (!PyList_Check(list)) {
|
|
PyErr_SetString(PyExc_TypeError, "argument must be a list");
|
|
return NULL;
|
|
}
|
|
Py_CLEAR(record_list);
|
|
record_list = Py_NewRef(list);
|
|
_PyInterpreterState_SetEvalFrameFunc(PyInterpreterState_Get(), record_eval);
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
/*[clinic input]
|
|
|
|
_testinternalcapi.compiler_codegen -> object
|
|
|
|
ast: object
|
|
filename: object
|
|
optimize: int
|
|
|
|
Apply compiler code generation to an AST.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
_testinternalcapi_compiler_codegen_impl(PyObject *module, PyObject *ast,
|
|
PyObject *filename, int optimize)
|
|
/*[clinic end generated code: output=fbbbbfb34700c804 input=e9fbe6562f7f75e4]*/
|
|
{
|
|
PyCompilerFlags *flags = NULL;
|
|
return _PyCompile_CodeGen(ast, filename, flags, optimize);
|
|
}
|
|
|
|
|
|
/*[clinic input]
|
|
|
|
_testinternalcapi.optimize_cfg -> object
|
|
|
|
instructions: object
|
|
consts: object
|
|
|
|
Apply compiler optimizations to an instruction list.
|
|
[clinic start generated code]*/
|
|
|
|
static PyObject *
|
|
_testinternalcapi_optimize_cfg_impl(PyObject *module, PyObject *instructions,
|
|
PyObject *consts)
|
|
/*[clinic end generated code: output=5412aeafca683c8b input=7e8a3de86ebdd0f9]*/
|
|
{
|
|
return _PyCompile_OptimizeCfg(instructions, consts);
|
|
}
|
|
|
|
|
|
static PyObject *
|
|
get_interp_settings(PyObject *self, PyObject *args)
|
|
{
|
|
int interpid = -1;
|
|
if (!PyArg_ParseTuple(args, "|i:get_interp_settings", &interpid)) {
|
|
return NULL;
|
|
}
|
|
|
|
PyInterpreterState *interp = NULL;
|
|
if (interpid < 0) {
|
|
PyThreadState *tstate = _PyThreadState_GET();
|
|
interp = tstate ? tstate->interp : _PyInterpreterState_Main();
|
|
}
|
|
else if (interpid == 0) {
|
|
interp = _PyInterpreterState_Main();
|
|
}
|
|
else {
|
|
PyErr_Format(PyExc_NotImplementedError,
|
|
"%zd", interpid);
|
|
return NULL;
|
|
}
|
|
assert(interp != NULL);
|
|
|
|
PyObject *settings = PyDict_New();
|
|
if (settings == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Add the feature flags. */
|
|
PyObject *flags = PyLong_FromUnsignedLong(interp->feature_flags);
|
|
if (flags == NULL) {
|
|
Py_DECREF(settings);
|
|
return NULL;
|
|
}
|
|
int res = PyDict_SetItemString(settings, "feature_flags", flags);
|
|
Py_DECREF(flags);
|
|
if (res != 0) {
|
|
Py_DECREF(settings);
|
|
return NULL;
|
|
}
|
|
|
|
return settings;
|
|
}
|
|
|
|
|
|
static PyMethodDef TestMethods[] = {
|
|
{"get_configs", get_configs, METH_NOARGS},
|
|
{"get_recursion_depth", get_recursion_depth, METH_NOARGS},
|
|
{"test_bswap", test_bswap, METH_NOARGS},
|
|
{"test_popcount", test_popcount, METH_NOARGS},
|
|
{"test_bit_length", test_bit_length, METH_NOARGS},
|
|
{"test_hashtable", test_hashtable, METH_NOARGS},
|
|
{"get_config", test_get_config, METH_NOARGS},
|
|
{"set_config", test_set_config, METH_O},
|
|
{"reset_path_config", test_reset_path_config, METH_NOARGS},
|
|
{"test_atomic_funcs", test_atomic_funcs, METH_NOARGS},
|
|
{"test_edit_cost", test_edit_cost, METH_NOARGS},
|
|
{"normalize_path", normalize_path, METH_O, NULL},
|
|
{"get_getpath_codeobject", get_getpath_codeobject, METH_NOARGS, NULL},
|
|
{"EncodeLocaleEx", encode_locale_ex, METH_VARARGS},
|
|
{"DecodeLocaleEx", decode_locale_ex, METH_VARARGS},
|
|
{"set_eval_frame_default", set_eval_frame_default, METH_NOARGS, NULL},
|
|
{"set_eval_frame_record", set_eval_frame_record, METH_O, NULL},
|
|
_TESTINTERNALCAPI_COMPILER_CODEGEN_METHODDEF
|
|
_TESTINTERNALCAPI_OPTIMIZE_CFG_METHODDEF
|
|
{"get_interp_settings", get_interp_settings, METH_VARARGS, NULL},
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
|
|
static struct PyModuleDef _testcapimodule = {
|
|
PyModuleDef_HEAD_INIT,
|
|
"_testinternalcapi",
|
|
NULL,
|
|
-1,
|
|
TestMethods,
|
|
NULL,
|
|
NULL,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
|
|
PyMODINIT_FUNC
|
|
PyInit__testinternalcapi(void)
|
|
{
|
|
PyObject *module = PyModule_Create(&_testcapimodule);
|
|
if (module == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
if (PyModule_AddObject(module, "SIZEOF_PYGC_HEAD",
|
|
PyLong_FromSsize_t(sizeof(PyGC_Head))) < 0) {
|
|
goto error;
|
|
}
|
|
|
|
return module;
|
|
|
|
error:
|
|
Py_DECREF(module);
|
|
return NULL;
|
|
}
|