ai-content-maker/.venv/Lib/site-packages/srsly/msgpack/unpack.h

288 lines
7.9 KiB
C

/*
* MessagePack for Python unpacking routine
*
* Copyright (C) 2009 Naoki INADA
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define MSGPACK_EMBED_STACK_SIZE (1024)
#include "unpack_define.h"
typedef struct unpack_user {
bool use_list;
bool raw;
bool has_pairs_hook;
bool strict_map_key;
PyObject *object_hook;
PyObject *list_hook;
PyObject *ext_hook;
const char *encoding;
const char *unicode_errors;
Py_ssize_t max_str_len, max_bin_len, max_array_len, max_map_len, max_ext_len;
} unpack_user;
typedef PyObject* msgpack_unpack_object;
struct unpack_context;
typedef struct unpack_context unpack_context;
typedef int (*execute_fn)(unpack_context *ctx, const char* data, Py_ssize_t len, Py_ssize_t* off);
static inline msgpack_unpack_object unpack_callback_root(unpack_user* u)
{
return NULL;
}
static inline int unpack_callback_uint16(unpack_user* u, uint16_t d, msgpack_unpack_object* o)
{
PyObject *p = PyInt_FromLong((long)d);
if (!p)
return -1;
*o = p;
return 0;
}
static inline int unpack_callback_uint8(unpack_user* u, uint8_t d, msgpack_unpack_object* o)
{
return unpack_callback_uint16(u, d, o);
}
static inline int unpack_callback_uint32(unpack_user* u, uint32_t d, msgpack_unpack_object* o)
{
PyObject *p = PyInt_FromSize_t((size_t)d);
if (!p)
return -1;
*o = p;
return 0;
}
static inline int unpack_callback_uint64(unpack_user* u, uint64_t d, msgpack_unpack_object* o)
{
PyObject *p;
if (d > LONG_MAX) {
p = PyLong_FromUnsignedLongLong((unsigned PY_LONG_LONG)d);
} else {
p = PyInt_FromLong((long)d);
}
if (!p)
return -1;
*o = p;
return 0;
}
static inline int unpack_callback_int32(unpack_user* u, int32_t d, msgpack_unpack_object* o)
{
PyObject *p = PyInt_FromLong(d);
if (!p)
return -1;
*o = p;
return 0;
}
static inline int unpack_callback_int16(unpack_user* u, int16_t d, msgpack_unpack_object* o)
{
return unpack_callback_int32(u, d, o);
}
static inline int unpack_callback_int8(unpack_user* u, int8_t d, msgpack_unpack_object* o)
{
return unpack_callback_int32(u, d, o);
}
static inline int unpack_callback_int64(unpack_user* u, int64_t d, msgpack_unpack_object* o)
{
PyObject *p;
if (d > LONG_MAX || d < LONG_MIN) {
p = PyLong_FromLongLong((PY_LONG_LONG)d);
} else {
p = PyInt_FromLong((long)d);
}
*o = p;
return 0;
}
static inline int unpack_callback_double(unpack_user* u, double d, msgpack_unpack_object* o)
{
PyObject *p = PyFloat_FromDouble(d);
if (!p)
return -1;
*o = p;
return 0;
}
static inline int unpack_callback_float(unpack_user* u, float d, msgpack_unpack_object* o)
{
return unpack_callback_double(u, d, o);
}
static inline int unpack_callback_nil(unpack_user* u, msgpack_unpack_object* o)
{ Py_INCREF(Py_None); *o = Py_None; return 0; }
static inline int unpack_callback_true(unpack_user* u, msgpack_unpack_object* o)
{ Py_INCREF(Py_True); *o = Py_True; return 0; }
static inline int unpack_callback_false(unpack_user* u, msgpack_unpack_object* o)
{ Py_INCREF(Py_False); *o = Py_False; return 0; }
static inline int unpack_callback_array(unpack_user* u, unsigned int n, msgpack_unpack_object* o)
{
if (n > u->max_array_len) {
PyErr_Format(PyExc_ValueError, "%u exceeds max_array_len(%zd)", n, u->max_array_len);
return -1;
}
PyObject *p = u->use_list ? PyList_New(n) : PyTuple_New(n);
if (!p)
return -1;
*o = p;
return 0;
}
static inline int unpack_callback_array_item(unpack_user* u, unsigned int current, msgpack_unpack_object* c, msgpack_unpack_object o)
{
if (u->use_list)
PyList_SET_ITEM(*c, current, o);
else
PyTuple_SET_ITEM(*c, current, o);
return 0;
}
static inline int unpack_callback_array_end(unpack_user* u, msgpack_unpack_object* c)
{
if (u->list_hook) {
PyObject *new_c = PyObject_CallFunctionObjArgs(u->list_hook, *c, NULL);
if (!new_c)
return -1;
Py_DECREF(*c);
*c = new_c;
}
return 0;
}
static inline int unpack_callback_map(unpack_user* u, unsigned int n, msgpack_unpack_object* o)
{
if (n > u->max_map_len) {
PyErr_Format(PyExc_ValueError, "%u exceeds max_map_len(%zd)", n, u->max_map_len);
return -1;
}
PyObject *p;
if (u->has_pairs_hook) {
p = PyList_New(n); // Or use tuple?
}
else {
p = PyDict_New();
}
if (!p)
return -1;
*o = p;
return 0;
}
static inline int unpack_callback_map_item(unpack_user* u, unsigned int current, msgpack_unpack_object* c, msgpack_unpack_object k, msgpack_unpack_object v)
{
if (u->strict_map_key && !PyUnicode_CheckExact(k) && !PyBytes_CheckExact(k)) {
PyErr_Format(PyExc_ValueError, "%.100s is not allowed for map key", Py_TYPE(k)->tp_name);
return -1;
}
if (u->has_pairs_hook) {
msgpack_unpack_object item = PyTuple_Pack(2, k, v);
if (!item)
return -1;
Py_DECREF(k);
Py_DECREF(v);
PyList_SET_ITEM(*c, current, item);
return 0;
}
else if (PyDict_SetItem(*c, k, v) == 0) {
Py_DECREF(k);
Py_DECREF(v);
return 0;
}
return -1;
}
static inline int unpack_callback_map_end(unpack_user* u, msgpack_unpack_object* c)
{
if (u->object_hook) {
PyObject *new_c = PyObject_CallFunctionObjArgs(u->object_hook, *c, NULL);
if (!new_c)
return -1;
Py_DECREF(*c);
*c = new_c;
}
return 0;
}
static inline int unpack_callback_raw(unpack_user* u, const char* b, const char* p, unsigned int l, msgpack_unpack_object* o)
{
if (l > u->max_str_len) {
PyErr_Format(PyExc_ValueError, "%u exceeds max_str_len(%zd)", l, u->max_str_len);
return -1;
}
PyObject *py;
if (u->encoding) {
py = PyUnicode_Decode(p, l, u->encoding, u->unicode_errors);
} else if (u->raw) {
py = PyBytes_FromStringAndSize(p, l);
} else {
py = PyUnicode_DecodeUTF8(p, l, u->unicode_errors);
}
if (!py)
return -1;
*o = py;
return 0;
}
static inline int unpack_callback_bin(unpack_user* u, const char* b, const char* p, unsigned int l, msgpack_unpack_object* o)
{
if (l > u->max_bin_len) {
PyErr_Format(PyExc_ValueError, "%u exceeds max_bin_len(%zd)", l, u->max_bin_len);
return -1;
}
PyObject *py = PyBytes_FromStringAndSize(p, l);
if (!py)
return -1;
*o = py;
return 0;
}
static inline int unpack_callback_ext(unpack_user* u, const char* base, const char* pos,
unsigned int length, msgpack_unpack_object* o)
{
PyObject *py;
int8_t typecode = (int8_t)*pos++;
if (!u->ext_hook) {
PyErr_SetString(PyExc_AssertionError, "u->ext_hook cannot be NULL");
return -1;
}
if (length-1 > u->max_ext_len) {
PyErr_Format(PyExc_ValueError, "%u exceeds max_ext_len(%zd)", length, u->max_ext_len);
return -1;
}
// length also includes the typecode, so the actual data is length-1
#if PY_MAJOR_VERSION == 2
py = PyObject_CallFunction(u->ext_hook, "(is#)", (int)typecode, pos, (Py_ssize_t)length-1);
#else
py = PyObject_CallFunction(u->ext_hook, "(iy#)", (int)typecode, pos, (Py_ssize_t)length-1);
#endif
if (!py)
return -1;
*o = py;
return 0;
}
#include "unpack_template.h"