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#include "parse_c_type.c"
#include "realize_c_type.c"
#define CFFI_VERSION_MIN 0x2601
#define CFFI_VERSION_CHAR16CHAR32 0x2801
#define CFFI_VERSION_MAX 0x28FF
typedef struct FFIObject_s FFIObject;
typedef struct LibObject_s LibObject;
static PyTypeObject FFI_Type; /* forward */
static PyTypeObject Lib_Type; /* forward */
#include "ffi_obj.c"
#include "cglob.c"
#include "lib_obj.c"
#include "cdlopen.c"
#include "commontypes.c"
#include "call_python.c"
static int init_ffi_lib(PyObject *m)
{
PyObject *x;
int i, res;
static char init_done = 0;
if (!init_done) {
if (init_global_types_dict(FFI_Type.tp_dict) < 0)
return -1;
FFIError = PyErr_NewException("ffi.error", NULL, NULL);
if (FFIError == NULL)
return -1;
if (PyDict_SetItemString(FFI_Type.tp_dict, "error", FFIError) < 0)
return -1;
if (PyDict_SetItemString(FFI_Type.tp_dict, "CType",
(PyObject *)&CTypeDescr_Type) < 0)
return -1;
if (PyDict_SetItemString(FFI_Type.tp_dict, "CData",
(PyObject *)&CData_Type) < 0)
return -1;
if (PyDict_SetItemString(FFI_Type.tp_dict, "buffer",
(PyObject *)&MiniBuffer_Type) < 0)
return -1;
for (i = 0; all_dlopen_flags[i].name != NULL; i++) {
x = PyInt_FromLong(all_dlopen_flags[i].value);
if (x == NULL)
return -1;
res = PyDict_SetItemString(FFI_Type.tp_dict,
all_dlopen_flags[i].name, x);
Py_DECREF(x);
if (res < 0)
return -1;
}
init_done = 1;
}
return 0;
}
static int make_included_tuples(char *module_name,
const char *const *ctx_includes,
PyObject **included_ffis,
PyObject **included_libs)
{
Py_ssize_t num = 0;
const char *const *p_include;
if (ctx_includes == NULL)
return 0;
for (p_include = ctx_includes; *p_include; p_include++) {
num++;
}
*included_ffis = PyTuple_New(num);
*included_libs = PyTuple_New(num);
if (*included_ffis == NULL || *included_libs == NULL)
goto error;
num = 0;
for (p_include = ctx_includes; *p_include; p_include++) {
PyObject *included_ffi, *included_lib;
PyObject *m = PyImport_ImportModule(*p_include);
if (m == NULL)
goto import_error;
included_ffi = PyObject_GetAttrString(m, "ffi");
PyTuple_SET_ITEM(*included_ffis, num, included_ffi);
included_lib = (included_ffi == NULL) ? NULL :
PyObject_GetAttrString(m, "lib");
PyTuple_SET_ITEM(*included_libs, num, included_lib);
Py_DECREF(m);
if (included_lib == NULL)
goto import_error;
if (!FFIObject_Check(included_ffi) ||
!LibObject_Check(included_lib))
goto import_error;
num++;
}
return 0;
import_error:
PyErr_Format(PyExc_ImportError,
"while loading %.200s: failed to import ffi, lib from %.200s",
module_name, *p_include);
error:
Py_XDECREF(*included_ffis); *included_ffis = NULL;
Py_XDECREF(*included_libs); *included_libs = NULL;
return -1;
}
static PyObject *_my_Py_InitModule(char *module_name)
{
#if PY_MAJOR_VERSION >= 3
struct PyModuleDef *module_def, local_module_def = {
PyModuleDef_HEAD_INIT,
module_name,
NULL,
-1,
NULL, NULL, NULL, NULL, NULL
};
/* note: the 'module_def' is allocated dynamically and leaks,
but anyway the C extension module can never be unloaded */
module_def = PyMem_Malloc(sizeof(struct PyModuleDef));
if (module_def == NULL)
return PyErr_NoMemory();
*module_def = local_module_def;
return PyModule_Create(module_def);
#else
return Py_InitModule(module_name, NULL);
#endif
}
static PyObject *b_init_cffi_1_0_external_module(PyObject *self, PyObject *arg)
{
PyObject *m, *modules_dict;
FFIObject *ffi;
LibObject *lib;
Py_ssize_t version, num_exports;
char *module_name, *exports, *module_name_with_lib;
void **raw;
const struct _cffi_type_context_s *ctx;
raw = (void **)PyLong_AsVoidPtr(arg);
if (raw == NULL)
return NULL;
module_name = (char *)raw[0];
version = (Py_ssize_t)raw[1];
exports = (char *)raw[2];
ctx = (const struct _cffi_type_context_s *)raw[3];
if (version < CFFI_VERSION_MIN || version > CFFI_VERSION_MAX) {
if (!PyErr_Occurred())
PyErr_Format(PyExc_ImportError,
"cffi extension module '%s' uses an unknown version tag %p. "
"This module might need a more recent version of cffi "
"than the one currently installed, which is %s",
module_name, (void *)version, CFFI_VERSION);
return NULL;
}
/* initialize the exports array */
num_exports = 25;
if (ctx->flags & 1) /* set to mean that 'extern "Python"' is used */
num_exports = 26;
if (version >= CFFI_VERSION_CHAR16CHAR32)
num_exports = 28;
memcpy(exports, (char *)cffi_exports, num_exports * sizeof(void *));
/* make the module object */
m = _my_Py_InitModule(module_name);
if (m == NULL)
return NULL;
/* build the FFI and Lib object inside this new module */
ffi = ffi_internal_new(&FFI_Type, ctx);
Py_XINCREF(ffi); /* make the ffi object really immortal */
if (ffi == NULL || PyModule_AddObject(m, "ffi", (PyObject *)ffi) < 0)
return NULL;
lib = lib_internal_new(ffi, module_name, NULL, 0);
if (lib == NULL || PyModule_AddObject(m, "lib", (PyObject *)lib) < 0)
return NULL;
if (make_included_tuples(module_name, ctx->includes,
&ffi->types_builder.included_ffis,
&lib->l_types_builder->included_libs) < 0)
return NULL;
/* add manually 'module_name.lib' in sys.modules:
see test_import_from_lib */
modules_dict = PySys_GetObject("modules");
if (!modules_dict)
return NULL;
module_name_with_lib = alloca(strlen(module_name) + 5);
strcpy(module_name_with_lib, module_name);
strcat(module_name_with_lib, ".lib");
if (PyDict_SetItemString(modules_dict, module_name_with_lib,
(PyObject *)lib) < 0)
return NULL;
#if PY_MAJOR_VERSION >= 3
/* add manually 'module_name' in sys.modules: it seems that
Py_InitModule() is not enough to do that */
if (PyDict_SetItemString(modules_dict, module_name, m) < 0)
return NULL;
#endif
return m;
}
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