xref: /vim-8.2.3635/src/if_python3.c (revision 58a8f170) 
1 /* vi:set ts=8 sts=4 sw=4 noet:
2  *
3  * VIM - Vi IMproved    by Bram Moolenaar
4  *
5  * Do ":help uganda"  in Vim to read copying and usage conditions.
6  * Do ":help credits" in Vim to see a list of people who contributed.
7  * See README.txt for an overview of the Vim source code.
8  */
9 /*
10  * Python extensions by Paul Moore.
11  * Changes for Unix by David Leonard.
12  *
13  * This consists of four parts:
14  * 1. Python interpreter main program
15  * 2. Python output stream: writes output via [e]msg().
16  * 3. Implementation of the Vim module for Python
17  * 4. Utility functions for handling the interface between Vim and Python.
18  */
19 
20 /*
21  * Roland Puntaier 2009/sept/16:
22  * Adaptations to support both python3.x and python2.x
23  */
24 
25 /* uncomment this if used with the debug version of python */
26 /* #define Py_DEBUG */
27 /* Note: most of time you can add -DPy_DEBUG to CFLAGS in place of uncommenting
28  */
29 /* uncomment this if used with the debug version of python, but without its
30  * allocator */
31 /* #define Py_DEBUG_NO_PYMALLOC */
32 
33 #include "vim.h"
34 
35 #include <limits.h>
36 
37 /* Python.h defines _POSIX_THREADS itself (if needed) */
38 #ifdef _POSIX_THREADS
39 # undef _POSIX_THREADS
40 #endif
41 
42 #if defined(_WIN32) && defined(HAVE_FCNTL_H)
43 # undef HAVE_FCNTL_H
44 #endif
45 
46 #ifdef _DEBUG
47 # undef _DEBUG
48 #endif
49 
50 #ifdef F_BLANK
51 # undef F_BLANK
52 #endif
53 
54 #ifdef HAVE_STRFTIME
55 # undef HAVE_STRFTIME
56 #endif
57 #ifdef HAVE_STRING_H
58 # undef HAVE_STRING_H
59 #endif
60 #ifdef HAVE_PUTENV
61 # undef HAVE_PUTENV
62 #endif
63 #ifdef HAVE_STDARG_H
64 # undef HAVE_STDARG_H   /* Python's config.h defines it as well. */
65 #endif
66 #ifdef _POSIX_C_SOURCE  /* defined in feature.h */
67 # undef _POSIX_C_SOURCE
68 #endif
69 #ifdef _XOPEN_SOURCE
70 # undef _XOPEN_SOURCE	/* pyconfig.h defines it as well. */
71 #endif
72 
73 #define PY_SSIZE_T_CLEAN
74 
75 #include <Python.h>
76 
77 #undef main /* Defined in python.h - aargh */
78 #undef HAVE_FCNTL_H /* Clash with os_win32.h */
79 
80 /* The "surrogateescape" error handler is new in Python 3.1 */
81 #if PY_VERSION_HEX >= 0x030100f0
82 # define CODEC_ERROR_HANDLER "surrogateescape"
83 #else
84 # define CODEC_ERROR_HANDLER NULL
85 #endif
86 
87 /* Python 3 does not support CObjects, always use Capsules */
88 #define PY_USE_CAPSULE
89 
90 #define PyInt Py_ssize_t
91 #ifndef PyString_Check
92 # define PyString_Check(obj) PyUnicode_Check(obj)
93 #endif
94 #define PyString_FromString(repr) \
95     PyUnicode_Decode(repr, STRLEN(repr), ENC_OPT, NULL)
96 #define PyString_FromFormat PyUnicode_FromFormat
97 #ifndef PyInt_Check
98 # define PyInt_Check(obj) PyLong_Check(obj)
99 #endif
100 #define PyInt_FromLong(i) PyLong_FromLong(i)
101 #define PyInt_AsLong(obj) PyLong_AsLong(obj)
102 #define Py_ssize_t_fmt "n"
103 #define Py_bytes_fmt "y"
104 
105 #define PyIntArgFunc	ssizeargfunc
106 #define PyIntObjArgProc	ssizeobjargproc
107 
108 /*
109  * PySlice_GetIndicesEx(): first argument type changed from PySliceObject
110  * to PyObject in Python 3.2 or later.
111  */
112 #if PY_VERSION_HEX >= 0x030200f0
113 typedef PyObject PySliceObject_T;
114 #else
115 typedef PySliceObject PySliceObject_T;
116 #endif
117 
118 #if defined(DYNAMIC_PYTHON3) || defined(PROTO)
119 
120 # ifndef WIN3264
121 #  include <dlfcn.h>
122 #  define FARPROC void*
123 #  define HINSTANCE void*
124 #  if defined(PY_NO_RTLD_GLOBAL) && defined(PY3_NO_RTLD_GLOBAL)
125 #   define load_dll(n) dlopen((n), RTLD_LAZY)
126 #  else
127 #   define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL)
128 #  endif
129 #  define close_dll dlclose
130 #  define symbol_from_dll dlsym
131 # else
132 #  define load_dll vimLoadLib
133 #  define close_dll FreeLibrary
134 #  define symbol_from_dll GetProcAddress
135 # endif
136 /*
137  * Wrapper defines
138  */
139 # undef PyArg_Parse
140 # define PyArg_Parse py3_PyArg_Parse
141 # undef PyArg_ParseTuple
142 # define PyArg_ParseTuple py3_PyArg_ParseTuple
143 # define PyMem_Free py3_PyMem_Free
144 # define PyMem_Malloc py3_PyMem_Malloc
145 # define PyDict_SetItemString py3_PyDict_SetItemString
146 # define PyErr_BadArgument py3_PyErr_BadArgument
147 # define PyErr_Clear py3_PyErr_Clear
148 # define PyErr_Format py3_PyErr_Format
149 # define PyErr_PrintEx py3_PyErr_PrintEx
150 # define PyErr_NoMemory py3_PyErr_NoMemory
151 # define PyErr_Occurred py3_PyErr_Occurred
152 # define PyErr_SetNone py3_PyErr_SetNone
153 # define PyErr_SetString py3_PyErr_SetString
154 # define PyErr_SetObject py3_PyErr_SetObject
155 # define PyErr_ExceptionMatches py3_PyErr_ExceptionMatches
156 # define PyEval_InitThreads py3_PyEval_InitThreads
157 # define PyEval_RestoreThread py3_PyEval_RestoreThread
158 # define PyEval_SaveThread py3_PyEval_SaveThread
159 # define PyGILState_Ensure py3_PyGILState_Ensure
160 # define PyGILState_Release py3_PyGILState_Release
161 # define PyLong_AsLong py3_PyLong_AsLong
162 # define PyLong_FromLong py3_PyLong_FromLong
163 # define PyList_GetItem py3_PyList_GetItem
164 # define PyList_Append py3_PyList_Append
165 # define PyList_Insert py3_PyList_Insert
166 # define PyList_New py3_PyList_New
167 # define PyList_SetItem py3_PyList_SetItem
168 # define PyList_Size py3_PyList_Size
169 # define PySequence_Check py3_PySequence_Check
170 # define PySequence_Size py3_PySequence_Size
171 # define PySequence_GetItem py3_PySequence_GetItem
172 # define PySequence_Fast py3_PySequence_Fast
173 # define PyTuple_Size py3_PyTuple_Size
174 # define PyTuple_GetItem py3_PyTuple_GetItem
175 # define PySlice_GetIndicesEx py3_PySlice_GetIndicesEx
176 # define PyImport_ImportModule py3_PyImport_ImportModule
177 # define PyObject_Init py3__PyObject_Init
178 # define PyDict_New py3_PyDict_New
179 # define PyDict_GetItemString py3_PyDict_GetItemString
180 # define PyDict_Next py3_PyDict_Next
181 # define PyMapping_Check py3_PyMapping_Check
182 # ifndef PyMapping_Keys
183 #  define PyMapping_Keys py3_PyMapping_Keys
184 # endif
185 # define PyIter_Next py3_PyIter_Next
186 # define PyObject_GetIter py3_PyObject_GetIter
187 # define PyObject_Repr py3_PyObject_Repr
188 # define PyObject_GetItem py3_PyObject_GetItem
189 # define PyObject_IsTrue py3_PyObject_IsTrue
190 # define PyModule_GetDict py3_PyModule_GetDict
191 #undef PyRun_SimpleString
192 # define PyRun_SimpleString py3_PyRun_SimpleString
193 #undef PyRun_String
194 # define PyRun_String py3_PyRun_String
195 # define PyObject_GetAttrString py3_PyObject_GetAttrString
196 # define PyObject_HasAttrString py3_PyObject_HasAttrString
197 # define PyObject_SetAttrString py3_PyObject_SetAttrString
198 # define PyObject_CallFunctionObjArgs py3_PyObject_CallFunctionObjArgs
199 # define _PyObject_CallFunction_SizeT py3__PyObject_CallFunction_SizeT
200 # define PyObject_Call py3_PyObject_Call
201 # define PyEval_GetLocals py3_PyEval_GetLocals
202 # define PyEval_GetGlobals py3_PyEval_GetGlobals
203 # define PySys_SetObject py3_PySys_SetObject
204 # define PySys_GetObject py3_PySys_GetObject
205 # define PySys_SetArgv py3_PySys_SetArgv
206 # define PyType_Ready py3_PyType_Ready
207 #undef Py_BuildValue
208 # define Py_BuildValue py3_Py_BuildValue
209 # define Py_SetPythonHome py3_Py_SetPythonHome
210 # define Py_Initialize py3_Py_Initialize
211 # define Py_Finalize py3_Py_Finalize
212 # define Py_IsInitialized py3_Py_IsInitialized
213 # define _Py_NoneStruct (*py3__Py_NoneStruct)
214 # define _Py_FalseStruct (*py3__Py_FalseStruct)
215 # define _Py_TrueStruct (*py3__Py_TrueStruct)
216 # define _PyObject_NextNotImplemented (*py3__PyObject_NextNotImplemented)
217 # define PyModule_AddObject py3_PyModule_AddObject
218 # define PyImport_AppendInittab py3_PyImport_AppendInittab
219 # define PyImport_AddModule py3_PyImport_AddModule
220 # if PY_VERSION_HEX >= 0x030300f0
221 #  undef _PyUnicode_AsString
222 #  define _PyUnicode_AsString py3_PyUnicode_AsUTF8
223 # else
224 #  define _PyUnicode_AsString py3__PyUnicode_AsString
225 # endif
226 # undef PyUnicode_AsEncodedString
227 # define PyUnicode_AsEncodedString py3_PyUnicode_AsEncodedString
228 # undef PyBytes_AsString
229 # define PyBytes_AsString py3_PyBytes_AsString
230 # ifndef PyBytes_AsStringAndSize
231 #  define PyBytes_AsStringAndSize py3_PyBytes_AsStringAndSize
232 # endif
233 # undef PyBytes_FromString
234 # define PyBytes_FromString py3_PyBytes_FromString
235 # define PyFloat_FromDouble py3_PyFloat_FromDouble
236 # define PyFloat_AsDouble py3_PyFloat_AsDouble
237 # define PyObject_GenericGetAttr py3_PyObject_GenericGetAttr
238 # define PyType_Type (*py3_PyType_Type)
239 # define PySlice_Type (*py3_PySlice_Type)
240 # define PyFloat_Type (*py3_PyFloat_Type)
241 # define PyNumber_Check (*py3_PyNumber_Check)
242 # define PyNumber_Long (*py3_PyNumber_Long)
243 # define PyBool_Type (*py3_PyBool_Type)
244 # define PyErr_NewException py3_PyErr_NewException
245 # ifdef Py_DEBUG
246 #  define _Py_NegativeRefcount py3__Py_NegativeRefcount
247 #  define _Py_RefTotal (*py3__Py_RefTotal)
248 #  define _Py_Dealloc py3__Py_Dealloc
249 #  define PyModule_Create2TraceRefs py3_PyModule_Create2TraceRefs
250 # else
251 #  define PyModule_Create2 py3_PyModule_Create2
252 # endif
253 # if defined(Py_DEBUG) && !defined(Py_DEBUG_NO_PYMALLOC)
254 #  define _PyObject_DebugMalloc py3__PyObject_DebugMalloc
255 #  define _PyObject_DebugFree py3__PyObject_DebugFree
256 # else
257 #  define PyObject_Malloc py3_PyObject_Malloc
258 #  define PyObject_Free py3_PyObject_Free
259 # endif
260 # define _PyObject_GC_New py3__PyObject_GC_New
261 # define PyObject_GC_Del py3_PyObject_GC_Del
262 # define PyObject_GC_UnTrack py3_PyObject_GC_UnTrack
263 # define PyType_GenericAlloc py3_PyType_GenericAlloc
264 # define PyType_GenericNew py3_PyType_GenericNew
265 # undef PyUnicode_FromString
266 # define PyUnicode_FromString py3_PyUnicode_FromString
267 # ifndef PyUnicode_FromFormat
268 #  define PyUnicode_FromFormat py3_PyUnicode_FromFormat
269 # else
270 #  define Py_UNICODE_USE_UCS_FUNCTIONS
271 #  ifdef Py_UNICODE_WIDE
272 #   define PyUnicodeUCS4_FromFormat py3_PyUnicodeUCS4_FromFormat
273 #  else
274 #   define PyUnicodeUCS2_FromFormat py3_PyUnicodeUCS2_FromFormat
275 #  endif
276 # endif
277 # undef PyUnicode_Decode
278 # define PyUnicode_Decode py3_PyUnicode_Decode
279 # define PyType_IsSubtype py3_PyType_IsSubtype
280 # define PyCapsule_New py3_PyCapsule_New
281 # define PyCapsule_GetPointer py3_PyCapsule_GetPointer
282 
283 # if defined(Py_DEBUG) && !defined(Py_DEBUG_NO_PYMALLOC)
284 #  undef PyObject_NEW
285 #  define PyObject_NEW(type, typeobj) \
286 ( (type *) PyObject_Init( \
287 	(PyObject *) _PyObject_DebugMalloc( _PyObject_SIZE(typeobj) ), (typeobj)) )
288 # endif
289 
290 /*
291  * Pointers for dynamic link
292  */
293 static int (*py3_PySys_SetArgv)(int, wchar_t **);
294 static void (*py3_Py_SetPythonHome)(wchar_t *home);
295 static void (*py3_Py_Initialize)(void);
296 static PyObject* (*py3_PyList_New)(Py_ssize_t size);
297 static PyGILState_STATE (*py3_PyGILState_Ensure)(void);
298 static void (*py3_PyGILState_Release)(PyGILState_STATE);
299 static int (*py3_PySys_SetObject)(char *, PyObject *);
300 static PyObject* (*py3_PySys_GetObject)(char *);
301 static int (*py3_PyList_Append)(PyObject *, PyObject *);
302 static int (*py3_PyList_Insert)(PyObject *, int, PyObject *);
303 static Py_ssize_t (*py3_PyList_Size)(PyObject *);
304 static int (*py3_PySequence_Check)(PyObject *);
305 static Py_ssize_t (*py3_PySequence_Size)(PyObject *);
306 static PyObject* (*py3_PySequence_GetItem)(PyObject *, Py_ssize_t);
307 static PyObject* (*py3_PySequence_Fast)(PyObject *, const char *);
308 static Py_ssize_t (*py3_PyTuple_Size)(PyObject *);
309 static PyObject* (*py3_PyTuple_GetItem)(PyObject *, Py_ssize_t);
310 static int (*py3_PyMapping_Check)(PyObject *);
311 static PyObject* (*py3_PyMapping_Keys)(PyObject *);
312 static int (*py3_PySlice_GetIndicesEx)(PySliceObject_T *r, Py_ssize_t length,
313 		     Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step,
314 		     Py_ssize_t *slicelen);
315 static PyObject* (*py3_PyErr_NoMemory)(void);
316 static void (*py3_Py_Finalize)(void);
317 static void (*py3_PyErr_SetString)(PyObject *, const char *);
318 static void (*py3_PyErr_SetObject)(PyObject *, PyObject *);
319 static int (*py3_PyErr_ExceptionMatches)(PyObject *);
320 static int (*py3_PyRun_SimpleString)(char *);
321 static PyObject* (*py3_PyRun_String)(char *, int, PyObject *, PyObject *);
322 static PyObject* (*py3_PyObject_GetAttrString)(PyObject *, const char *);
323 static int (*py3_PyObject_HasAttrString)(PyObject *, const char *);
324 static int (*py3_PyObject_SetAttrString)(PyObject *, const char *, PyObject *);
325 static PyObject* (*py3_PyObject_CallFunctionObjArgs)(PyObject *, ...);
326 static PyObject* (*py3__PyObject_CallFunction_SizeT)(PyObject *, char *, ...);
327 static PyObject* (*py3_PyObject_Call)(PyObject *, PyObject *, PyObject *);
328 static PyObject* (*py3_PyEval_GetGlobals)();
329 static PyObject* (*py3_PyEval_GetLocals)();
330 static PyObject* (*py3_PyList_GetItem)(PyObject *, Py_ssize_t);
331 static PyObject* (*py3_PyImport_ImportModule)(const char *);
332 static PyObject* (*py3_PyImport_AddModule)(const char *);
333 static int (*py3_PyErr_BadArgument)(void);
334 static PyObject* (*py3_PyErr_Occurred)(void);
335 static PyObject* (*py3_PyModule_GetDict)(PyObject *);
336 static int (*py3_PyList_SetItem)(PyObject *, Py_ssize_t, PyObject *);
337 static PyObject* (*py3_PyDict_GetItemString)(PyObject *, const char *);
338 static int (*py3_PyDict_Next)(PyObject *, Py_ssize_t *, PyObject **, PyObject **);
339 static PyObject* (*py3_PyLong_FromLong)(long);
340 static PyObject* (*py3_PyDict_New)(void);
341 static PyObject* (*py3_PyIter_Next)(PyObject *);
342 static PyObject* (*py3_PyObject_GetIter)(PyObject *);
343 static PyObject* (*py3_PyObject_Repr)(PyObject *);
344 static PyObject* (*py3_PyObject_GetItem)(PyObject *, PyObject *);
345 static int (*py3_PyObject_IsTrue)(PyObject *);
346 static PyObject* (*py3_Py_BuildValue)(char *, ...);
347 static int (*py3_PyType_Ready)(PyTypeObject *type);
348 static int (*py3_PyDict_SetItemString)(PyObject *dp, char *key, PyObject *item);
349 static PyObject* (*py3_PyUnicode_FromString)(const char *u);
350 # ifndef Py_UNICODE_USE_UCS_FUNCTIONS
351 static PyObject* (*py3_PyUnicode_FromFormat)(const char *u, ...);
352 # else
353 #  ifdef Py_UNICODE_WIDE
354 static PyObject* (*py3_PyUnicodeUCS4_FromFormat)(const char *u, ...);
355 #  else
356 static PyObject* (*py3_PyUnicodeUCS2_FromFormat)(const char *u, ...);
357 #  endif
358 # endif
359 static PyObject* (*py3_PyUnicode_Decode)(const char *u, Py_ssize_t size,
360 	const char *encoding, const char *errors);
361 static long (*py3_PyLong_AsLong)(PyObject *);
362 static void (*py3_PyErr_SetNone)(PyObject *);
363 static void (*py3_PyEval_InitThreads)(void);
364 static void(*py3_PyEval_RestoreThread)(PyThreadState *);
365 static PyThreadState*(*py3_PyEval_SaveThread)(void);
366 static int (*py3_PyArg_Parse)(PyObject *, char *, ...);
367 static int (*py3_PyArg_ParseTuple)(PyObject *, char *, ...);
368 static int (*py3_PyMem_Free)(void *);
369 static void* (*py3_PyMem_Malloc)(size_t);
370 static int (*py3_Py_IsInitialized)(void);
371 static void (*py3_PyErr_Clear)(void);
372 static PyObject* (*py3_PyErr_Format)(PyObject *, const char *, ...);
373 static void (*py3_PyErr_PrintEx)(int);
374 static PyObject*(*py3__PyObject_Init)(PyObject *, PyTypeObject *);
375 static iternextfunc py3__PyObject_NextNotImplemented;
376 static PyObject* py3__Py_NoneStruct;
377 static PyObject* py3__Py_FalseStruct;
378 static PyObject* py3__Py_TrueStruct;
379 static int (*py3_PyModule_AddObject)(PyObject *m, const char *name, PyObject *o);
380 static int (*py3_PyImport_AppendInittab)(const char *name, PyObject* (*initfunc)(void));
381 # if PY_VERSION_HEX >= 0x030300f0
382 static char* (*py3_PyUnicode_AsUTF8)(PyObject *unicode);
383 # else
384 static char* (*py3__PyUnicode_AsString)(PyObject *unicode);
385 # endif
386 static PyObject* (*py3_PyUnicode_AsEncodedString)(PyObject *unicode, const char* encoding, const char* errors);
387 static char* (*py3_PyBytes_AsString)(PyObject *bytes);
388 static int (*py3_PyBytes_AsStringAndSize)(PyObject *bytes, char **buffer, Py_ssize_t *length);
389 static PyObject* (*py3_PyBytes_FromString)(char *str);
390 static PyObject* (*py3_PyFloat_FromDouble)(double num);
391 static double (*py3_PyFloat_AsDouble)(PyObject *);
392 static PyObject* (*py3_PyObject_GenericGetAttr)(PyObject *obj, PyObject *name);
393 static PyObject* (*py3_PyType_GenericAlloc)(PyTypeObject *type, Py_ssize_t nitems);
394 static PyObject* (*py3_PyType_GenericNew)(PyTypeObject *type, PyObject *args, PyObject *kwds);
395 static PyTypeObject* py3_PyType_Type;
396 static PyTypeObject* py3_PySlice_Type;
397 static PyTypeObject* py3_PyFloat_Type;
398 static PyTypeObject* py3_PyBool_Type;
399 static int (*py3_PyNumber_Check)(PyObject *);
400 static PyObject* (*py3_PyNumber_Long)(PyObject *);
401 static PyObject* (*py3_PyErr_NewException)(char *name, PyObject *base, PyObject *dict);
402 static PyObject* (*py3_PyCapsule_New)(void *, char *, PyCapsule_Destructor);
403 static void* (*py3_PyCapsule_GetPointer)(PyObject *, char *);
404 # ifdef Py_DEBUG
405 static void (*py3__Py_NegativeRefcount)(const char *fname, int lineno, PyObject *op);
406 static Py_ssize_t* py3__Py_RefTotal;
407 static void (*py3__Py_Dealloc)(PyObject *obj);
408 static PyObject* (*py3_PyModule_Create2TraceRefs)(struct PyModuleDef* module, int module_api_version);
409 # else
410 static PyObject* (*py3_PyModule_Create2)(struct PyModuleDef* module, int module_api_version);
411 # endif
412 # if defined(Py_DEBUG) && !defined(Py_DEBUG_NO_PYMALLOC)
413 static void (*py3__PyObject_DebugFree)(void*);
414 static void* (*py3__PyObject_DebugMalloc)(size_t);
415 # else
416 static void (*py3_PyObject_Free)(void*);
417 static void* (*py3_PyObject_Malloc)(size_t);
418 # endif
419 static PyObject*(*py3__PyObject_GC_New)(PyTypeObject *);
420 static void(*py3_PyObject_GC_Del)(void *);
421 static void(*py3_PyObject_GC_UnTrack)(void *);
422 static int (*py3_PyType_IsSubtype)(PyTypeObject *, PyTypeObject *);
423 
424 static HINSTANCE hinstPy3 = 0; /* Instance of python.dll */
425 
426 /* Imported exception objects */
427 static PyObject *p3imp_PyExc_AttributeError;
428 static PyObject *p3imp_PyExc_IndexError;
429 static PyObject *p3imp_PyExc_KeyError;
430 static PyObject *p3imp_PyExc_KeyboardInterrupt;
431 static PyObject *p3imp_PyExc_TypeError;
432 static PyObject *p3imp_PyExc_ValueError;
433 static PyObject *p3imp_PyExc_SystemExit;
434 static PyObject *p3imp_PyExc_RuntimeError;
435 static PyObject *p3imp_PyExc_ImportError;
436 static PyObject *p3imp_PyExc_OverflowError;
437 
438 # define PyExc_AttributeError p3imp_PyExc_AttributeError
439 # define PyExc_IndexError p3imp_PyExc_IndexError
440 # define PyExc_KeyError p3imp_PyExc_KeyError
441 # define PyExc_KeyboardInterrupt p3imp_PyExc_KeyboardInterrupt
442 # define PyExc_TypeError p3imp_PyExc_TypeError
443 # define PyExc_ValueError p3imp_PyExc_ValueError
444 # define PyExc_SystemExit p3imp_PyExc_SystemExit
445 # define PyExc_RuntimeError p3imp_PyExc_RuntimeError
446 # define PyExc_ImportError p3imp_PyExc_ImportError
447 # define PyExc_OverflowError p3imp_PyExc_OverflowError
448 
449 /*
450  * Table of name to function pointer of python.
451  */
452 # define PYTHON_PROC FARPROC
453 static struct
454 {
455     char *name;
456     PYTHON_PROC *ptr;
457 } py3_funcname_table[] =
458 {
459     {"PySys_SetArgv", (PYTHON_PROC*)&py3_PySys_SetArgv},
460     {"Py_SetPythonHome", (PYTHON_PROC*)&py3_Py_SetPythonHome},
461     {"Py_Initialize", (PYTHON_PROC*)&py3_Py_Initialize},
462     {"_PyArg_ParseTuple_SizeT", (PYTHON_PROC*)&py3_PyArg_ParseTuple},
463     {"_Py_BuildValue_SizeT", (PYTHON_PROC*)&py3_Py_BuildValue},
464     {"PyMem_Free", (PYTHON_PROC*)&py3_PyMem_Free},
465     {"PyMem_Malloc", (PYTHON_PROC*)&py3_PyMem_Malloc},
466     {"PyList_New", (PYTHON_PROC*)&py3_PyList_New},
467     {"PyGILState_Ensure", (PYTHON_PROC*)&py3_PyGILState_Ensure},
468     {"PyGILState_Release", (PYTHON_PROC*)&py3_PyGILState_Release},
469     {"PySys_SetObject", (PYTHON_PROC*)&py3_PySys_SetObject},
470     {"PySys_GetObject", (PYTHON_PROC*)&py3_PySys_GetObject},
471     {"PyList_Append", (PYTHON_PROC*)&py3_PyList_Append},
472     {"PyList_Insert", (PYTHON_PROC*)&py3_PyList_Insert},
473     {"PyList_Size", (PYTHON_PROC*)&py3_PyList_Size},
474     {"PySequence_Check", (PYTHON_PROC*)&py3_PySequence_Check},
475     {"PySequence_Size", (PYTHON_PROC*)&py3_PySequence_Size},
476     {"PySequence_GetItem", (PYTHON_PROC*)&py3_PySequence_GetItem},
477     {"PySequence_Fast", (PYTHON_PROC*)&py3_PySequence_Fast},
478     {"PyTuple_Size", (PYTHON_PROC*)&py3_PyTuple_Size},
479     {"PyTuple_GetItem", (PYTHON_PROC*)&py3_PyTuple_GetItem},
480     {"PySlice_GetIndicesEx", (PYTHON_PROC*)&py3_PySlice_GetIndicesEx},
481     {"PyErr_NoMemory", (PYTHON_PROC*)&py3_PyErr_NoMemory},
482     {"Py_Finalize", (PYTHON_PROC*)&py3_Py_Finalize},
483     {"PyErr_SetString", (PYTHON_PROC*)&py3_PyErr_SetString},
484     {"PyErr_SetObject", (PYTHON_PROC*)&py3_PyErr_SetObject},
485     {"PyErr_ExceptionMatches", (PYTHON_PROC*)&py3_PyErr_ExceptionMatches},
486     {"PyRun_SimpleString", (PYTHON_PROC*)&py3_PyRun_SimpleString},
487     {"PyRun_String", (PYTHON_PROC*)&py3_PyRun_String},
488     {"PyObject_GetAttrString", (PYTHON_PROC*)&py3_PyObject_GetAttrString},
489     {"PyObject_HasAttrString", (PYTHON_PROC*)&py3_PyObject_HasAttrString},
490     {"PyObject_SetAttrString", (PYTHON_PROC*)&py3_PyObject_SetAttrString},
491     {"PyObject_CallFunctionObjArgs", (PYTHON_PROC*)&py3_PyObject_CallFunctionObjArgs},
492     {"_PyObject_CallFunction_SizeT", (PYTHON_PROC*)&py3__PyObject_CallFunction_SizeT},
493     {"PyObject_Call", (PYTHON_PROC*)&py3_PyObject_Call},
494     {"PyEval_GetGlobals", (PYTHON_PROC*)&py3_PyEval_GetGlobals},
495     {"PyEval_GetLocals", (PYTHON_PROC*)&py3_PyEval_GetLocals},
496     {"PyList_GetItem", (PYTHON_PROC*)&py3_PyList_GetItem},
497     {"PyImport_ImportModule", (PYTHON_PROC*)&py3_PyImport_ImportModule},
498     {"PyImport_AddModule", (PYTHON_PROC*)&py3_PyImport_AddModule},
499     {"PyErr_BadArgument", (PYTHON_PROC*)&py3_PyErr_BadArgument},
500     {"PyErr_Occurred", (PYTHON_PROC*)&py3_PyErr_Occurred},
501     {"PyModule_GetDict", (PYTHON_PROC*)&py3_PyModule_GetDict},
502     {"PyList_SetItem", (PYTHON_PROC*)&py3_PyList_SetItem},
503     {"PyDict_GetItemString", (PYTHON_PROC*)&py3_PyDict_GetItemString},
504     {"PyDict_Next", (PYTHON_PROC*)&py3_PyDict_Next},
505     {"PyMapping_Check", (PYTHON_PROC*)&py3_PyMapping_Check},
506     {"PyMapping_Keys", (PYTHON_PROC*)&py3_PyMapping_Keys},
507     {"PyIter_Next", (PYTHON_PROC*)&py3_PyIter_Next},
508     {"PyObject_GetIter", (PYTHON_PROC*)&py3_PyObject_GetIter},
509     {"PyObject_Repr", (PYTHON_PROC*)&py3_PyObject_Repr},
510     {"PyObject_GetItem", (PYTHON_PROC*)&py3_PyObject_GetItem},
511     {"PyObject_IsTrue", (PYTHON_PROC*)&py3_PyObject_IsTrue},
512     {"PyLong_FromLong", (PYTHON_PROC*)&py3_PyLong_FromLong},
513     {"PyDict_New", (PYTHON_PROC*)&py3_PyDict_New},
514     {"PyType_Ready", (PYTHON_PROC*)&py3_PyType_Ready},
515     {"PyDict_SetItemString", (PYTHON_PROC*)&py3_PyDict_SetItemString},
516     {"PyLong_AsLong", (PYTHON_PROC*)&py3_PyLong_AsLong},
517     {"PyErr_SetNone", (PYTHON_PROC*)&py3_PyErr_SetNone},
518     {"PyEval_InitThreads", (PYTHON_PROC*)&py3_PyEval_InitThreads},
519     {"PyEval_RestoreThread", (PYTHON_PROC*)&py3_PyEval_RestoreThread},
520     {"PyEval_SaveThread", (PYTHON_PROC*)&py3_PyEval_SaveThread},
521     {"_PyArg_Parse_SizeT", (PYTHON_PROC*)&py3_PyArg_Parse},
522     {"Py_IsInitialized", (PYTHON_PROC*)&py3_Py_IsInitialized},
523     {"_PyObject_NextNotImplemented", (PYTHON_PROC*)&py3__PyObject_NextNotImplemented},
524     {"_Py_NoneStruct", (PYTHON_PROC*)&py3__Py_NoneStruct},
525     {"_Py_FalseStruct", (PYTHON_PROC*)&py3__Py_FalseStruct},
526     {"_Py_TrueStruct", (PYTHON_PROC*)&py3__Py_TrueStruct},
527     {"PyErr_Clear", (PYTHON_PROC*)&py3_PyErr_Clear},
528     {"PyErr_Format", (PYTHON_PROC*)&py3_PyErr_Format},
529     {"PyErr_PrintEx", (PYTHON_PROC*)&py3_PyErr_PrintEx},
530     {"PyObject_Init", (PYTHON_PROC*)&py3__PyObject_Init},
531     {"PyModule_AddObject", (PYTHON_PROC*)&py3_PyModule_AddObject},
532     {"PyImport_AppendInittab", (PYTHON_PROC*)&py3_PyImport_AppendInittab},
533 # if PY_VERSION_HEX >= 0x030300f0
534     {"PyUnicode_AsUTF8", (PYTHON_PROC*)&py3_PyUnicode_AsUTF8},
535 # else
536     {"_PyUnicode_AsString", (PYTHON_PROC*)&py3__PyUnicode_AsString},
537 # endif
538 # ifndef Py_UNICODE_USE_UCS_FUNCTIONS
539     {"PyUnicode_FromFormat", (PYTHON_PROC*)&py3_PyUnicode_FromFormat},
540 # else
541 #  ifdef Py_UNICODE_WIDE
542     {"PyUnicodeUCS4_FromFormat", (PYTHON_PROC*)&py3_PyUnicodeUCS4_FromFormat},
543 #  else
544     {"PyUnicodeUCS2_FromFormat", (PYTHON_PROC*)&py3_PyUnicodeUCS2_FromFormat},
545 #  endif
546 # endif
547     {"PyBytes_AsString", (PYTHON_PROC*)&py3_PyBytes_AsString},
548     {"PyBytes_AsStringAndSize", (PYTHON_PROC*)&py3_PyBytes_AsStringAndSize},
549     {"PyBytes_FromString", (PYTHON_PROC*)&py3_PyBytes_FromString},
550     {"PyFloat_FromDouble", (PYTHON_PROC*)&py3_PyFloat_FromDouble},
551     {"PyFloat_AsDouble", (PYTHON_PROC*)&py3_PyFloat_AsDouble},
552     {"PyObject_GenericGetAttr", (PYTHON_PROC*)&py3_PyObject_GenericGetAttr},
553     {"PyType_GenericAlloc", (PYTHON_PROC*)&py3_PyType_GenericAlloc},
554     {"PyType_GenericNew", (PYTHON_PROC*)&py3_PyType_GenericNew},
555     {"PyType_Type", (PYTHON_PROC*)&py3_PyType_Type},
556     {"PySlice_Type", (PYTHON_PROC*)&py3_PySlice_Type},
557     {"PyFloat_Type", (PYTHON_PROC*)&py3_PyFloat_Type},
558     {"PyBool_Type", (PYTHON_PROC*)&py3_PyBool_Type},
559     {"PyNumber_Check", (PYTHON_PROC*)&py3_PyNumber_Check},
560     {"PyNumber_Long", (PYTHON_PROC*)&py3_PyNumber_Long},
561     {"PyErr_NewException", (PYTHON_PROC*)&py3_PyErr_NewException},
562 # ifdef Py_DEBUG
563     {"_Py_NegativeRefcount", (PYTHON_PROC*)&py3__Py_NegativeRefcount},
564     {"_Py_RefTotal", (PYTHON_PROC*)&py3__Py_RefTotal},
565     {"_Py_Dealloc", (PYTHON_PROC*)&py3__Py_Dealloc},
566     {"PyModule_Create2TraceRefs", (PYTHON_PROC*)&py3_PyModule_Create2TraceRefs},
567 # else
568     {"PyModule_Create2", (PYTHON_PROC*)&py3_PyModule_Create2},
569 # endif
570 # if defined(Py_DEBUG) && !defined(Py_DEBUG_NO_PYMALLOC)
571     {"_PyObject_DebugFree", (PYTHON_PROC*)&py3__PyObject_DebugFree},
572     {"_PyObject_DebugMalloc", (PYTHON_PROC*)&py3__PyObject_DebugMalloc},
573 # else
574     {"PyObject_Malloc", (PYTHON_PROC*)&py3_PyObject_Malloc},
575     {"PyObject_Free", (PYTHON_PROC*)&py3_PyObject_Free},
576 # endif
577     {"_PyObject_GC_New", (PYTHON_PROC*)&py3__PyObject_GC_New},
578     {"PyObject_GC_Del", (PYTHON_PROC*)&py3_PyObject_GC_Del},
579     {"PyObject_GC_UnTrack", (PYTHON_PROC*)&py3_PyObject_GC_UnTrack},
580     {"PyType_IsSubtype", (PYTHON_PROC*)&py3_PyType_IsSubtype},
581     {"PyCapsule_New", (PYTHON_PROC*)&py3_PyCapsule_New},
582     {"PyCapsule_GetPointer", (PYTHON_PROC*)&py3_PyCapsule_GetPointer},
583     {"", NULL},
584 };
585 
586 /*
587  * Free python.dll
588  */
589     static void
590 end_dynamic_python3(void)
591 {
592     if (hinstPy3 != 0)
593     {
594 	close_dll(hinstPy3);
595 	hinstPy3 = 0;
596     }
597 }
598 
599 /*
600  * Load library and get all pointers.
601  * Parameter 'libname' provides name of DLL.
602  * Return OK or FAIL.
603  */
604     static int
605 py3_runtime_link_init(char *libname, int verbose)
606 {
607     int i;
608     void *ucs_from_string, *ucs_decode, *ucs_as_encoded_string;
609 
610 # if !(defined(PY_NO_RTLD_GLOBAL) && defined(PY3_NO_RTLD_GLOBAL)) && defined(UNIX) && defined(FEAT_PYTHON)
611     /* Can't have Python and Python3 loaded at the same time.
612      * It cause a crash, because RTLD_GLOBAL is needed for
613      * standard C extension libraries of one or both python versions. */
614     if (python_loaded())
615     {
616 	if (verbose)
617 	    EMSG(_("E837: This Vim cannot execute :py3 after using :python"));
618 	return FAIL;
619     }
620 # endif
621 
622     if (hinstPy3 != 0)
623 	return OK;
624     hinstPy3 = load_dll(libname);
625 
626     if (!hinstPy3)
627     {
628 	if (verbose)
629 	    EMSG2(_(e_loadlib), libname);
630 	return FAIL;
631     }
632 
633     for (i = 0; py3_funcname_table[i].ptr; ++i)
634     {
635 	if ((*py3_funcname_table[i].ptr = symbol_from_dll(hinstPy3,
636 			py3_funcname_table[i].name)) == NULL)
637 	{
638 	    close_dll(hinstPy3);
639 	    hinstPy3 = 0;
640 	    if (verbose)
641 		EMSG2(_(e_loadfunc), py3_funcname_table[i].name);
642 	    return FAIL;
643 	}
644     }
645 
646     /* Load unicode functions separately as only the ucs2 or the ucs4 functions
647      * will be present in the library. */
648 # if PY_VERSION_HEX >= 0x030300f0
649     ucs_from_string = symbol_from_dll(hinstPy3, "PyUnicode_FromString");
650     ucs_decode = symbol_from_dll(hinstPy3, "PyUnicode_Decode");
651     ucs_as_encoded_string = symbol_from_dll(hinstPy3,
652 	    "PyUnicode_AsEncodedString");
653 # else
654     ucs_from_string = symbol_from_dll(hinstPy3, "PyUnicodeUCS2_FromString");
655     ucs_decode = symbol_from_dll(hinstPy3,
656 	    "PyUnicodeUCS2_Decode");
657     ucs_as_encoded_string = symbol_from_dll(hinstPy3,
658 	    "PyUnicodeUCS2_AsEncodedString");
659     if (!ucs_from_string || !ucs_decode || !ucs_as_encoded_string)
660     {
661 	ucs_from_string = symbol_from_dll(hinstPy3,
662 		"PyUnicodeUCS4_FromString");
663 	ucs_decode = symbol_from_dll(hinstPy3,
664 		"PyUnicodeUCS4_Decode");
665 	ucs_as_encoded_string = symbol_from_dll(hinstPy3,
666 		"PyUnicodeUCS4_AsEncodedString");
667     }
668 # endif
669     if (ucs_from_string && ucs_decode && ucs_as_encoded_string)
670     {
671 	py3_PyUnicode_FromString = ucs_from_string;
672 	py3_PyUnicode_Decode = ucs_decode;
673 	py3_PyUnicode_AsEncodedString = ucs_as_encoded_string;
674     }
675     else
676     {
677 	close_dll(hinstPy3);
678 	hinstPy3 = 0;
679 	if (verbose)
680 	    EMSG2(_(e_loadfunc), "PyUnicode_UCSX_*");
681 	return FAIL;
682     }
683 
684     return OK;
685 }
686 
687 /*
688  * If python is enabled (there is installed python on Windows system) return
689  * TRUE, else FALSE.
690  */
691     int
692 python3_enabled(int verbose)
693 {
694     return py3_runtime_link_init((char *)p_py3dll, verbose) == OK;
695 }
696 
697 /* Load the standard Python exceptions - don't import the symbols from the
698  * DLL, as this can cause errors (importing data symbols is not reliable).
699  */
700 static void get_py3_exceptions(void);
701 
702     static void
703 get_py3_exceptions(void)
704 {
705     PyObject *exmod = PyImport_ImportModule("builtins");
706     PyObject *exdict = PyModule_GetDict(exmod);
707     p3imp_PyExc_AttributeError = PyDict_GetItemString(exdict, "AttributeError");
708     p3imp_PyExc_IndexError = PyDict_GetItemString(exdict, "IndexError");
709     p3imp_PyExc_KeyError = PyDict_GetItemString(exdict, "KeyError");
710     p3imp_PyExc_KeyboardInterrupt = PyDict_GetItemString(exdict, "KeyboardInterrupt");
711     p3imp_PyExc_TypeError = PyDict_GetItemString(exdict, "TypeError");
712     p3imp_PyExc_ValueError = PyDict_GetItemString(exdict, "ValueError");
713     p3imp_PyExc_SystemExit = PyDict_GetItemString(exdict, "SystemExit");
714     p3imp_PyExc_RuntimeError = PyDict_GetItemString(exdict, "RuntimeError");
715     p3imp_PyExc_ImportError = PyDict_GetItemString(exdict, "ImportError");
716     p3imp_PyExc_OverflowError = PyDict_GetItemString(exdict, "OverflowError");
717     Py_XINCREF(p3imp_PyExc_AttributeError);
718     Py_XINCREF(p3imp_PyExc_IndexError);
719     Py_XINCREF(p3imp_PyExc_KeyError);
720     Py_XINCREF(p3imp_PyExc_KeyboardInterrupt);
721     Py_XINCREF(p3imp_PyExc_TypeError);
722     Py_XINCREF(p3imp_PyExc_ValueError);
723     Py_XINCREF(p3imp_PyExc_SystemExit);
724     Py_XINCREF(p3imp_PyExc_RuntimeError);
725     Py_XINCREF(p3imp_PyExc_ImportError);
726     Py_XINCREF(p3imp_PyExc_OverflowError);
727     Py_XDECREF(exmod);
728 }
729 #endif /* DYNAMIC_PYTHON3 */
730 
731 static int py3initialised = 0;
732 #define PYINITIALISED py3initialised
733 static int python_end_called = FALSE;
734 
735 #define DESTRUCTOR_FINISH(self) Py_TYPE(self)->tp_free((PyObject*)self)
736 
737 #define WIN_PYTHON_REF(win) win->w_python3_ref
738 #define BUF_PYTHON_REF(buf) buf->b_python3_ref
739 #define TAB_PYTHON_REF(tab) tab->tp_python3_ref
740 
741     static void
742 call_PyObject_Free(void *p)
743 {
744 #if defined(Py_DEBUG) && !defined(Py_DEBUG_NO_PYMALLOC)
745     _PyObject_DebugFree(p);
746 #else
747     PyObject_Free(p);
748 #endif
749 }
750 
751     static PyObject *
752 call_PyType_GenericNew(PyTypeObject *type, PyObject *args, PyObject *kwds)
753 {
754     return PyType_GenericNew(type,args,kwds);
755 }
756 
757     static PyObject *
758 call_PyType_GenericAlloc(PyTypeObject *type, Py_ssize_t nitems)
759 {
760     return PyType_GenericAlloc(type,nitems);
761 }
762 
763 static PyObject *OutputGetattro(PyObject *, PyObject *);
764 static int OutputSetattro(PyObject *, PyObject *, PyObject *);
765 static PyObject *BufferGetattro(PyObject *, PyObject *);
766 static int BufferSetattro(PyObject *, PyObject *, PyObject *);
767 static PyObject *TabPageGetattro(PyObject *, PyObject *);
768 static PyObject *WindowGetattro(PyObject *, PyObject *);
769 static int WindowSetattro(PyObject *, PyObject *, PyObject *);
770 static PyObject *RangeGetattro(PyObject *, PyObject *);
771 static PyObject *CurrentGetattro(PyObject *, PyObject *);
772 static int CurrentSetattro(PyObject *, PyObject *, PyObject *);
773 static PyObject *DictionaryGetattro(PyObject *, PyObject *);
774 static int DictionarySetattro(PyObject *, PyObject *, PyObject *);
775 static PyObject *ListGetattro(PyObject *, PyObject *);
776 static int ListSetattro(PyObject *, PyObject *, PyObject *);
777 static PyObject *FunctionGetattro(PyObject *, PyObject *);
778 
779 static PyObject *VimPathHook(PyObject *, PyObject *);
780 
781 static struct PyModuleDef vimmodule;
782 
783 #define PY_CAN_RECURSE
784 
785 /*
786  * Include the code shared with if_python.c
787  */
788 #include "if_py_both.h"
789 
790 #define GET_ATTR_STRING(name, nameobj) \
791     char	*name = ""; \
792     if (PyUnicode_Check(nameobj)) \
793 	name = _PyUnicode_AsString(nameobj)
794 
795 #define PY3OBJ_DELETED(obj) (obj->ob_base.ob_refcnt<=0)
796 
797 /******************************************************
798  * Internal function prototypes.
799  */
800 
801 static PyObject *Py3Init_vim(void);
802 
803 /******************************************************
804  * 1. Python interpreter main program.
805  */
806 
807     void
808 python3_end(void)
809 {
810     static int recurse = 0;
811 
812     /* If a crash occurs while doing this, don't try again. */
813     if (recurse != 0)
814 	return;
815 
816     python_end_called = TRUE;
817     ++recurse;
818 
819 #ifdef DYNAMIC_PYTHON3
820     if (hinstPy3)
821 #endif
822     if (Py_IsInitialized())
823     {
824 	// acquire lock before finalizing
825 	PyGILState_Ensure();
826 
827 	Py_Finalize();
828     }
829 
830 #ifdef DYNAMIC_PYTHON3
831     end_dynamic_python3();
832 #endif
833 
834     --recurse;
835 }
836 
837 #if (defined(DYNAMIC_PYTHON3) && defined(DYNAMIC_PYTHON) && defined(FEAT_PYTHON) && defined(UNIX)) || defined(PROTO)
838     int
839 python3_loaded(void)
840 {
841     return (hinstPy3 != 0);
842 }
843 #endif
844 
845     static int
846 Python3_Init(void)
847 {
848     if (!py3initialised)
849     {
850 #ifdef DYNAMIC_PYTHON3
851 	if (!python3_enabled(TRUE))
852 	{
853 	    EMSG(_("E263: Sorry, this command is disabled, the Python library could not be loaded."));
854 	    goto fail;
855 	}
856 #endif
857 
858 	init_structs();
859 
860 
861 #ifdef PYTHON3_HOME
862 # ifdef DYNAMIC_PYTHON3
863 	if (mch_getenv((char_u *)"PYTHONHOME") == NULL)
864 # endif
865 	    Py_SetPythonHome(PYTHON3_HOME);
866 #endif
867 
868 	PyImport_AppendInittab("vim", Py3Init_vim);
869 
870 	Py_Initialize();
871 
872 	/* Initialise threads, and below save the state using
873 	 * PyEval_SaveThread.  Without the call to PyEval_SaveThread, thread
874 	 * specific state (such as the system trace hook), will be lost
875 	 * between invocations of Python code. */
876 	PyEval_InitThreads();
877 #ifdef DYNAMIC_PYTHON3
878 	get_py3_exceptions();
879 #endif
880 
881 	if (PythonIO_Init_io())
882 	    goto fail;
883 
884 	globals = PyModule_GetDict(PyImport_AddModule("__main__"));
885 
886 	/* Remove the element from sys.path that was added because of our
887 	 * argv[0] value in Py3Init_vim().  Previously we used an empty
888 	 * string, but depending on the OS we then get an empty entry or
889 	 * the current directory in sys.path.
890 	 * Only after vim has been imported, the element does exist in
891 	 * sys.path.
892 	 */
893 	PyRun_SimpleString("import vim; import sys; sys.path = list(filter(lambda x: not x.endswith('must>not&exist'), sys.path))");
894 
895 	/* lock is created and acquired in PyEval_InitThreads() and thread
896 	 * state is created in Py_Initialize()
897 	 * there _PyGILState_NoteThreadState() also sets gilcounter to 1
898 	 * (python must have threads enabled!)
899 	 * so the following does both: unlock GIL and save thread state in TLS
900 	 * without deleting thread state
901 	 */
902 	PyEval_SaveThread();
903 
904 	py3initialised = 1;
905     }
906 
907     return 0;
908 
909 fail:
910     /* We call PythonIO_Flush() here to print any Python errors.
911      * This is OK, as it is possible to call this function even
912      * if PythonIO_Init_io() has not completed successfully (it will
913      * not do anything in this case).
914      */
915     PythonIO_Flush();
916     return -1;
917 }
918 
919 /*
920  * External interface
921  */
922     static void
923 DoPyCommand(const char *cmd, rangeinitializer init_range, runner run, void *arg)
924 {
925 #if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
926     char		*saved_locale;
927 #endif
928     PyObject		*cmdstr;
929     PyObject		*cmdbytes;
930     PyGILState_STATE	pygilstate;
931 
932     if (python_end_called)
933 	goto theend;
934 
935     if (Python3_Init())
936 	goto theend;
937 
938     init_range(arg);
939 
940     Python_Release_Vim();	    /* leave vim */
941 
942 #if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
943     /* Python only works properly when the LC_NUMERIC locale is "C". */
944     saved_locale = setlocale(LC_NUMERIC, NULL);
945     if (saved_locale == NULL || STRCMP(saved_locale, "C") == 0)
946 	saved_locale = NULL;
947     else
948     {
949 	/* Need to make a copy, value may change when setting new locale. */
950 	saved_locale = (char *)vim_strsave((char_u *)saved_locale);
951 	(void)setlocale(LC_NUMERIC, "C");
952     }
953 #endif
954 
955     pygilstate = PyGILState_Ensure();
956 
957     /* PyRun_SimpleString expects a UTF-8 string. Wrong encoding may cause
958      * SyntaxError (unicode error). */
959     cmdstr = PyUnicode_Decode(cmd, strlen(cmd),
960 					(char *)ENC_OPT, CODEC_ERROR_HANDLER);
961     cmdbytes = PyUnicode_AsEncodedString(cmdstr, "utf-8", CODEC_ERROR_HANDLER);
962     Py_XDECREF(cmdstr);
963 
964     run(PyBytes_AsString(cmdbytes), arg, &pygilstate);
965     Py_XDECREF(cmdbytes);
966 
967     PyGILState_Release(pygilstate);
968 
969 #if defined(HAVE_LOCALE_H) || defined(X_LOCALE)
970     if (saved_locale != NULL)
971     {
972 	(void)setlocale(LC_NUMERIC, saved_locale);
973 	vim_free(saved_locale);
974     }
975 #endif
976 
977     Python_Lock_Vim();		    /* enter vim */
978     PythonIO_Flush();
979 
980 theend:
981     return;	    /* keeps lint happy */
982 }
983 
984 /*
985  * ":py3"
986  */
987     void
988 ex_py3(exarg_T *eap)
989 {
990     char_u *script;
991 
992     if (p_pyx == 0)
993 	p_pyx = 3;
994 
995     script = script_get(eap, eap->arg);
996     if (!eap->skip)
997     {
998 	DoPyCommand(script == NULL ? (char *) eap->arg : (char *) script,
999 		(rangeinitializer) init_range_cmd,
1000 		(runner) run_cmd,
1001 		(void *) eap);
1002     }
1003     vim_free(script);
1004 }
1005 
1006 #define BUFFER_SIZE 2048
1007 
1008 /*
1009  * ":py3file"
1010  */
1011     void
1012 ex_py3file(exarg_T *eap)
1013 {
1014     static char buffer[BUFFER_SIZE];
1015     const char *file;
1016     char *p;
1017     int i;
1018 
1019     if (p_pyx == 0)
1020 	p_pyx = 3;
1021 
1022     /* Have to do it like this. PyRun_SimpleFile requires you to pass a
1023      * stdio file pointer, but Vim and the Python DLL are compiled with
1024      * different options under Windows, meaning that stdio pointers aren't
1025      * compatible between the two. Yuk.
1026      *
1027      * construct: exec(compile(open('a_filename', 'rb').read(), 'a_filename', 'exec'))
1028      *
1029      * Using bytes so that Python can detect the source encoding as it normally
1030      * does. The doc does not say "compile" accept bytes, though.
1031      *
1032      * We need to escape any backslashes or single quotes in the file name, so that
1033      * Python won't mangle the file name.
1034      */
1035 
1036     strcpy(buffer, "exec(compile(open('");
1037     p = buffer + 19; /* size of "exec(compile(open('" */
1038 
1039     for (i=0; i<2; ++i)
1040     {
1041 	file = (char *)eap->arg;
1042 	while (*file && p < buffer + (BUFFER_SIZE - 3))
1043 	{
1044 	    if (*file == '\\' || *file == '\'')
1045 		*p++ = '\\';
1046 	    *p++ = *file++;
1047 	}
1048 	/* If we didn't finish the file name, we hit a buffer overflow */
1049 	if (*file != '\0')
1050 	    return;
1051 	if (i==0)
1052 	{
1053 	    strcpy(p,"','rb').read(),'");
1054 	    p += 16;
1055 	}
1056 	else
1057 	{
1058 	    strcpy(p,"','exec'))");
1059 	    p += 10;
1060 	}
1061     }
1062 
1063 
1064     /* Execute the file */
1065     DoPyCommand(buffer,
1066 	    (rangeinitializer) init_range_cmd,
1067 	    (runner) run_cmd,
1068 	    (void *) eap);
1069 }
1070 
1071     void
1072 ex_py3do(exarg_T *eap)
1073 {
1074     if (p_pyx == 0)
1075 	p_pyx = 3;
1076 
1077     DoPyCommand((char *)eap->arg,
1078 	    (rangeinitializer)init_range_cmd,
1079 	    (runner)run_do,
1080 	    (void *)eap);
1081 }
1082 
1083 /******************************************************
1084  * 2. Python output stream: writes output via [e]msg().
1085  */
1086 
1087 /* Implementation functions
1088  */
1089 
1090     static PyObject *
1091 OutputGetattro(PyObject *self, PyObject *nameobj)
1092 {
1093     GET_ATTR_STRING(name, nameobj);
1094 
1095     if (strcmp(name, "softspace") == 0)
1096 	return PyLong_FromLong(((OutputObject *)(self))->softspace);
1097     else if (strcmp(name, "errors") == 0)
1098 	return PyString_FromString("strict");
1099     else if (strcmp(name, "encoding") == 0)
1100 	return PyString_FromString(ENC_OPT);
1101 
1102     return PyObject_GenericGetAttr(self, nameobj);
1103 }
1104 
1105     static int
1106 OutputSetattro(PyObject *self, PyObject *nameobj, PyObject *val)
1107 {
1108     GET_ATTR_STRING(name, nameobj);
1109 
1110     return OutputSetattr((OutputObject *)(self), name, val);
1111 }
1112 
1113 /******************************************************
1114  * 3. Implementation of the Vim module for Python
1115  */
1116 
1117 /* Window type - Implementation functions
1118  * --------------------------------------
1119  */
1120 
1121 #define WindowType_Check(obj) ((obj)->ob_base.ob_type == &WindowType)
1122 
1123 /* Buffer type - Implementation functions
1124  * --------------------------------------
1125  */
1126 
1127 #define BufferType_Check(obj) ((obj)->ob_base.ob_type == &BufferType)
1128 
1129 static PyObject* BufferSubscript(PyObject *self, PyObject *idx);
1130 static Py_ssize_t BufferAsSubscript(PyObject *self, PyObject *idx, PyObject *val);
1131 
1132 /* Line range type - Implementation functions
1133  * --------------------------------------
1134  */
1135 
1136 #define RangeType_Check(obj) ((obj)->ob_base.ob_type == &RangeType)
1137 
1138 static PyObject* RangeSubscript(PyObject *self, PyObject *idx);
1139 static Py_ssize_t RangeAsItem(PyObject *, Py_ssize_t, PyObject *);
1140 static Py_ssize_t RangeAsSubscript(PyObject *self, PyObject *idx, PyObject *val);
1141 
1142 /* Current objects type - Implementation functions
1143  * -----------------------------------------------
1144  */
1145 
1146 static PySequenceMethods BufferAsSeq = {
1147     (lenfunc)		BufferLength,	    /* sq_length,    len(x)   */
1148     (binaryfunc)	0,		    /* sq_concat,    x+y      */
1149     (ssizeargfunc)	0,		    /* sq_repeat,    x*n      */
1150     (ssizeargfunc)	BufferItem,	    /* sq_item,      x[i]     */
1151     0,					    /* was_sq_slice,	 x[i:j]   */
1152     0,					    /* sq_ass_item,  x[i]=v   */
1153     0,					    /* sq_ass_slice, x[i:j]=v */
1154     0,					    /* sq_contains */
1155     0,					    /* sq_inplace_concat */
1156     0,					    /* sq_inplace_repeat */
1157 };
1158 
1159 static PyMappingMethods BufferAsMapping = {
1160     /* mp_length	*/ (lenfunc)BufferLength,
1161     /* mp_subscript     */ (binaryfunc)BufferSubscript,
1162     /* mp_ass_subscript */ (objobjargproc)BufferAsSubscript,
1163 };
1164 
1165 
1166 /* Buffer object
1167  */
1168 
1169     static PyObject *
1170 BufferGetattro(PyObject *self, PyObject *nameobj)
1171 {
1172     PyObject *r;
1173 
1174     GET_ATTR_STRING(name, nameobj);
1175 
1176     if ((r = BufferAttrValid((BufferObject *)(self), name)))
1177 	return r;
1178 
1179     if (CheckBuffer((BufferObject *)(self)))
1180 	return NULL;
1181 
1182     r = BufferAttr((BufferObject *)(self), name);
1183     if (r || PyErr_Occurred())
1184 	return r;
1185     else
1186 	return PyObject_GenericGetAttr(self, nameobj);
1187 }
1188 
1189     static int
1190 BufferSetattro(PyObject *self, PyObject *nameobj, PyObject *val)
1191 {
1192     GET_ATTR_STRING(name, nameobj);
1193 
1194     return BufferSetattr((BufferObject *)(self), name, val);
1195 }
1196 
1197 /******************/
1198 
1199     static PyObject *
1200 BufferSubscript(PyObject *self, PyObject* idx)
1201 {
1202     if (PyLong_Check(idx))
1203     {
1204 	long _idx = PyLong_AsLong(idx);
1205 	return BufferItem((BufferObject *)(self), _idx);
1206     } else if (PySlice_Check(idx))
1207     {
1208 	Py_ssize_t start, stop, step, slicelen;
1209 
1210 	if (CheckBuffer((BufferObject *) self))
1211 	    return NULL;
1212 
1213 	if (PySlice_GetIndicesEx((PySliceObject_T *)idx,
1214 	      (Py_ssize_t)((BufferObject *)(self))->buf->b_ml.ml_line_count,
1215 	      &start, &stop,
1216 	      &step, &slicelen) < 0)
1217 	{
1218 	    return NULL;
1219 	}
1220 	return BufferSlice((BufferObject *)(self), start, stop);
1221     }
1222     else
1223     {
1224 	RAISE_INVALID_INDEX_TYPE(idx);
1225 	return NULL;
1226     }
1227 }
1228 
1229     static Py_ssize_t
1230 BufferAsSubscript(PyObject *self, PyObject* idx, PyObject* val)
1231 {
1232     if (PyLong_Check(idx))
1233     {
1234 	long n = PyLong_AsLong(idx);
1235 	return RBAsItem((BufferObject *)(self), n, val, 1,
1236 		    (Py_ssize_t)((BufferObject *)(self))->buf->b_ml.ml_line_count,
1237 		    NULL);
1238     } else if (PySlice_Check(idx))
1239     {
1240 	Py_ssize_t start, stop, step, slicelen;
1241 
1242 	if (CheckBuffer((BufferObject *) self))
1243 	    return -1;
1244 
1245 	if (PySlice_GetIndicesEx((PySliceObject_T *)idx,
1246 	      (Py_ssize_t)((BufferObject *)(self))->buf->b_ml.ml_line_count,
1247 	      &start, &stop,
1248 	      &step, &slicelen) < 0)
1249 	{
1250 	    return -1;
1251 	}
1252 	return RBAsSlice((BufferObject *)(self), start, stop, val, 1,
1253 			  (PyInt)((BufferObject *)(self))->buf->b_ml.ml_line_count,
1254 			  NULL);
1255     }
1256     else
1257     {
1258 	RAISE_INVALID_INDEX_TYPE(idx);
1259 	return -1;
1260     }
1261 }
1262 
1263 static PySequenceMethods RangeAsSeq = {
1264     (lenfunc)		RangeLength,	 /* sq_length,	  len(x)   */
1265     (binaryfunc)	0,		 /* RangeConcat, sq_concat,  x+y   */
1266     (ssizeargfunc)	0,		 /* RangeRepeat, sq_repeat,  x*n   */
1267     (ssizeargfunc)	RangeItem,	 /* sq_item,	  x[i]	   */
1268     0,					 /* was_sq_slice,     x[i:j]   */
1269     (ssizeobjargproc)	RangeAsItem,	 /* sq_as_item,  x[i]=v   */
1270     0,					 /* sq_ass_slice, x[i:j]=v */
1271     0,					 /* sq_contains */
1272     0,					 /* sq_inplace_concat */
1273     0,					 /* sq_inplace_repeat */
1274 };
1275 
1276 static PyMappingMethods RangeAsMapping = {
1277     /* mp_length	*/ (lenfunc)RangeLength,
1278     /* mp_subscript     */ (binaryfunc)RangeSubscript,
1279     /* mp_ass_subscript */ (objobjargproc)RangeAsSubscript,
1280 };
1281 
1282 /* Line range object - Implementation
1283  */
1284 
1285     static PyObject *
1286 RangeGetattro(PyObject *self, PyObject *nameobj)
1287 {
1288     GET_ATTR_STRING(name, nameobj);
1289 
1290     if (strcmp(name, "start") == 0)
1291 	return Py_BuildValue("n", ((RangeObject *)(self))->start - 1);
1292     else if (strcmp(name, "end") == 0)
1293 	return Py_BuildValue("n", ((RangeObject *)(self))->end - 1);
1294     else
1295 	return PyObject_GenericGetAttr(self, nameobj);
1296 }
1297 
1298 /****************/
1299 
1300     static Py_ssize_t
1301 RangeAsItem(PyObject *self, Py_ssize_t n, PyObject *val)
1302 {
1303     return RBAsItem(((RangeObject *)(self))->buf, n, val,
1304 		    ((RangeObject *)(self))->start,
1305 		    ((RangeObject *)(self))->end,
1306 		    &((RangeObject *)(self))->end);
1307 }
1308 
1309     static Py_ssize_t
1310 RangeAsSlice(PyObject *self, Py_ssize_t lo, Py_ssize_t hi, PyObject *val)
1311 {
1312     return RBAsSlice(((RangeObject *)(self))->buf, lo, hi, val,
1313 		    ((RangeObject *)(self))->start,
1314 		    ((RangeObject *)(self))->end,
1315 		    &((RangeObject *)(self))->end);
1316 }
1317 
1318     static PyObject *
1319 RangeSubscript(PyObject *self, PyObject* idx)
1320 {
1321     if (PyLong_Check(idx))
1322     {
1323 	long _idx = PyLong_AsLong(idx);
1324 	return RangeItem((RangeObject *)(self), _idx);
1325     } else if (PySlice_Check(idx))
1326     {
1327 	Py_ssize_t start, stop, step, slicelen;
1328 
1329 	if (PySlice_GetIndicesEx((PySliceObject_T *)idx,
1330 		((RangeObject *)(self))->end-((RangeObject *)(self))->start+1,
1331 		&start, &stop,
1332 		&step, &slicelen) < 0)
1333 	{
1334 	    return NULL;
1335 	}
1336 	return RangeSlice((RangeObject *)(self), start, stop);
1337     }
1338     else
1339     {
1340 	RAISE_INVALID_INDEX_TYPE(idx);
1341 	return NULL;
1342     }
1343 }
1344 
1345     static Py_ssize_t
1346 RangeAsSubscript(PyObject *self, PyObject *idx, PyObject *val)
1347 {
1348     if (PyLong_Check(idx))
1349     {
1350 	long n = PyLong_AsLong(idx);
1351 	return RangeAsItem(self, n, val);
1352     } else if (PySlice_Check(idx))
1353     {
1354 	Py_ssize_t start, stop, step, slicelen;
1355 
1356 	if (PySlice_GetIndicesEx((PySliceObject_T *)idx,
1357 		((RangeObject *)(self))->end-((RangeObject *)(self))->start+1,
1358 		&start, &stop,
1359 		&step, &slicelen) < 0)
1360 	{
1361 	    return -1;
1362 	}
1363 	return RangeAsSlice(self, start, stop, val);
1364     }
1365     else
1366     {
1367 	RAISE_INVALID_INDEX_TYPE(idx);
1368 	return -1;
1369     }
1370 }
1371 
1372 /* TabPage object - Implementation
1373  */
1374 
1375     static PyObject *
1376 TabPageGetattro(PyObject *self, PyObject *nameobj)
1377 {
1378     PyObject *r;
1379 
1380     GET_ATTR_STRING(name, nameobj);
1381 
1382     if ((r = TabPageAttrValid((TabPageObject *)(self), name)))
1383 	return r;
1384 
1385     if (CheckTabPage((TabPageObject *)(self)))
1386 	return NULL;
1387 
1388     r = TabPageAttr((TabPageObject *)(self), name);
1389     if (r || PyErr_Occurred())
1390 	return r;
1391     else
1392 	return PyObject_GenericGetAttr(self, nameobj);
1393 }
1394 
1395 /* Window object - Implementation
1396  */
1397 
1398     static PyObject *
1399 WindowGetattro(PyObject *self, PyObject *nameobj)
1400 {
1401     PyObject *r;
1402 
1403     GET_ATTR_STRING(name, nameobj);
1404 
1405     if ((r = WindowAttrValid((WindowObject *)(self), name)))
1406 	return r;
1407 
1408     if (CheckWindow((WindowObject *)(self)))
1409 	return NULL;
1410 
1411     r = WindowAttr((WindowObject *)(self), name);
1412     if (r || PyErr_Occurred())
1413 	return r;
1414     else
1415 	return PyObject_GenericGetAttr(self, nameobj);
1416 }
1417 
1418     static int
1419 WindowSetattro(PyObject *self, PyObject *nameobj, PyObject *val)
1420 {
1421     GET_ATTR_STRING(name, nameobj);
1422 
1423     return WindowSetattr((WindowObject *)(self), name, val);
1424 }
1425 
1426 /* Tab page list object - Definitions
1427  */
1428 
1429 static PySequenceMethods TabListAsSeq = {
1430     (lenfunc)	     TabListLength,	    /* sq_length,    len(x)   */
1431     (binaryfunc)     0,			    /* sq_concat,    x+y      */
1432     (ssizeargfunc)   0,			    /* sq_repeat,    x*n      */
1433     (ssizeargfunc)   TabListItem,	    /* sq_item,      x[i]     */
1434     0,					    /* sq_slice,     x[i:j]   */
1435     (ssizeobjargproc)0,			    /* sq_as_item,  x[i]=v   */
1436     0,					    /* sq_ass_slice, x[i:j]=v */
1437     0,					    /* sq_contains */
1438     0,					    /* sq_inplace_concat */
1439     0,					    /* sq_inplace_repeat */
1440 };
1441 
1442 /* Window list object - Definitions
1443  */
1444 
1445 static PySequenceMethods WinListAsSeq = {
1446     (lenfunc)	     WinListLength,	    /* sq_length,    len(x)   */
1447     (binaryfunc)     0,			    /* sq_concat,    x+y      */
1448     (ssizeargfunc)   0,			    /* sq_repeat,    x*n      */
1449     (ssizeargfunc)   WinListItem,	    /* sq_item,      x[i]     */
1450     0,					    /* sq_slice,     x[i:j]   */
1451     (ssizeobjargproc)0,			    /* sq_as_item,  x[i]=v   */
1452     0,					    /* sq_ass_slice, x[i:j]=v */
1453     0,					    /* sq_contains */
1454     0,					    /* sq_inplace_concat */
1455     0,					    /* sq_inplace_repeat */
1456 };
1457 
1458 /* Current items object - Implementation
1459  */
1460     static PyObject *
1461 CurrentGetattro(PyObject *self, PyObject *nameobj)
1462 {
1463     PyObject	*r;
1464     GET_ATTR_STRING(name, nameobj);
1465     if (!(r = CurrentGetattr(self, name)))
1466 	return PyObject_GenericGetAttr(self, nameobj);
1467     return r;
1468 }
1469 
1470     static int
1471 CurrentSetattro(PyObject *self, PyObject *nameobj, PyObject *value)
1472 {
1473     GET_ATTR_STRING(name, nameobj);
1474     return CurrentSetattr(self, name, value);
1475 }
1476 
1477 /* Dictionary object - Definitions
1478  */
1479 
1480     static PyObject *
1481 DictionaryGetattro(PyObject *self, PyObject *nameobj)
1482 {
1483     DictionaryObject	*this = ((DictionaryObject *) (self));
1484 
1485     GET_ATTR_STRING(name, nameobj);
1486 
1487     if (strcmp(name, "locked") == 0)
1488 	return PyLong_FromLong(this->dict->dv_lock);
1489     else if (strcmp(name, "scope") == 0)
1490 	return PyLong_FromLong(this->dict->dv_scope);
1491 
1492     return PyObject_GenericGetAttr(self, nameobj);
1493 }
1494 
1495     static int
1496 DictionarySetattro(PyObject *self, PyObject *nameobj, PyObject *val)
1497 {
1498     GET_ATTR_STRING(name, nameobj);
1499     return DictionarySetattr((DictionaryObject *)(self), name, val);
1500 }
1501 
1502 /* List object - Definitions
1503  */
1504 
1505     static PyObject *
1506 ListGetattro(PyObject *self, PyObject *nameobj)
1507 {
1508     GET_ATTR_STRING(name, nameobj);
1509 
1510     if (strcmp(name, "locked") == 0)
1511 	return PyLong_FromLong(((ListObject *) (self))->list->lv_lock);
1512 
1513     return PyObject_GenericGetAttr(self, nameobj);
1514 }
1515 
1516     static int
1517 ListSetattro(PyObject *self, PyObject *nameobj, PyObject *val)
1518 {
1519     GET_ATTR_STRING(name, nameobj);
1520     return ListSetattr((ListObject *)(self), name, val);
1521 }
1522 
1523 /* Function object - Definitions
1524  */
1525 
1526     static PyObject *
1527 FunctionGetattro(PyObject *self, PyObject *nameobj)
1528 {
1529     PyObject		*r;
1530     FunctionObject	*this = (FunctionObject *)(self);
1531 
1532     GET_ATTR_STRING(name, nameobj);
1533 
1534     r = FunctionAttr(this, name);
1535     if (r || PyErr_Occurred())
1536 	return r;
1537     else
1538 	return PyObject_GenericGetAttr(self, nameobj);
1539 }
1540 
1541 /* External interface
1542  */
1543 
1544     void
1545 python3_buffer_free(buf_T *buf)
1546 {
1547     if (BUF_PYTHON_REF(buf) != NULL)
1548     {
1549 	BufferObject *bp = BUF_PYTHON_REF(buf);
1550 	bp->buf = INVALID_BUFFER_VALUE;
1551 	BUF_PYTHON_REF(buf) = NULL;
1552     }
1553 }
1554 
1555     void
1556 python3_window_free(win_T *win)
1557 {
1558     if (WIN_PYTHON_REF(win) != NULL)
1559     {
1560 	WindowObject *wp = WIN_PYTHON_REF(win);
1561 	wp->win = INVALID_WINDOW_VALUE;
1562 	WIN_PYTHON_REF(win) = NULL;
1563     }
1564 }
1565 
1566     void
1567 python3_tabpage_free(tabpage_T *tab)
1568 {
1569     if (TAB_PYTHON_REF(tab) != NULL)
1570     {
1571 	TabPageObject *tp = TAB_PYTHON_REF(tab);
1572 	tp->tab = INVALID_TABPAGE_VALUE;
1573 	TAB_PYTHON_REF(tab) = NULL;
1574     }
1575 }
1576 
1577     static PyObject *
1578 Py3Init_vim(void)
1579 {
1580     /* The special value is removed from sys.path in Python3_Init(). */
1581     static wchar_t *(argv[2]) = {L"/must>not&exist/foo", NULL};
1582 
1583     if (init_types())
1584 	return NULL;
1585 
1586     /* Set sys.argv[] to avoid a crash in warn(). */
1587     PySys_SetArgv(1, argv);
1588 
1589     if ((vim_module = PyModule_Create(&vimmodule)) == NULL)
1590 	return NULL;
1591 
1592     if (populate_module(vim_module))
1593 	return NULL;
1594 
1595     if (init_sys_path())
1596 	return NULL;
1597 
1598     return vim_module;
1599 }
1600 
1601 /*************************************************************************
1602  * 4. Utility functions for handling the interface between Vim and Python.
1603  */
1604 
1605 /* Convert a Vim line into a Python string.
1606  * All internal newlines are replaced by null characters.
1607  *
1608  * On errors, the Python exception data is set, and NULL is returned.
1609  */
1610     static PyObject *
1611 LineToString(const char *str)
1612 {
1613     PyObject *result;
1614     Py_ssize_t len = strlen(str);
1615     char *tmp,*p;
1616 
1617     tmp = (char *)alloc((unsigned)(len+1));
1618     p = tmp;
1619     if (p == NULL)
1620     {
1621 	PyErr_NoMemory();
1622 	return NULL;
1623     }
1624 
1625     while (*str)
1626     {
1627 	if (*str == '\n')
1628 	    *p = '\0';
1629 	else
1630 	    *p = *str;
1631 
1632 	++p;
1633 	++str;
1634     }
1635     *p = '\0';
1636 
1637     result = PyUnicode_Decode(tmp, len, (char *)ENC_OPT, CODEC_ERROR_HANDLER);
1638 
1639     vim_free(tmp);
1640     return result;
1641 }
1642 
1643     void
1644 do_py3eval (char_u *str, typval_T *rettv)
1645 {
1646     DoPyCommand((char *) str,
1647 	    (rangeinitializer) init_range_eval,
1648 	    (runner) run_eval,
1649 	    (void *) rettv);
1650     switch(rettv->v_type)
1651     {
1652 	case VAR_DICT: ++rettv->vval.v_dict->dv_refcount; break;
1653 	case VAR_LIST: ++rettv->vval.v_list->lv_refcount; break;
1654 	case VAR_FUNC: func_ref(rettv->vval.v_string);    break;
1655 	case VAR_PARTIAL: ++rettv->vval.v_partial->pt_refcount; break;
1656 	case VAR_UNKNOWN:
1657 	    rettv->v_type = VAR_NUMBER;
1658 	    rettv->vval.v_number = 0;
1659 	    break;
1660 	case VAR_NUMBER:
1661 	case VAR_STRING:
1662 	case VAR_FLOAT:
1663 	case VAR_SPECIAL:
1664 	case VAR_JOB:
1665 	case VAR_CHANNEL:
1666 	    break;
1667     }
1668 }
1669 
1670     int
1671 set_ref_in_python3 (int copyID)
1672 {
1673     return set_ref_in_py(copyID);
1674 }
1675