1 | // -*- c++ -*- |
---|
2 | //***************************************************************************** |
---|
3 | /** @file pyobject.cc |
---|
4 | * |
---|
5 | * @author Alexander Dreyer |
---|
6 | * @date 2010-12-15 |
---|
7 | * |
---|
8 | * This file defines the @c blackbox operations for the pyobject type. |
---|
9 | * |
---|
10 | * @par Copyright: |
---|
11 | * (c) 2010 by The Singular Team, see LICENSE file |
---|
12 | **/ |
---|
13 | //***************************************************************************** |
---|
14 | |
---|
15 | #include "config.h" |
---|
16 | #include <kernel/mod2.h> |
---|
17 | #include <misc/auxiliary.h> |
---|
18 | #include "newstruct.h" |
---|
19 | |
---|
20 | #include <omalloc/omalloc.h> |
---|
21 | |
---|
22 | #include <kernel/febase.h> |
---|
23 | |
---|
24 | #include "subexpr.h" |
---|
25 | #include "lists.h" |
---|
26 | #include "ipid.h" |
---|
27 | #include "blackbox.h" |
---|
28 | |
---|
29 | #include <Python.h> |
---|
30 | // #include <iterator> // std::distance |
---|
31 | // #include <stdio.h> |
---|
32 | |
---|
33 | void sync_contexts(); |
---|
34 | |
---|
35 | /** @class PythonInterpreter |
---|
36 | * This class initializes and finalized the python interpreter. |
---|
37 | * |
---|
38 | * It also stores the Singular token number, which is assigned to this type on |
---|
39 | * runtime. |
---|
40 | **/ |
---|
41 | class PythonInterpreter { |
---|
42 | public: |
---|
43 | typedef int id_type; |
---|
44 | |
---|
45 | ~PythonInterpreter() { if(m_owns_python) Py_Finalize(); } |
---|
46 | |
---|
47 | /// Initialize unique (singleton) python interpreter instance, |
---|
48 | /// and set Singular type identifier |
---|
49 | static void init(id_type num ) { instance().m_id = num; } |
---|
50 | |
---|
51 | /// Get Singular type identitfier |
---|
52 | static id_type id() { return instance().m_id; } |
---|
53 | |
---|
54 | private: |
---|
55 | /// Singleton: Only init() is allowed to construct an instance |
---|
56 | PythonInterpreter(): |
---|
57 | m_id(0), m_owns_python(false) { start_python(); } |
---|
58 | |
---|
59 | /// Static initialization - |
---|
60 | /// safely takes care of destruction on program termination |
---|
61 | static PythonInterpreter& instance() |
---|
62 | { |
---|
63 | static PythonInterpreter init_interpreter; |
---|
64 | return init_interpreter; |
---|
65 | } |
---|
66 | |
---|
67 | void start_python() |
---|
68 | { |
---|
69 | if (!Py_IsInitialized()) init_python(); |
---|
70 | set_python_defaults(); |
---|
71 | } |
---|
72 | |
---|
73 | void init_python() |
---|
74 | { |
---|
75 | Py_Initialize(); |
---|
76 | m_owns_python = true; |
---|
77 | } |
---|
78 | |
---|
79 | void set_python_defaults() |
---|
80 | { |
---|
81 | // Sone python modules needs argc, argv set for some reason |
---|
82 | char* argv = ""; |
---|
83 | PySys_SetArgv(1, &argv); |
---|
84 | PyRun_SimpleString("from sys import path, modules"); |
---|
85 | PyRun_SimpleString("_SINGULAR_IMPORTED = dict()"); |
---|
86 | |
---|
87 | char cmd[MAXPATHLEN + 20]; |
---|
88 | sprintf(cmd, "path.insert(0, '%s')", feGetResource('b')); |
---|
89 | PyRun_SimpleString(cmd); |
---|
90 | PyRun_SimpleString("del path"); // cleanup |
---|
91 | } |
---|
92 | |
---|
93 | id_type m_id; |
---|
94 | bool m_owns_python; |
---|
95 | }; |
---|
96 | |
---|
97 | /** @class PythonObject |
---|
98 | * This class defines an interface for calling PyObject from Singular. |
---|
99 | * |
---|
100 | * @note This class does not take care of the memory mangement, this is done in |
---|
101 | * the blackbox routines. |
---|
102 | **/ |
---|
103 | class PythonObject |
---|
104 | { |
---|
105 | typedef PythonObject self; |
---|
106 | |
---|
107 | public: |
---|
108 | typedef PyObject* ptr_type; |
---|
109 | struct sequence_tag{}; |
---|
110 | struct null_tag {}; |
---|
111 | |
---|
112 | PythonObject(): m_ptr(Py_None) { } |
---|
113 | PythonObject(null_tag): m_ptr(NULL) { } |
---|
114 | PythonObject(ptr_type ptr): m_ptr(ptr) {if (!ptr) handle_exception();} |
---|
115 | |
---|
116 | ptr_type check_context(ptr_type ptr) const { |
---|
117 | if(ptr) sync_contexts(); |
---|
118 | return ptr; |
---|
119 | } |
---|
120 | /// Unary operations |
---|
121 | self operator()(int op) const |
---|
122 | { |
---|
123 | switch(op) |
---|
124 | { |
---|
125 | case '(': return check_context(PyObject_CallObject(*this, NULL)); |
---|
126 | case ATTRIB_CMD: return PyObject_Dir(*this); |
---|
127 | case PROC_CMD: return *this; |
---|
128 | } |
---|
129 | |
---|
130 | if (op == PythonInterpreter::id()) |
---|
131 | return *this; |
---|
132 | |
---|
133 | return self(null_tag()); |
---|
134 | } |
---|
135 | |
---|
136 | /// Binary and n-ary operations |
---|
137 | self operator()(int op, const self& arg) const { |
---|
138 | |
---|
139 | switch(op) |
---|
140 | { |
---|
141 | case '+': return PyNumber_Add(*this, arg); |
---|
142 | case '-': return PyNumber_Subtract(*this, arg); |
---|
143 | case '*': return PyNumber_Multiply(*this, arg); |
---|
144 | case '/': return PyNumber_Divide(*this, arg); |
---|
145 | case '^': return PyNumber_Power(*this, arg, Py_None); |
---|
146 | case '(': return check_context(PyObject_CallObject(*this, arg)); |
---|
147 | case '[': return operator[](arg); |
---|
148 | case KILLATTR_CMD: return del_attr(arg); |
---|
149 | case LIST_CMD: return args2list(arg); |
---|
150 | case '.': case COLONCOLON: case ATTRIB_CMD: return attr(arg); |
---|
151 | } |
---|
152 | return self(null_tag()); |
---|
153 | } |
---|
154 | |
---|
155 | /// Ternary operations |
---|
156 | self operator()(int op, const self& arg1, const self& arg2) const |
---|
157 | { |
---|
158 | switch(op) |
---|
159 | { |
---|
160 | case ATTRIB_CMD: |
---|
161 | if(PyObject_SetAttr(*this, arg1, arg2) == -1) handle_exception(); |
---|
162 | return self(); |
---|
163 | } |
---|
164 | return self(null_tag()); |
---|
165 | } |
---|
166 | |
---|
167 | /// Get item |
---|
168 | self operator[](const self& idx) const { return PyObject_GetItem(*this, idx); } |
---|
169 | self operator[](long idx) const { return operator[](PyInt_FromLong(idx)); } |
---|
170 | |
---|
171 | /// Get actual PyObject* |
---|
172 | operator const ptr_type() const { return m_ptr; } |
---|
173 | |
---|
174 | /// Get representative as C-style string |
---|
175 | char* repr() const |
---|
176 | { |
---|
177 | return omStrDup(PyString_AsString(PyObject_Repr(*this))); |
---|
178 | } |
---|
179 | |
---|
180 | /// Extract C-style string |
---|
181 | char* str() const { return omStrDup(PyString_AsString(*this)); } |
---|
182 | |
---|
183 | Py_ssize_t size() const { return PyObject_Size(m_ptr); } |
---|
184 | |
---|
185 | BOOLEAN assign_to(leftv result) |
---|
186 | { |
---|
187 | return (m_ptr? (m_ptr == Py_None? none_to(result): python_to(result)): TRUE); |
---|
188 | } |
---|
189 | |
---|
190 | void import_as(const char* name) const { |
---|
191 | idhdl handle = enterid(omStrDup(name), 0, DEF_CMD, |
---|
192 | &IDROOT, FALSE); |
---|
193 | |
---|
194 | if (handle) |
---|
195 | { |
---|
196 | IDDATA(handle) = (char*)m_ptr; |
---|
197 | Py_XINCREF(m_ptr); |
---|
198 | IDTYP(handle) = PythonInterpreter::id(); |
---|
199 | } |
---|
200 | else { Werror("Importing pyobject to Singular failed"); } |
---|
201 | } |
---|
202 | |
---|
203 | int compare(int op, const self& arg) const |
---|
204 | { return PyObject_RichCompareBool(*this, arg, py_opid(op)); } |
---|
205 | |
---|
206 | |
---|
207 | self attr(const self& arg) const { return PyObject_GetAttr(*this, arg); } |
---|
208 | |
---|
209 | self del_attr(const self& arg) const |
---|
210 | { |
---|
211 | if (!PyObject_HasAttr(*this, arg)) |
---|
212 | Werror("Cannot delete attribute %s.", arg.repr()); |
---|
213 | else |
---|
214 | PyObject_DelAttr(*this, arg); |
---|
215 | |
---|
216 | return self(); |
---|
217 | } |
---|
218 | |
---|
219 | protected: |
---|
220 | self args2list(const self& args) const |
---|
221 | { |
---|
222 | self pylist(PyList_New(0)); |
---|
223 | PyList_Append(pylist, *this); |
---|
224 | if(PyTuple_Check(args)) pylist.append_iter(PyObject_GetIter(args)); |
---|
225 | else PyList_Append(pylist, args); |
---|
226 | |
---|
227 | return pylist; |
---|
228 | } |
---|
229 | |
---|
230 | void handle_exception() const { |
---|
231 | |
---|
232 | PyObject *pType, *pMessage, *pTraceback; |
---|
233 | PyErr_Fetch(&pType, &pMessage, &pTraceback); |
---|
234 | |
---|
235 | Werror("pyobject error occured"); |
---|
236 | Werror(PyString_AsString(pMessage)); |
---|
237 | |
---|
238 | Py_XDECREF(pType); |
---|
239 | Py_XDECREF(pMessage); |
---|
240 | Py_XDECREF(pTraceback); |
---|
241 | |
---|
242 | PyErr_Clear(); |
---|
243 | } |
---|
244 | |
---|
245 | void append_iter(self iterator) { |
---|
246 | ptr_type item; |
---|
247 | while (item = PyIter_Next(iterator)) { |
---|
248 | PyList_Append(*this, item); |
---|
249 | Py_DECREF(item); |
---|
250 | } |
---|
251 | } |
---|
252 | |
---|
253 | int py_opid(int op) const{ |
---|
254 | switch(op) |
---|
255 | { |
---|
256 | case '<': return Py_LT; |
---|
257 | case '>': return Py_GT; |
---|
258 | case EQUAL_EQUAL: return Py_EQ; |
---|
259 | case NOTEQUAL: return Py_NE; |
---|
260 | case GE: return Py_GE; |
---|
261 | case LE: return Py_LE; |
---|
262 | } |
---|
263 | return -1; |
---|
264 | } |
---|
265 | |
---|
266 | private: |
---|
267 | BOOLEAN none_to(leftv result) const |
---|
268 | { |
---|
269 | result->data = NULL; |
---|
270 | result->rtyp = NONE; |
---|
271 | return FALSE; |
---|
272 | } |
---|
273 | |
---|
274 | BOOLEAN python_to(leftv result) const |
---|
275 | { |
---|
276 | result->data = m_ptr; |
---|
277 | Py_XINCREF(m_ptr); |
---|
278 | result->rtyp = PythonInterpreter::id(); |
---|
279 | return !m_ptr; |
---|
280 | } |
---|
281 | |
---|
282 | /// The actual pointer |
---|
283 | ptr_type m_ptr; |
---|
284 | }; |
---|
285 | |
---|
286 | |
---|
287 | |
---|
288 | /** @class PythonCastStatic |
---|
289 | * This template class does conversion of Singular objects to python objects on |
---|
290 | * compile-time. |
---|
291 | * |
---|
292 | * @note The Singular objects are assumed to be equivalent to the template argument. |
---|
293 | **/ |
---|
294 | template <class CastType = PythonObject::ptr_type> |
---|
295 | class PythonCastStatic: |
---|
296 | public PythonObject { |
---|
297 | public: |
---|
298 | |
---|
299 | PythonCastStatic(void* value): |
---|
300 | PythonObject(get(reinterpret_cast<CastType>(value))) {} |
---|
301 | |
---|
302 | PythonCastStatic(leftv value): |
---|
303 | PythonObject(get(reinterpret_cast<CastType>(value->Data()))) {} |
---|
304 | |
---|
305 | private: |
---|
306 | ptr_type get(ptr_type value) { return value; } |
---|
307 | ptr_type get(long value) { return PyInt_FromLong(value); } |
---|
308 | ptr_type get(const char* value) { return PyString_FromString(value); } |
---|
309 | ptr_type get(char* value) { return get(const_cast<const char*>(value)); } |
---|
310 | ptr_type get(lists value); // inlined after PythonObjectDynamic |
---|
311 | }; |
---|
312 | |
---|
313 | |
---|
314 | |
---|
315 | /** @class PythonCastDynamic |
---|
316 | * This class does conversion of Singular objects to python objects on runtime. |
---|
317 | * |
---|
318 | **/ |
---|
319 | class PythonCastDynamic: |
---|
320 | public PythonObject { |
---|
321 | typedef PythonCastDynamic self; |
---|
322 | |
---|
323 | public: |
---|
324 | PythonCastDynamic(leftv value): PythonObject(get(value, value->Typ())) {} |
---|
325 | |
---|
326 | private: |
---|
327 | PythonObject get(leftv value, int typeId) |
---|
328 | { |
---|
329 | if (typeId == PythonInterpreter::id()) return PythonCastStatic<>(value); |
---|
330 | |
---|
331 | switch (typeId) |
---|
332 | { |
---|
333 | case INT_CMD: return PythonCastStatic<long>(value); |
---|
334 | case STRING_CMD: return PythonCastStatic<const char*>(value); |
---|
335 | case LIST_CMD: return PythonCastStatic<lists>(value); |
---|
336 | } |
---|
337 | |
---|
338 | if (typeId > MAX_TOK) // custom types |
---|
339 | { |
---|
340 | blackbox *bbx = getBlackboxStuff(typeId); |
---|
341 | sleftv tmp; |
---|
342 | if (! bbx->blackbox_Op1(PythonInterpreter::id(), &tmp, value) ) |
---|
343 | return PythonCastStatic<>(&tmp); |
---|
344 | } |
---|
345 | else |
---|
346 | Werror("type '%s` incompatible with 'pyobject`", iiTwoOps(typeId)); |
---|
347 | |
---|
348 | return PythonObject(); |
---|
349 | } |
---|
350 | }; |
---|
351 | |
---|
352 | template <class CastType> |
---|
353 | inline PythonObject::ptr_type |
---|
354 | PythonCastStatic<CastType>::get(lists value) |
---|
355 | { |
---|
356 | ptr_type pylist(PyList_New(0)); |
---|
357 | for (size_t i = 0; i <= value->nr; ++i) |
---|
358 | PyList_Append(pylist, PythonCastDynamic((value->m) + i)); |
---|
359 | |
---|
360 | return pylist; |
---|
361 | } |
---|
362 | |
---|
363 | /// Template specialization for getting handling sequence |
---|
364 | template <> |
---|
365 | class PythonCastStatic<PythonObject::sequence_tag>: |
---|
366 | public PythonObject |
---|
367 | { |
---|
368 | public: |
---|
369 | |
---|
370 | PythonCastStatic(leftv value): |
---|
371 | PythonObject(PyTuple_New(size(value))) { append_to(value); } |
---|
372 | |
---|
373 | |
---|
374 | private: |
---|
375 | size_t size(leftv iter, size_t distance = 0) const |
---|
376 | { |
---|
377 | if (iter) { do { ++distance; } while(iter = iter->next); }; |
---|
378 | return distance; |
---|
379 | } |
---|
380 | |
---|
381 | void append_to(leftv iter) const |
---|
382 | { |
---|
383 | for(size_t idx = 0; iter != NULL; iter = iter->next) |
---|
384 | PyTuple_SetItem(*this, idx++, PythonCastDynamic(iter)); |
---|
385 | } |
---|
386 | }; |
---|
387 | |
---|
388 | |
---|
389 | PythonObject get_attrib_name(leftv arg) |
---|
390 | { |
---|
391 | typedef PythonCastStatic<const char*> result_type; |
---|
392 | if (arg->Typ() == STRING_CMD) |
---|
393 | return result_type(arg); |
---|
394 | |
---|
395 | return result_type((void*)arg->Name()); |
---|
396 | } |
---|
397 | |
---|
398 | /// Evaluate string in python |
---|
399 | PythonObject python_eval(const char* arg) { |
---|
400 | |
---|
401 | PyObject* globals = PyModule_GetDict(PyImport_Import(PyString_FromString("__main__"))); |
---|
402 | return PyRun_String(arg, Py_eval_input, globals, globals); |
---|
403 | } |
---|
404 | |
---|
405 | /// Evaluate string in python from Singular |
---|
406 | BOOLEAN python_eval(leftv result, leftv arg) { |
---|
407 | if ( !arg || (arg->Typ() != STRING_CMD) ) { |
---|
408 | Werror("expected python_eval('string')"); |
---|
409 | return TRUE; |
---|
410 | } |
---|
411 | |
---|
412 | return python_eval(reinterpret_cast<const char*>(arg->Data())).assign_to(result); |
---|
413 | } |
---|
414 | |
---|
415 | |
---|
416 | /// Execute string in python from Singular |
---|
417 | BOOLEAN python_run(leftv result, leftv arg) |
---|
418 | { |
---|
419 | if ( !arg || (arg->Typ() != STRING_CMD) ) { |
---|
420 | Werror("expected python_run('string')"); |
---|
421 | return TRUE; |
---|
422 | } |
---|
423 | |
---|
424 | PyRun_SimpleString(reinterpret_cast<const char*>(arg->Data())); |
---|
425 | sync_contexts(); |
---|
426 | return PythonCastStatic<>(Py_None).assign_to(result); |
---|
427 | } |
---|
428 | |
---|
429 | PythonObject names_from_module(const char* module_name) |
---|
430 | { |
---|
431 | char buffer[strlen(module_name) + 30]; |
---|
432 | sprintf (buffer, "SINGULAR_MODULE_NAME = '%s'", module_name); |
---|
433 | PyRun_SimpleString(buffer); |
---|
434 | PyRun_SimpleString("from sys import modules"); |
---|
435 | PyRun_SimpleString("exec('from ' + SINGULAR_MODULE_NAME + ' import *')"); |
---|
436 | |
---|
437 | return python_eval("[str for str in dir(modules[SINGULAR_MODULE_NAME]) if str[0] != '_']"); |
---|
438 | } |
---|
439 | |
---|
440 | void from_module_import_all(const char* module_name) |
---|
441 | { |
---|
442 | char buffer[strlen(module_name) + 20]; |
---|
443 | sprintf (buffer, "from %s import *", module_name); |
---|
444 | PyRun_SimpleString(buffer); |
---|
445 | } |
---|
446 | |
---|
447 | /// import python module and export identifiers in Singular namespace |
---|
448 | BOOLEAN python_import(leftv result, leftv value) { |
---|
449 | |
---|
450 | if ((value == NULL) || (value->Typ()!= STRING_CMD)) { |
---|
451 | Werror("expected python_import('string')"); |
---|
452 | return TRUE; |
---|
453 | } |
---|
454 | |
---|
455 | from_module_import_all(reinterpret_cast<const char*>(value->Data())); |
---|
456 | sync_contexts(); |
---|
457 | |
---|
458 | return PythonCastStatic<>(Py_None).assign_to(result); |
---|
459 | } |
---|
460 | |
---|
461 | /// blackbox support - initialization |
---|
462 | void* pyobject_Init(blackbox*) |
---|
463 | { |
---|
464 | return Py_None; |
---|
465 | } |
---|
466 | |
---|
467 | /// blackbox support - convert to string representation |
---|
468 | char* pyobject_String(blackbox *b, void* ptr) |
---|
469 | { |
---|
470 | return PythonCastStatic<>(ptr).repr(); |
---|
471 | } |
---|
472 | |
---|
473 | /// blackbox support - copy element |
---|
474 | void* pyobject_Copy(blackbox*b, void* ptr) |
---|
475 | { |
---|
476 | Py_XINCREF(ptr); |
---|
477 | return ptr; |
---|
478 | } |
---|
479 | |
---|
480 | /// blackbox support - assign element |
---|
481 | BOOLEAN pyobject_Assign(leftv l, leftv r) |
---|
482 | { |
---|
483 | Py_XDECREF(l->Data()); |
---|
484 | PyObject* result = PythonCastDynamic(r); |
---|
485 | Py_XINCREF(result); |
---|
486 | |
---|
487 | if (l->rtyp == IDHDL) |
---|
488 | IDDATA((idhdl)l->data) = (char *)result; |
---|
489 | else |
---|
490 | l->data = (void *)result; |
---|
491 | |
---|
492 | return !result; |
---|
493 | } |
---|
494 | |
---|
495 | |
---|
496 | /// blackbox support - unary operations |
---|
497 | BOOLEAN pyobject_Op1(int op, leftv res, leftv head) |
---|
498 | { |
---|
499 | switch(op) |
---|
500 | { |
---|
501 | case INT_CMD: // built-in return types first |
---|
502 | { |
---|
503 | long value = PyInt_AsLong(PythonCastStatic<>(head)); |
---|
504 | if( (value == -1) && PyErr_Occurred() ) { |
---|
505 | Werror("'pyobject` cannot be converted to integer"); |
---|
506 | PyErr_Clear(); |
---|
507 | return TRUE; |
---|
508 | } |
---|
509 | res->data = (void*) value; |
---|
510 | res->rtyp = INT_CMD; |
---|
511 | return FALSE; |
---|
512 | } |
---|
513 | case TYPEOF_CMD: |
---|
514 | res->data = (void*) omStrDup("pyobject"); |
---|
515 | res->rtyp = STRING_CMD; |
---|
516 | return FALSE; |
---|
517 | } |
---|
518 | |
---|
519 | if (!PythonCastStatic<>(head)(op).assign_to(res)) |
---|
520 | return FALSE; |
---|
521 | |
---|
522 | BOOLEAN newstruct_Op1(int, leftv, leftv); // forward declaration |
---|
523 | return newstruct_Op1(op, res, head); |
---|
524 | } |
---|
525 | |
---|
526 | |
---|
527 | /// blackbox support - binary operations |
---|
528 | BOOLEAN pyobject_Op2(int op, leftv res, leftv arg1, leftv arg2) |
---|
529 | { |
---|
530 | PythonCastStatic<> lhs(arg1); |
---|
531 | |
---|
532 | switch(op) // built-in return types and special cases first |
---|
533 | { |
---|
534 | case '<': case '>': case EQUAL_EQUAL: case NOTEQUAL: case GE: case LE: |
---|
535 | { |
---|
536 | res->data = (void *)lhs.compare(op, PythonCastDynamic(arg2)); |
---|
537 | res->rtyp = INT_CMD; |
---|
538 | return FALSE; |
---|
539 | } |
---|
540 | case '.': case COLONCOLON: case ATTRIB_CMD: |
---|
541 | return lhs.attr(get_attrib_name(arg2)).assign_to(res); |
---|
542 | } |
---|
543 | |
---|
544 | PythonCastDynamic rhs(arg2); |
---|
545 | if (!lhs(op, rhs).assign_to(res)) |
---|
546 | return FALSE; |
---|
547 | |
---|
548 | BOOLEAN newstruct_Op2(int, leftv, leftv, leftv); // forward declaration |
---|
549 | return newstruct_Op2(op, res, arg1, arg2); |
---|
550 | |
---|
551 | } |
---|
552 | |
---|
553 | /// blackbox support - ternary operations |
---|
554 | BOOLEAN pyobject_Op3(int op, leftv res, leftv arg1, leftv arg2, leftv arg3) |
---|
555 | { |
---|
556 | PythonCastStatic<> lhs(arg1); |
---|
557 | PythonCastDynamic rhs1(arg2); |
---|
558 | PythonCastDynamic rhs2(arg3); |
---|
559 | |
---|
560 | if (!lhs(op, rhs1, rhs2).assign_to(res)) |
---|
561 | return blackboxDefaultOp3(op, res, arg1, arg2, arg3); |
---|
562 | } |
---|
563 | |
---|
564 | |
---|
565 | /// blackbox support - n-ary operations |
---|
566 | BOOLEAN pyobject_OpM(int op, leftv res, leftv args) |
---|
567 | { |
---|
568 | typedef PythonCastStatic<PythonObject::sequence_tag> seq_type; |
---|
569 | |
---|
570 | switch(op) // built-in return types first |
---|
571 | { |
---|
572 | case STRING_CMD: |
---|
573 | { |
---|
574 | blackbox* a = getBlackboxStuff(args->Typ()); |
---|
575 | res->data = (void *)a->blackbox_String(a, args->Data()); |
---|
576 | res->rtyp = STRING_CMD; |
---|
577 | return FALSE; |
---|
578 | } |
---|
579 | } |
---|
580 | |
---|
581 | typedef PythonCastStatic<PythonObject::sequence_tag> seq_type; |
---|
582 | if (! PythonCastStatic<>(args)(op, seq_type(args->next)).assign_to(res)) |
---|
583 | return FALSE; |
---|
584 | |
---|
585 | BOOLEAN newstruct_OpM(int, leftv, leftv); // forward declaration |
---|
586 | return newstruct_OpM(op, res, args); |
---|
587 | } |
---|
588 | |
---|
589 | /// blackbox support - destruction |
---|
590 | void pyobject_destroy(blackbox *b, void* ptr) |
---|
591 | { |
---|
592 | Py_XDECREF(ptr); |
---|
593 | } |
---|
594 | |
---|
595 | PyObject* get_current_definition(const char* name) { |
---|
596 | idhdl handle = ggetid(name); |
---|
597 | if (!handle || (IDTYP(handle) != PythonInterpreter::id())) return NULL; |
---|
598 | PythonCastStatic<PyObject*> value(IDDATA(handle)); |
---|
599 | return value; |
---|
600 | } |
---|
601 | |
---|
602 | /// getting stuff from python to Singular namespace |
---|
603 | void sync_contexts() |
---|
604 | { |
---|
605 | PyRun_SimpleString("_SINGULAR_NEW = modules['__main__'].__dict__.copy()"); |
---|
606 | |
---|
607 | PythonObject newElts = python_eval("[(_k, _e) \ |
---|
608 | for (_k, _e) in _SINGULAR_NEW.iteritems() \ |
---|
609 | if _k not in _SINGULAR_IMPORTED or not _SINGULAR_IMPORTED[_k] is _e]"); |
---|
610 | |
---|
611 | long len = newElts.size(); |
---|
612 | for (long idx = 0; idx < len; ++idx) |
---|
613 | { |
---|
614 | char* name = newElts[idx][0].str(); |
---|
615 | if (name && (*name != '\0') && (*name != '_')) |
---|
616 | { |
---|
617 | Py_XDECREF(get_current_definition(name)); |
---|
618 | newElts[idx][1].import_as(name); |
---|
619 | } |
---|
620 | |
---|
621 | } |
---|
622 | |
---|
623 | PythonObject deletedElts = |
---|
624 | python_eval("list(set(_SINGULAR_IMPORTED.iterkeys()) - \ |
---|
625 | set(_SINGULAR_NEW.iterkeys()))"); |
---|
626 | len = deletedElts.size(); |
---|
627 | |
---|
628 | for (long idx = 0; idx < len; ++idx) |
---|
629 | { |
---|
630 | char* name = deletedElts[idx].str(); |
---|
631 | if (name && (*name != '\0') && (*name != '_')) |
---|
632 | killid(name, &IDROOT); |
---|
633 | } |
---|
634 | |
---|
635 | PyRun_SimpleString("_SINGULAR_IMPORTED =_SINGULAR_NEW"); |
---|
636 | PyRun_SimpleString("del _SINGULAR_NEW"); |
---|
637 | } |
---|
638 | |
---|
639 | |
---|
640 | // forward declaration |
---|
641 | int iiAddCproc(char *libname, char *procname, BOOLEAN pstatic, |
---|
642 | BOOLEAN(*func)(leftv res, leftv v)); |
---|
643 | |
---|
644 | #define ADD_C_PROC(name) iiAddCproc("", (char*)#name, FALSE, name); |
---|
645 | |
---|
646 | |
---|
647 | void pyobject_init() |
---|
648 | { |
---|
649 | blackbox *b = (blackbox*)omAlloc0(sizeof(blackbox)); |
---|
650 | b->blackbox_destroy = pyobject_destroy; |
---|
651 | b->blackbox_String = pyobject_String; |
---|
652 | b->blackbox_Init = pyobject_Init; |
---|
653 | b->blackbox_Copy = pyobject_Copy; |
---|
654 | b->blackbox_Assign = pyobject_Assign; |
---|
655 | b->blackbox_Op1 = pyobject_Op1; |
---|
656 | b->blackbox_Op2 = pyobject_Op2; |
---|
657 | b->blackbox_Op3 = pyobject_Op3; |
---|
658 | b->blackbox_OpM = pyobject_OpM; |
---|
659 | b->data = omAlloc0(newstruct_desc_size()); |
---|
660 | |
---|
661 | PythonInterpreter::init(setBlackboxStuff(b,"pyobject")); |
---|
662 | |
---|
663 | ADD_C_PROC(python_import); |
---|
664 | ADD_C_PROC(python_eval); |
---|
665 | ADD_C_PROC(python_run); |
---|
666 | } |
---|
667 | |
---|
668 | extern "C" { void mod_init() { pyobject_init(); } } |
---|
669 | |
---|