Module: PyCall::LibPython::Helpers

Defined in:
ext/pycall/pycall.c

Class Method Summary collapse

Class Method Details

.call_object(*args) ⇒ Object 



929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
 
# File 'ext/pycall/pycall.c', line 929

static VALUE
pycall_libpython_helpers_m_call_object(int argc, VALUE *argv, VALUE mod)
{
  VALUE pyptr;
  PyObject *pyobj;

  if (argc < 1) {
    rb_raise(rb_eArgError, "too few arguments (%d for >=1)", argc);
  }

  pyptr = argv[0];
  if (!is_pycall_pyptr(pyptr)) {
    rb_raise(rb_eTypeError, "PyCall::PyPtr is required");
  }

  pyobj = get_pyobj_ptr(pyptr);
  if (!Py_API(PyCallable_Check)(pyobj)) {
    rb_raise(rb_eTypeError, "Non-callable Python object was given");
  }

  if (argc == 1) {
    return pycall_call_python_callable(pyobj, 0, NULL);
  }
  else {
    return pycall_call_python_callable(pyobj, argc - 1, argv + 1);
  }
}

.callable?(pyptr) ⇒ Boolean

Returns:

  • (Boolean) 


913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
 
# File 'ext/pycall/pycall.c', line 913

static VALUE
pycall_libpython_helpers_m_callable_p(VALUE mod, VALUE pyptr)
{
  PyObject *pyobj;
  int res;

  if (!is_pycall_pyptr(pyptr)) {
    rb_raise(rb_eTypeError, "PyCall::PyPtr is required");
  }

  pyobj = get_pyobj_ptr(pyptr);

  res = Py_API(PyCallable_Check)(pyobj);
  return res ? Qtrue : Qfalse;
}

.compare(op, pyptr_a, pyptr_b) ⇒ Object 



773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
 
# File 'ext/pycall/pycall.c', line 773

static VALUE
pycall_libpython_helpers_m_compare(VALUE mod, VALUE op, VALUE pyptr_a, VALUE pyptr_b)
{
  PyObject *pyobj_a, *pyobj_b, *res;
  int opid;

  opid = pycall_rich_compare_opid(op);

  if (!is_pycall_pyptr(pyptr_a)) {
    rb_raise(rb_eTypeError, "unexpected 2nd argument type %s (expected PyCall::PyPtr)", rb_class2name(CLASS_OF(pyptr_a)));
  }
  if (!is_pycall_pyptr(pyptr_b)) {
    rb_raise(rb_eTypeError, "unexpected 3rd argument type %s (expected PyCall::PyPtr)", rb_class2name(CLASS_OF(pyptr_b)));
  }

  pyobj_a = get_pyobj_ptr(pyptr_a);
  pyobj_b = get_pyobj_ptr(pyptr_b);

  res = Py_API(PyObject_RichCompare)(pyobj_a, pyobj_b, opid);
  if (!res) {
    pycall_pyerror_fetch_and_raise("PyObject_RichCompare in pycall_libpython_helpers_m_compare");
  }
  VALUE obj = pycall_pyobject_to_ruby(res);
  pycall_Py_DecRef(res);
  return obj;
}

.define_wrapper_method(wrapper, name) ⇒ Object 



1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
 
# File 'ext/pycall/pycall.c', line 1132

static VALUE
pycall_libpython_helpers_m_define_wrapper_method(VALUE mod, VALUE wrapper, VALUE name)
{
  VALUE pyptr;
  PyObject *pyobj, *attr;
  char *name_cstr;

  pyptr = rb_attr_get(wrapper, rb_intern("@__pyptr__"));
  if (NIL_P(pyptr) || !is_pycall_pyptr(pyptr)) {
    rb_raise(rb_eTypeError, "Wrong wrapper object is given");
  }

  pyobj = get_pyobj_ptr(pyptr);

  if (RB_TYPE_P(name, T_SYMBOL)) {
    name = rb_sym_to_s(name);
  }

  name_cstr = StringValueCStr(name);
  if (name_cstr[RSTRING_LEN(name) - 1] == '=') {
    name_cstr[RSTRING_LEN(name) - 1] = '\0';
    attr = Py_API(PyObject_GetAttrString)(pyobj, name_cstr);
    name_cstr[RSTRING_LEN(name) - 1] = '=';
  }
  else {
    attr = Py_API(PyObject_GetAttrString)(pyobj, name_cstr);
  }
  if (!attr) {
    pycall_pyerror_fetch_and_raise("PyObject_GetAttrString in pycall_libpython_helpers_m_define_wrapper_method");
  }

  pycall_Py_DecRef(attr);
  rb_define_singleton_method(wrapper, name_cstr, pycall_pyobject_wrapper_wrapper_method, -1);

  return Qnil;
}

.delattr(pyptr, name) ⇒ Object 



891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
 
# File 'ext/pycall/pycall.c', line 891

static VALUE
pycall_libpython_helpers_m_delattr(VALUE mod, VALUE pyptr, VALUE name)
{
  PyObject *pyobj;

  if (!is_pycall_pyptr(pyptr)) {
    rb_raise(rb_eTypeError, "PyCall::PyPtr is required");
  }

  pyobj = get_pyobj_ptr(pyptr);

  if (RB_TYPE_P(name, T_SYMBOL)) {
    name = rb_sym_to_s(name);
  }

  if (Py_API(PyObject_DelAttrString)(pyobj, StringValueCStr(name)) == -1) {
    pycall_pyerror_fetch_and_raise("PyObject_DelAttrString");
  }

  return Qnil;
}

.delitem(pyptr, key) ⇒ Object 



1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
 
# File 'ext/pycall/pycall.c', line 1243

static VALUE
pycall_libpython_helpers_m_delitem(VALUE mod, VALUE pyptr, VALUE key)
{
  PyObject *pyobj, *pyobj_key;
  int res;

  pyobj = check_get_pyobj_ptr(pyptr, NULL);
  pyobj_key = pycall_convert_index(key);

  res = Py_API(PyObject_DelItem)(pyobj, pyobj_key);
  pycall_Py_DecRef(pyobj_key);
  if (res == -1) {
    pycall_pyerror_fetch_and_raise("PyObject_DelItem");
  }

  return Qnil;
}

.dict_contains(pyptr, key) ⇒ Object 



1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
 
# File 'ext/pycall/pycall.c', line 1276

static VALUE
pycall_libpython_helpers_m_dict_contains(VALUE mod, VALUE pyptr, VALUE key)
{
  PyObject *pyobj, *pyobj_key;
  int res;

  pyobj = check_get_pyobj_ptr(pyptr, Py_API(PyDict_Type));
  pyobj_key = pycall_pyobject_from_ruby(key);
  res = Py_API(PyDict_Contains)(pyobj, pyobj_key);
  pycall_Py_DecRef(pyobj_key);
  if (res == -1) {
    pycall_pyerror_fetch_and_raise("PyDict_Contains");
  }

  return res ? Qtrue : Qfalse;
}

.dict_each(pyptr) ⇒ Object 



1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
 
# File 'ext/pycall/pycall.c', line 1293

static VALUE
pycall_libpython_helpers_m_dict_each(VALUE mod, VALUE pyptr)
{
  PyObject *pyobj, *pyobj_key, *pyobj_value;
  Py_ssize_t pos;

  pyobj = check_get_pyobj_ptr(pyptr, Py_API(PyDict_Type));

  pos = 0;
  while (Py_API(PyDict_Next)(pyobj, &pos, &pyobj_key, &pyobj_value)) {
    VALUE key, value;
    key = pycall_pyobject_to_ruby(pyobj_key);
    value = pycall_pyobject_to_ruby(pyobj_value);
    rb_yield(rb_assoc_new(key, value));
  }

  return Qnil;
}

.getattr(*args) ⇒ Object 



828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
 
# File 'ext/pycall/pycall.c', line 828

static VALUE
pycall_libpython_helpers_m_getattr(int argc, VALUE *argv, VALUE mod)
{
  VALUE pyptr, name, default_value;

  if (rb_scan_args(argc, argv, "21", &pyptr, &name, &default_value) == 2) {
    default_value = Qundef;
  }

  if (!is_pycall_pyptr(pyptr)) {
    rb_raise(rb_eTypeError, "PyCall::PyPtr is required");
  }

  if (RB_TYPE_P(name, T_SYMBOL)) {
    name = rb_sym_to_s(name);
  }

  return pycall_getattr_default(pyptr, StringValueCStr(name), default_value);
}

.getitem(pyptr, key) ⇒ Object 



1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
 
# File 'ext/pycall/pycall.c', line 1198

static VALUE
pycall_libpython_helpers_m_getitem(VALUE mod, VALUE pyptr, VALUE key)
{
  PyObject *pyobj, *pyobj_key, *pyobj_v;
  VALUE obj;

  if (!is_pycall_pyptr(pyptr)) {
    rb_raise(rb_eTypeError, "PyCall::PyPtr is required");
  }

  pyobj = get_pyobj_ptr(pyptr);

  pyobj_key = pycall_convert_index(key);

  pyobj_v = Py_API(PyObject_GetItem)(pyobj, pyobj_key);
  pycall_Py_DecRef(pyobj_key);
  if (!pyobj_v) {
    pycall_pyerror_fetch_and_raise("PyObject_GetItem in pycall_libpython_helpers_m_getitem");
  }

  obj = pycall_pyobject_to_ruby(pyobj_v);
  pycall_Py_DecRef(pyobj_v);
  return obj;
}

.hasattr?(pyptr, name) ⇒ Boolean

Returns:

  • (Boolean) 


848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
 
# File 'ext/pycall/pycall.c', line 848

static VALUE
pycall_libpython_helpers_m_hasattr_p(VALUE mod, VALUE pyptr, VALUE name)
{
  PyObject *pyobj;
  int res;

  if (!is_pycall_pyptr(pyptr)) {
    rb_raise(rb_eTypeError, "PyCall::PyPtr is required");
  }

  pyobj = get_pyobj_ptr(pyptr);

  if (RB_TYPE_P(name, T_SYMBOL)) {
    name = rb_sym_to_s(name);
  }

  res = Py_API(PyObject_HasAttrString)(pyobj, StringValueCStr(name));
  return res ? Qtrue : Qfalse;
}

.import_module(*args) ⇒ Object 



721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
 
# File 'ext/pycall/pycall.c', line 721

static VALUE
pycall_libpython_helpers_m_import_module(int argc, VALUE *argv, VALUE mod)
{
  VALUE name, globals, locals, fromlist, level;
  char const *name_cstr;

  rb_scan_args(argc, argv, "14", &name, &globals, &locals, &fromlist, &level);

  if (RB_TYPE_P(name, T_SYMBOL)) {
    name = rb_sym_to_s(name);
  }

  name_cstr = StringValueCStr(name);

  if (argc == 1) {
    return pycall_import_module(name_cstr);
  }

  if (argc == 5) {
    level = rb_check_to_integer(level, "to_int");
  }
  else {
    /* TODO: set the default level to 0 */
  }

  return pycall_import_module_level(name_cstr, globals, locals, fromlist, NUM2INT(level));
}

.sequence_contains(pyptr, key) ⇒ Object 



1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
 
# File 'ext/pycall/pycall.c', line 1312

static VALUE
pycall_libpython_helpers_m_sequence_contains(VALUE mod, VALUE pyptr, VALUE key)
{
  PyObject *pyobj, *pyobj_key;
  int res;

  pyobj = check_get_pyobj_ptr(pyptr, NULL);
  if (!Py_API(PySequence_Check)(pyobj))
    rb_raise(rb_eTypeError, "unexpected Python type %s (expected a Python sequence object)", Py_TYPE(pyobj)->tp_name);

  pyobj_key = pycall_pyobject_from_ruby(key);
  res = Py_API(PySequence_Contains)(pyobj, pyobj_key);
  pycall_Py_DecRef(pyobj_key);
  if (res == -1) {
    pycall_pyerror_fetch_and_raise("PySequence_Contains");
  }

  return res ? Qtrue : Qfalse;
}

.sequence_each(pyptr) ⇒ Object 



1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
 
# File 'ext/pycall/pycall.c', line 1332

static VALUE
pycall_libpython_helpers_m_sequence_each(VALUE mod, VALUE pyptr)
{
  PyObject *pyobj, *pyobj_iter, *pyobj_item;

  pyobj = check_get_pyobj_ptr(pyptr, NULL);
  if (!Py_API(PySequence_Check)(pyobj))
    rb_raise(rb_eTypeError, "unexpected Python type %s (expected a Python sequence object)", Py_TYPE(pyobj)->tp_name);

  pyobj_iter = Py_API(PyObject_GetIter)(pyobj);
  if (!pyobj_iter) {
    pycall_pyerror_fetch_and_raise("PyObject_GetIter in pycall_libpython_helpers_m_sequence_each");
  }

  while ((pyobj_item = Py_API(PyIter_Next)(pyobj_iter))) {
    rb_yield(pycall_pyobject_to_ruby(pyobj_item));
    pycall_Py_DecRef(pyobj_item);
  }

  pycall_Py_DecRef(pyobj_iter);

  if (Py_API(PyErr_Occurred)() != NULL) {
    pycall_pyerror_fetch_and_raise("checking error just in case at the end of pycall_libpython_helpers_m_sequence_each");
  }

  return Qnil;
}

.setattr(pyptr, name, val) ⇒ Object 



868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
 
# File 'ext/pycall/pycall.c', line 868

static VALUE
pycall_libpython_helpers_m_setattr(VALUE mod, VALUE pyptr, VALUE name, VALUE val)
{
  PyObject *pyobj, *pyval;

  if (!is_pycall_pyptr(pyptr)) {
    rb_raise(rb_eTypeError, "PyCall::PyPtr is required");
  }

  pyobj = get_pyobj_ptr(pyptr);

  if (RB_TYPE_P(name, T_SYMBOL)) {
    name = rb_sym_to_s(name);
  }

  pyval = pycall_pyobject_from_ruby(val);
  if (Py_API(PyObject_SetAttrString)(pyobj, StringValueCStr(name), pyval) == -1) {
    pycall_pyerror_fetch_and_raise("PyObject_SetAttrString");
  }

  return Qnil;
}

.setitem(pyptr, key, v) ⇒ Object 



1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
 
# File 'ext/pycall/pycall.c', line 1223

static VALUE
pycall_libpython_helpers_m_setitem(VALUE mod, VALUE pyptr, VALUE key, VALUE v)
{
  PyObject *pyobj, *pyobj_key, *pyobj_value;
  int res;

  pyobj = check_get_pyobj_ptr(pyptr, NULL);
  pyobj_key = pycall_convert_index(key);
  pyobj_value = pycall_pyobject_from_ruby(v);

  res = Py_API(PyObject_SetItem)(pyobj, pyobj_key, pyobj_value);
  pycall_Py_DecRef(pyobj_key);
  pycall_Py_DecRef(pyobj_value);
  if (res == -1) {
    pycall_pyerror_fetch_and_raise("PyObject_SetItem in pycall_libpython_helpers_m_setitem");
  }

  return v;
}

.str(pyptr) ⇒ Object 



1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
 
# File 'ext/pycall/pycall.c', line 1261

static VALUE
pycall_libpython_helpers_m_str(VALUE mod, VALUE pyptr)
{
  PyObject *pyobj, *pyobj_str;

  pyobj = check_get_pyobj_ptr(pyptr, NULL);

  pyobj_str = Py_API(PyObject_Str)(pyobj);
  if (!pyobj_str) {
    pycall_pyerror_fetch_and_raise("PyObject_Str");
  }

  return pycall_pyobject_to_ruby(pyobj_str);
}

.unicode_literals? ⇒ Boolean

PyCall::Helpers ====

Returns:

  • (Boolean) 


678
679
680
681
682
 
# File 'ext/pycall/pycall.c', line 678

static VALUE
pycall_libpython_helpers_m_unicode_literals_p(VALUE mod)
{
  return python_is_unicode_literals ? Qtrue : Qfalse;
}