5 * (c) 2005 Straylight/Edgeware
8 /*----- Licensing notice --------------------------------------------------*
10 * This file is part of the Python interface to mLib.
12 * mLib/Python is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * mLib/Python is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with mLib/Python; if not, write to the Free Software Foundation,
24 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 /*----- Header files ------------------------------------------------------*/
33 #include <mLib/darray.h>
34 #include <mLib/dstr.h>
40 /*----- Data structures ---------------------------------------------------*/
42 DA_DECL(obj_v, PyObject *);
44 typedef struct da_pyobj {
48 #define DA_PYCHECK(o) PyObject_TypeCheck((o), &da_pytype)
49 #define DA_V(o) (&((da_pyobj *)(o))->v)
51 typedef struct daiter_pyobj {
56 #define DAITER_DA(obj) (((daiter_pyobj *)(obj))->da)
57 #define DAITER_V(obj) DA_V(DAITER_DA(obj))
58 #define DAITER_I(obj) (((daiter_pyobj *)(obj))->i)
60 static int getseq(PyObject **pseq, PyObject ***v, size_t *n)
62 PyObject *seq = *pseq;
64 if (!seq || seq == Py_None) {
68 } else if (DA_PYCHECK(seq)) {
70 *n = DA_LEN(DA_V(seq));
72 } else if ((seq = PySequence_Fast(seq, "expected iterable")) == 0)
76 *v = PySequence_Fast_ITEMS(seq);
77 *n = PySequence_Fast_GET_SIZE(seq);
82 static void range_inc(PyObject **v, PyObject **vl)
83 { while (v < vl) { Py_INCREF(*v); v++; } }
84 static void range_dec(PyObject **v, PyObject **vl)
85 { if (v) { while (v < vl) { Py_DECREF(*v); v++; } } }
86 static void range_copy(PyObject ***gv, PyObject ***gvl)
88 size_t n = *gvl - *gv;
89 size_t sz = sizeof(PyObject *) * n;
91 if (!n) { *gv = *gvl = 0; return; }
98 static PyObject *abstract_pynew(PyTypeObject *ty,
99 PyObject *hunoz, PyObject *hukairz)
101 PyErr_SetString(PyExc_TypeError, "can't instantiate this type");
105 /*----- Iterator ----------------------------------------------------------*/
107 static PyObject *daiter_pynext(PyObject *me)
111 if (DAITER_I(me) >= DA_LEN(DAITER_V(me))) return (0);
112 x = DA(DAITER_V(me))[DAITER_I(me)]; DAITER_I(me)++; RETURN_OBJ(x);
115 static void daiter_pydealloc(PyObject *me)
116 { Py_DECREF(DAITER_DA(me)); PyObject_DEL(me); }
118 PyTypeObject daiter_pytype = {
119 PyObject_HEAD_INIT(0) 0, /* Header */
120 "mLib.ArrayIter", /* @tp_name@ */
121 sizeof(daiter_pyobj), /* @tp_basicsize@ */
122 0, /* @tp_itemsize@ */
124 daiter_pydealloc, /* @tp_dealloc@ */
126 0, /* @tp_getattr@ */
127 0, /* @tp_setattr@ */
128 0, /* @tp_compare@ */
130 0, /* @tp_as_number@ */
131 0, /* @tp_as_sequence@ */
132 0, /* @tp_as_mapping@ */
136 0, /* @tp_getattro@ */
137 0, /* @tp_setattro@ */
138 0, /* @tp_as_buffer@ */
139 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
145 0, /* @tp_traverse@ */
147 0, /* @tp_richcompare@ */
148 0, /* @tp_weaklistoffset@ */
149 PyObject_SelfIter, /* @tp_iter@ */
150 daiter_pynext, /* @tp_iternexr@ */
151 0, /* @tp_methods@ */
152 0, /* @tp_members@ */
156 0, /* @tp_descr_get@ */
157 0, /* @tp_descr_set@ */
158 0, /* @tp_dictoffset@ */
160 PyType_GenericAlloc, /* @tp_alloc@ */
161 abstract_pynew, /* @tp_new@ */
166 /*----- Main array code ---------------------------------------------------*/
168 static void da_doinsert(PyObject *me, PyObject **items, size_t n,
169 size_t start, size_t end)
171 PyObject **v, **gv, **gvl;
172 obj_v *da = DA_V(me);
177 gv = v + start; gvl = v + end; range_copy(&gv, &gvl);
178 if (start < DA_LEN(da) - end) {
182 DA_UNSAFE_SLIDE(da, off);
183 memmove(v, v + off, sizeof(PyObject *) * start);
186 memmove(v + off, v, sizeof(PyObject *) * start);
187 DA_UNSAFE_UNSLIDE(da, off);
193 memmove(v + end + off, v + end,
194 sizeof(PyObject *) * (DA_LEN(da) - end));
197 memmove(v + end - off, v + end,
198 sizeof(PyObject *) * (DA_LEN(da) - end));
199 DA_UNSAFE_SHRINK(da, off);
201 DA_UNSAFE_EXTEND(da, off);
206 memcpy(v, items, sizeof(PyObject *) * n);
215 static int da_insert(PyObject *me, PyObject *seq, int start, int end)
220 if (0 > start || start > end || end > DA_LEN(DA_V(me))) {
221 PyErr_SetString(PyExc_IndexError, "bad slice");
224 if (getseq(&seq, &items, &n)) return (-1);
225 da_doinsert(me, items, n, start, end);
230 static PyObject *da_new(PyTypeObject *ty)
232 da_pyobj *me = (da_pyobj *)ty->tp_alloc(ty, 0);
234 return ((PyObject *)me);
237 static PyObject *da_pynew(PyTypeObject *ty, PyObject *arg, PyObject *kw)
238 { return (da_new(ty)); }
239 static int da_pyinit(PyObject *me, PyObject *arg, PyObject *kw)
242 static char *kwlist[] = { "sequence", 0 };
244 if (!PyArg_ParseTupleAndKeywords(arg, kw, "|O:new", kwlist, &init) ||
245 (init && da_insert((PyObject *)me, init, 0, 0)))
250 static void da_pydealloc(PyObject *me)
253 PyObject **v = DA(DA_V(me));
254 size_t n = DA_LEN(DA_V(me));
256 for (i = 0; i < n; i++) Py_DECREF(v[i]);
257 DA_DESTROY(DA_V(me));
260 static int da_pylength(PyObject *me)
261 { return (DA_LEN(DA_V(me))); }
263 static int da_pytraverse(PyObject *me, visitproc proc, void *arg)
266 PyObject **v = DA(DA_V(me));
267 size_t n = DA_LEN(DA_V(me));
270 for (i = 0; i < n; i++) {
271 if ((err = proc(v[i], arg)) != 0)
277 static int da_pyclear(PyObject *me)
279 range_dec(DA(DA_V(me)), DA(DA_V(me)) + DA_LEN(DA_V(me)));
284 static PyObject *da_pyconcat(PyObject *me, PyObject *other)
286 PyObject *x = da_new(&da_pytype);
287 PyObject **items = DA(DA_V(me));
288 size_t n = DA_LEN(DA_V(me));
290 da_doinsert(x, items, n, 0, 0);
291 if (da_insert(x, other, n, n)) {
298 static PyObject *da_pyrepeat(PyObject *me, int times)
300 PyObject *x = da_new(&da_pytype);
301 PyObject **items = DA(DA_V(me)), **dest;
302 size_t n = DA_LEN(DA_V(me));
305 DA_ENSURE(DA_V(x), n * times);
306 DA_UNSAFE_EXTEND(DA_V(x), n * times);
307 for (i = 0, dest = DA(DA_V(x)); i < times; i++, dest += n)
308 memcpy(dest, items, n * sizeof(PyObject *));
309 range_inc(DA(DA_V(x)), DA(DA_V(x)) + n * times);
313 static PyObject *da_pygetitem(PyObject *me, int i)
317 if (i < 0 || i >= DA_LEN(DA_V(me))) {
318 PyErr_SetString(PyExc_IndexError, "index out of range");
326 static PyObject *da_pygetslice(PyObject *me, int i, int j)
330 if (i < 0 || j < i || DA_LEN(DA_V(me)) < j) {
331 PyErr_SetString(PyExc_IndexError, "bad slice");
334 x = da_new(&da_pytype);
335 da_doinsert(x, DA(DA_V(me)) + i, j - i, 0, 0);
339 static int da_pyputitem(PyObject *me, int i, PyObject *x)
343 if (i < 0 || i >= DA_LEN(DA_V(me))) {
344 PyErr_SetString(PyExc_IndexError, "index out of range");
347 p = DA(DA_V(me)) + i;
354 static int da_pyputslice(PyObject *me, int i, int j, PyObject *x)
355 { return (da_insert(me, x, i, j)); }
357 static int da_pycontainsp(PyObject *me, PyObject *x)
359 PyObject **items = DA(DA_V(me));
360 size_t n = DA_LEN(DA_V(me));
364 for (i = 0; i < n; i++) {
365 if (PyObject_Cmp(items[i], x, &rc))
373 static PyObject *da_pyrepr(PyObject *me)
376 PyObject *s, *rc = 0;
381 dstr_puts(&d, "Array([");
382 for (i = 0; i < DA_LEN(DA_V(me)); i++) {
383 if ((s = PyObject_Repr(DA(DA_V(me))[i])) == 0 ||
384 PyString_AsStringAndSize(s, &p, &n)) {
388 if (i) dstr_puts(&d, ", ");
393 rc = PyString_FromStringAndSize(d.buf, d.len);
399 static PyObject *da_pyappend(PyObject *me, PyObject *seq)
401 size_t n = DA_LEN(DA_V(me));
402 if (da_insert(me, seq, n, n)) return (0);
406 static PyObject *da_pyiprepeat(PyObject *me, int times)
408 PyObject **items, **dest;
409 size_t n = DA_LEN(DA_V(me));
413 PyErr_SetString(PyExc_ValueError, "multiplier must be nonnegative");
417 items = DA(DA_V(me));
418 range_dec(items, items + n);
423 DA_ENSURE(DA_V(me), n * times);
424 items = DA(DA_V(me));
425 for (i = 0, dest = items + n; i < times; i++, dest += n)
426 memcpy(dest, items, n * sizeof(PyObject *));
427 range_inc(items + n, dest);
428 DA_UNSAFE_EXTEND(DA_V(me), n * times);
432 static PyObject *da_pyget(PyObject *me, PyObject *index)
434 if (PySlice_Check(index)) {
435 int start, stop, step, len;
440 if (PySlice_GetIndicesEx((PySliceObject *)index, DA_LEN(DA_V(me)),
441 &start, &stop, &step, &len))
443 if (step == 1) return (da_pygetslice(me, start, stop));
444 v = da_new(&da_pytype);
445 DA_ENSURE(DA_V(v), len);
447 ww = DA(DA_V(me)) + start;
448 DA_UNSAFE_EXTEND(DA_V(v), len);
452 vv++; ww += step; len--;
454 return ((PyObject *)v);
458 if ((i = PyInt_AsLong(index)) == -1 && PyErr_Occurred()) return (0);
459 return (da_pygetitem(me, i));
463 static int da_pyput(PyObject *me, PyObject *index, PyObject *x)
465 if (PySlice_Check(index)) {
466 int start, stop, step, len;
472 if (PySlice_GetIndicesEx((PySliceObject *)index, DA_LEN(DA_V(me)),
473 &start, &stop, &step, &len))
475 if (step == 1) return (da_insert(me, x, start, stop));
476 if (getseq(&x, &vv, &n)) return (-1);
478 PyErr_SetString(PyExc_ValueError, "wrong number of items");
482 g = gg = xmalloc(len * sizeof(PyObject *));
483 ww = DA(DA_V(me)) + start;
485 *gg++ = *ww; *ww = *vv++;
496 if ((i = PyInt_AsLong(index)) == -1 && PyErr_Occurred()) return (-1);
497 return (da_pyputitem(me, i, x));
501 static PyObject *da_pyiter(PyObject *me)
503 daiter_pyobj *i = PyObject_NEW(daiter_pyobj, &daiter_pytype);
504 i->da = me; Py_INCREF(me);
506 return ((PyObject *)i);
509 static PyObject *dameth_push(PyObject *me, PyObject *arg)
513 if (!PyArg_ParseTuple(arg, "O:push", &x)) return (0);
515 DA_PUSH(DA_V(me), x);
519 static PyObject *dameth_pop(PyObject *me, PyObject *arg)
523 if (!PyArg_ParseTuple(arg, ":pop")) return (0);
525 x = DA_POP(DA_V(me));
526 CATCH switch (exc_type) {
528 PyErr_SetString(PyExc_ValueError, "stack underflow");
536 static PyObject *dameth_unshift(PyObject *me, PyObject *arg)
540 if (!PyArg_ParseTuple(arg, "O:unshift", &x)) return (0);
542 DA_UNSHIFT(DA_V(me), x);
546 static PyObject *dameth_shift(PyObject *me, PyObject *arg)
550 if (!PyArg_ParseTuple(arg, ":shift")) return (0);
552 x = DA_SHIFT(DA_V(me));
553 CATCH switch (exc_type) {
555 PyErr_SetString(PyExc_ValueError, "stack underflow");
563 static PyObject *dameth_tidy(PyObject *me, PyObject *arg)
565 if (!PyArg_ParseTuple(arg, ":tidy")) return (0);
570 static PyMethodDef da_pymethods[] = {
571 #define METHNAME(func) dameth_##func
572 METH (push, "A.push(X): [A, B, ..., W], X -> [A, B, ..., W, X]")
573 METH (pop, "A.pop() -> X: [A, B, ..., W, X] -> [A, B, ..., W]")
574 METH (unshift, "A.unshift(X): [A, B, ..., W], X -> [X, A, ..., W]")
575 METH (shift, "A.shift() -> X: [X, A, ..., W] -> [A, ..., W], X")
576 METH (tidy, "A.tidy()")
581 static PySequenceMethods da_pysequence = {
582 da_pylength, /* @sq_length@ */
583 da_pyconcat, /* @sq_concat@ */
584 da_pyrepeat, /* @sq_repeat@ */
585 da_pygetitem, /* @sq_item@ */
586 da_pygetslice, /* @sq_slice@ */
587 da_pyputitem, /* @sq_ass_item@ */
588 da_pyputslice, /* @sq_ass_slice@ */
589 da_pycontainsp, /* @sq_contains@ */
590 da_pyappend, /* @sq_inplace_concat@ */
591 da_pyiprepeat /* @sq_inplace_repeat@ */
594 static PyMappingMethods da_pymapping = {
595 da_pylength, /* @mp_length@ */
596 da_pyget, /* @mp_subscript@ */
597 da_pyput /* @mp_ass_subscript@ */
600 PyTypeObject da_pytype = {
601 PyObject_HEAD_INIT(0) 0, /* Header */
602 "mLib.Array", /* @tp_name@ */
603 sizeof(da_pyobj), /* @tp_basicsize@ */
604 0, /* @tp_itemsize@ */
606 da_pydealloc, /* @tp_dealloc@ */
608 0, /* @tp_getattr@ */
609 0, /* @tp_setattr@ */
610 0, /* @tp_compare@ */
611 da_pyrepr, /* @tp_repr@ */
612 0, /* @tp_as_number@ */
613 &da_pysequence, /* @tp_as_sequence@ */
614 &da_pymapping, /* @tp_as_mapping@ */
617 &da_pyrepr, /* @tp_str@ */
618 0, /* @tp_getattro@ */
619 0, /* @tp_setattro@ */
620 0, /* @tp_as_buffer@ */
621 Py_TPFLAGS_DEFAULT | /* @tp_flags@ */
625 "Double-ended array type.",
627 da_pytraverse, /* @tp_traverse@ */
628 da_pyclear, /* @tp_clear@ */
629 0, /* @tp_richcompare@ */
630 0, /* @tp_weaklistoffset@ */
631 da_pyiter, /* @tp_iter@ */
632 0, /* @tp_iternext@ */
633 da_pymethods, /* @tp_methods@ */
634 0, /* @tp_members@ */
638 0, /* @tp_descr_get@ */
639 0, /* @tp_descr_set@ */
640 0, /* @tp_dictoffset@ */
641 da_pyinit, /* @tp_init@ */
642 PyType_GenericAlloc, /* @tp_alloc@ */
643 da_pynew, /* @tp_new@ */
648 /*----- Initialization ----------------------------------------------------*/
650 void da_pysetup(void)
651 { PyType_Ready(&da_pytype); PyType_Ready(&daiter_pytype); }
653 /*----- That's all, folks -------------------------------------------------*/