| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * Pyke: the Python Kit for Extensions, mLib integration |
| 4 | * |
| 5 | * (c) 2019 Straylight/Edgeware |
| 6 | */ |
| 7 | |
| 8 | /*----- Licensing notice --------------------------------------------------* |
| 9 | * |
| 10 | * This file is part of Pyke: the Python Kit for Extensions. |
| 11 | * |
| 12 | * Pyke is free software: you can redistribute it and/or modify it under |
| 13 | * the terms of the GNU General Public License as published by the Free |
| 14 | * Software Foundation; either version 2 of the License, or (at your |
| 15 | * option) any later version. |
| 16 | * |
| 17 | * Pyke is distributed in the hope that it will be useful, but WITHOUT |
| 18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 20 | * for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with Pyke. If not, write to the Free Software Foundation, Inc., |
| 24 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 25 | */ |
| 26 | |
| 27 | /*----- Header files ------------------------------------------------------*/ |
| 28 | |
| 29 | #include "pyke-mLib.h" |
| 30 | |
| 31 | /* #undef HAVE_LONG_LONG */ |
| 32 | |
| 33 | /*----- Conversions -------------------------------------------------------*/ |
| 34 | |
| 35 | #ifndef HAVE_LONG_LONG |
| 36 | static PyObject *i32 = 0; |
| 37 | static int init_i32(void) |
| 38 | { if (!i32 && (i32 = PyInt_FromLong(32)) == 0) return (-1); return (0); } |
| 39 | #endif |
| 40 | |
| 41 | PyObject *getk64(kludge64 u) |
| 42 | { |
| 43 | #ifdef HAVE_LONG_LONG |
| 44 | return (PyLong_FromUnsignedLongLong(GET64(unsigned PY_LONG_LONG, u))); |
| 45 | #else |
| 46 | PyObject *i = 0, *j = 0, *t; |
| 47 | PyObject *rc = 0; |
| 48 | |
| 49 | if (init_i32()) goto end; |
| 50 | if ((i = PyLong_FromUnsignedLong(HI64(u))) == 0) goto end; |
| 51 | if ((t = PyNumber_InPlaceLshift(i, i32)) == 0) goto end; |
| 52 | Py_DECREF(i); i = t; |
| 53 | if ((j = PyLong_FromUnsignedLong(LO64(u))) == 0) goto end; |
| 54 | if ((t = PyNumber_InPlaceOr(i, j)) == 0) goto end; |
| 55 | # ifdef PY2 |
| 56 | Py_DECREF(i); i = t; |
| 57 | if ((t = PyNumber_Int(i)) == 0) goto end; |
| 58 | # endif |
| 59 | rc = t; |
| 60 | end: |
| 61 | Py_XDECREF(i); |
| 62 | Py_XDECREF(j); |
| 63 | return (rc); |
| 64 | #endif |
| 65 | } |
| 66 | |
| 67 | #ifdef HAVE_UINT64 |
| 68 | # define CONVu64(n) do { \ |
| 69 | kludge64 k; \ |
| 70 | uint64 t; \ |
| 71 | if (!convk64(o, &k)) goto end; \ |
| 72 | t = GET64(uint64, k); \ |
| 73 | if (t > MASK##n) OVFERR("out of range"); \ |
| 74 | *p = t; \ |
| 75 | } while (0) |
| 76 | #else |
| 77 | # define CONVu64(n) assert(!"shouldn't be possible") |
| 78 | #endif |
| 79 | |
| 80 | #define CONVU_(n) \ |
| 81 | int convu##n(PyObject *o, void *pp) \ |
| 82 | { \ |
| 83 | unsigned long u; \ |
| 84 | uint##n *p = pp; \ |
| 85 | \ |
| 86 | if (MASK##n > ULONG_MAX) \ |
| 87 | CONVu64(n); \ |
| 88 | else { \ |
| 89 | if (!convulong(o, &u)) goto end; \ |
| 90 | if (u > MASK##n) OVFERR("out of range"); \ |
| 91 | *p = u; \ |
| 92 | } \ |
| 93 | return (1); \ |
| 94 | end: \ |
| 95 | return (0); \ |
| 96 | } |
| 97 | DOUINTSZ(CONVU_) |
| 98 | |
| 99 | int convk64(PyObject *o, void *pp) |
| 100 | { |
| 101 | PyObject *i = 0; |
| 102 | int rc = 0; |
| 103 | #if HAVE_LONG_LONG |
| 104 | unsigned PY_LONG_LONG t; |
| 105 | #else |
| 106 | PyObject *t; |
| 107 | uint32 lo, hi; |
| 108 | #endif |
| 109 | |
| 110 | #if HAVE_LONG_LONG |
| 111 | if ((i = PyNumber_Long(o)) == 0) goto end; |
| 112 | t = PyLong_AsUnsignedLongLong(i); |
| 113 | if (t == (unsigned PY_LONG_LONG)-1 && PyErr_Occurred()) goto end; |
| 114 | ASSIGN64(*(kludge64 *)pp, t); |
| 115 | #else |
| 116 | if (init_i32()) goto end; |
| 117 | if ((i = PyNumber_Int(o)) == 0) goto end; |
| 118 | lo = PyInt_AsUnsignedLongMask(i); |
| 119 | if ((t = PyNumber_InPlaceRshift(i, i32)) == 0) goto end; |
| 120 | Py_DECREF(i); i = t; |
| 121 | hi = PyInt_AsUnsignedLongMask(i); |
| 122 | if ((t = PyNumber_InPlaceRshift(i, i32)) == 0) goto end; |
| 123 | Py_DECREF(i); i = t; |
| 124 | if (PyObject_IsTrue(i)) OVFERR("out of range"); |
| 125 | SET64(*(kludge64 *)pp, hi, lo); |
| 126 | #endif |
| 127 | rc = 1; |
| 128 | |
| 129 | end: |
| 130 | Py_XDECREF(i); |
| 131 | return (rc); |
| 132 | } |
| 133 | |
| 134 | /*----- That's all, folks -------------------------------------------------*/ |