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annotate src/xdiff/xmacros.h @ 32174:f84e5db372ea v9.0.1418

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patch 9.0.1418: the included xdiff code is a bit outdated Commit: https://github.com/vim/vim/commit/5fedb8a5ab7addb584728c89e809be190de992bf Author: Yee Cheng Chin <ychin.git@gmail.com> Date: Mon Mar 20 17:30:52 2023 +0000 patch 9.0.1418: the included xdiff code is a bit outdated Problem: The included xdiff code is a bit outdated. Solution: Sync with the latest git xdiff code. (Yee Cheng Chin, closes #12181)
author Bram Moolenaar <Bram@vim.org>
date Mon, 20 Mar 2023 18:45:04 +0100
parents d5142d87f898
children 9493de63a3f6
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1 /*
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2 * LibXDiff by Davide Libenzi ( File Differential Library )
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3 * Copyright (C) 2003 Davide Libenzi
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4 *
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5 * This library is free software; you can redistribute it and/or
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6 * modify it under the terms of the GNU Lesser General Public
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7 * License as published by the Free Software Foundation; either
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8 * version 2.1 of the License, or (at your option) any later version.
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9 *
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10 * This library is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Lesser General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Lesser General Public
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16 * License along with this library; if not, see
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17 * <http://www.gnu.org/licenses/>.
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18 *
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19 * Davide Libenzi <davidel@xmailserver.org>
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20 *
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21 */
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22
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23 #if !defined(XMACROS_H)
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24 #define XMACROS_H
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25
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26
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27
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28
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29 #define XDL_MIN(a, b) ((a) < (b) ? (a): (b))
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30 #define XDL_MAX(a, b) ((a) > (b) ? (a): (b))
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31 #define XDL_ABS(v) ((v) >= 0 ? (v): -(v))
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32 #define XDL_ISDIGIT(c) ((c) >= '0' && (c) <= '9')
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33 #define XDL_ISSPACE(c) (isspace((unsigned char)(c)))
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34 #define XDL_ADDBITS(v,b) ((v) + ((v) >> (b)))
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35 #define XDL_MASKBITS(b) ((1UL << (b)) - 1)
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36 #define XDL_HASHLONG(v,b) (XDL_ADDBITS((unsigned long)(v), b) & XDL_MASKBITS(b))
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37 #define XDL_LE32_PUT(p, v) \
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38 do { \
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39 unsigned char *__p = (unsigned char *) (p); \
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40 *__p++ = (unsigned char) (v); \
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41 *__p++ = (unsigned char) ((v) >> 8); \
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42 *__p++ = (unsigned char) ((v) >> 16); \
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43 *__p = (unsigned char) ((v) >> 24); \
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44 } while (0)
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45 #define XDL_LE32_GET(p, v) \
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46 do { \
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47 unsigned char const *__p = (unsigned char const *) (p); \
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48 (v) = (unsigned long) __p[0] | ((unsigned long) __p[1]) << 8 | \
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49 ((unsigned long) __p[2]) << 16 | ((unsigned long) __p[3]) << 24; \
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50 } while (0)
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51
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52 /* Allocate an array of nr elements, returns NULL on failure */
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53 #define XDL_ALLOC_ARRAY(p, nr) \
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54 ((p) = SIZE_MAX / sizeof(*(p)) >= (size_t)(nr) \
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55 ? xdl_malloc((nr) * sizeof(*(p))) \
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56 : NULL)
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57
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58 /* Allocate an array of nr zeroed out elements, returns NULL on failure */
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59 #define XDL_CALLOC_ARRAY(p, nr) ((p) = xdl_calloc(nr, sizeof(*(p))))
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60
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61 /*
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62 * Ensure array p can accommodate at least nr elements, growing the
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63 * array and updating alloc (which is the number of allocated
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64 * elements) as necessary. Frees p and returns -1 on failure, returns
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65 * 0 on success
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66 */
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67 #define XDL_ALLOC_GROW(p, nr, alloc) \
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68 (-!((nr) <= (alloc) || \
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69 ((p) = xdl_alloc_grow_helper((p), (nr), &(alloc), sizeof(*(p))))))
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70
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71 #endif /* #if !defined(XMACROS_H) */