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Lose ensure* stuff.

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This commit is contained in:
Nicholas Marriott
2008-08-07 20:20:52 +00:00
parent 65833c2976
commit de0e1c6284
6 changed files with 47 additions and 96 deletions
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27
array.h
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@ -1,4 +1,4 @@
/* $Id: array.h,v 1.5 2008-06-20 08:36:20 nicm Exp $ */
/* $Id: array.h,v 1.6 2008-08-07 20:20:52 nicm Exp $ */
/*
* Copyright (c) 2006 Nicholas Marriott <nicm@users.sourceforge.net>
@ -28,6 +28,22 @@
#define ARRAY_ITEM(a, i) ((a)->list[i])
#define ARRAY_ITEMSIZE(a) (sizeof *(a)->list)
#define ARRAY_INITIALSPACE(a) (10 * ARRAY_ITEMSIZE(a))
#define ARRAY_ENSURE(a, n) do { \
if (SIZE_MAX - (n) < (a)->num) \
fatalx("number too big"); \
if (SIZE_MAX / ((a)->num + (n)) < ARRAY_ITEMSIZE(a)) \
fatalx("size too big"); \
if ((a)->space == 0) { \
(a)->space = ARRAY_INITIALSPACE(a); \
(a)->list = xrealloc((a)->list, 1, (a)->space); \
} \
while ((a)->space <= ((a)->num + (n)) * ARRAY_ITEMSIZE(a)) { \
(a)->list = xrealloc((a)->list, 2, (a)->space); \
(a)->space *= 2; \
} \
} while (0)
#define ARRAY_EMPTY(a) ((a) == NULL || (a)->num == 0)
#define ARRAY_LENGTH(a) ((a)->num)
@ -50,12 +66,12 @@
} while (0)
#define ARRAY_ADD(a, s) do { \
ENSURE_SIZE2((a)->list, (a)->space, (a)->num + 1, ARRAY_ITEMSIZE(a)); \
ARRAY_ENSURE(a, 1); \
(a)->list[(a)->num] = s; \
(a)->num++; \
} while (0)
#define ARRAY_INSERT(a, i, s) do { \
ENSURE_SIZE2((a)->list, (a)->space, (a)->num + 1, ARRAY_ITEMSIZE(a)); \
ARRAY_ENSURE(a, 1); \
if ((i) < (a)->num) { \
memmove((a)->list + (i) + 1, (a)->list + (i), \
ARRAY_ITEMSIZE(a) * ((a)->num - (i))); \
@ -74,7 +90,7 @@
} while (0)
#define ARRAY_EXPAND(a, n) do { \
ENSURE_SIZE2((a)->list, (a)->space, (a)->num + n, ARRAY_ITEMSIZE(a)); \
ARRAY_ENSURE(a, n); \
(a)->num += n; \
} while (0)
#define ARRAY_TRUNC(a, n) do { \
@ -85,8 +101,7 @@
} while (0)
#define ARRAY_CONCAT(a, b) do { \
ENSURE_SIZE2((a)->list, (a)->space, (a)->num + (b)->num, \
ARRAY_ITEMSIZE(a)); \
ARRAY_ENSURE(a, (b)->num); \
memcpy((a)->list + (a)->num, (b)->list, (b)->num * ARRAY_ITEMSIZE(a)) \
(a)->num += (b)->num; \
} while (0)