libbanshee/engine/array.h

   1 /*
   2  * Copyright (c) 2000-2001
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  */
  30
  31 #ifndef ARRAY_H
  32 #define ARRAY_H
  33
  34 /* A region-based growable array type */
  35
  36 struct array;
  37
  38 struct array *new_array(region r, size_t initialsize,
  39                         size_t typesize, type_t typeinfo);
  40 void *array_extend(struct array *a, int by);
  41 void array_reset(struct array *a);
  42 size_t array_length(struct array *a);
  43 void *array_data(struct array *a);
  44
  45
  46 #define DECLARE_ARRAY(name, type) \
  47 typedef struct name ## _a *name; \
  48 name new_ ## name(region r, size_t initialsize); \
  49 type *name ## _extend(name a, int by); \
  50 void name ## _reset(name a); \
  51 size_t name ## _length(name a); \
  52 type *name ## _data(name a);
  53
  54 #define DEFINE_ARRAY(name, type) \
  55 name new_ ## name(region r, size_t initialsize) \
  56 { \
  57   return (name)new_array(r, initialsize, sizeof(type), rctypeof(type)); \
  58 } \
  59 type *name ## _extend(name a, int by) \
  60 { \
  61   return array_extend((struct array *)a, by); \
  62 } \
  63 void name ## _reset(name a) \
  64 { \
  65   return array_reset((struct array *)a); \
  66 } \
  67 size_t name ## _length(name a) \
  68 { \
  69   return array_length((struct array *)a); \
  70 } \
  71 type *name ## _data(name a) \
  72 { \
  73   return array_data((struct array *)a); \
  74 }
  75
  76 #endif