Rev 3901 | Rev 4192 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3666 | mejdrech | 1 | /* |
| 3912 | mejdrech | 2 | * Copyright (c) 2009 Lukas Mejdrech |
| 3666 | mejdrech | 3 | * 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 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 13 | * documentation and/or other materials provided with the distribution. |
||
| 14 | * - The name of the author may not be used to endorse or promote products |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | /** @addtogroup net |
||
| 3912 | mejdrech | 30 | * @{ |
| 3666 | mejdrech | 31 | */ |
| 32 | |||
| 3912 | mejdrech | 33 | /** @file |
| 3666 | mejdrech | 34 | */ |
| 35 | |||
| 36 | #ifndef __GENERIC_FIELD_H__ |
||
| 37 | #define __GENERIC_FIELD_H__ |
||
| 38 | |||
| 39 | #include <errno.h> |
||
| 40 | #include <malloc.h> |
||
| 41 | #include <string.h> |
||
| 42 | #include <unistd.h> |
||
| 43 | |||
| 44 | #define GENERIC_FIELD_MAGIC_VALUE 0x55667788 |
||
| 45 | |||
| 46 | #define GENERIC_FIELD_DECLARE( name, type ) \ |
||
| 47 | \ |
||
| 48 | typedef struct name name##_t; \ |
||
| 49 | typedef name##_t * name##_ref; \ |
||
| 50 | \ |
||
| 51 | struct name{ \ |
||
| 52 | int size; \ |
||
| 53 | int next; \ |
||
| 54 | type ** items; \ |
||
| 55 | int magic; \ |
||
| 56 | }; \ |
||
| 57 | \ |
||
| 58 | int name##_add( name##_ref field, type * value ); \ |
||
| 59 | int name##_count( name##_ref field ); \ |
||
| 60 | void name##_destroy( name##_ref field ); \ |
||
| 61 | void name##_exclude_index( name##_ref field, int index ); \ |
||
| 62 | type ** name##_get_field( name##_ref field ); \ |
||
| 63 | type * name##_get_index( name##_ref field, int index ); \ |
||
| 64 | int name##_initialize( name##_ref field ); \ |
||
| 65 | int name##_is_valid( name##_ref field ); |
||
| 66 | |||
| 67 | #define GENERIC_FIELD_IMPLEMENT( name, type ) \ |
||
| 68 | \ |
||
| 69 | int name##_add( name##_ref field, type * value ){ \ |
||
| 70 | if( name##_is_valid( field )){ \ |
||
| 71 | if( field->next == ( field->size - 1 )){ \ |
||
| 72 | type ** tmp; \ |
||
| 73 | \ |
||
| 74 | tmp = ( type ** ) malloc( sizeof( type * ) * 2 * field->size ); \ |
||
| 75 | if( ! tmp ) return ENOMEM; \ |
||
| 76 | field->size *= 2; \ |
||
| 77 | memcpy( tmp, field->items, sizeof( type * ) * field->next ); \ |
||
| 78 | free( field->items ); \ |
||
| 79 | field->items = tmp; \ |
||
| 80 | } \ |
||
| 81 | field->items[ field->next ] = value; \ |
||
| 82 | ++ field->next; \ |
||
| 83 | field->items[ field->next ] = NULL; \ |
||
| 84 | return field->next - 1; \ |
||
| 85 | } \ |
||
| 86 | return EINVAL; \ |
||
| 87 | } \ |
||
| 88 | \ |
||
| 89 | int name##_count( name##_ref field ){ \ |
||
| 90 | return name##_is_valid( field ) ? field->next : -1; \ |
||
| 91 | } \ |
||
| 92 | \ |
||
| 93 | void name##_destroy( name##_ref field ){ \ |
||
| 94 | if( name##_is_valid( field )){ \ |
||
| 95 | int index; \ |
||
| 96 | \ |
||
| 97 | field->magic = 0; \ |
||
| 98 | for( index = 0; index < field->next; ++ index ){ \ |
||
| 99 | free( field->items[ index ] ); \ |
||
| 100 | } \ |
||
| 101 | free( field->items ); \ |
||
| 102 | } \ |
||
| 103 | } \ |
||
| 104 | \ |
||
| 105 | void name##_exclude_index( name##_ref field, int index ){ \ |
||
| 106 | if( name##_is_valid( field ) && ( index >= 0 ) && ( index < field->next ) && ( field->items[ index ] )){ \ |
||
| 107 | free( field->items[ index ] ); \ |
||
| 108 | field->items[ index ] = NULL; \ |
||
| 109 | } \ |
||
| 110 | } \ |
||
| 111 | \ |
||
| 112 | type * name##_get_index( name##_ref field, int index ){ \ |
||
| 113 | if( name##_is_valid( field ) && ( index >= 0 ) && ( index < field->next ) && ( field->items[ index ] )){ \ |
||
| 114 | return field->items[ index ]; \ |
||
| 115 | } \ |
||
| 116 | return NULL; \ |
||
| 117 | } \ |
||
| 118 | \ |
||
| 119 | type ** name##_get_field( name##_ref field ){ \ |
||
| 120 | return name##_is_valid( field ) ? field->items : NULL; \ |
||
| 121 | } \ |
||
| 122 | \ |
||
| 123 | int name##_initialize( name##_ref field ){ \ |
||
| 124 | if( ! field ) return EINVAL; \ |
||
| 125 | field->size = 2; \ |
||
| 126 | field->next = 0; \ |
||
| 127 | field->items = ( type ** ) malloc( sizeof( type * ) * field->size ); \ |
||
| 128 | if( ! field->items ) return ENOMEM; \ |
||
| 129 | field->items[ field->next ] = NULL; \ |
||
| 3901 | mejdrech | 130 | field->magic = GENERIC_FIELD_MAGIC_VALUE; \ |
| 3666 | mejdrech | 131 | return EOK; \ |
| 132 | } \ |
||
| 133 | \ |
||
| 134 | int name##_is_valid( name##_ref field ){ \ |
||
| 3901 | mejdrech | 135 | return field && ( field->magic == GENERIC_FIELD_MAGIC_VALUE ); \ |
| 3666 | mejdrech | 136 | } |
| 137 | |||
| 138 | #endif |
||
| 139 | |||
| 140 | /** @} |
||
| 141 | */ |
||
| 142 |