This file is indexed.

/usr/include/eina-1/eina/eina_rbtree.h is in libeina-dev 1.8.6-2.5build1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
/* EINA - EFL data type library
 * Copyright (C) 2008 Cedric Bail
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library;
 * if not, see <http://www.gnu.org/licenses/>.
 */

#ifndef EINA_RBTREE_H__
#define EINA_RBTREE_H__

#include <stdlib.h>

#include "eina_types.h"
#include "eina_error.h"
#include "eina_iterator.h"

/**
 * @addtogroup Eina_Rbtree_Group Red-Black tree
 *
 * @brief These functions provide Red-Black trees management.
 *
 * For a brief description look at http://en.wikipedia.org/wiki/Red-black_tree .
 * This code is largely inspired from a tutorial written by Julienne Walker at :
 * http://eternallyconfuzzled.com/tuts/datastructures/jsw_tut_rbtree.aspx . The
 * main difference is that this set of function never allocate any data, making
 * them particularly useful for memory management.
 */

/**
 * @addtogroup Eina_Data_Types_Group Data Types
 *
 * @{
 */

/**
 * @addtogroup Eina_Containers_Group Containers
 *
 * @{
 */

/**
 * @defgroup Eina_Rbtree_Group Red-Black tree
 *
 * @{
 */

/**
 * @typedef Eina_Rbtree_Color
 * node color.
 */
typedef enum {
   EINA_RBTREE_RED,
   EINA_RBTREE_BLACK
} Eina_Rbtree_Color;

/**
 * @typedef Eina_Rbtree_Direction
 * walk direction.
 */
typedef enum {
   EINA_RBTREE_LEFT = 0,
   EINA_RBTREE_RIGHT = 1
} Eina_Rbtree_Direction;

/**
 * @typedef Eina_Rbtree
 * Type for a Red-Black tree node. It should be inlined into user's type.
 */
typedef struct _Eina_Rbtree Eina_Rbtree;
struct _Eina_Rbtree
{
   Eina_Rbtree      *son[2];

   unsigned int color : 1;
};

/**
 * @def EINA_RBTREE
 * recommended way to declare the inlined Eina_Rbtree in your type.
 *
 * @code
 * struct my_type {
 *    EINA_RBTREE;
 *    int my_value;
 *    char *my_name;
 * };
 * @endcode
 *
 * @see EINA_RBTREE_GET()
 */
#define EINA_RBTREE Eina_Rbtree __rbtree

/**
 * @def EINA_RBTREE_GET
 * access the inlined node if it was created with #EINA_RBTREE.
 */
#define EINA_RBTREE_GET(Rbtree) (&((Rbtree)->__rbtree))

/**
 * @def EINA_RBTREE_CONTAINER_GET
 * find back the container of an red black tree.
 */
#define EINA_RBTREE_CONTAINER_GET(Ptr, Type) ((Type *)((char *)Ptr - offsetof(Type, __rbtree)))

/**
 * @typedef Eina_Rbtree_Cmp_Node_Cb
 * Function used compare two nodes and see which direction to navigate.
 */
typedef Eina_Rbtree_Direction (*Eina_Rbtree_Cmp_Node_Cb)(const Eina_Rbtree *left, const Eina_Rbtree *right, void *data);

/**
 * @def EINA_RBTREE_CMP_NODE_CB
 * Cast using #Eina_Rbtree_Cmp_Node_Cb
 */
#define EINA_RBTREE_CMP_NODE_CB(Function) ((Eina_Rbtree_Cmp_Node_Cb)Function)

/**
 * @typedef Eina_Rbtree_Cmp_Key_Cb
 * Function used compare node with a given key of specified length.
 */
typedef int (*Eina_Rbtree_Cmp_Key_Cb)(const Eina_Rbtree *node, const void *key, int length, void *data);
/**
 * @def EINA_RBTREE_CMP_KEY_CB
 * Cast using #Eina_Rbtree_Cmp_Key_Cb
 */
#define EINA_RBTREE_CMP_KEY_CB(Function) ((Eina_Rbtree_Cmp_Key_Cb)Function)

/**
 * @typedef Eina_Rbtree_Free_Cb
 * Function used free a node.
 */
typedef void (*Eina_Rbtree_Free_Cb)(Eina_Rbtree *node, void *data);
/**
 * @def EINA_RBTREE_FREE_CB
 * Cast using #Eina_Rbtree_Free_Cb
 */
#define EINA_RBTREE_FREE_CB(Function) ((Eina_Rbtree_Free_Cb)Function)


/**
 * @brief Insert a new node inside an existing red black tree.
 *
 * @param root The root of an exisiting valid red black tree.
 * @param node The new node to insert.
 * @param cmp The callback that is able to compare two nodes.
 * @param data Private data to help the compare function.
 * @return The new root of the red black tree.
 *
 * This function insert a new node in a valid red black tree. @c NULL is
 * an empty valid red black tree. The resulting new tree is a valid red
 * black tree. This function doesn't allocate any data.
 */
EAPI Eina_Rbtree          *eina_rbtree_inline_insert(Eina_Rbtree *root, Eina_Rbtree *node, Eina_Rbtree_Cmp_Node_Cb cmp, const void *data) EINA_ARG_NONNULL(2, 3) EINA_WARN_UNUSED_RESULT;

/**
 * @brief Remove a node from an existing red black tree.
 *
 * @param root The root of a valid red black tree.
 * @param node The node to remove from the tree.
 * @param cmp The callback that is able to compare two nodes.
 * @param data Private data to help the compare function.
 * @return The new root of the red black tree.
 *
 * This function remove a new node in a valid red black tree that should
 * contain the node that you are removing. This function will return @c NULL
 * when the red black tree got empty. This function doesn't free any data.
 */
EAPI Eina_Rbtree          *eina_rbtree_inline_remove(Eina_Rbtree *root, Eina_Rbtree *node, Eina_Rbtree_Cmp_Node_Cb cmp, const void *data) EINA_ARG_NONNULL(2, 3) EINA_WARN_UNUSED_RESULT;

/**
 * @brief Delete all nodes from a valid red black tree.
 *
 * @param root The root of a valid red black tree.
 * @param func The callback that will free each node.
 * @param data Private data to help the compare function.
 *
 */
EAPI void                  eina_rbtree_delete(Eina_Rbtree *root, Eina_Rbtree_Free_Cb func, void *data) EINA_ARG_NONNULL(2);

static inline Eina_Rbtree *eina_rbtree_inline_lookup(const Eina_Rbtree *root, const void *key, int length, Eina_Rbtree_Cmp_Key_Cb cmp, const void *data) EINA_PURE EINA_ARG_NONNULL(2, 4) EINA_WARN_UNUSED_RESULT;


/**
 * @brief Returned a new prefix iterator associated to a rbtree.
 *
 * @param root The root of rbtree.
 * @return A new iterator.
 *
 * This function returns a newly allocated iterator associated to @p
 * root. It will iterate the tree using prefix walk. If @p root is @c
 * NULL, this function still returns a valid iterator that will always
 * return false on eina_iterator_next(), thus keeping API sane.
 *
 * If the memory can not be allocated, @c NULL is returned.
 * Otherwise, a valid iterator is returned.
 *
 * @warning if the rbtree structure changes then the iterator becomes
 *    invalid! That is, if you add or remove nodes this iterator
 *    behavior is undefined and your program may crash!
 */
EAPI Eina_Iterator        *eina_rbtree_iterator_prefix(const Eina_Rbtree *root) EINA_MALLOC EINA_WARN_UNUSED_RESULT;

/**
 * @brief Returned a new prefix iterator associated to a rbtree.
 *
 * @param root The root of rbtree.
 * @return A new iterator.
 *
 * This function returns a newly allocated iterator associated to @p
 * root. It will iterate the tree using infix walk. If @p root is @c
 * NULL, this function still returns a valid iterator that will always
 * return false on eina_iterator_next(), thus keeping API sane.
 *
 * If the memory can not be allocated, @c NULL is returned.
 * Otherwise, a valid iterator is returned.
 *
 * @warning if the rbtree structure changes then the iterator becomes
 *    invalid! That is, if you add or remove nodes this iterator
 *    behavior is undefined and your program may crash!
 */
EAPI Eina_Iterator        *eina_rbtree_iterator_infix(const Eina_Rbtree *root) EINA_MALLOC EINA_WARN_UNUSED_RESULT;

/**
 * @brief Returned a new prefix iterator associated to a rbtree.
 *
 * @param root The root of rbtree.
 * @return A new iterator.
 *
 * This function returns a newly allocated iterator associated to @p
 * root. It will iterate the tree using postfix walk. If @p root is @c
 * NULL, this function still returns a valid iterator that will always
 * return false on eina_iterator_next(), thus keeping API sane.
 *
 * If the memory can not be allocated, @c NULL is returned.
 * Otherwise, a valid iterator is returned.
 *
 * @warning if the rbtree structure changes then the iterator becomes
 *    invalid! That is, if you add or remove nodes this iterator
 *    behavior is undefined and your program may crash!
 */
EAPI Eina_Iterator        *eina_rbtree_iterator_postfix(const Eina_Rbtree *root) EINA_MALLOC EINA_WARN_UNUSED_RESULT;

#include "eina_inline_rbtree.x"

/**
 * @}
 */

/**
 * @}
 */

/**
 * @}
 */

#endif