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4349 | Serge | 1 | /* cairo - a vector graphics library with display and print output |
2 | * |
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3 | * Copyright © 2009 Chris Wilson |
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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 either under the terms of the GNU Lesser General Public |
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7 | * License version 2.1 as published by the Free Software Foundation |
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8 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
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9 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
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10 | * notice, a recipient may use your version of this file under either |
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11 | * the MPL or the LGPL. |
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12 | * |
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13 | * You should have received a copy of the LGPL along with this library |
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14 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
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15 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
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16 | * You should have received a copy of the MPL along with this library |
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17 | * in the file COPYING-MPL-1.1 |
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18 | * |
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19 | * The contents of this file are subject to the Mozilla Public License |
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20 | * Version 1.1 (the "License"); you may not use this file except in |
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21 | * compliance with the License. You may obtain a copy of the License at |
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22 | * http://www.mozilla.org/MPL/ |
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23 | * |
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24 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
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25 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
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26 | * the specific language governing rights and limitations. |
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27 | * |
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28 | * The Original Code is the cairo graphics library. |
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29 | * |
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30 | * The Initial Developer of the Original Code is Chris Wilson. |
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31 | * |
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32 | * Contributor(s): |
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33 | * Chris Wilson |
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34 | * |
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35 | */ |
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36 | |||
37 | #ifndef CAIRO_LIST_INLINE_H |
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38 | #define CAIRO_LIST_INLINE_H |
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39 | |||
40 | #include "cairo-list-private.h" |
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41 | |||
42 | #define cairo_list_entry(ptr, type, member) \ |
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43 | cairo_container_of(ptr, type, member) |
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44 | |||
45 | #define cairo_list_first_entry(ptr, type, member) \ |
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46 | cairo_list_entry((ptr)->next, type, member) |
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47 | |||
48 | #define cairo_list_last_entry(ptr, type, member) \ |
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49 | cairo_list_entry((ptr)->prev, type, member) |
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50 | |||
51 | #define cairo_list_foreach(pos, head) \ |
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52 | for (pos = (head)->next; pos != (head); pos = pos->next) |
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53 | |||
54 | #define cairo_list_foreach_entry(pos, type, head, member) \ |
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55 | for (pos = cairo_list_entry((head)->next, type, member);\ |
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56 | &pos->member != (head); \ |
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57 | pos = cairo_list_entry(pos->member.next, type, member)) |
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58 | |||
59 | #define cairo_list_foreach_entry_safe(pos, n, type, head, member) \ |
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60 | for (pos = cairo_list_entry ((head)->next, type, member),\ |
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61 | n = cairo_list_entry (pos->member.next, type, member);\ |
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62 | &pos->member != (head); \ |
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63 | pos = n, n = cairo_list_entry (n->member.next, type, member)) |
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64 | |||
65 | #define cairo_list_foreach_entry_reverse(pos, type, head, member) \ |
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66 | for (pos = cairo_list_entry((head)->prev, type, member);\ |
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67 | &pos->member != (head); \ |
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68 | pos = cairo_list_entry(pos->member.prev, type, member)) |
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69 | |||
70 | #define cairo_list_foreach_entry_reverse_safe(pos, n, type, head, member) \ |
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71 | for (pos = cairo_list_entry((head)->prev, type, member),\ |
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72 | n = cairo_list_entry (pos->member.prev, type, member);\ |
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73 | &pos->member != (head); \ |
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74 | pos = n, n = cairo_list_entry (n->member.prev, type, member)) |
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75 | |||
76 | #ifdef CAIRO_LIST_DEBUG |
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77 | static inline void |
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78 | _cairo_list_validate (const cairo_list_t *link) |
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79 | { |
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80 | assert (link->next->prev == link); |
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81 | assert (link->prev->next == link); |
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82 | } |
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83 | static inline void |
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84 | cairo_list_validate (const cairo_list_t *head) |
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85 | { |
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86 | cairo_list_t *link; |
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87 | |||
88 | cairo_list_foreach (link, head) |
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89 | _cairo_list_validate (link); |
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90 | } |
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91 | static inline cairo_bool_t |
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92 | cairo_list_is_empty (const cairo_list_t *head); |
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93 | static inline void |
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94 | cairo_list_validate_is_empty (const cairo_list_t *head) |
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95 | { |
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96 | assert (head->next == NULL || (cairo_list_is_empty (head) && head->next == head->prev)); |
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97 | } |
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98 | #else |
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99 | #define _cairo_list_validate(link) |
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100 | #define cairo_list_validate(head) |
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101 | #define cairo_list_validate_is_empty(head) |
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102 | #endif |
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103 | |||
104 | static inline void |
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105 | cairo_list_init (cairo_list_t *entry) |
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106 | { |
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107 | entry->next = entry; |
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108 | entry->prev = entry; |
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109 | } |
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110 | |||
111 | static inline void |
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112 | __cairo_list_add (cairo_list_t *entry, |
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113 | cairo_list_t *prev, |
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114 | cairo_list_t *next) |
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115 | { |
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116 | next->prev = entry; |
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117 | entry->next = next; |
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118 | entry->prev = prev; |
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119 | prev->next = entry; |
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120 | } |
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121 | |||
122 | static inline void |
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123 | cairo_list_add (cairo_list_t *entry, cairo_list_t *head) |
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124 | { |
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125 | cairo_list_validate (head); |
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126 | cairo_list_validate_is_empty (entry); |
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127 | __cairo_list_add (entry, head, head->next); |
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128 | cairo_list_validate (head); |
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129 | } |
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130 | |||
131 | static inline void |
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132 | cairo_list_add_tail (cairo_list_t *entry, cairo_list_t *head) |
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133 | { |
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134 | cairo_list_validate (head); |
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135 | cairo_list_validate_is_empty (entry); |
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136 | __cairo_list_add (entry, head->prev, head); |
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137 | cairo_list_validate (head); |
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138 | } |
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139 | |||
140 | static inline void |
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141 | __cairo_list_del (cairo_list_t *prev, cairo_list_t *next) |
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142 | { |
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143 | next->prev = prev; |
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144 | prev->next = next; |
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145 | } |
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146 | |||
147 | static inline void |
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148 | _cairo_list_del (cairo_list_t *entry) |
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149 | { |
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150 | __cairo_list_del (entry->prev, entry->next); |
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151 | } |
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152 | |||
153 | static inline void |
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154 | cairo_list_del (cairo_list_t *entry) |
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155 | { |
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156 | _cairo_list_del (entry); |
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157 | cairo_list_init (entry); |
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158 | } |
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159 | |||
160 | static inline void |
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161 | cairo_list_move (cairo_list_t *entry, cairo_list_t *head) |
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162 | { |
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163 | cairo_list_validate (head); |
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164 | __cairo_list_del (entry->prev, entry->next); |
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165 | __cairo_list_add (entry, head, head->next); |
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166 | cairo_list_validate (head); |
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167 | } |
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168 | |||
169 | static inline void |
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170 | cairo_list_move_tail (cairo_list_t *entry, cairo_list_t *head) |
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171 | { |
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172 | cairo_list_validate (head); |
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173 | __cairo_list_del (entry->prev, entry->next); |
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174 | __cairo_list_add (entry, head->prev, head); |
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175 | cairo_list_validate (head); |
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176 | } |
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177 | |||
178 | static inline void |
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179 | cairo_list_swap (cairo_list_t *entry, cairo_list_t *other) |
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180 | { |
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181 | __cairo_list_add (entry, other->prev, other->next); |
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182 | cairo_list_init (other); |
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183 | } |
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184 | |||
185 | static inline cairo_bool_t |
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186 | cairo_list_is_first (const cairo_list_t *entry, |
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187 | const cairo_list_t *head) |
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188 | { |
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189 | cairo_list_validate (head); |
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190 | return entry->prev == head; |
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191 | } |
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192 | |||
193 | static inline cairo_bool_t |
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194 | cairo_list_is_last (const cairo_list_t *entry, |
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195 | const cairo_list_t *head) |
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196 | { |
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197 | cairo_list_validate (head); |
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198 | return entry->next == head; |
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199 | } |
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200 | |||
201 | static inline cairo_bool_t |
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202 | cairo_list_is_empty (const cairo_list_t *head) |
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203 | { |
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204 | cairo_list_validate (head); |
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205 | return head->next == head; |
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206 | } |
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207 | |||
208 | static inline cairo_bool_t |
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209 | cairo_list_is_singular (const cairo_list_t *head) |
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210 | { |
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211 | cairo_list_validate (head); |
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212 | return head->next == head || head->next == head->prev; |
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213 | } |
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214 | |||
215 | #endif /* CAIRO_LIST_INLINE_H */ |