annotate array.h @ 127:a0a86380456e

fix for #if handling: Don't eval the control expression of the first #if of a block when already in a false block; it might not be valid. Reported by Baptiste Daroussin.
author David A. Holland
date Wed, 12 Jun 2013 10:52:56 -0400
parents 0921c47b4f22
children c440247cbd69
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1 /*-
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2 * Copyright (c) 2009 The NetBSD Foundation, Inc.
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3 * All rights reserved.
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4 *
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5 * This code is derived from software contributed to The NetBSD Foundation
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6 * by David A. Holland.
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7 *
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8 * Redistribution and use in source and binary forms, with or without
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9 * modification, are permitted provided that the following conditions
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10 * are met:
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11 * 1. Redistributions of source code must retain the above copyright
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12 * notice, this list of conditions and the following disclaimer.
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13 * 2. Redistributions in binary form must reproduce the above copyright
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14 * notice, this list of conditions and the following disclaimer in the
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15 * documentation and/or other materials provided with the distribution.
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16 *
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17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 * POSSIBILITY OF SUCH DAMAGE.
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28 */
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29
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30 #ifndef ARRAY_H
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31 #define ARRAY_H
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32
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33 #include "inlinedefs.h" // XXX
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34 #include "utils.h"
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35
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36 #define ARRAYS_CHECKED
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37
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38 #ifdef ARRAYS_CHECKED
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39 #include <assert.h>
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40 #define arrayassert assert
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41 #else
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42 #define arrayassert(x) ((void)(x))
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43 #endif
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44
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45 #ifndef ARRAYINLINE
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46 #define ARRAYINLINE C99INLINE
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47 #endif
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48
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49 ////////////////////////////////////////////////////////////
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50 // type and base operations
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51
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52 struct array {
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53 void **v;
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54 unsigned num, max;
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55 };
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56
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57 struct array *array_create(void);
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58 void array_destroy(struct array *);
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59 void array_init(struct array *);
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60 void array_cleanup(struct array *);
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61 ARRAYINLINE unsigned array_num(const struct array *);
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62 ARRAYINLINE void *array_get(const struct array *, unsigned index_);
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63 ARRAYINLINE void array_set(const struct array *, unsigned index_, void *val);
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64 void array_setsize(struct array *, unsigned num);
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65 ARRAYINLINE void array_add(struct array *, void *val, unsigned *index_ret);
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66 void array_insert(struct array *a, unsigned index_);
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67 void array_remove(struct array *a, unsigned index_);
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68
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69 ////////////////////////////////////////////////////////////
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70 // inlining for base operations
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71
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72 ARRAYINLINE unsigned
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73 array_num(const struct array *a)
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74 {
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75 return a->num;
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76 }
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77
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78 ARRAYINLINE void *
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79 array_get(const struct array *a, unsigned index_)
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80 {
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81 arrayassert(index_ < a->num);
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82 return a->v[index_];
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83 }
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84
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85 ARRAYINLINE void
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86 array_set(const struct array *a, unsigned index_, void *val)
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87 {
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88 arrayassert(index_ < a->num);
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89 a->v[index_] = val;
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90 }
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91
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92 ARRAYINLINE void
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93 array_add(struct array *a, void *val, unsigned *index_ret)
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94 {
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95 unsigned index_ = a->num;
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96 array_setsize(a, index_+1);
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97 a->v[index_] = val;
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98 if (index_ret != NULL) {
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99 *index_ret = index_;
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100 }
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101 }
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102
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103 ////////////////////////////////////////////////////////////
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104 // bits for declaring and defining typed arrays
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105
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106 /*
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107 * Usage:
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108 *
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109 * DECLARRAY_BYTYPE(foo, bar, INLINE) declares "struct foo", which is
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110 * an array of pointers to "bar", plus the operations on it.
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111 *
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112 * DECLARRAY(foo, INLINE) is equivalent to
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113 * DECLARRAY_BYTYPE(fooarray, struct foo, INLINE).
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114 *
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115 * DEFARRAY_BYTYPE and DEFARRAY are the same as DECLARRAY except that
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116 * they define the operations.
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117 *
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118 * The argument INLINE can be used as follows:
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119 *
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120 * 1. For no inlining:
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121 * In foo.h:
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122 * DECLARRAY(foo, );
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123 * In foo.c:
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124 * DEFARRAY(foo, );
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125 *
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126 * 2. To be file-static:
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127 * In foo.c:
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128 * DECLARRAY(foo, static);
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129 * DEFARRAY(foo, static);
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130 *
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131 * 3. To inline using C99:
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132 * In foo.h:
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133 * DECLARRAY(foo, inline);
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134 * DEFARRAY(foo, inline);
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135 *
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136 * 4. To inline with old gcc:
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137 * In foo.h:
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138 * #ifndef FOO_INLINE
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139 * #define FOO_INLINE extern inline
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140 * #endif
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141 * DECLARRAY(foo, );
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142 * DEFARRAY(foo, FOO_INLINE);
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143 * In foo.c:
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144 * #define FOO_INLINE
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145 * #include "foo.h"
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146 *
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147 * 5. To inline such that it works both with old gcc and C99:
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148 * In foo.h:
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149 * #ifndef FOO_INLINE
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150 * #define FOO_INLINE extern inline
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151 * #endif
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152 * DECLARRAY(foo, FOO_INLINE);
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153 * DEFARRAY(foo, FOO_INLINE);
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154 * In foo.c:
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155 * #define FOO_INLINE
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156 * #include "foo.h"
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157 *
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158 * The mechanism in case (4) ensures that an externally linkable
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159 * definition exists.
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160 */
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161
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162 #define DECLARRAY_BYTYPE(ARRAY, T, INLINE) \
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163 struct ARRAY { \
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164 struct array arr; \
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165 }; \
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166 \
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167 INLINE struct ARRAY *ARRAY##_create(void); \
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168 INLINE void ARRAY##_destroy(struct ARRAY *a); \
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169 INLINE void ARRAY##_init(struct ARRAY *a); \
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170 INLINE void ARRAY##_cleanup(struct ARRAY *a); \
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171 INLINE unsigned ARRAY##_num(const struct ARRAY *a); \
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172 INLINE T *ARRAY##_get(const struct ARRAY *a, unsigned index_); \
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173 INLINE void ARRAY##_set(struct ARRAY *a, unsigned index_, T *val); \
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174 INLINE void ARRAY##_setsize(struct ARRAY *a, unsigned num); \
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175 INLINE void ARRAY##_add(struct ARRAY *a, T *val, unsigned *index_ret);\
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176 INLINE void ARRAY##_insert(struct ARRAY *a, unsigned index_); \
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177 INLINE void ARRAY##_remove(struct ARRAY *a, unsigned index_)
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179
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180 #define DEFARRAY_BYTYPE(ARRAY, T, INLINE) \
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181 INLINE void \
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182 ARRAY##_init(struct ARRAY *a) \
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183 { \
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184 array_init(&a->arr); \
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185 } \
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186 \
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187 INLINE void \
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188 ARRAY##_cleanup(struct ARRAY *a) \
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189 { \
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190 array_cleanup(&a->arr); \
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191 } \
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192 \
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193 INLINE struct \
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194 ARRAY *ARRAY##_create(void) \
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195 { \
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196 struct ARRAY *a; \
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197 \
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198 a = domalloc(sizeof(*a)); \
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199 ARRAY##_init(a); \
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200 return a; \
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201 } \
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202 \
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203 INLINE void \
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204 ARRAY##_destroy(struct ARRAY *a) \
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205 { \
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206 ARRAY##_cleanup(a); \
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207 dofree(a, sizeof(*a)); \
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208 } \
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209 \
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210 INLINE unsigned \
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211 ARRAY##_num(const struct ARRAY *a) \
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212 { \
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213 return array_num(&a->arr); \
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214 } \
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215 \
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216 INLINE T * \
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217 ARRAY##_get(const struct ARRAY *a, unsigned index_) \
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218 { \
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219 return (T *)array_get(&a->arr, index_); \
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220 } \
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221 \
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222 INLINE void \
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223 ARRAY##_set(struct ARRAY *a, unsigned index_, T *val) \
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224 { \
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225 array_set(&a->arr, index_, (void *)val); \
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226 } \
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227 \
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228 INLINE void \
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229 ARRAY##_setsize(struct ARRAY *a, unsigned num) \
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230 { \
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231 array_setsize(&a->arr, num); \
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232 } \
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233 \
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234 INLINE void \
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235 ARRAY##_add(struct ARRAY *a, T *val, unsigned *ret) \
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236 { \
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237 array_add(&a->arr, (void *)val, ret); \
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238 } \
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239 \
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240 INLINE void \
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241 ARRAY##_insert(struct ARRAY *a, unsigned index_) \
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242 { \
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243 array_insert(&a->arr, index_); \
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244 } \
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245 \
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246 INLINE void \
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247 ARRAY##_remove(struct ARRAY *a, unsigned index_) \
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248 { \
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249 array_remove(&a->arr, index_); \
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250 }
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251
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252 #define DECLARRAY(T, INLINE) DECLARRAY_BYTYPE(T##array, struct T, INLINE)
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253 #define DEFARRAY(T, INLINE) DEFARRAY_BYTYPE(T##array, struct T, INLINE)
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254
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255 #define DESTROYALL_ARRAY(T, INLINE) \
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256 void T##array_destroyall(struct T##array *arr); \
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257 \
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258 INLINE void \
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259 T##array_destroyall(struct T##array *arr) \
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260 { \
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261 unsigned i, num; \
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262 struct T *t; \
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263 \
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264 num = T##array_num(arr); \
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265 for (i=0; i<num; i++) { \
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266 t = T##array_get(arr, i); \
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267 T##_destroy(t); \
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268 } \
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269 T##array_setsize(arr, 0); \
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270 }
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271
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272
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273 ////////////////////////////////////////////////////////////
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274 // basic array types
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275
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276 DECLARRAY_BYTYPE(stringarray, char, ARRAYINLINE);
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277 DEFARRAY_BYTYPE(stringarray, char, ARRAYINLINE);
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278
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279 #endif /* ARRAY_H */