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1 /*
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2 * Copyright 2000-2008 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 // correct linkage required to compile w/o warnings
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26 // (must be on file level - cannot be local)
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27 extern "C" { typedef int (*ftype)(const void*, const void*); }
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28
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29
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30 class ResourceArray: public ResourceObj {
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31 protected:
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32 int _length; // the number of array elements
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33 void* _data; // the array memory
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34 #ifdef ASSERT
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35 int _nesting; // the resource area nesting level
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36 #endif
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37
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38 // creation
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39 ResourceArray() {
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40 _length = 0;
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41 _data = NULL;
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42 DEBUG_ONLY(init_nesting();)
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432
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43 // client may call initialize, at most once
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44 }
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45
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46
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47 ResourceArray(size_t esize, int length) {
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432
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48 DEBUG_ONLY(_data = NULL);
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49 initialize(esize, length);
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50 }
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51
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52 void initialize(size_t esize, int length) {
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53 assert(length >= 0, "illegal length");
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54 assert(_data == NULL, "must be new object");
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55 _length = length;
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56 _data = resource_allocate_bytes(esize * length);
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57 DEBUG_ONLY(init_nesting();)
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58 }
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59
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60 #ifdef ASSERT
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61 void init_nesting();
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62 #endif
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63
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64 // helper functions
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65 void sort (size_t esize, ftype f); // sort the array
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66 void expand (size_t esize, int i, int& size);// expand the array to include slot i
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67 void remove_at(size_t esize, int i); // remove the element in slot i
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68
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69 public:
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70 // standard operations
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71 int length() const { return _length; }
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72 bool is_empty() const { return length() == 0; }
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73 };
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74
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75
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76 class CHeapArray: public CHeapObj {
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77 protected:
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78 int _length; // the number of array elements
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79 void* _data; // the array memory
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80
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81 // creation
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82 CHeapArray() {
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83 _length = 0;
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84 _data = NULL;
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85 }
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86
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87
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88 CHeapArray(size_t esize, int length) {
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89 assert(length >= 0, "illegal length");
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90 _length = length;
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91 _data = (void*) NEW_C_HEAP_ARRAY(char *, esize * length);
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92 }
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93
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94 #ifdef ASSERT
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95 void init_nesting();
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96 #endif
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97
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98 // helper functions
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99 void sort (size_t esize, ftype f); // sort the array
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100 void expand (size_t esize, int i, int& size);// expand the array to include slot i
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101 void remove_at(size_t esize, int i); // remove the element in slot i
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102
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103 public:
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104 // standard operations
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105 int length() const { return _length; }
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106 bool is_empty() const { return length() == 0; }
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107 };
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108
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109 #define define_generic_array(array_name,element_type, base_class) \
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110 class array_name: public base_class { \
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111 protected: \
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112 typedef element_type etype; \
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113 enum { esize = sizeof(etype) }; \
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114 \
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115 void base_remove_at(size_t size, int i) { base_class::remove_at(size, i); } \
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116 \
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117 public: \
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118 /* creation */ \
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119 array_name() : base_class() {} \
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120 array_name(const int length) : base_class(esize, length) {} \
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121 array_name(const int length, const etype fx) { initialize(length, fx); } \
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122 void initialize(const int length) { base_class::initialize(esize, length); } \
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123 void initialize(const int length, const etype fx) { \
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124 initialize(length); \
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125 for (int i = 0; i < length; i++) ((etype*)_data)[i] = fx; \
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126 } \
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127 \
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128 /* standard operations */ \
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129 etype& operator [] (const int i) const { \
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130 assert(0 <= i && i < length(), "index out of bounds"); \
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131 return ((etype*)_data)[i]; \
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132 } \
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133 \
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134 int index_of(const etype x) const { \
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135 int i = length(); \
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136 while (i-- > 0 && ((etype*)_data)[i] != x) ; \
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137 /* i < 0 || ((etype*)_data)_data[i] == x */ \
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138 return i; \
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139 } \
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140 \
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141 void sort(int f(etype*, etype*)) { base_class::sort(esize, (ftype)f); } \
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142 bool contains(const etype x) const { return index_of(x) >= 0; } \
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143 \
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144 /* deprecated operations - for compatibility with GrowableArray only */ \
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145 etype at(const int i) const { return (*this)[i]; } \
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146 void at_put(const int i, const etype x) { (*this)[i] = x; } \
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147 etype* adr_at(const int i) { return &(*this)[i]; } \
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148 int find(const etype x) { return index_of(x); } \
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149 }; \
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150
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151
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152 #define define_array(array_name,element_type) \
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153 define_generic_array(array_name, element_type, ResourceArray)
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154
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155
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156 #define define_stack(stack_name,array_name) \
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157 class stack_name: public array_name { \
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158 protected: \
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159 int _size; \
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160 \
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161 void grow(const int i, const etype fx) { \
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162 assert(i >= length(), "index too small"); \
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163 if (i >= size()) expand(esize, i, _size); \
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164 for (int j = length(); j <= i; j++) ((etype*)_data)[j] = fx; \
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165 _length = i+1; \
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166 } \
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167 \
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168 public: \
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169 /* creation */ \
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170 stack_name() : array_name() { _size = 0; } \
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171 stack_name(const int size) { initialize(size); } \
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172 stack_name(const int size, const etype fx) { initialize(size, fx); } \
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173 void initialize(const int size, const etype fx) { \
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174 _size = size; \
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175 array_name::initialize(size, fx); \
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176 /* _length == size, allocation and size are the same */ \
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177 } \
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178 void initialize(const int size) { \
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179 _size = size; \
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180 array_name::initialize(size); \
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181 _length = 0; /* reset length to zero; _size records the allocation */ \
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182 } \
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183 \
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184 /* standard operations */ \
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185 int size() const { return _size; } \
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186 \
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187 int push(const etype x) { \
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188 int len = length(); \
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189 if (len >= size()) expand(esize, len, _size); \
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190 ((etype*)_data)[len] = x; \
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191 _length = len+1; \
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192 return len; \
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193 } \
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194 \
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195 etype pop() { \
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196 assert(!is_empty(), "stack is empty"); \
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197 return ((etype*)_data)[--_length]; \
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198 } \
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199 \
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200 etype top() const { \
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201 assert(!is_empty(), "stack is empty"); \
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202 return ((etype*)_data)[length() - 1]; \
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203 } \
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204 \
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205 void push_all(const stack_name* stack) { \
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206 const int l = stack->length(); \
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207 for (int i = 0; i < l; i++) push(((etype*)(stack->_data))[i]); \
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208 } \
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209 \
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210 etype at_grow(const int i, const etype fx) { \
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211 if (i >= length()) grow(i, fx); \
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212 return ((etype*)_data)[i]; \
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213 } \
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214 \
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215 void at_put_grow(const int i, const etype x, const etype fx) { \
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216 if (i >= length()) grow(i, fx); \
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217 ((etype*)_data)[i] = x; \
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218 } \
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219 \
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220 void truncate(const int length) { \
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221 assert(0 <= length && length <= this->length(), "illegal length"); \
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222 _length = length; \
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223 } \
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224 \
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225 void remove_at(int i) { base_remove_at(esize, i); } \
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226 void remove(etype x) { remove_at(index_of(x)); } \
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227 \
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228 /* inserts the given element before the element at index i */ \
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229 void insert_before(const int i, const etype el) { \
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230 int len = length(); \
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231 int new_length = len + 1; \
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232 if (new_length >= size()) expand(esize, new_length, _size); \
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233 for (int j = len - 1; j >= i; j--) { \
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234 ((etype*)_data)[j + 1] = ((etype*)_data)[j]; \
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235 } \
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236 _length = new_length; \
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237 at_put(i, el); \
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238 } \
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239 \
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240 /* inserts contents of the given stack before the element at index i */ \
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241 void insert_before(const int i, const stack_name *st) { \
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242 if (st->length() == 0) return; \
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243 int len = length(); \
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244 int st_len = st->length(); \
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245 int new_length = len + st_len; \
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246 if (new_length >= size()) expand(esize, new_length, _size); \
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247 int j; \
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248 for (j = len - 1; j >= i; j--) { \
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249 ((etype*)_data)[j + st_len] = ((etype*)_data)[j]; \
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250 } \
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251 for (j = 0; j < st_len; j++) { \
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252 ((etype*)_data)[i + j] = ((etype*)st->_data)[j]; \
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253 } \
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254 _length = new_length; \
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255 } \
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256 \
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257 /* deprecated operations - for compatibility with GrowableArray only */ \
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258 int capacity() const { return size(); } \
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259 void clear() { truncate(0); } \
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260 void trunc_to(const int length) { truncate(length); } \
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261 int append(const etype x) { return push(x); } \
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262 void appendAll(const stack_name* stack) { push_all(stack); } \
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263 etype last() const { return top(); } \
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264 }; \
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265
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266
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267 #define define_resource_list(element_type) \
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268 define_generic_array(element_type##Array, element_type, ResourceArray) \
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269 define_stack(element_type##List, element_type##Array)
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270
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271 #define define_resource_pointer_list(element_type) \
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272 define_generic_array(element_type##Array, element_type *, ResourceArray) \
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273 define_stack(element_type##List, element_type##Array)
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274
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275 #define define_c_heap_list(element_type) \
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276 define_generic_array(element_type##Array, element_type, CHeapArray) \
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277 define_stack(element_type##List, element_type##Array)
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278
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279 #define define_c_heap_pointer_list(element_type) \
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280 define_generic_array(element_type##Array, element_type *, CHeapArray) \
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281 define_stack(element_type##List, element_type##Array)
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282
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283
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284 // Arrays for basic types
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285
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286 define_array(boolArray, bool) define_stack(boolStack, boolArray)
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287 define_array(intArray , int ) define_stack(intStack , intArray )
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