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1 /* |
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2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Type-safe unique id template |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 |
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21 #include "glxpanic.h" |
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22 |
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23 const TUint KGlxInvalidIdValue = KMaxTUint; |
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24 |
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25 // ----------------------------------------------------------------------------- |
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26 // Default constructor |
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27 // ----------------------------------------------------------------------------- |
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28 // |
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29 template <class T> |
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30 inline TGlxId<T>::TGlxId() |
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31 { |
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32 iIdValue = KGlxInvalidIdValue; |
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33 } |
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34 |
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35 // ----------------------------------------------------------------------------- |
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36 // Constructor |
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37 // ----------------------------------------------------------------------------- |
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38 // |
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39 template <class T> |
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40 inline TGlxId<T>::TGlxId(const TGlxId<T>& aId) |
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41 { |
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42 iIdValue = aId.iIdValue; |
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43 } |
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44 |
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45 // ----------------------------------------------------------------------------- |
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46 // Constructor |
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47 // ----------------------------------------------------------------------------- |
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48 // |
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49 template <class T> |
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50 inline TGlxId<T>::TGlxId(TUint aIdValue) |
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51 { |
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52 __ASSERT_DEBUG(aIdValue != KGlxInvalidIdValue, Panic(EGlxPanicIllegalArgument)); |
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53 iIdValue = aIdValue; |
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54 } |
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55 |
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56 // ----------------------------------------------------------------------------- |
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57 // Constructor |
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58 // ----------------------------------------------------------------------------- |
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59 // |
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60 template <class T> |
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61 inline TGlxId<T>::TGlxId(const TGlxIdNone&) |
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62 { |
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63 iIdValue = KGlxInvalidIdValue; |
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64 } |
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65 |
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66 // ----------------------------------------------------------------------------- |
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67 // Assignment, checks for invalid value |
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68 // ----------------------------------------------------------------------------- |
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69 // |
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70 template <class T> |
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71 inline TGlxId<T>& TGlxId<T>::operator=(const TGlxId<T>& aId) |
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72 { |
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73 __ASSERT_DEBUG(aId.iIdValue != KGlxInvalidIdValue, Panic(EGlxPanicIllegalArgument)); // Use SetValue to set undefined value |
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74 iIdValue = aId.iIdValue; |
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75 return *this; |
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76 } |
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77 |
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78 // ----------------------------------------------------------------------------- |
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79 // Assignment, checks for invalid value |
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80 // ----------------------------------------------------------------------------- |
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81 // |
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82 template <class T> |
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83 inline TGlxId<T>& TGlxId<T>::operator=(TUint aIdValue) |
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84 { |
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85 __ASSERT_DEBUG(aIdValue != KGlxInvalidIdValue, Panic(EGlxPanicIllegalArgument)); |
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86 iIdValue = aIdValue; |
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87 return *this; |
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88 } |
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89 |
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90 // ----------------------------------------------------------------------------- |
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91 // Assignment |
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92 // ----------------------------------------------------------------------------- |
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93 // |
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94 template <class T> |
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95 inline TGlxId<T>& TGlxId<T>::operator=(const TGlxIdNone&) |
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96 { |
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97 iIdValue = KGlxInvalidIdValue; |
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98 return *this; |
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99 } |
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100 |
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101 // ----------------------------------------------------------------------------- |
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102 // Post-increment |
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103 // ----------------------------------------------------------------------------- |
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104 // |
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105 template <class T> |
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106 inline TGlxId<T> TGlxId<T>::operator++(int) |
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107 { |
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108 TUint value = iIdValue; |
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109 iIdValue++; |
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110 return TGlxId<T>(value); |
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111 } |
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112 |
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113 // ----------------------------------------------------------------------------- |
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114 // Comparison |
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115 // ----------------------------------------------------------------------------- |
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116 // |
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117 template <class T> |
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118 inline TBool TGlxId<T>::operator!=(const TGlxId<T>& aId) const |
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119 { |
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120 return iIdValue != aId.iIdValue; |
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121 } |
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122 |
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123 // ----------------------------------------------------------------------------- |
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124 // Comparison |
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125 // ----------------------------------------------------------------------------- |
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126 // |
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127 template <class T> |
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128 inline TBool TGlxId<T>::operator==(const TGlxId<T>& aId) const |
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129 { |
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130 return iIdValue == aId.iIdValue; |
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131 } |
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132 |
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133 // ----------------------------------------------------------------------------- |
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134 // Comparison |
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135 // ----------------------------------------------------------------------------- |
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136 // |
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137 template <class T> |
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138 inline TBool TGlxId<T>::operator!=(const TGlxIdNone&) const |
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139 { |
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140 return iIdValue != KGlxInvalidIdValue; |
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141 } |
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142 |
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143 // ----------------------------------------------------------------------------- |
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144 // Comparison |
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145 // ----------------------------------------------------------------------------- |
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146 // |
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147 template <class T> |
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148 inline TBool TGlxId<T>::operator==(const TGlxIdNone&) const |
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149 { |
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150 return iIdValue == KGlxInvalidIdValue; |
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151 } |
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152 |
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153 // ----------------------------------------------------------------------------- |
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154 // Comparison |
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155 // ----------------------------------------------------------------------------- |
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156 // |
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157 template <class T> |
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158 inline TBool TGlxId<T>::operator>(const TGlxId<T>& aId) const |
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159 { |
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160 return iIdValue > aId.iIdValue; |
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161 } |
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162 |
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163 // ----------------------------------------------------------------------------- |
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164 // Comparison |
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165 // ----------------------------------------------------------------------------- |
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166 // |
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167 template <class T> |
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168 inline TBool TGlxId<T>::operator<(const TGlxId<T>& aId) const |
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169 { |
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170 return iIdValue < aId.iIdValue; |
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171 } |
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172 |
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173 // ----------------------------------------------------------------------------- |
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174 // Returns current value |
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175 // ----------------------------------------------------------------------------- |
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176 // |
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177 template <class T> |
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178 inline TUint TGlxId<T>::Value() const |
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179 { |
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180 return iIdValue; |
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181 } |
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182 |
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183 // ----------------------------------------------------------------------------- |
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184 // Allows setting undefined as value |
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185 // ----------------------------------------------------------------------------- |
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186 // |
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187 template <class T> |
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188 inline void TGlxId<T>::SetValue(TUint aIdValue) |
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189 { |
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190 iIdValue = aIdValue; |
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191 } |
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192 |
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193 /** |
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194 * TGlxDefaultIdProvider |
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195 * Simple implementation of id provider |
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196 */ |
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197 // ----------------------------------------------------------------------------- |
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198 // Allows setting undefined as value |
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199 // ----------------------------------------------------------------------------- |
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200 // |
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201 template <class T> |
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202 TGlxDefaultIdProvider<T>::TGlxDefaultIdProvider() |
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203 { |
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204 iNextIdValue = 0; |
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205 } |
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206 |
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207 // ----------------------------------------------------------------------------- |
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208 // Allows setting undefined as value |
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209 // ----------------------------------------------------------------------------- |
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210 // |
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211 template <class T> |
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212 void TGlxDefaultIdProvider<T>::NextId(T& aId) |
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213 { |
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214 aId = iNextIdValue++; |
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215 } |
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216 |