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An attempt (failed due to optlink) to improve locality of declarations exported from QtD executables Q_CLASSINFO implementation Now Qtd can be built on Windows
author Max Samukha <maxter@spambox.com>
date Wed, 02 Jun 2010 19:38:05 +0300
parents 31520b2c0b3c
children a084e2df3776
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1 module qt.core.QMetaObject;
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2
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3 import
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4 qt.QGlobal,
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5 qt.core.QObject,
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6 qtd.QtdObject,
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7 std.algorithm,
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8 qtd.meta.Runtime,
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9 qtd.meta.Compiletime,
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10 qtd.Marshal,
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11 qtd.MOC,
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12 std.string,
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13 std.typetuple,
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14 std.c.stdlib;
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15
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16 class QMetaArgument : Meta
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17 {
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18 }
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19
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20 class QMetaMethod : Meta
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21 {
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22 alias typeof(this) This;
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23
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24 // QMetaArgument[] arguments;
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25 string signature;
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26 int indexOfMethod;
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28 this(string signature_, int indexOfMethod_)
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29 {
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30 signature = signature_;
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31 indexOfMethod = indexOfMethod_;
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32 }
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33
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34 string args() const
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35 {
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36 int openBracket = indexOf(signature, '(');
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37 if(signature.length - openBracket - 2 > 0)
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38 return signature[openBracket + 1 .. $-1];
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39 else
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40 return "";
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41 }
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42
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43 string name() const
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44 {
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45 int openBracket = indexOf(signature, '(');
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46 return signature[0..openBracket];
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47 }
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48
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49 // mixin(Derived) or typeof(Derived) would help a lot here
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50 static create(alias method, M : This)(uint index)
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51 {
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52 alias ParameterTypeTuple!method Args;
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53 return new M(.signature!(Args)(methodName!(method)), index);
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54 }
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55 }
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56
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57 class QMetaSignal : QMetaMethod
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58 {
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59 alias typeof(this) This;
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61 this(string signature_, int indexOfMethod_)
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62 {
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63 super(signature_, indexOfMethod_);
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64 }
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65
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66 static This create(alias method)(uint index)
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67 {
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68 return typeof(super).create!(method, This)(index);
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69 }
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70 }
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71
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72 class QMetaSlot : QMetaMethod
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73 {
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74 alias typeof(this) This;
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76 this(string signature_, int indexOfMethod_)
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77 {
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78 super(signature_, indexOfMethod_);
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79 }
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80
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81 static This create(alias method)(uint index)
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82 {
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83 return typeof(super).create!(method, This)(index);
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84 }
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85 }
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86
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87 class MetaObject : MetaType
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88 {
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89 MetaObject _base;
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90 }
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91
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92 struct QMetaObjectNative
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93 {
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94 QMetaObjectNative *superdata;
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95 immutable(char) *stringdata;
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96 const(uint) *data;
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97 void *extradata;
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98 }
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99
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100 class QMetaException : Exception { this(string msg) { super(msg); } }
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101
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102 final class QMetaObject
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103 {
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104 alias typeof(this) This;
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105
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106 private this() {}
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107
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108 enum Call
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109 {
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110 InvokeMetaMethod,
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111 ReadProperty,
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112 WriteProperty,
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113 ResetProperty,
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114 QueryPropertyDesignable,
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115 QueryPropertyScriptable,
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116 QueryPropertyStored,
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117 QueryPropertyEditable,
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118 QueryPropertyUser,
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119 CreateInstance
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120 }
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121
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122 private
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123 {
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124 QMetaObjectNative* _nativeId;
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125 QMetaObject _base; // super class
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126 QMetaObject _firstDerived; // head of the linked list of derived classes
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127 QMetaObject _next; // next sibling on this derivation level
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128 QMetaMethod[] _methods;
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129 ClassInfo _classInfo;
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130
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131 QObject function(void* nativeId) _createWrapper;
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132 }
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133
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134 private void addDerived(QMetaObject mo)
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135 {
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136 mo._next = _firstDerived;
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137 _firstDerived = mo;
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138 }
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139
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140 // ctor
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141 void construct(T : QObject)(void* nativeId)
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142 {
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143 alias BaseClassesTuple!(T)[0] Base;
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144 This base;
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145 static if (is(Base : QObject))
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146 base = Base.staticMetaObject;
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147
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148 _nativeId = cast(QMetaObjectNative*)nativeId;
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149 T.setStaticMetaObject(this);
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150
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151 if (base)
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152 {
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153 base.addDerived(this);
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154 _base = base;
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155 }
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156 _classInfo = T.classinfo;
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157
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158
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159 static if (isQtType!T)
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160 {
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161 static if (is(T.ConcreteType))
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162 alias T.ConcreteType Concrete;
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163 else
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164 alias T Concrete;
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165
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166 _createWrapper = function QObject(void* nativeId) {
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167 auto obj = new Concrete(nativeId, cast(QtdObjectFlags)(QtdObjectFlags.nativeOwnership | QtdObjectFlags.dynamicEntity));
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168 T.__createEntity(nativeId, cast(void*)obj);
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169 return obj;
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170 };
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171
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172 T._populateMetaInfo;
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173 }
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174 // create run time meta-objects for user-defined signals and slots
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175 else static if (is(typeof(T.methods)))
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176 {
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177 int index = Base.staticMetaObject().methodCount();
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178
350
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179 static if (T.signals.length)
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180 {
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181 foreach (signal; T.signals)
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182 {
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183 addMethod(QMetaSignal.create!signal(index));
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184 index++;
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185 }
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186 }
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187
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188 static if (T.slots.length)
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189 {
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190 foreach (slot; T.slots)
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191 {
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192 addMethod(QMetaSlot.create!slot(index));
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193 index++;
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194 }
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195 }
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196 }
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197 }
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198
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199 // new
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200 static This create(T : QObject)(void* nativeId)
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201 {
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202 auto m = new This();
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203 m.construct!T(nativeId);
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204 return m;
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205 }
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206
253
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207 /++
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208 +/
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209 QMetaObject base()
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210 {
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211 return _base;
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212 }
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213
253
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214 /++
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215 +/
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216 QMetaObjectNative* nativeId()
253
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217 {
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218 return _nativeId;
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219 }
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220
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221 /++
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222 +/
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223 ClassInfo classInfo()
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224 {
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225 return _classInfo;
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226 }
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227
288
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228 const (QMetaMethod[]) methods()
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229 {
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230 return _methods;
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231 }
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232
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233 void addMethod(QMetaMethod method_)
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234 {
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235 _methods ~= method_;
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236 }
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237
322
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238 QMetaMethod lookUpMethod(string slot)
288
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239 {
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240 foreach (method; _methods)
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241 if (method.signature == slot)
322
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242 return method;
288
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243 if (_base)
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244 return _base.lookUpMethod(slot);
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245 else
322
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246 return null;
288
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247 }
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248
322
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249 QMetaSignal lookUpSignal(string signal)
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250 {
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251 foreach (method; _methods)
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252 if (method.signature == signal && cast(QMetaSignal)method)
322
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253 return cast(QMetaSignal)method;
288
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254 if (_base)
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255 return _base.lookUpSignal(signal);
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256 else
322
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257 return null;
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258 }
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259
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260 QMetaMethod[] lookUpMethodOverloads(string methodName)
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261 {
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262 typeof(return) result;
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263 foreach (method; _methods)
323
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264 if (method.name == methodName)
322
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265 result ~= method;
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266 if (_base)
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267 result ~= _base.lookUpMethodOverloads(methodName);
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268 return result;
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269 }
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270
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271 QMetaSignal[] lookUpSignalOverloads(string signalName)
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272 {
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273 typeof(return) result;
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274 foreach (method; _methods)
323
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275 if (method.name == signalName && cast(QMetaSignal)method)
322
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276 result ~= cast(QMetaSignal)method;
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277 if (_base)
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278 result ~= _base.lookUpSignalOverloads(signalName);
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279 return result;
288
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280 }
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281
253
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282 private QMetaObject lookupDerived(void*[] moIds)
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283 {
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284 assert (moIds.length >= 1);
357
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285
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286 for (auto mo = _firstDerived; mo !is null; mo = mo._next)
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287 {
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288 if (mo._nativeId == moIds[0])
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289 {
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290 if (moIds.length == 1) // exact match found
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291 return mo;
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292 else // look deeper
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293 return mo.lookupDerived(moIds[1..$]);
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294 }
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295 }
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296
253
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297 // no initialized wrapper that matches the native object.
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298 // use the base class wrapper
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299 return this;
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300 }
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301
253
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302 QObject getObject(void* nativeObjId)
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303 {
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304 QObject result;
350
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305
253
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306 if (nativeObjId)
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307 {
357
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308 result = cast(QObject)qtd_get_d_qobject(nativeObjId);
253
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309 if (!result)
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310 {
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311 auto moId = qtd_QObject_metaObject(nativeObjId);
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312 if (_nativeId == moId)
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313 result = _createWrapper(nativeObjId);
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314 else
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315 {
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316 // get native metaobjects for the entire derivation lattice
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317 // up to, but not including, the current metaobject.
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318 size_t moCount = 1;
350
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319
253
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320 for (void* tmp = moId;;)
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321 {
357
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322 tmp = qtd_QMetaObject_superClass(tmp);
253
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323 assert(tmp);
357
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324 if (tmp == _nativeId)
253
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325 break;
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326 moCount++;
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327 }
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328
253
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329 void*[] moIds = (cast(void**)alloca(moCount * (void*).sizeof))[0..moCount];
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330
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331 moIds[--moCount] = moId;
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332 while (moCount > 0)
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333 moIds[--moCount] = moId = qtd_QMetaObject_superClass(moId);
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334
253
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335 result = lookupDerived(moIds)._createWrapper(nativeObjId);
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336 }
253
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337 }
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338 }
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339
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340 return result;
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341 }
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342
288
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343 static void activate(QObject sender, QMetaObject m, int local_signal_index, void **argv)
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344 {
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345 qtd_QMetaObject_activate_3(sender.__nativeId, m.nativeId, local_signal_index, argv);
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346 }
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347
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348 static void activate(QObject sender, QMetaObject m, int from_local_signal_index, int to_local_signal_index, void **argv)
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349 {
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350 qtd_QMetaObject_activate_4(sender.__nativeId, m.nativeId, from_local_signal_index, to_local_signal_index, argv);
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351 }
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352
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353 static bool connect(const QObject sender, int signal_index,
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354 const QObject receiver, int method_index,
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355 int type = 0, int *types = null)
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356 {
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357 return qtd_QMetaObject_connect(sender.__nativeId, signal_index, receiver.__nativeId, method_index, type, types);
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358 }
357
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359
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360 int indexOfMethod_Cpp(string method)
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361 {
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362 return qtd_QMetaObject_indexOfMethod(_nativeId, toStringz(method));
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363 }
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364
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365 int methodCount()
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366 {
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367 return qtd_QMetaObject_methodCount(_nativeId);
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368 }
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369
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370 static void connectImpl(QObject sender, string signalString, QObject receiver, string methodString, int type)
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371 {
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372 QMetaSignal[] signals;
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373 QMetaMethod[] methods;
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374 QMetaSignal signal;
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375 QMetaMethod method;
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376
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377 if(indexOf(signalString, '(') > 0)
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378 signal = sender.metaObject.lookUpSignal(signalString);
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379 else
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380 signals = sender.metaObject.lookUpSignalOverloads(signalString); // parameters not specified. Looking for a match
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381
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382 if(indexOf(methodString, '(') > 0)
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383 method = receiver.metaObject.lookUpMethod(methodString);
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384 else
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385 methods = receiver.metaObject.lookUpMethodOverloads(methodString); // parameters not specified. Looking for a match
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386
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387 if(!signal && !method)
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388 {
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389 Top:
322
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390 foreach(sig; signals)
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391 foreach(meth; methods)
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392 if(startsWith(sig.args, meth.args))
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393 {
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394 signal = sig;
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395 method = meth;
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396 break Top;
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397 }
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398 }
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399 else if (!signal)
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400 {
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401 foreach(sig; signals)
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402 if(startsWith(sig.args, method.args))
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403 {
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404 signal = sig;
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405 break;
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406 }
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407 }
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408 else if (!method)
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409 {
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410 foreach(meth; methods)
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411 if(startsWith(signal.args, meth.args))
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412 {
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413 method = meth;
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414 break;
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415 }
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416 }
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417
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418 bool success = false;
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419
322
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420 if(!signal && !method)
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421 {
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422 success = false;
322
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423 }
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424 else
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425 {
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426 int signalIndex = signal.indexOfMethod;
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427 int methodIndex = method.indexOfMethod;
357
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428
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429 success = QMetaObject.connect(sender, signalIndex, receiver, methodIndex, type);
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430 }
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431
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432 if(!success)
357
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433 throw new QMetaException("QMetaObject: Signal " ~ signalString ~ " cannot be connected to slot " ~ methodString);
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434 }
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435 }
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436
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437 /**
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438 */
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439 mixin template Q_CLASSINFO(string name, string value)
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440 {
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441 mixin InnerAttribute!("Q_CLASSINFO", AttributeOptions.allowMultiple, name, value);
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442 }
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443
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444 version (QtdUnittest)
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445 {
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446 unittest
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447 {
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448 static class Test : QObject
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449 {
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450 mixin Q_CLASSINFO!("author", "Sabrina Schweinsteiger");
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451 mixin Q_CLASSINFO!("url", "http://doc.moosesoft.co.uk/1.0/");
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452
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453 mixin Q_OBJECT;
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454 }
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455 }
253
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456 }
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457
288
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458 extern(C) void qtd_QMetaObject_activate_3(void* sender, void* m, int local_signal_index, void **argv);
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459 extern(C) void qtd_QMetaObject_activate_4(void *sender, void* m, int from_local_signal_index, int to_local_signal_index, void **argv);
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460 extern(C) bool qtd_QMetaObject_connect(const void* sender, int signal_index,
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461 const void* receiver, int method_index,
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462 int type, int *types);
350
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463
288
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464 extern(C) int qtd_QMetaObject_indexOfMethod(void *nativeId, const(char) *method);
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465 extern(C) int qtd_QMetaObject_methodCount(void *nativeId);
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466
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467 extern(C) void* qtd_QMetaObject_superClass(void* nativeId);