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annotate d2/qt/core/QMetaObject.d @ 350:31520b2c0b3c

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Removed dependency on parent trait and stringof
author Max Samukha <maxter@spambox.com>
date Thu, 20 May 2010 15:49:08 +0300
parents 96a75b1e5b26
children 9784459f0750
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1 module qt.core.QMetaObject;
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2
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3 import qt.QGlobal;
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4 import qt.core.QObject;
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5 import qtd.QtdObject;
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6
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7 import std.algorithm;
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8 import std.string;
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9 import std.stdio;
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10
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11 import qtd.meta.Runtime;
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12 import qtd.Marshal;
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13
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14 class QMetaArgument : Meta
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15 {
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16 }
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17
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18 class QMetaMethod : Meta
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19 {
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20 alias typeof(this) This;
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21
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22 // QMetaArgument[] arguments;
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23 string signature;
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24 int indexOfMethod;
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25
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26 this(string signature_, int indexOfMethod_)
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27 {
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28 signature = signature_;
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29 indexOfMethod = indexOfMethod_;
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30 }
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31
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32 string args() const
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33 {
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34 int openBracket = indexOf(signature, '(');
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35 if(signature.length - openBracket - 2 > 0)
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36 return signature[openBracket + 1 .. $-1];
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37 else
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38 return "";
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39 }
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40
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41 string name() const
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42 {
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43 int openBracket = indexOf(signature, '(');
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44 return signature[0..openBracket];
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45 }
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47 // mixin(Derived) or typeof(Derived) would help a lot here
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48 static create(alias method, M : This)(uint index)
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49 {
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50 alias ParameterTypeTuple!method Args;
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51 return new M(.signature!(Args)(methodName!(method)), index);
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52 }
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53 }
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54
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55 class QMetaSignal : QMetaMethod
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56 {
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57 alias typeof(this) This;
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58
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59 this(string signature_, int indexOfMethod_)
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60 {
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61 super(signature_, indexOfMethod_);
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62 }
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63
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64 static This create(alias method)(uint index)
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65 {
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66 return typeof(super).create!(method, This)(index);
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67 }
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68 }
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69
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70 class QMetaSlot : QMetaMethod
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71 {
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72 alias typeof(this) This;
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73
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74 this(string signature_, int indexOfMethod_)
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75 {
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76 super(signature_, indexOfMethod_);
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77 }
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78
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79 static This create(alias method)(uint index)
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80 {
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81 return typeof(super).create!(method, This)(index);
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82 }
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83 }
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84
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85 class MetaObject : MetaType
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86 {
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87 MetaObject _base;
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88 }
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89
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90 struct QMetaObjectNative
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91 {
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92 QMetaObjectNative *superdata;
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93 immutable(char) *stringdata;
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94 const(uint) *data;
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95 void *extradata;
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96 }
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97
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98 class QMetaException : Exception { this(string msg) { super(msg); } }
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99
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100 final class QMetaObject
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101 {
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102 alias typeof(this) This;
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103
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104 private this() {}
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105
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106 enum Call
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107 {
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108 InvokeMetaMethod,
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109 ReadProperty,
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110 WriteProperty,
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111 ResetProperty,
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112 QueryPropertyDesignable,
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113 QueryPropertyScriptable,
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114 QueryPropertyStored,
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115 QueryPropertyEditable,
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116 QueryPropertyUser,
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117 CreateInstance
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118 }
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119
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120 private
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121 {
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122 QMetaObjectNative* _nativeId;
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123 QMetaObject _base; // super class
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124 QMetaObject _firstDerived; // head of the linked list of derived classes
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125 QMetaObject _next; // next sibling on this derivation level
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126 QMetaMethod[] _methods;
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127 ClassInfo _classInfo;
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128
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129 QObject function(void* nativeId) _createWrapper;
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130 }
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131
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132 private void addDerived(QMetaObject mo)
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133 {
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134 mo._next = _firstDerived;
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135 _firstDerived = mo;
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136 }
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137
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138 // ctor
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139 void construct(T : QObject)(void* nativeId)
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140 {
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141 alias BaseClassesTuple!(T)[0] Base;
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142 This base;
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143 static if (is(Base : QObject))
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144 base = Base.staticMetaObject;
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145
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146 _nativeId = cast(QMetaObjectNative*)nativeId;
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147 T.setStaticMetaObject(this);
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148
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149 if (base)
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150 {
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151 base.addDerived(this);
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152 _base = base;
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153 }
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154 _classInfo = T.classinfo;
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155
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156
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157 static if (isQtType!T)
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158 {
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159 static if (is(T.ConcreteType))
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160 alias T.ConcreteType Concrete;
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161 else
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162 alias T Concrete;
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163
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164 _createWrapper = function QObject(void* nativeId) {
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165 auto obj = new Concrete(nativeId, cast(QtdObjectFlags)(QtdObjectFlags.nativeOwnership | QtdObjectFlags.dynamicEntity));
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166 T.__createEntity(nativeId, cast(void*)obj);
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167 return obj;
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168 };
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169
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170 T._populateMetaInfo;
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171 }
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172 // create run time meta-objects for user-defined signals and slots
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173 else static if (is(typeof(T.methods)))
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174 {
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175 int index = Base.staticMetaObject().methodCount();
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176
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177 static if (T.signals.length)
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178 {
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179 foreach (signal; T.signals)
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180 {
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181 addMethod(QMetaSignal.create!signal(index));
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182 index++;
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183 }
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184 }
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185
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186 static if (T.slots.length)
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187 {
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188 foreach (slot; T.slots)
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189 {
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190 addMethod(QMetaSlot.create!slot(index));
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191 index++;
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192 }
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193 }
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194 }
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195 }
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196
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197 // new
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198 static This create(T : QObject)(void* nativeId)
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199 {
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200 auto m = new This();
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201 m.construct!T(nativeId);
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202 return m;
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203 }
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204
253
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205 /++
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206 +/
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207 QMetaObject base()
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208 {
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209 return _base;
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210 }
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211
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212 /++
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213 +/
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214 QMetaObjectNative* nativeId()
253
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215 {
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216 return _nativeId;
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217 }
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218
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219 /++
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220 +/
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221 ClassInfo classInfo()
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222 {
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223 return _classInfo;
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224 }
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225
288
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226 const (QMetaMethod[]) methods()
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227 {
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228 return _methods;
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229 }
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230
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231 void addMethod(QMetaMethod method_)
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232 {
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233 _methods ~= method_;
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234 }
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235
322
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236 QMetaMethod lookUpMethod(string slot)
288
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237 {
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238 foreach (method; _methods)
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239 if (method.signature == slot)
322
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240 return method;
288
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241 if (_base)
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242 return _base.lookUpMethod(slot);
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243 else
322
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244 return null;
288
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245 }
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246
322
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247 QMetaSignal lookUpSignal(string signal)
288
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248 {
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249 foreach (method; _methods)
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250 if (method.signature == signal && cast(QMetaSignal)method)
322
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251 return cast(QMetaSignal)method;
288
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252 if (_base)
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253 return _base.lookUpSignal(signal);
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254 else
322
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255 return null;
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256 }
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257
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258 QMetaMethod[] lookUpMethodOverloads(string methodName)
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259 {
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260 typeof(return) result;
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261 foreach (method; _methods)
323
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262 if (method.name == methodName)
322
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263 result ~= method;
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264 if (_base)
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265 result ~= _base.lookUpMethodOverloads(methodName);
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266 return result;
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267 }
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268
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269 QMetaSignal[] lookUpSignalOverloads(string signalName)
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270 {
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271 typeof(return) result;
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272 foreach (method; _methods)
323
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273 if (method.name == signalName && cast(QMetaSignal)method)
322
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274 result ~= cast(QMetaSignal)method;
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275 if (_base)
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276 result ~= _base.lookUpSignalOverloads(signalName);
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277 return result;
288
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278 }
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279
253
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280 private QMetaObject lookupDerived(void*[] moIds)
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281 {
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282 assert (moIds.length >= 1);
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283
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284 for (auto mo = _firstDerived; mo !is null; mo = mo._next)
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285 {
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286 if (mo._nativeId == moIds[0])
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287 {
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288 if (moIds.length == 1) // exact match found
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289 return mo;
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290 else // look deeper
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291 return mo.lookupDerived(moIds[1..$]);
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292 }
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293 }
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294
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295 // no initialized wrapper that matches the native object.
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296 // use the base class wrapper
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297 return this;
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298 }
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299
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300 QObject getObject(void* nativeObjId)
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301 {
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302 QObject result;
350
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303
253
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304 if (nativeObjId)
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305 {
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306 result = cast(QObject)qtd_get_d_qobject(nativeObjId);
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307 if (!result)
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308 {
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309 auto moId = qtd_QObject_metaObject(nativeObjId);
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310 if (_nativeId == moId)
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311 result = _createWrapper(nativeObjId);
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312 else
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313 {
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314 // get native metaobjects for the entire derivation lattice
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315 // up to, but not including, the current metaobject.
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316 size_t moCount = 1;
350
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317
253
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318 for (void* tmp = moId;;)
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319 {
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320 tmp = qtd_QMetaObject_superClass(tmp);
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321 assert(tmp);
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322 if (tmp == _nativeId)
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323 break;
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324 moCount++;
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325 }
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326
253
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327 void*[] moIds = (cast(void**)alloca(moCount * (void*).sizeof))[0..moCount];
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328
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329 moIds[--moCount] = moId;
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330 while (moCount > 0)
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331 moIds[--moCount] = moId = qtd_QMetaObject_superClass(moId);
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332
253
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333 result = lookupDerived(moIds)._createWrapper(nativeObjId);
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334 }
253
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335 }
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336 }
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337
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338 return result;
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339 }
288
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340
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341 static void activate(QObject sender, QMetaObject m, int local_signal_index, void **argv)
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342 {
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343 qtd_QMetaObject_activate_3(sender.__nativeId, m.nativeId, local_signal_index, argv);
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344 }
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345
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346 static void activate(QObject sender, QMetaObject m, int from_local_signal_index, int to_local_signal_index, void **argv)
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347 {
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348 qtd_QMetaObject_activate_4(sender.__nativeId, m.nativeId, from_local_signal_index, to_local_signal_index, argv);
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349 }
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350
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351 static bool connect(const QObject sender, int signal_index,
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352 const QObject receiver, int method_index,
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353 int type = 0, int *types = null)
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354 {
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355 return qtd_QMetaObject_connect(sender.__nativeId, signal_index, receiver.__nativeId, method_index, type, types);
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356 }
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357
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358 int indexOfMethod_Cpp(string method)
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359 {
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360 return qtd_QMetaObject_indexOfMethod(_nativeId, toStringz(method));
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361 }
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362
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363 int methodCount()
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364 {
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365 return qtd_QMetaObject_methodCount(_nativeId);
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366 }
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367
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368 static void connectImpl(QObject sender, string signalString, QObject receiver, string methodString, int type)
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369 {
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370 QMetaSignal[] signals;
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371 QMetaMethod[] methods;
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372 QMetaSignal signal;
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373 QMetaMethod method;
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374
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375 if(indexOf(signalString, '(') > 0)
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376 signal = sender.metaObject.lookUpSignal(signalString);
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377 else
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378 signals = sender.metaObject.lookUpSignalOverloads(signalString); // parameters not specified. Looking for a match
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379
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380 if(indexOf(methodString, '(') > 0)
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381 method = receiver.metaObject.lookUpMethod(methodString);
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382 else
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383 methods = receiver.metaObject.lookUpMethodOverloads(methodString); // parameters not specified. Looking for a match
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384
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385 if(!signal && !method)
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386 {
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387 Top:
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388 foreach(sig; signals)
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389 foreach(meth; methods)
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390 if(startsWith(sig.args, meth.args))
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391 {
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392 signal = sig;
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393 method = meth;
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394 break Top;
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395 }
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396 }
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397 else if (!signal)
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398 {
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399 foreach(sig; signals)
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400 if(startsWith(sig.args, method.args))
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401 {
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402 signal = sig;
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403 break;
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404 }
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405 }
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406 else if (!method)
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407 {
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408 foreach(meth; methods)
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409 if(startsWith(signal.args, meth.args))
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410 {
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411 method = meth;
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412 break;
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413 }
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414 }
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415
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416 bool success = false;
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417
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418 if(!signal && !method)
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419 {
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420 success = false;
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421 }
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422 else
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423 {
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424 int signalIndex = signal.indexOfMethod;
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425 int methodIndex = method.indexOfMethod;
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426 success = QMetaObject.connect(sender, signalIndex, receiver, methodIndex, type);
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427 }
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428
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429 if(!success)
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430 throw new QMetaException("QMetaObject: Signal " ~ signalString ~ " and slot " ~ methodString ~ " cannot be found");
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431 }
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432 }
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433
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434 extern(C) void qtd_QMetaObject_activate_3(void* sender, void* m, int local_signal_index, void **argv);
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435 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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436 extern(C) bool qtd_QMetaObject_connect(const void* sender, int signal_index,
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437 const void* receiver, int method_index,
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438 int type, int *types);
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439
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440 extern(C) int qtd_QMetaObject_indexOfMethod(void *nativeId, const(char) *method);
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441 extern(C) int qtd_QMetaObject_methodCount(void *nativeId);
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442
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443 extern(C) void* qtd_QMetaObject_superClass(void* nativeId);