1 | /****************************************************************************
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2 | **
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3 | ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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4 | ** All rights reserved.
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5 | ** Contact: Nokia Corporation (qt-info@nokia.com)
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6 | **
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7 | ** This file is part of the QtDeclarative module of the Qt Toolkit.
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8 | **
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9 | ** $QT_BEGIN_LICENSE:LGPL$
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10 | ** Commercial Usage
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11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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12 | ** accordance with the Qt Commercial License Agreement provided with the
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13 | ** Software or, alternatively, in accordance with the terms contained in
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14 | ** a written agreement between you and Nokia.
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15 | **
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16 | ** GNU Lesser General Public License Usage
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17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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18 | ** General Public License version 2.1 as published by the Free Software
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19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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20 | ** packaging of this file. Please review the following information to
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21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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23 | **
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24 | ** In addition, as a special exception, Nokia gives you certain additional
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25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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27 | **
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28 | ** GNU General Public License Usage
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29 | ** Alternatively, this file may be used under the terms of the GNU
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30 | ** General Public License version 3.0 as published by the Free Software
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31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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32 | ** packaging of this file. Please review the following information to
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33 | ** ensure the GNU General Public License version 3.0 requirements will be
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34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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35 | **
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36 | ** If you have questions regarding the use of this file, please contact
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37 | ** Nokia at qt-info@nokia.com.
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38 | ** $QT_END_LICENSE$
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39 | **
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40 | ****************************************************************************/
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41 |
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42 | #include "private/qdeclarativeobjectscriptclass_p.h"
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43 |
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44 | #include "private/qdeclarativeengine_p.h"
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45 | #include "private/qdeclarativecontext_p.h"
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46 | #include "private/qdeclarativedata_p.h"
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47 | #include "private/qdeclarativetypenamescriptclass_p.h"
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48 | #include "private/qdeclarativelistscriptclass_p.h"
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49 | #include "private/qdeclarativebinding_p.h"
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50 | #include "private/qdeclarativeguard_p.h"
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51 | #include "private/qdeclarativevmemetaobject_p.h"
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52 |
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53 | #include <QtCore/qtimer.h>
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54 | #include <QtCore/qvarlengtharray.h>
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55 | #include <QtScript/qscriptcontextinfo.h>
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56 |
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57 | Q_DECLARE_METATYPE(QScriptValue);
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58 |
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59 | QT_BEGIN_NAMESPACE
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60 |
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61 | struct ObjectData : public QScriptDeclarativeClass::Object {
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62 | ObjectData(QObject *o, int t) : object(o), type(t) {
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63 | if (o) {
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64 | QDeclarativeData *ddata = QDeclarativeData::get(object, true);
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65 | if (ddata) ddata->objectDataRefCount++;
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66 | }
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67 | }
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68 |
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69 | virtual ~ObjectData() {
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70 | if (object && !object->parent()) {
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71 | QDeclarativeData *ddata = QDeclarativeData::get(object, false);
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72 | if (ddata && !ddata->indestructible && 0 == --ddata->objectDataRefCount)
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73 | object->deleteLater();
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74 | }
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75 | }
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76 |
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77 | QDeclarativeGuard<QObject> object;
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78 | int type;
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79 | };
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80 |
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81 | /*
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82 | The QDeclarativeObjectScriptClass handles property access for QObjects
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83 | via QtScript. It is also used to provide a more useful API in
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84 | QtScript for QML.
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85 | */
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86 | QDeclarativeObjectScriptClass::QDeclarativeObjectScriptClass(QDeclarativeEngine *bindEngine)
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87 | : QScriptDeclarativeClass(QDeclarativeEnginePrivate::getScriptEngine(bindEngine)),
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88 | methods(bindEngine), lastData(0), engine(bindEngine)
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89 | {
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90 | QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
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91 |
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92 | m_destroy = scriptEngine->newFunction(destroy);
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93 | m_destroyId = createPersistentIdentifier(QLatin1String("destroy"));
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94 | m_toString = scriptEngine->newFunction(tostring);
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95 | m_toStringId = createPersistentIdentifier(QLatin1String("toString"));
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96 | }
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97 |
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98 | QDeclarativeObjectScriptClass::~QDeclarativeObjectScriptClass()
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99 | {
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100 | }
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101 |
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102 | QScriptValue QDeclarativeObjectScriptClass::newQObject(QObject *object, int type)
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103 | {
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104 | QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
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105 |
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106 | if (!object)
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107 | return scriptEngine->nullValue();
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108 | // return newObject(scriptEngine, this, new ObjectData(object, type));
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109 |
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110 | if (QObjectPrivate::get(object)->wasDeleted)
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111 | return scriptEngine->undefinedValue();
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112 |
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113 | QDeclarativeData *ddata = QDeclarativeData::get(object, true);
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114 |
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115 | if (!ddata) {
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116 | return scriptEngine->undefinedValue();
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117 | } else if (!ddata->indestructible && !object->parent()) {
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118 | return newObject(scriptEngine, this, new ObjectData(object, type));
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119 | } else if (!ddata->scriptValue) {
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120 | ddata->scriptValue = new QScriptValue(newObject(scriptEngine, this, new ObjectData(object, type)));
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121 | return *ddata->scriptValue;
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122 | } else if (ddata->scriptValue->engine() == QDeclarativeEnginePrivate::getScriptEngine(engine)) {
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123 | return *ddata->scriptValue;
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124 | } else {
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125 | return newObject(scriptEngine, this, new ObjectData(object, type));
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126 | }
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127 | }
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128 |
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129 | QObject *QDeclarativeObjectScriptClass::toQObject(const QScriptValue &value) const
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130 | {
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131 | return value.toQObject();
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132 | }
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133 |
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134 | int QDeclarativeObjectScriptClass::objectType(const QScriptValue &value) const
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135 | {
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136 | if (scriptClass(value) != this)
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137 | return QVariant::Invalid;
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138 |
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139 | Object *o = object(value);
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140 | return ((ObjectData*)(o))->type;
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141 | }
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142 |
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143 | QScriptClass::QueryFlags
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144 | QDeclarativeObjectScriptClass::queryProperty(Object *object, const Identifier &name,
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145 | QScriptClass::QueryFlags flags)
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146 | {
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147 | return queryProperty(toQObject(object), name, flags, 0);
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148 | }
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149 |
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150 | QScriptClass::QueryFlags
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151 | QDeclarativeObjectScriptClass::queryProperty(QObject *obj, const Identifier &name,
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152 | QScriptClass::QueryFlags flags, QDeclarativeContextData *evalContext,
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153 | QueryHints hints)
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154 | {
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155 | Q_UNUSED(flags);
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156 | lastData = 0;
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157 | lastTNData = 0;
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158 |
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159 | if (name == m_destroyId.identifier ||
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160 | name == m_toStringId.identifier)
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161 | return QScriptClass::HandlesReadAccess;
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162 |
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163 | if (!obj)
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164 | return 0;
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165 |
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166 | QDeclarativeEnginePrivate *enginePrivate = QDeclarativeEnginePrivate::get(engine);
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167 | lastData = QDeclarativePropertyCache::property(engine, obj, name, local);
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168 |
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169 | if (lastData)
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170 | return QScriptClass::HandlesReadAccess | QScriptClass::HandlesWriteAccess;
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171 |
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172 | if (!(hints & SkipAttachedProperties)) {
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173 | if (!evalContext && context()) {
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174 | // Global object, QScriptContext activation object, QDeclarativeContext object
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175 | QScriptValue scopeNode = scopeChainValue(context(), -3);
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176 | if (scopeNode.isValid()) {
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177 | Q_ASSERT(scriptClass(scopeNode) == enginePrivate->contextClass);
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178 |
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179 | evalContext = enginePrivate->contextClass->contextFromValue(scopeNode);
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180 | }
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181 | }
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182 |
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183 | if (evalContext && evalContext->imports) {
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184 | QDeclarativeTypeNameCache::Data *data = evalContext->imports->data(name);
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185 | if (data) {
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186 | lastTNData = data;
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187 | return QScriptClass::HandlesReadAccess;
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188 | }
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189 | }
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190 | }
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191 |
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192 | if (!(hints & ImplicitObject)) {
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193 | local.coreIndex = -1;
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194 | lastData = &local;
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195 | return QScriptClass::HandlesWriteAccess;
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196 | }
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197 |
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198 | return 0;
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199 | }
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200 |
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201 | QDeclarativeObjectScriptClass::Value
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202 | QDeclarativeObjectScriptClass::property(Object *object, const Identifier &name)
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203 | {
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204 | return property(toQObject(object), name);
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205 | }
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206 |
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207 | QDeclarativeObjectScriptClass::Value
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208 | QDeclarativeObjectScriptClass::property(QObject *obj, const Identifier &name)
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209 | {
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210 | QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
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211 |
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212 | if (name == m_destroyId.identifier)
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213 | return Value(scriptEngine, m_destroy);
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214 | else if (name == m_toStringId.identifier)
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215 | return Value(scriptEngine, m_toString);
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216 |
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217 | if (lastData && !lastData->isValid())
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218 | return Value();
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219 |
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220 | Q_ASSERT(obj);
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221 |
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222 | QDeclarativeEnginePrivate *enginePriv = QDeclarativeEnginePrivate::get(engine);
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223 |
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224 | if (lastTNData) {
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225 |
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226 | if (lastTNData->type)
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227 | return Value(scriptEngine, enginePriv->typeNameClass->newObject(obj, lastTNData->type));
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228 | else
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229 | return Value(scriptEngine, enginePriv->typeNameClass->newObject(obj, lastTNData->typeNamespace));
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230 |
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231 | } else if (lastData->flags & QDeclarativePropertyCache::Data::IsFunction) {
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232 | if (lastData->flags & QDeclarativePropertyCache::Data::IsVMEFunction) {
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233 | return Value(scriptEngine, ((QDeclarativeVMEMetaObject *)(obj->metaObject()))->vmeMethod(lastData->coreIndex));
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234 | } else {
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235 | // Uncomment to use QtScript method call logic
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236 | // QScriptValue sobj = scriptEngine->newQObject(obj);
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237 | // return Value(scriptEngine, sobj.property(toString(name)));
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238 | return Value(scriptEngine, methods.newMethod(obj, lastData));
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239 | }
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240 | } else {
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241 | if (enginePriv->captureProperties && !(lastData->flags & QDeclarativePropertyCache::Data::IsConstant)) {
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242 | if (lastData->coreIndex == 0) {
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243 | enginePriv->capturedProperties <<
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244 | QDeclarativeEnginePrivate::CapturedProperty(QDeclarativeData::get(obj, true)->objectNameNotifier());
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245 | } else {
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246 | enginePriv->capturedProperties <<
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247 | QDeclarativeEnginePrivate::CapturedProperty(obj, lastData->coreIndex, lastData->notifyIndex);
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248 | }
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249 | }
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250 |
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251 | if (QDeclarativeValueTypeFactory::isValueType((uint)lastData->propType)) {
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252 | QDeclarativeValueType *valueType = enginePriv->valueTypes[lastData->propType];
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253 | if (valueType)
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254 | return Value(scriptEngine, enginePriv->valueTypeClass->newObject(obj, lastData->coreIndex, valueType));
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255 | }
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256 |
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257 | if (lastData->flags & QDeclarativePropertyCache::Data::IsQList) {
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258 | return Value(scriptEngine, enginePriv->listClass->newList(obj, lastData->coreIndex, lastData->propType));
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259 | } else if (lastData->flags & QDeclarativePropertyCache::Data::IsQObjectDerived) {
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260 | QObject *rv = 0;
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261 | void *args[] = { &rv, 0 };
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262 | QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
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263 | return Value(scriptEngine, newQObject(rv, lastData->propType));
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264 | } else if (lastData->flags & QDeclarativePropertyCache::Data::IsQScriptValue) {
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265 | QScriptValue rv = scriptEngine->nullValue();
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266 | void *args[] = { &rv, 0 };
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267 | QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
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268 | return Value(scriptEngine, rv);
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269 | } else if (lastData->propType == QMetaType::QReal) {
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270 | qreal rv = 0;
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271 | void *args[] = { &rv, 0 };
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272 | QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
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273 | return Value(scriptEngine, rv);
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274 | } else if (lastData->propType == QMetaType::Int || lastData->flags & QDeclarativePropertyCache::Data::IsEnumType) {
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275 | int rv = 0;
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276 | void *args[] = { &rv, 0 };
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277 | QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
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278 | return Value(scriptEngine, rv);
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279 | } else if (lastData->propType == QMetaType::Bool) {
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280 | bool rv = false;
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281 | void *args[] = { &rv, 0 };
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282 | QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
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283 | return Value(scriptEngine, rv);
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284 | } else if (lastData->propType == QMetaType::QString) {
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285 | QString rv;
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286 | void *args[] = { &rv, 0 };
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287 | QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
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288 | return Value(scriptEngine, rv);
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289 | } else if (lastData->propType == QMetaType::UInt) {
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290 | uint rv = 0;
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291 | void *args[] = { &rv, 0 };
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292 | QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
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293 | return Value(scriptEngine, rv);
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294 | } else if (lastData->propType == QMetaType::Float) {
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295 | float rv = 0;
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296 | void *args[] = { &rv, 0 };
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297 | QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
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298 | return Value(scriptEngine, rv);
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299 | } else if (lastData->propType == QMetaType::Double) {
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300 | double rv = 0;
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301 | void *args[] = { &rv, 0 };
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302 | QMetaObject::metacall(obj, QMetaObject::ReadProperty, lastData->coreIndex, args);
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303 | return Value(scriptEngine, rv);
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304 | } else {
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305 | QVariant var = obj->metaObject()->property(lastData->coreIndex).read(obj);
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306 | return Value(scriptEngine, enginePriv->scriptValueFromVariant(var));
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307 | }
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308 | }
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309 | }
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310 |
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311 | void QDeclarativeObjectScriptClass::setProperty(Object *object,
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312 | const Identifier &name,
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313 | const QScriptValue &value)
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314 | {
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315 | return setProperty(toQObject(object), name, value, context());
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316 | }
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317 |
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318 | void QDeclarativeObjectScriptClass::setProperty(QObject *obj,
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319 | const Identifier &name,
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320 | const QScriptValue &value,
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321 | QScriptContext *context,
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322 | QDeclarativeContextData *evalContext)
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323 | {
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324 | Q_UNUSED(name);
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325 |
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326 | Q_ASSERT(obj);
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327 | Q_ASSERT(lastData);
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328 | Q_ASSERT(context);
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329 |
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330 | if (!lastData->isValid()) {
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331 | QString error = QLatin1String("Cannot assign to non-existent property \"") +
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332 | toString(name) + QLatin1Char('\"');
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333 | context->throwError(error);
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334 | return;
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335 | }
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336 |
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337 | if (!(lastData->flags & QDeclarativePropertyCache::Data::IsWritable) &&
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338 | !(lastData->flags & QDeclarativePropertyCache::Data::IsQList)) {
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339 | QString error = QLatin1String("Cannot assign to read-only property \"") +
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340 | toString(name) + QLatin1Char('\"');
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341 | context->throwError(error);
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342 | return;
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343 | }
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344 |
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345 | QDeclarativeEnginePrivate *enginePriv = QDeclarativeEnginePrivate::get(engine);
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346 |
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347 | if (!evalContext) {
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348 | // Global object, QScriptContext activation object, QDeclarativeContext object
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349 | QScriptValue scopeNode = scopeChainValue(context, -3);
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350 | if (scopeNode.isValid()) {
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351 | Q_ASSERT(scriptClass(scopeNode) == enginePriv->contextClass);
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352 |
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353 | evalContext = enginePriv->contextClass->contextFromValue(scopeNode);
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354 | }
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355 | }
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356 |
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357 | QDeclarativeAbstractBinding *delBinding =
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358 | QDeclarativePropertyPrivate::setBinding(obj, lastData->coreIndex, -1, 0);
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359 | if (delBinding)
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360 | delBinding->destroy();
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361 |
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362 | if (value.isNull() && lastData->flags & QDeclarativePropertyCache::Data::IsQObjectDerived) {
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363 | QObject *o = 0;
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364 | int status = -1;
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365 | int flags = 0;
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366 | void *argv[] = { &o, 0, &status, &flags };
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367 | QMetaObject::metacall(obj, QMetaObject::WriteProperty, lastData->coreIndex, argv);
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368 | } else if (value.isUndefined() && lastData->flags & QDeclarativePropertyCache::Data::IsResettable) {
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369 | void *a[] = { 0 };
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370 | QMetaObject::metacall(obj, QMetaObject::ResetProperty, lastData->coreIndex, a);
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371 | } else if (value.isUndefined() && lastData->propType == qMetaTypeId<QVariant>()) {
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372 | QDeclarativePropertyPrivate::write(obj, *lastData, QVariant(), evalContext);
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373 | } else if (value.isUndefined()) {
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374 | QString error = QLatin1String("Cannot assign [undefined] to ") +
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375 | QLatin1String(QMetaType::typeName(lastData->propType));
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376 | context->throwError(error);
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377 | } else if (!value.isRegExp() && value.isFunction()) {
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378 | QString error = QLatin1String("Cannot assign a function to a property.");
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379 | context->throwError(error);
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380 | } else {
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381 | QVariant v;
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382 | if (lastData->flags & QDeclarativePropertyCache::Data::IsQList)
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383 | v = enginePriv->scriptValueToVariant(value, qMetaTypeId<QList<QObject *> >());
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384 | else
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385 | v = enginePriv->scriptValueToVariant(value, lastData->propType);
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386 |
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387 | if (!QDeclarativePropertyPrivate::write(obj, *lastData, v, evalContext)) {
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388 | const char *valueType = 0;
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389 | if (v.userType() == QVariant::Invalid) valueType = "null";
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390 | else valueType = QMetaType::typeName(v.userType());
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391 |
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392 | QString error = QLatin1String("Cannot assign ") +
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393 | QLatin1String(valueType) +
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394 | QLatin1String(" to ") +
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395 | QLatin1String(QMetaType::typeName(lastData->propType));
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396 | context->throwError(error);
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397 | }
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398 | }
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399 | }
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400 |
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401 | bool QDeclarativeObjectScriptClass::isQObject() const
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402 | {
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403 | return true;
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404 | }
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405 |
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406 | QObject *QDeclarativeObjectScriptClass::toQObject(Object *object, bool *ok)
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407 | {
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408 | if (ok) *ok = true;
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409 |
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410 | ObjectData *data = (ObjectData*)object;
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411 | return data->object.data();
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412 | }
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413 |
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414 | QScriptValue QDeclarativeObjectScriptClass::tostring(QScriptContext *context, QScriptEngine *)
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415 | {
|
---|
416 | QObject* obj = context->thisObject().toQObject();
|
---|
417 |
|
---|
418 | QString ret;
|
---|
419 | if(obj){
|
---|
420 | QString objectName = obj->objectName();
|
---|
421 |
|
---|
422 | ret += QString::fromUtf8(obj->metaObject()->className());
|
---|
423 | ret += QLatin1String("(0x");
|
---|
424 | ret += QString::number((quintptr)obj,16);
|
---|
425 |
|
---|
426 | if (!objectName.isEmpty()) {
|
---|
427 | ret += QLatin1String(", \"");
|
---|
428 | ret += objectName;
|
---|
429 | ret += QLatin1Char('\"');
|
---|
430 | }
|
---|
431 |
|
---|
432 | ret += QLatin1Char(')');
|
---|
433 | }else{
|
---|
434 | ret += QLatin1String("null");
|
---|
435 | }
|
---|
436 | return QScriptValue(ret);
|
---|
437 | }
|
---|
438 |
|
---|
439 | QScriptValue QDeclarativeObjectScriptClass::destroy(QScriptContext *context, QScriptEngine *engine)
|
---|
440 | {
|
---|
441 | QDeclarativeEnginePrivate *p = QDeclarativeEnginePrivate::get(engine);
|
---|
442 | QScriptValue that = context->thisObject();
|
---|
443 |
|
---|
444 | if (scriptClass(that) != p->objectClass)
|
---|
445 | return engine->undefinedValue();
|
---|
446 |
|
---|
447 | ObjectData *data = (ObjectData *)p->objectClass->object(that);
|
---|
448 | if (!data->object)
|
---|
449 | return engine->undefinedValue();
|
---|
450 |
|
---|
451 | QDeclarativeData *ddata = QDeclarativeData::get(data->object, false);
|
---|
452 | if (!ddata || ddata->indestructible)
|
---|
453 | return engine->currentContext()->throwError(QLatin1String("Invalid attempt to destroy() an indestructible object"));
|
---|
454 |
|
---|
455 | QObject *obj = data->object;
|
---|
456 | int delay = 0;
|
---|
457 | if (context->argumentCount() > 0)
|
---|
458 | delay = context->argument(0).toInt32();
|
---|
459 | if (delay > 0)
|
---|
460 | QTimer::singleShot(delay, obj, SLOT(deleteLater()));
|
---|
461 | else
|
---|
462 | obj->deleteLater();
|
---|
463 |
|
---|
464 | return engine->undefinedValue();
|
---|
465 | }
|
---|
466 |
|
---|
467 | QStringList QDeclarativeObjectScriptClass::propertyNames(Object *object)
|
---|
468 | {
|
---|
469 | QObject *obj = toQObject(object);
|
---|
470 | if (!obj)
|
---|
471 | return QStringList();
|
---|
472 |
|
---|
473 | QDeclarativeEnginePrivate *enginePrivate = QDeclarativeEnginePrivate::get(engine);
|
---|
474 |
|
---|
475 | QDeclarativePropertyCache *cache = 0;
|
---|
476 | QDeclarativeData *ddata = QDeclarativeData::get(obj);
|
---|
477 | if (ddata)
|
---|
478 | cache = ddata->propertyCache;
|
---|
479 | if (!cache) {
|
---|
480 | cache = enginePrivate->cache(obj);
|
---|
481 | if (cache) {
|
---|
482 | if (ddata) { cache->addref(); ddata->propertyCache = cache; }
|
---|
483 | } else {
|
---|
484 | // Not cachable - fall back to QMetaObject (eg. dynamic meta object)
|
---|
485 | // XXX QDeclarativeOpenMetaObject has a cache, so this is suboptimal.
|
---|
486 | // XXX This is a workaround for QTBUG-9420.
|
---|
487 | const QMetaObject *mo = obj->metaObject();
|
---|
488 | QStringList r;
|
---|
489 | int pc = mo->propertyCount();
|
---|
490 | int po = mo->propertyOffset();
|
---|
491 | for (int i=po; i<pc; ++i)
|
---|
492 | r += QString::fromUtf8(mo->property(i).name());
|
---|
493 | return r;
|
---|
494 | }
|
---|
495 | }
|
---|
496 | return cache->propertyNames();
|
---|
497 | }
|
---|
498 |
|
---|
499 | bool QDeclarativeObjectScriptClass::compare(Object *o1, Object *o2)
|
---|
500 | {
|
---|
501 | ObjectData *d1 = (ObjectData *)o1;
|
---|
502 | ObjectData *d2 = (ObjectData *)o2;
|
---|
503 |
|
---|
504 | return d1 == d2 || d1->object == d2->object;
|
---|
505 | }
|
---|
506 |
|
---|
507 | struct MethodData : public QScriptDeclarativeClass::Object {
|
---|
508 | MethodData(QObject *o, const QDeclarativePropertyCache::Data &d) : object(o), data(d) {}
|
---|
509 |
|
---|
510 | QDeclarativeGuard<QObject> object;
|
---|
511 | QDeclarativePropertyCache::Data data;
|
---|
512 | };
|
---|
513 |
|
---|
514 | QDeclarativeObjectMethodScriptClass::QDeclarativeObjectMethodScriptClass(QDeclarativeEngine *bindEngine)
|
---|
515 | : QScriptDeclarativeClass(QDeclarativeEnginePrivate::getScriptEngine(bindEngine)),
|
---|
516 | engine(bindEngine)
|
---|
517 | {
|
---|
518 | qRegisterMetaType<QList<QObject *> >("QList<QObject *>");
|
---|
519 |
|
---|
520 | setSupportsCall(true);
|
---|
521 |
|
---|
522 | QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
|
---|
523 |
|
---|
524 | m_connect = scriptEngine->newFunction(connect);
|
---|
525 | m_connectId = createPersistentIdentifier(QLatin1String("connect"));
|
---|
526 | m_disconnect = scriptEngine->newFunction(disconnect);
|
---|
527 | m_disconnectId = createPersistentIdentifier(QLatin1String("disconnect"));
|
---|
528 | }
|
---|
529 |
|
---|
530 | QDeclarativeObjectMethodScriptClass::~QDeclarativeObjectMethodScriptClass()
|
---|
531 | {
|
---|
532 | }
|
---|
533 |
|
---|
534 | QScriptValue QDeclarativeObjectMethodScriptClass::newMethod(QObject *object, const QDeclarativePropertyCache::Data *method)
|
---|
535 | {
|
---|
536 | QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
|
---|
537 |
|
---|
538 | return newObject(scriptEngine, this, new MethodData(object, *method));
|
---|
539 | }
|
---|
540 |
|
---|
541 | QScriptValue QDeclarativeObjectMethodScriptClass::connect(QScriptContext *context, QScriptEngine *engine)
|
---|
542 | {
|
---|
543 | QDeclarativeEnginePrivate *p = QDeclarativeEnginePrivate::get(engine);
|
---|
544 |
|
---|
545 | QScriptValue that = context->thisObject();
|
---|
546 | if (&p->objectClass->methods != scriptClass(that))
|
---|
547 | return engine->undefinedValue();
|
---|
548 |
|
---|
549 | MethodData *data = (MethodData *)object(that);
|
---|
550 |
|
---|
551 | if (!data->object || context->argumentCount() == 0)
|
---|
552 | return engine->undefinedValue();
|
---|
553 |
|
---|
554 | QByteArray signal("2");
|
---|
555 | signal.append(data->object->metaObject()->method(data->data.coreIndex).signature());
|
---|
556 |
|
---|
557 | if (context->argumentCount() == 1) {
|
---|
558 | qScriptConnect(data->object, signal.constData(), QScriptValue(), context->argument(0));
|
---|
559 | } else {
|
---|
560 | qScriptConnect(data->object, signal.constData(), context->argument(0), context->argument(1));
|
---|
561 | }
|
---|
562 |
|
---|
563 | return engine->undefinedValue();
|
---|
564 | }
|
---|
565 |
|
---|
566 | QScriptValue QDeclarativeObjectMethodScriptClass::disconnect(QScriptContext *context, QScriptEngine *engine)
|
---|
567 | {
|
---|
568 | QDeclarativeEnginePrivate *p = QDeclarativeEnginePrivate::get(engine);
|
---|
569 |
|
---|
570 | QScriptValue that = context->thisObject();
|
---|
571 | if (&p->objectClass->methods != scriptClass(that))
|
---|
572 | return engine->undefinedValue();
|
---|
573 |
|
---|
574 | MethodData *data = (MethodData *)object(that);
|
---|
575 |
|
---|
576 | if (!data->object || context->argumentCount() == 0)
|
---|
577 | return engine->undefinedValue();
|
---|
578 |
|
---|
579 | QByteArray signal("2");
|
---|
580 | signal.append(data->object->metaObject()->method(data->data.coreIndex).signature());
|
---|
581 |
|
---|
582 | if (context->argumentCount() == 1) {
|
---|
583 | qScriptDisconnect(data->object, signal.constData(), QScriptValue(), context->argument(0));
|
---|
584 | } else {
|
---|
585 | qScriptDisconnect(data->object, signal.constData(), context->argument(0), context->argument(1));
|
---|
586 | }
|
---|
587 |
|
---|
588 | return engine->undefinedValue();
|
---|
589 | }
|
---|
590 |
|
---|
591 | QScriptClass::QueryFlags
|
---|
592 | QDeclarativeObjectMethodScriptClass::queryProperty(Object *, const Identifier &name,
|
---|
593 | QScriptClass::QueryFlags flags)
|
---|
594 | {
|
---|
595 | Q_UNUSED(flags);
|
---|
596 | if (name == m_connectId.identifier || name == m_disconnectId.identifier)
|
---|
597 | return QScriptClass::HandlesReadAccess;
|
---|
598 | else
|
---|
599 | return 0;
|
---|
600 |
|
---|
601 | }
|
---|
602 |
|
---|
603 | QDeclarativeObjectMethodScriptClass::Value
|
---|
604 | QDeclarativeObjectMethodScriptClass::property(Object *, const Identifier &name)
|
---|
605 | {
|
---|
606 | QScriptEngine *scriptEngine = QDeclarativeEnginePrivate::getScriptEngine(engine);
|
---|
607 |
|
---|
608 | if (name == m_connectId.identifier)
|
---|
609 | return Value(scriptEngine, m_connect);
|
---|
610 | else if (name == m_disconnectId.identifier)
|
---|
611 | return Value(scriptEngine, m_disconnect);
|
---|
612 | else
|
---|
613 | return Value();
|
---|
614 | }
|
---|
615 |
|
---|
616 | namespace {
|
---|
617 | struct MetaCallArgument {
|
---|
618 | inline MetaCallArgument();
|
---|
619 | inline ~MetaCallArgument();
|
---|
620 | inline void *dataPtr();
|
---|
621 |
|
---|
622 | inline void initAsType(int type, QDeclarativeEngine *);
|
---|
623 | void fromScriptValue(int type, QDeclarativeEngine *, const QScriptValue &);
|
---|
624 | inline QScriptDeclarativeClass::Value toValue(QDeclarativeEngine *);
|
---|
625 |
|
---|
626 | private:
|
---|
627 | MetaCallArgument(const MetaCallArgument &);
|
---|
628 |
|
---|
629 | inline void cleanup();
|
---|
630 |
|
---|
631 | char data[4 * sizeof(void *)];
|
---|
632 | int type;
|
---|
633 | bool isObjectType;
|
---|
634 | };
|
---|
635 | }
|
---|
636 |
|
---|
637 | MetaCallArgument::MetaCallArgument()
|
---|
638 | : type(QVariant::Invalid), isObjectType(false)
|
---|
639 | {
|
---|
640 | }
|
---|
641 |
|
---|
642 | MetaCallArgument::~MetaCallArgument()
|
---|
643 | {
|
---|
644 | cleanup();
|
---|
645 | }
|
---|
646 |
|
---|
647 | void MetaCallArgument::cleanup()
|
---|
648 | {
|
---|
649 | if (type == QMetaType::QString) {
|
---|
650 | ((QString *)&data)->~QString();
|
---|
651 | } else if (type == -1 || type == qMetaTypeId<QVariant>()) {
|
---|
652 | ((QVariant *)&data)->~QVariant();
|
---|
653 | } else if (type == qMetaTypeId<QScriptValue>()) {
|
---|
654 | ((QScriptValue *)&data)->~QScriptValue();
|
---|
655 | } else if (type == qMetaTypeId<QList<QObject *> >()) {
|
---|
656 | ((QList<QObject *> *)&data)->~QList<QObject *>();
|
---|
657 | }
|
---|
658 | }
|
---|
659 |
|
---|
660 | void *MetaCallArgument::dataPtr()
|
---|
661 | {
|
---|
662 | if (type == -1)
|
---|
663 | return ((QVariant *)data)->data();
|
---|
664 | else
|
---|
665 | return (void *)&data;
|
---|
666 | }
|
---|
667 |
|
---|
668 | void MetaCallArgument::initAsType(int callType, QDeclarativeEngine *e)
|
---|
669 | {
|
---|
670 | if (type != 0) { cleanup(); type = 0; }
|
---|
671 | if (callType == 0) return;
|
---|
672 |
|
---|
673 | QScriptEngine *engine = QDeclarativeEnginePrivate::getScriptEngine(e);
|
---|
674 |
|
---|
675 | if (callType == qMetaTypeId<QScriptValue>()) {
|
---|
676 | new (&data) QScriptValue(engine->undefinedValue());
|
---|
677 | type = callType;
|
---|
678 | } else if (callType == QMetaType::Int ||
|
---|
679 | callType == QMetaType::UInt ||
|
---|
680 | callType == QMetaType::Bool ||
|
---|
681 | callType == QMetaType::Double ||
|
---|
682 | callType == QMetaType::Float) {
|
---|
683 | type = callType;
|
---|
684 | } else if (callType == QMetaType::QObjectStar) {
|
---|
685 | *((QObject **)&data) = 0;
|
---|
686 | type = callType;
|
---|
687 | } else if (callType == QMetaType::QString) {
|
---|
688 | new (&data) QString();
|
---|
689 | type = callType;
|
---|
690 | } else if (callType == qMetaTypeId<QVariant>()) {
|
---|
691 | type = callType;
|
---|
692 | new (&data) QVariant();
|
---|
693 | } else if (callType == qMetaTypeId<QList<QObject *> >()) {
|
---|
694 | type = callType;
|
---|
695 | new (&data) QList<QObject *>();
|
---|
696 | } else {
|
---|
697 | type = -1;
|
---|
698 | new (&data) QVariant(callType, (void *)0);
|
---|
699 | }
|
---|
700 | }
|
---|
701 |
|
---|
702 | void MetaCallArgument::fromScriptValue(int callType, QDeclarativeEngine *engine, const QScriptValue &value)
|
---|
703 | {
|
---|
704 | if (type != 0) { cleanup(); type = 0; }
|
---|
705 |
|
---|
706 | if (callType == qMetaTypeId<QScriptValue>()) {
|
---|
707 | new (&data) QScriptValue(value);
|
---|
708 | type = qMetaTypeId<QScriptValue>();
|
---|
709 | } else if (callType == QMetaType::Int) {
|
---|
710 | *((int *)&data) = int(value.toInt32());
|
---|
711 | type = callType;
|
---|
712 | } else if (callType == QMetaType::UInt) {
|
---|
713 | *((uint *)&data) = uint(value.toUInt32());
|
---|
714 | type = callType;
|
---|
715 | } else if (callType == QMetaType::Bool) {
|
---|
716 | *((bool *)&data) = value.toBool();
|
---|
717 | type = callType;
|
---|
718 | } else if (callType == QMetaType::Double) {
|
---|
719 | *((double *)&data) = double(value.toNumber());
|
---|
720 | type = callType;
|
---|
721 | } else if (callType == QMetaType::Float) {
|
---|
722 | *((float *)&data) = float(value.toNumber());
|
---|
723 | type = callType;
|
---|
724 | } else if (callType == QMetaType::QString) {
|
---|
725 | if (value.isNull() || value.isUndefined())
|
---|
726 | new (&data) QString();
|
---|
727 | else
|
---|
728 | new (&data) QString(value.toString());
|
---|
729 | type = callType;
|
---|
730 | } else if (callType == QMetaType::QObjectStar) {
|
---|
731 | *((QObject **)&data) = value.toQObject();
|
---|
732 | type = callType;
|
---|
733 | } else if (callType == qMetaTypeId<QVariant>()) {
|
---|
734 | new (&data) QVariant(QDeclarativeEnginePrivate::get(engine)->scriptValueToVariant(value));
|
---|
735 | type = callType;
|
---|
736 | } else if (callType == qMetaTypeId<QList<QObject*> >()) {
|
---|
737 | QList<QObject *> *list = new (&data) QList<QObject *>();
|
---|
738 | if (value.isArray()) {
|
---|
739 | int length = value.property(QLatin1String("length")).toInt32();
|
---|
740 | for (int ii = 0; ii < length; ++ii) {
|
---|
741 | QScriptValue arrayItem = value.property(ii);
|
---|
742 | QObject *d = arrayItem.toQObject();
|
---|
743 | list->append(d);
|
---|
744 | }
|
---|
745 | } else if (QObject *d = value.toQObject()) {
|
---|
746 | list->append(d);
|
---|
747 | }
|
---|
748 | type = callType;
|
---|
749 | } else {
|
---|
750 | new (&data) QVariant();
|
---|
751 | type = -1;
|
---|
752 |
|
---|
753 | QDeclarativeEnginePrivate *priv = QDeclarativeEnginePrivate::get(engine);
|
---|
754 | QVariant v = priv->scriptValueToVariant(value);
|
---|
755 | if (v.userType() == callType) {
|
---|
756 | *((QVariant *)&data) = v;
|
---|
757 | } else if (v.canConvert((QVariant::Type)callType)) {
|
---|
758 | *((QVariant *)&data) = v;
|
---|
759 | ((QVariant *)&data)->convert((QVariant::Type)callType);
|
---|
760 | } else if (const QMetaObject *mo = priv->rawMetaObjectForType(callType)) {
|
---|
761 | QObject *obj = priv->toQObject(v);
|
---|
762 |
|
---|
763 | if (obj) {
|
---|
764 | const QMetaObject *objMo = obj->metaObject();
|
---|
765 | while (objMo && objMo != mo) objMo = objMo->superClass();
|
---|
766 | if (!objMo) obj = 0;
|
---|
767 | }
|
---|
768 |
|
---|
769 | *((QVariant *)&data) = QVariant(callType, &obj);
|
---|
770 | } else {
|
---|
771 | *((QVariant *)&data) = QVariant(callType, (void *)0);
|
---|
772 | }
|
---|
773 | }
|
---|
774 | }
|
---|
775 |
|
---|
776 | QScriptDeclarativeClass::Value MetaCallArgument::toValue(QDeclarativeEngine *e)
|
---|
777 | {
|
---|
778 | QScriptEngine *engine = QDeclarativeEnginePrivate::getScriptEngine(e);
|
---|
779 |
|
---|
780 | if (type == qMetaTypeId<QScriptValue>()) {
|
---|
781 | return QScriptDeclarativeClass::Value(engine, *((QScriptValue *)&data));
|
---|
782 | } else if (type == QMetaType::Int) {
|
---|
783 | return QScriptDeclarativeClass::Value(engine, *((int *)&data));
|
---|
784 | } else if (type == QMetaType::UInt) {
|
---|
785 | return QScriptDeclarativeClass::Value(engine, *((uint *)&data));
|
---|
786 | } else if (type == QMetaType::Bool) {
|
---|
787 | return QScriptDeclarativeClass::Value(engine, *((bool *)&data));
|
---|
788 | } else if (type == QMetaType::Double) {
|
---|
789 | return QScriptDeclarativeClass::Value(engine, *((double *)&data));
|
---|
790 | } else if (type == QMetaType::Float) {
|
---|
791 | return QScriptDeclarativeClass::Value(engine, *((float *)&data));
|
---|
792 | } else if (type == QMetaType::QString) {
|
---|
793 | return QScriptDeclarativeClass::Value(engine, *((QString *)&data));
|
---|
794 | } else if (type == QMetaType::QObjectStar) {
|
---|
795 | QObject *object = *((QObject **)&data);
|
---|
796 | if (object)
|
---|
797 | QDeclarativeData::get(object, true)->setImplicitDestructible();
|
---|
798 | QDeclarativeEnginePrivate *priv = QDeclarativeEnginePrivate::get(e);
|
---|
799 | return QScriptDeclarativeClass::Value(engine, priv->objectClass->newQObject(object));
|
---|
800 | } else if (type == qMetaTypeId<QList<QObject *> >()) {
|
---|
801 | QList<QObject *> &list = *(QList<QObject *>*)&data;
|
---|
802 | QScriptValue rv = engine->newArray(list.count());
|
---|
803 | QDeclarativeEnginePrivate *priv = QDeclarativeEnginePrivate::get(e);
|
---|
804 | for (int ii = 0; ii < list.count(); ++ii) {
|
---|
805 | QObject *object = list.at(ii);
|
---|
806 | QDeclarativeData::get(object, true)->setImplicitDestructible();
|
---|
807 | rv.setProperty(ii, priv->objectClass->newQObject(object));
|
---|
808 | }
|
---|
809 | return QScriptDeclarativeClass::Value(engine, rv);
|
---|
810 | } else if (type == -1 || type == qMetaTypeId<QVariant>()) {
|
---|
811 | QDeclarativeEnginePrivate *ep = QDeclarativeEnginePrivate::get(e);
|
---|
812 | QScriptValue rv = ep->scriptValueFromVariant(*((QVariant *)&data));
|
---|
813 | if (rv.isQObject()) {
|
---|
814 | QObject *object = rv.toQObject();
|
---|
815 | if (object)
|
---|
816 | QDeclarativeData::get(object, true)->setImplicitDestructible();
|
---|
817 | }
|
---|
818 | return QScriptDeclarativeClass::Value(engine, rv);
|
---|
819 | } else {
|
---|
820 | return QScriptDeclarativeClass::Value();
|
---|
821 | }
|
---|
822 | }
|
---|
823 |
|
---|
824 | int QDeclarativeObjectMethodScriptClass::enumType(const QMetaObject *meta, const QString &strname)
|
---|
825 | {
|
---|
826 | QByteArray str = strname.toUtf8();
|
---|
827 | QByteArray scope;
|
---|
828 | QByteArray name;
|
---|
829 | int scopeIdx = str.lastIndexOf("::");
|
---|
830 | if (scopeIdx != -1) {
|
---|
831 | scope = str.left(scopeIdx);
|
---|
832 | name = str.mid(scopeIdx + 2);
|
---|
833 | } else {
|
---|
834 | name = str;
|
---|
835 | }
|
---|
836 | for (int i = meta->enumeratorCount() - 1; i >= 0; --i) {
|
---|
837 | QMetaEnum m = meta->enumerator(i);
|
---|
838 | if ((m.name() == name) && (scope.isEmpty() || (m.scope() == scope)))
|
---|
839 | return QVariant::Int;
|
---|
840 | }
|
---|
841 | return QVariant::Invalid;
|
---|
842 | }
|
---|
843 |
|
---|
844 | QDeclarativeObjectMethodScriptClass::Value QDeclarativeObjectMethodScriptClass::call(Object *o, QScriptContext *ctxt)
|
---|
845 | {
|
---|
846 | MethodData *method = static_cast<MethodData *>(o);
|
---|
847 |
|
---|
848 | if (method->data.relatedIndex == -1)
|
---|
849 | return callPrecise(method->object, method->data, ctxt);
|
---|
850 | else
|
---|
851 | return callOverloaded(method, ctxt);
|
---|
852 | }
|
---|
853 |
|
---|
854 | QDeclarativeObjectMethodScriptClass::Value
|
---|
855 | QDeclarativeObjectMethodScriptClass::callPrecise(QObject *object, const QDeclarativePropertyCache::Data &data,
|
---|
856 | QScriptContext *ctxt)
|
---|
857 | {
|
---|
858 | if (data.flags & QDeclarativePropertyCache::Data::HasArguments) {
|
---|
859 |
|
---|
860 | QMetaMethod m = object->metaObject()->method(data.coreIndex);
|
---|
861 | QList<QByteArray> argTypeNames = m.parameterTypes();
|
---|
862 | QVarLengthArray<int, 9> argTypes(argTypeNames.count());
|
---|
863 |
|
---|
864 | // ### Cache
|
---|
865 | for (int ii = 0; ii < argTypeNames.count(); ++ii) {
|
---|
866 | argTypes[ii] = QMetaType::type(argTypeNames.at(ii));
|
---|
867 | if (argTypes[ii] == QVariant::Invalid)
|
---|
868 | argTypes[ii] = enumType(object->metaObject(), QString::fromLatin1(argTypeNames.at(ii)));
|
---|
869 | if (argTypes[ii] == QVariant::Invalid)
|
---|
870 | return Value(ctxt, ctxt->throwError(QString::fromLatin1("Unknown method parameter type: %1").arg(QLatin1String(argTypeNames.at(ii)))));
|
---|
871 | }
|
---|
872 |
|
---|
873 | if (argTypes.count() > ctxt->argumentCount())
|
---|
874 | return Value(ctxt, ctxt->throwError(QLatin1String("Insufficient arguments")));
|
---|
875 |
|
---|
876 | return callMethod(object, data.coreIndex, data.propType, argTypes.count(), argTypes.data(), ctxt);
|
---|
877 |
|
---|
878 | } else {
|
---|
879 |
|
---|
880 | return callMethod(object, data.coreIndex, data.propType, 0, 0, ctxt);
|
---|
881 |
|
---|
882 | }
|
---|
883 | }
|
---|
884 |
|
---|
885 | QDeclarativeObjectMethodScriptClass::Value
|
---|
886 | QDeclarativeObjectMethodScriptClass::callMethod(QObject *object, int index,
|
---|
887 | int returnType, int argCount, int *argTypes,
|
---|
888 | QScriptContext *ctxt)
|
---|
889 | {
|
---|
890 | if (argCount > 0) {
|
---|
891 |
|
---|
892 | QVarLengthArray<MetaCallArgument, 9> args(argCount + 1);
|
---|
893 | args[0].initAsType(returnType, engine);
|
---|
894 |
|
---|
895 | for (int ii = 0; ii < argCount; ++ii)
|
---|
896 | args[ii + 1].fromScriptValue(argTypes[ii], engine, ctxt->argument(ii));
|
---|
897 |
|
---|
898 | QVarLengthArray<void *, 9> argData(args.count());
|
---|
899 | for (int ii = 0; ii < args.count(); ++ii)
|
---|
900 | argData[ii] = args[ii].dataPtr();
|
---|
901 |
|
---|
902 | QMetaObject::metacall(object, QMetaObject::InvokeMetaMethod, index, argData.data());
|
---|
903 |
|
---|
904 | return args[0].toValue(engine);
|
---|
905 |
|
---|
906 | } else if (returnType != 0) {
|
---|
907 |
|
---|
908 | MetaCallArgument arg;
|
---|
909 | arg.initAsType(returnType, engine);
|
---|
910 |
|
---|
911 | void *args[] = { arg.dataPtr() };
|
---|
912 |
|
---|
913 | QMetaObject::metacall(object, QMetaObject::InvokeMetaMethod, index, args);
|
---|
914 |
|
---|
915 | return arg.toValue(engine);
|
---|
916 |
|
---|
917 | } else {
|
---|
918 |
|
---|
919 | void *args[] = { 0 };
|
---|
920 | QMetaObject::metacall(object, QMetaObject::InvokeMetaMethod, index, args);
|
---|
921 | return Value();
|
---|
922 |
|
---|
923 | }
|
---|
924 | }
|
---|
925 |
|
---|
926 | /*!
|
---|
927 | Resolve the overloaded method to call. The algorithm works conceptually like this:
|
---|
928 | 1. Resolve the set of overloads it is *possible* to call.
|
---|
929 | Impossible overloads include those that have too many parameters or have parameters
|
---|
930 | of unknown type.
|
---|
931 | 2. Filter the set of overloads to only contain those with the closest number of
|
---|
932 | parameters.
|
---|
933 | For example, if we are called with 3 parameters and there are 2 overloads that
|
---|
934 | take 2 parameters and one that takes 3, eliminate the 2 parameter overloads.
|
---|
935 | 3. Find the best remaining overload based on its match score.
|
---|
936 | If two or more overloads have the same match score, call the last one. The match
|
---|
937 | score is constructed by adding the matchScore() result for each of the parameters.
|
---|
938 | */
|
---|
939 | QDeclarativeObjectMethodScriptClass::Value
|
---|
940 | QDeclarativeObjectMethodScriptClass::callOverloaded(MethodData *method, QScriptContext *ctxt)
|
---|
941 | {
|
---|
942 | int argumentCount = ctxt->argumentCount();
|
---|
943 |
|
---|
944 | QDeclarativePropertyCache::Data *best = 0;
|
---|
945 | int bestParameterScore = INT_MAX;
|
---|
946 | int bestMatchScore = INT_MAX;
|
---|
947 |
|
---|
948 | QDeclarativePropertyCache::Data dummy;
|
---|
949 | QDeclarativePropertyCache::Data *attempt = &method->data;
|
---|
950 |
|
---|
951 | do {
|
---|
952 | QList<QByteArray> methodArgTypeNames;
|
---|
953 |
|
---|
954 | if (attempt->flags & QDeclarativePropertyCache::Data::HasArguments)
|
---|
955 | methodArgTypeNames = method->object->metaObject()->method(attempt->coreIndex).parameterTypes();
|
---|
956 |
|
---|
957 | int methodArgumentCount = methodArgTypeNames.count();
|
---|
958 |
|
---|
959 | if (methodArgumentCount > argumentCount)
|
---|
960 | continue; // We don't have sufficient arguments to call this method
|
---|
961 |
|
---|
962 | int methodParameterScore = argumentCount - methodArgumentCount;
|
---|
963 | if (methodParameterScore > bestParameterScore)
|
---|
964 | continue; // We already have a better option
|
---|
965 |
|
---|
966 | int methodMatchScore = 0;
|
---|
967 | QVarLengthArray<int, 9> methodArgTypes(methodArgumentCount);
|
---|
968 |
|
---|
969 | bool unknownArgument = false;
|
---|
970 | for (int ii = 0; ii < methodArgumentCount; ++ii) {
|
---|
971 | methodArgTypes[ii] = QMetaType::type(methodArgTypeNames.at(ii));
|
---|
972 | if (methodArgTypes[ii] == QVariant::Invalid)
|
---|
973 | methodArgTypes[ii] = enumType(method->object->metaObject(),
|
---|
974 | QString::fromLatin1(methodArgTypeNames.at(ii)));
|
---|
975 | if (methodArgTypes[ii] == QVariant::Invalid) {
|
---|
976 | unknownArgument = true;
|
---|
977 | break;
|
---|
978 | }
|
---|
979 | methodMatchScore += matchScore(ctxt->argument(ii), methodArgTypes[ii], methodArgTypeNames.at(ii));
|
---|
980 | }
|
---|
981 | if (unknownArgument)
|
---|
982 | continue; // We don't understand all the parameters
|
---|
983 |
|
---|
984 | if (bestParameterScore > methodParameterScore || bestMatchScore > methodMatchScore) {
|
---|
985 | best = attempt;
|
---|
986 | bestParameterScore = methodParameterScore;
|
---|
987 | bestMatchScore = methodMatchScore;
|
---|
988 | }
|
---|
989 |
|
---|
990 | if (bestParameterScore == 0 && bestMatchScore == 0)
|
---|
991 | break; // We can't get better than that
|
---|
992 |
|
---|
993 | } while((attempt = relatedMethod(method->object, attempt, dummy)) != 0);
|
---|
994 |
|
---|
995 | if (best) {
|
---|
996 | return callPrecise(method->object, *best, ctxt);
|
---|
997 | } else {
|
---|
998 | QString error = QLatin1String("Unable to determine callable overload. Candidates are:");
|
---|
999 | QDeclarativePropertyCache::Data *candidate = &method->data;
|
---|
1000 | while (candidate) {
|
---|
1001 | error += QLatin1String("\n ") + QString::fromUtf8(method->object->metaObject()->method(candidate->coreIndex).signature());
|
---|
1002 | candidate = relatedMethod(method->object, candidate, dummy);
|
---|
1003 | }
|
---|
1004 | return Value(ctxt, ctxt->throwError(error));
|
---|
1005 | }
|
---|
1006 | }
|
---|
1007 |
|
---|
1008 | /*!
|
---|
1009 | Returns the match score for converting \a actual to be of type \a conversionType. A
|
---|
1010 | zero score means "perfect match" whereas a higher score is worse.
|
---|
1011 |
|
---|
1012 | The conversion table is copied out of the QtScript callQtMethod() function.
|
---|
1013 | */
|
---|
1014 | int QDeclarativeObjectMethodScriptClass::matchScore(const QScriptValue &actual, int conversionType,
|
---|
1015 | const QByteArray &conversionTypeName)
|
---|
1016 | {
|
---|
1017 | if (actual.isNumber()) {
|
---|
1018 | switch (conversionType) {
|
---|
1019 | case QMetaType::Double:
|
---|
1020 | return 0;
|
---|
1021 | case QMetaType::Float:
|
---|
1022 | return 1;
|
---|
1023 | case QMetaType::LongLong:
|
---|
1024 | case QMetaType::ULongLong:
|
---|
1025 | return 2;
|
---|
1026 | case QMetaType::Long:
|
---|
1027 | case QMetaType::ULong:
|
---|
1028 | return 3;
|
---|
1029 | case QMetaType::Int:
|
---|
1030 | case QMetaType::UInt:
|
---|
1031 | return 4;
|
---|
1032 | case QMetaType::Short:
|
---|
1033 | case QMetaType::UShort:
|
---|
1034 | return 5;
|
---|
1035 | break;
|
---|
1036 | case QMetaType::Char:
|
---|
1037 | case QMetaType::UChar:
|
---|
1038 | return 6;
|
---|
1039 | default:
|
---|
1040 | return 10;
|
---|
1041 | }
|
---|
1042 | } else if (actual.isString()) {
|
---|
1043 | switch (conversionType) {
|
---|
1044 | case QMetaType::QString:
|
---|
1045 | return 0;
|
---|
1046 | default:
|
---|
1047 | return 10;
|
---|
1048 | }
|
---|
1049 | } else if (actual.isBoolean()) {
|
---|
1050 | switch (conversionType) {
|
---|
1051 | case QMetaType::Bool:
|
---|
1052 | return 0;
|
---|
1053 | default:
|
---|
1054 | return 10;
|
---|
1055 | }
|
---|
1056 | } else if (actual.isDate()) {
|
---|
1057 | switch (conversionType) {
|
---|
1058 | case QMetaType::QDateTime:
|
---|
1059 | return 0;
|
---|
1060 | case QMetaType::QDate:
|
---|
1061 | return 1;
|
---|
1062 | case QMetaType::QTime:
|
---|
1063 | return 2;
|
---|
1064 | default:
|
---|
1065 | return 10;
|
---|
1066 | }
|
---|
1067 | } else if (actual.isRegExp()) {
|
---|
1068 | switch (conversionType) {
|
---|
1069 | case QMetaType::QRegExp:
|
---|
1070 | return 0;
|
---|
1071 | default:
|
---|
1072 | return 10;
|
---|
1073 | }
|
---|
1074 | } else if (actual.isVariant()) {
|
---|
1075 | if (conversionType == qMetaTypeId<QVariant>())
|
---|
1076 | return 0;
|
---|
1077 | else if (actual.toVariant().userType() == conversionType)
|
---|
1078 | return 0;
|
---|
1079 | else
|
---|
1080 | return 10;
|
---|
1081 | } else if (actual.isArray()) {
|
---|
1082 | switch (conversionType) {
|
---|
1083 | case QMetaType::QStringList:
|
---|
1084 | case QMetaType::QVariantList:
|
---|
1085 | return 5;
|
---|
1086 | default:
|
---|
1087 | return 10;
|
---|
1088 | }
|
---|
1089 | } else if (actual.isQObject()) {
|
---|
1090 | switch (conversionType) {
|
---|
1091 | case QMetaType::QObjectStar:
|
---|
1092 | return 0;
|
---|
1093 | default:
|
---|
1094 | return 10;
|
---|
1095 | }
|
---|
1096 | } else if (actual.isNull()) {
|
---|
1097 | switch (conversionType) {
|
---|
1098 | case QMetaType::VoidStar:
|
---|
1099 | case QMetaType::QObjectStar:
|
---|
1100 | return 0;
|
---|
1101 | default:
|
---|
1102 | if (!conversionTypeName.endsWith('*'))
|
---|
1103 | return 10;
|
---|
1104 | else
|
---|
1105 | return 0;
|
---|
1106 | }
|
---|
1107 | } else {
|
---|
1108 | return 10;
|
---|
1109 | }
|
---|
1110 | }
|
---|
1111 |
|
---|
1112 | static inline int QMetaObject_methods(const QMetaObject *metaObject)
|
---|
1113 | {
|
---|
1114 | struct Private
|
---|
1115 | {
|
---|
1116 | int revision;
|
---|
1117 | int className;
|
---|
1118 | int classInfoCount, classInfoData;
|
---|
1119 | int methodCount, methodData;
|
---|
1120 | };
|
---|
1121 |
|
---|
1122 | return reinterpret_cast<const Private *>(metaObject->d.data)->methodCount;
|
---|
1123 | }
|
---|
1124 |
|
---|
1125 | static QByteArray QMetaMethod_name(const QMetaMethod &m)
|
---|
1126 | {
|
---|
1127 | QByteArray sig = m.signature();
|
---|
1128 | int paren = sig.indexOf('(');
|
---|
1129 | if (paren == -1)
|
---|
1130 | return sig;
|
---|
1131 | else
|
---|
1132 | return sig.left(paren);
|
---|
1133 | }
|
---|
1134 |
|
---|
1135 | /*!
|
---|
1136 | Returns the next related method, if one, or 0.
|
---|
1137 | */
|
---|
1138 | QDeclarativePropertyCache::Data *
|
---|
1139 | QDeclarativeObjectMethodScriptClass::relatedMethod(QObject *object, QDeclarativePropertyCache::Data *current,
|
---|
1140 | QDeclarativePropertyCache::Data &dummy)
|
---|
1141 | {
|
---|
1142 | QDeclarativePropertyCache *cache = QDeclarativeData::get(object)->propertyCache;
|
---|
1143 | if (current->relatedIndex == -1)
|
---|
1144 | return 0;
|
---|
1145 |
|
---|
1146 | if (cache) {
|
---|
1147 | return cache->method(current->relatedIndex);
|
---|
1148 | } else {
|
---|
1149 | const QMetaObject *mo = object->metaObject();
|
---|
1150 | int methodOffset = mo->methodCount() - QMetaObject_methods(mo);
|
---|
1151 |
|
---|
1152 | while (methodOffset > current->relatedIndex) {
|
---|
1153 | mo = mo->superClass();
|
---|
1154 | methodOffset -= QMetaObject_methods(mo);
|
---|
1155 | }
|
---|
1156 |
|
---|
1157 | QMetaMethod method = mo->method(current->relatedIndex);
|
---|
1158 | dummy.load(method);
|
---|
1159 |
|
---|
1160 | // Look for overloaded methods
|
---|
1161 | QByteArray methodName = QMetaMethod_name(method);
|
---|
1162 | for (int ii = current->relatedIndex - 1; ii >= methodOffset; --ii) {
|
---|
1163 | if (methodName == QMetaMethod_name(mo->method(ii))) {
|
---|
1164 | dummy.relatedIndex = ii;
|
---|
1165 | return &dummy;
|
---|
1166 | }
|
---|
1167 | }
|
---|
1168 |
|
---|
1169 | return &dummy;
|
---|
1170 | }
|
---|
1171 | }
|
---|
1172 |
|
---|
1173 | QT_END_NAMESPACE
|
---|
1174 |
|
---|