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qqmlcustomparser.cpp

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1 /**************************************************************************** -

2 ** -

4 ** Contact: https://www.qt.io/licensing/ -

5 ** -

6 ** This file is part of the QtQml module of the Qt Toolkit. -

7 ** -

8 ** $QT_BEGIN_LICENSE:LGPL$ -

9 ** Commercial License Usage -

10 ** Licensees holding valid commercial Qt licenses may use this file in -

11 ** accordance with the commercial license agreement provided with the -

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15 ** information use the contact form at https://www.qt.io/contact-us. -

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17 ** GNU Lesser General Public License Usage -

18 ** Alternatively, this file may be used under the terms of the GNU Lesser -

19 ** General Public License version 3 as published by the Free Software -

20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the -

21 ** packaging of this file. Please review the following information to -

22 ** ensure the GNU Lesser General Public License version 3 requirements -

23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -

24 ** -

25 ** GNU General Public License Usage -

26 ** Alternatively, this file may be used under the terms of the GNU -

27 ** General Public License version 2.0 or (at your option) the GNU General -

28 ** Public license version 3 or any later version approved by the KDE Free -

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31 ** included in the packaging of this file. Please review the following -

32 ** information to ensure the GNU General Public License requirements will -

33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and -

34 ** https://www.gnu.org/licenses/gpl-3.0.html. -

35 ** -

36 ** $QT_END_LICENSE$ -

37 ** -

38 ****************************************************************************/ -

39 -

40 #include "qqmlcustomparser_p.h" -

41 -

42 #include <private/qqmltypecompiler_p.h> -

43 -

44 #include <QtCore/qdebug.h> -

45 -

46 QT_BEGIN_NAMESPACE -

47 -

48 /*! -

49 \class QQmlCustomParser -

50 \brief The QQmlCustomParser class allows you to add new arbitrary types to QML. -

51 \internal -

52 -

53 By subclassing QQmlCustomParser, you can add a parser for -

54 building a particular type. -

55 -

56 The subclass must implement compile() and setCustomData(), and register -

57 itself in the meta type system by calling the macro: -

58 -

59 \code -

60 QML_REGISTER_CUSTOM_TYPE(Module, MajorVersion, MinorVersion, Name, TypeClass, ParserClass) -

61 \endcode -

62 */ -

63 -

64 /* -

65 \fn QByteArray QQmlCustomParser::compile(const QList<QQmlCustomParserProperty> & properties) -

66 -

67 The custom parser processes \a properties, and returns -

68 a QByteArray containing data meaningful only to the -

69 custom parser; the type engine will pass this same data to -

70 setCustomData() when making an instance of the data. -

71 -

72 Errors must be reported via the error() functions. -

73 -

74 The QByteArray may be cached between executions of the system, so -

75 it must contain correctly-serialized data (not, for example, -

76 pointers to stack objects). -

77 */ -

78 -

79 /* -

80 \fn void QQmlCustomParser::setCustomData(QObject *object, const QByteArray &data) -

81 -

82 This function sets \a object to have the properties defined -

83 by \a data, which is a block of data previously returned by a call -

84 to compile(). -

85 -

86 Errors should be reported using qmlWarning(object). -

87 -

88 The \a object will be an instance of the TypeClass specified by QML_REGISTER_CUSTOM_TYPE. -

89 */ -

90 -

91 void QQmlCustomParser::clearErrors() -

92 { -

93 exceptions.clear(); -

}

executed 926 times by 30 tests: end of block

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlapplicationengine
tst_qqmlbinding
tst_qqmlconnections
tst_qqmlecmascript
tst_qqmlenginecleanup
tst_qqmlenginedebugservice
tst_qqmllistmodel
tst_qqmlnotifier
tst_qqmlproperty
tst_qqmltranslation
tst_qqmlvaluetypes
tst_qquickanimations
tst_qquickapplication
tst_qquickbehaviors
tst_qquickdesignersupport
tst_qquickflipable
tst_qquickfontloader
tst_qquickgridview
tst_qquickimage
tst_qquickitem2
tst_qquicklistview
tst_qquickmousearea
tst_qquickpathview
...

926

95 -

96 /*! -

97 Reports an error with the given \a description. -

98 -

99 An error is generated referring to the \a location in the source file. -

100 */ -

101 void QQmlCustomParser::error(const QV4::CompiledData::Location &location, const QString &description) -

102 { -

103 exceptions << QQmlCompileError(location, description); -

104

}

executed 28 times by 3 tests: end of block

Executed by:

tst_qqmlconnections
tst_qqmllistmodel
tst_qquickstates

105 -

106 struct StaticQtMetaObject : public QObject -

107 { -

108 static const QMetaObject *get() -

109

{ return &staticQtMetaObject; }

executed 4 times by 1 test: return &staticQtMetaObject;

Executed by:

tst_qqmllistmodel

110 }; -

111 -

112 /*! -

113 If \a script is a simple enumeration expression (eg. Text.AlignLeft), -

114 returns the integer equivalent (eg. 1), and sets \a ok to true. -

115 -

116 Otherwise sets \a ok to false. -

117 -

118 A valid \a ok must be provided, or the function will assert. -

119 */ -

120 int QQmlCustomParser::evaluateEnum(const QByteArray& script, bool *ok) const -

121 { -

122 Q_ASSERT_X(ok, "QQmlCustomParser::evaluateEnum", "ok must not be a null pointer"); -

123 *ok = false; -

124 -

125 // we support one or two '.' in the enum phrase: -

126 // * <TypeName>.<EnumValue> -

127 // * <TypeName>.<ScopedEnumName>.<EnumValue> -

128 -

129 int dot = script.indexOf('.'); -

130

if (dot == -1 || dot == script.length()-1)

dot == -1	Description
TRUE	evaluated 6 times by 1 test Evaluated by: tst_qqmllistmodel
FALSE	evaluated 182 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel

dot == script.length()-1	Description
TRUE	never evaluated
FALSE	evaluated 182 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel

0-182

131

return -1;

executed 6 times by 1 test: return -1;

Executed by:

tst_qqmllistmodel

132 -

133 QString scope = QString::fromUtf8(script.left(dot)); -

134 -

135

if (scope != QLatin1String("Qt")) {

scope != QLatin1String("Qt")	Description
TRUE	evaluated 178 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel
FALSE	evaluated 4 times by 1 test Evaluated by: tst_qqmllistmodel

4-178

136

if (imports.isNull())

imports.isNull()	Description
TRUE	never evaluated
FALSE	evaluated 178 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel

0-178

137

return -1;

never executed: return -1;

138 QQmlType type; -

139 -

140

if (imports.isT1()) {

imports.isT1()	Description
TRUE	evaluated 90 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel
FALSE	evaluated 88 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel

88-90

141 imports.asT1()->resolveType(scope, &type, nullptr, nullptr, nullptr); -

142

} else {

executed 90 times by 2 tests: end of block

Executed by:

tst_examples
tst_qqmllistmodel

143 QQmlTypeNameCache::Result result = imports.asT2()->query(scope); -

144

if (result.isValid())

result.isValid()	Description
TRUE	evaluated 88 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel
FALSE	never evaluated

0-88

145

type = result.type;

executed 88 times by 2 tests: type = result.type;

Executed by:

tst_examples
tst_qqmllistmodel

146

}

executed 88 times by 2 tests: end of block

Executed by:

tst_examples
tst_qqmllistmodel

147 -

148

if (!type.isValid())

!type.isValid()	Description
TRUE	evaluated 2 times by 1 test Evaluated by: tst_qqmllistmodel
FALSE	evaluated 176 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel

2-176

149

return -1;

executed 2 times by 1 test: return -1;

Executed by:

tst_qqmllistmodel

150 -

151 int dot2 = script.indexOf('.', dot+1); -

152

const bool dot2Valid = dot2 != -1 && dot2 != script.length()-1;

dot2 != -1	Description
TRUE	never evaluated
FALSE	evaluated 176 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel

dot2 != script.length()-1	Description
TRUE	never evaluated
FALSE	never evaluated

0-176

153 QByteArray enumValue = script.mid(dot2Valid ? dot2 + 1 : dot + 1); -

154

QByteArray scopedEnumName = (dot2Valid ? script.mid(dot + 1, dot2 - dot - 1) : QByteArray());

dot2Valid	Description
TRUE	never evaluated
FALSE	evaluated 176 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel

0-176

155

if (!scopedEnumName.isEmpty())

!scopedEnumName.isEmpty()	Description
TRUE	never evaluated
FALSE	evaluated 176 times by 2 tests Evaluated by: tst_examples tst_qqmllistmodel

0-176

156

return type.scopedEnumValue(engine, scopedEnumName, enumValue, ok);

never executed: return type.scopedEnumValue(engine, scopedEnumName, enumValue, ok);

157 else -

158

return type.enumValue(engine, QHashedCStringRef(enumValue.constData(), enumValue.length()), ok);

executed 176 times by 2 tests: return type.enumValue(engine, QHashedCStringRef(enumValue.constData(), enumValue.length()), ok);

Executed by:

tst_examples
tst_qqmllistmodel

176

159 } -

160 -

161 QByteArray enumValue = script.mid(dot + 1); -

162 const QMetaObject *mo = StaticQtMetaObject::get(); -

163 int i = mo->enumeratorCount(); -

164

while (i--) {

i--	Description
TRUE	evaluated 296 times by 1 test Evaluated by: tst_qqmllistmodel
FALSE	never evaluated

0-296

165 int v = mo->enumerator(i).keyToValue(enumValue.constData(), ok); -

166

if (*ok)

*ok	Description
TRUE	evaluated 4 times by 1 test Evaluated by: tst_qqmllistmodel
FALSE	evaluated 292 times by 1 test Evaluated by: tst_qqmllistmodel

4-292

167

return v;

executed 4 times by 1 test: return v;

Executed by:

tst_qqmllistmodel

168

}

executed 292 times by 1 test: end of block

Executed by:

tst_qqmllistmodel

292

169

return -1;

never executed: return -1;

170 } -

171 -

172 /*! -

173 Resolves \a name to a type, or 0 if it is not a type. This can be used -

174 to type-check object nodes. -

175 */ -

176 const QMetaObject *QQmlCustomParser::resolveType(const QString& name) const -

177 { -

178

if (!imports.isT1())

!imports.isT1()	Description
TRUE	never evaluated
FALSE	evaluated 388 times by 14 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmlenginecleanup tst_qqmllistmodel tst_qqmltranslation tst_qquickgridview tst_qquickimage tst_qquicklistview tst_qquickpathview tst_qquickrepeater tst_qquickspringanimation tst_qquickvisualdatamodel tst_qtqmlmodules

0-388

179

return nullptr;

never executed: return nullptr;

180 QQmlType qmltype; -

181

if (!imports.asT1()->resolveType(name, &qmltype, nullptr, nullptr, nullptr))

!imports.asT1(...lptr, nullptr)	Description
TRUE	never evaluated
FALSE	evaluated 388 times by 14 tests Evaluated by: tst_examples tst_qmlcachegen tst_qqmlecmascript tst_qqmlenginecleanup tst_qqmllistmodel tst_qqmltranslation tst_qquickgridview tst_qquickimage tst_qquicklistview tst_qquickpathview tst_qquickrepeater tst_qquickspringanimation tst_qquickvisualdatamodel tst_qtqmlmodules

0-388

182

return nullptr;

never executed: return nullptr;

183

return qmltype.metaObject();

executed 388 times by 14 tests: return qmltype.metaObject();

Executed by:

tst_examples
tst_qmlcachegen
tst_qqmlecmascript
tst_qqmlenginecleanup
tst_qqmllistmodel
tst_qqmltranslation
tst_qquickgridview
tst_qquickimage
tst_qquicklistview
tst_qquickpathview
tst_qquickrepeater
tst_qquickspringanimation
tst_qquickvisualdatamodel
tst_qtqmlmodules

388

184 } -

185 -

186 QT_END_NAMESPACE -

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