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309 lines
9.1 KiB
C++
309 lines
9.1 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Copyright (C) 2016-2020 Ivailo Monev
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**
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** This file is part of the QtDeclarative module of the Katie Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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**
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qdeclarativecustomparser_p.h"
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#include "qdeclarativecustomparser_p_p.h"
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#include "qdeclarativeparser_p.h"
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#include "qdeclarativecompiler_p.h"
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#include <QtCore/qdebug.h>
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QT_BEGIN_NAMESPACE
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using namespace QDeclarativeParser;
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/*!
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\class QDeclarativeCustomParser
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\brief The QDeclarativeCustomParser class allows you to add new arbitrary types to QML.
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\internal
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By subclassing QDeclarativeCustomParser, you can add a parser for
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building a particular type.
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The subclass must implement compile() and setCustomData(), and register
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itself in the meta type system by calling the macro:
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\code
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QML_REGISTER_CUSTOM_TYPE(Module, MajorVersion, MinorVersion, Name, TypeClass, ParserClass)
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\endcode
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*/
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/*
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\fn QByteArray QDeclarativeCustomParser::compile(const QList<QDeclarativeCustomParserProperty> & properties)
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The custom parser processes \a properties, and returns
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a QByteArray containing data meaningful only to the
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custom parser; the type engine will pass this same data to
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setCustomData() when making an instance of the data.
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Errors must be reported via the error() functions.
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The QByteArray may be cached between executions of the system, so
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it must contain correctly-serialized data (not, for example,
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pointers to stack objects).
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*/
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/*
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\fn void QDeclarativeCustomParser::setCustomData(QObject *object, const QByteArray &data)
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This function sets \a object to have the properties defined
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by \a data, which is a block of data previously returned by a call
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to compile().
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Errors should be reported using qmlInfo(object).
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The \a object will be an instance of the TypeClass specified by QML_REGISTER_CUSTOM_TYPE.
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*/
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QDeclarativeCustomParserNode
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QDeclarativeCustomParserNodePrivate::fromObject(QDeclarativeParser::Object *root)
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{
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QDeclarativeCustomParserNode rootNode;
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rootNode.d->name = root->typeName;
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rootNode.d->location = root->location.start;
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for(QHash<QByteArray, Property *>::Iterator iter = root->properties.begin();
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iter != root->properties.end();
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++iter) {
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Property *p = *iter;
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rootNode.d->properties << fromProperty(p);
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}
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if (root->defaultProperty)
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rootNode.d->properties << fromProperty(root->defaultProperty);
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return rootNode;
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}
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QDeclarativeCustomParserProperty
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QDeclarativeCustomParserNodePrivate::fromProperty(QDeclarativeParser::Property *p)
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{
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QDeclarativeCustomParserProperty prop;
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prop.d->name = p->name;
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prop.d->isList = (p->values.count() > 1);
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prop.d->location = p->location.start;
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if (p->value) {
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QDeclarativeCustomParserNode node = fromObject(p->value);
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QList<QDeclarativeCustomParserProperty> props = node.properties();
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for (int ii = 0; ii < props.count(); ++ii)
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prop.d->values << QVariant::fromValue(props.at(ii));
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} else {
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for(int ii = 0; ii < p->values.count(); ++ii) {
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QDeclarativeParser::Value *v = p->values.at(ii);
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v->type = QDeclarativeParser::Value::Literal;
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if(v->object) {
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QDeclarativeCustomParserNode node = fromObject(v->object);
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prop.d->values << QVariant::fromValue(node);
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} else {
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prop.d->values << QVariant::fromValue(v->value);
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}
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}
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}
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return prop;
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}
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QDeclarativeCustomParserNode::QDeclarativeCustomParserNode()
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: d(new QDeclarativeCustomParserNodePrivate)
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{
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}
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QDeclarativeCustomParserNode::QDeclarativeCustomParserNode(const QDeclarativeCustomParserNode &other)
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: d(new QDeclarativeCustomParserNodePrivate)
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{
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*this = other;
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}
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QDeclarativeCustomParserNode &QDeclarativeCustomParserNode::operator=(const QDeclarativeCustomParserNode &other)
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{
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d->name = other.d->name;
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d->properties = other.d->properties;
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d->location = other.d->location;
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return *this;
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}
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QDeclarativeCustomParserNode::~QDeclarativeCustomParserNode()
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{
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delete d; d = 0;
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}
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QByteArray QDeclarativeCustomParserNode::name() const
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{
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return d->name;
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}
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QList<QDeclarativeCustomParserProperty> QDeclarativeCustomParserNode::properties() const
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{
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return d->properties;
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}
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QDeclarativeParser::Location QDeclarativeCustomParserNode::location() const
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{
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return d->location;
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}
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QDeclarativeCustomParserProperty::QDeclarativeCustomParserProperty()
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: d(new QDeclarativeCustomParserPropertyPrivate)
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{
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}
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QDeclarativeCustomParserProperty::QDeclarativeCustomParserProperty(const QDeclarativeCustomParserProperty &other)
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: d(new QDeclarativeCustomParserPropertyPrivate)
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{
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*this = other;
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}
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QDeclarativeCustomParserProperty &QDeclarativeCustomParserProperty::operator=(const QDeclarativeCustomParserProperty &other)
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{
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d->name = other.d->name;
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d->isList = other.d->isList;
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d->values = other.d->values;
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d->location = other.d->location;
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return *this;
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}
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QDeclarativeCustomParserProperty::~QDeclarativeCustomParserProperty()
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{
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delete d; d = 0;
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}
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QByteArray QDeclarativeCustomParserProperty::name() const
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{
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return d->name;
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}
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bool QDeclarativeCustomParserProperty::isList() const
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{
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return d->isList;
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}
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QDeclarativeParser::Location QDeclarativeCustomParserProperty::location() const
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{
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return d->location;
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}
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QList<QVariant> QDeclarativeCustomParserProperty::assignedValues() const
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{
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return d->values;
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}
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void QDeclarativeCustomParser::clearErrors()
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{
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exceptions.clear();
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}
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/*!
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Reports an error with the given \a description.
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This can only be used during the compile() step. For errors during setCustomData(), use qmlInfo().
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An error is generated referring to the position of the element in the source file.
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*/
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void QDeclarativeCustomParser::error(const QString& description)
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{
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Q_ASSERT(object);
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QDeclarativeError error;
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QString exceptionDescription;
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error.setLine(object->location.start.line);
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error.setColumn(object->location.start.column);
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error.setDescription(description);
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exceptions << error;
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}
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/*!
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Reports an error in parsing \a prop, with the given \a description.
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An error is generated referring to the position of \a node in the source file.
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*/
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void QDeclarativeCustomParser::error(const QDeclarativeCustomParserProperty& prop, const QString& description)
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{
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QDeclarativeError error;
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QString exceptionDescription;
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error.setLine(prop.location().line);
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error.setColumn(prop.location().column);
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error.setDescription(description);
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exceptions << error;
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}
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/*!
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Reports an error in parsing \a node, with the given \a description.
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An error is generated referring to the position of \a node in the source file.
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*/
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void QDeclarativeCustomParser::error(const QDeclarativeCustomParserNode& node, const QString& description)
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{
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QDeclarativeError error;
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QString exceptionDescription;
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error.setLine(node.location().line);
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error.setColumn(node.location().column);
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error.setDescription(description);
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exceptions << error;
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}
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/*!
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If \a script is a simply enum expression (eg. Text.AlignLeft),
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returns the integer equivalent (eg. 1).
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Otherwise, returns -1.
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*/
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int QDeclarativeCustomParser::evaluateEnum(const QByteArray& script) const
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{
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return compiler->evaluateEnum(script);
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}
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/*!
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Resolves \a name to a type, or 0 if it is not a type. This can be used
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to type-check object nodes.
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*/
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const QMetaObject *QDeclarativeCustomParser::resolveType(const QByteArray& name) const
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{
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return compiler->resolveType(name);
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}
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/*!
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Rewrites \a expression and returns an identifier that can be
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used to construct the binding later. \a name
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is used as the name of the rewritten function.
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*/
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QDeclarativeBinding::Identifier QDeclarativeCustomParser::rewriteBinding(const QString& expression, const QByteArray& name)
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{
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return compiler->rewriteBinding(expression, name);
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}
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QT_END_NAMESPACE
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