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Diffstat (limited to 'src/qml/qml/v4vm/qv4objectiterator.cpp')
| -rw-r--r-- | src/qml/qml/v4vm/qv4objectiterator.cpp | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/qml/qml/v4vm/qv4objectiterator.cpp b/src/qml/qml/v4vm/qv4objectiterator.cpp new file mode 100644 index 0000000000..44ba9efcaa --- /dev/null +++ b/src/qml/qml/v4vm/qv4objectiterator.cpp @@ -0,0 +1,185 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the V4VM module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include "qv4objectiterator.h" +#include "qv4object.h" +#include "qv4stringobject.h" +#include "qv4identifier.h" + +namespace QQmlJS { +namespace VM { + +ObjectIterator::ObjectIterator(ExecutionContext *context, Object *o, uint flags) + : context(context) + , object(o) + , current(o) + , arrayNode(0) + , arrayIndex(0) + , memberIndex(0) + , flags(flags) +{ + if (current) { + if (current->asStringObject()) + this->flags |= CurrentIsString; + } +} + +Property *ObjectIterator::next(String **name, uint *index, PropertyAttributes *attrs) +{ + Property *p = 0; + *name = 0; + *index = UINT_MAX; + while (1) { + if (!current) + break; + + if (flags & CurrentIsString) { + StringObject *s = static_cast<StringObject *>(current); + uint slen = s->value.stringValue()->toQString().length(); + while (arrayIndex < slen) { + *index = arrayIndex; + ++arrayIndex; + if (attrs) + *attrs = s->arrayAttributes ? s->arrayAttributes[arrayIndex] : PropertyAttributes(Attr_NotWritable|Attr_NotConfigurable); + return s->__getOwnProperty__(*index); + } + flags &= ~CurrentIsString; + arrayNode = current->sparseArrayBegin(); + // iterate until we're past the end of the string + while (arrayNode && arrayNode->key() < slen) + arrayNode = arrayNode->nextNode(); + } + + if (!arrayIndex) + arrayNode = current->sparseArrayBegin(); + + // sparse arrays + if (arrayNode) { + while (arrayNode != current->sparseArrayEnd()) { + int k = arrayNode->key(); + uint pidx = arrayNode->value; + p = current->arrayData + pidx; + arrayNode = arrayNode->nextNode(); + PropertyAttributes a = current->arrayAttributes ? current->arrayAttributes[pidx] : PropertyAttributes(Attr_Data); + if (!(flags & EnumberableOnly) || a.isEnumerable()) { + arrayIndex = k + 1; + *index = k; + if (attrs) + *attrs = a; + return p; + } + } + arrayNode = 0; + arrayIndex = UINT_MAX; + } + // dense arrays + while (arrayIndex < current->arrayDataLen) { + uint pidx = current->propertyIndexFromArrayIndex(arrayIndex); + p = current->arrayData + pidx; + PropertyAttributes a = current->arrayAttributes ? current->arrayAttributes[pidx] : PropertyAttributes(Attr_Data); + ++arrayIndex; + if ((!current->arrayAttributes || !current->arrayAttributes[pidx].isGeneric()) + && (!(flags & EnumberableOnly) || a.isEnumerable())) { + *index = arrayIndex - 1; + if (attrs) + *attrs = a; + return p; + } + } + + if (memberIndex == current->internalClass->size) { + if (flags & WithProtoChain) + current = current->prototype; + else + current = 0; + if (current && current->asStringObject()) + flags |= CurrentIsString; + else + flags &= ~CurrentIsString; + + + arrayIndex = 0; + memberIndex = 0; + continue; + } + String *n = current->internalClass->nameMap.at(memberIndex); + assert(n); + // ### check that it's not a repeated attribute + + p = current->memberData + memberIndex; + PropertyAttributes a = current->internalClass->propertyData[memberIndex]; + ++memberIndex; + if (!(flags & EnumberableOnly) || a.isEnumerable()) { + *name = n; + if (attrs) + *attrs = a; + return p; + } + } + return 0; +} + +Value ObjectIterator::nextPropertyName() +{ + uint index; + String *name; + next(&name, &index); + if (name) + return Value::fromString(name); + if (index < UINT_MAX) + return Value::fromDouble(index); + return Value::nullValue(); +} + +Value ObjectIterator::nextPropertyNameAsString() +{ + uint index; + String *name; + next(&name, &index); + if (name) + return Value::fromString(name); + if (index < UINT_MAX) + return __qmljs_to_string(Value::fromDouble(index), context); + return Value::nullValue(); +} + +} +} + |