diff options
author | Robin Burchell <robin.burchell@crimson.no> | 2018-05-27 15:04:23 +0200 |
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committer | Robin Burchell <robin.burchell@crimson.no> | 2018-05-30 20:57:17 +0000 |
commit | 19f657d9957e29034c719d6a6b015f7a78ae1a4a (patch) | |
tree | a6abb5af66c232426da622aadac40d767ed9b6b0 /src/qml/jsruntime/qv4setiterator.cpp | |
parent | e2fee3b9c4bdb1e4ba4834e1a30a250a190f73d2 (diff) |
Add the start of a Set from ES7
Based on top of an ArrayObject for now, which is admittedly a bit of a
cheat and not matching the "spirit" of the spec. OTOH, that makes it
easy to write, and is presumably quite lightweight, so perhaps this is acceptable
as a starting point.
Change-Id: Ibc98137965b3e75635b960a2f88c251d45e6e837
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Diffstat (limited to 'src/qml/jsruntime/qv4setiterator.cpp')
-rw-r--r-- | src/qml/jsruntime/qv4setiterator.cpp | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/qml/jsruntime/qv4setiterator.cpp b/src/qml/jsruntime/qv4setiterator.cpp new file mode 100644 index 0000000000..715a4e30d5 --- /dev/null +++ b/src/qml/jsruntime/qv4setiterator.cpp @@ -0,0 +1,100 @@ +/**************************************************************************** +** +** Copyright (C) 2018 Crimson AS <info@crimson.no> +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQml 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 The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/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 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <private/qv4iterator_p.h> +#include <private/qv4setiterator_p.h> +#include <private/qv4setobject_p.h> +#include <private/qv4symbol_p.h> + +using namespace QV4; + +DEFINE_OBJECT_VTABLE(SetIteratorObject); + +void SetIteratorPrototype::init(ExecutionEngine *e) +{ + defineDefaultProperty(QStringLiteral("next"), method_next, 0); + + Scope scope(e); + ScopedString val(scope, e->newString(QLatin1String("Set Iterator"))); + defineReadonlyConfigurableProperty(e->symbol_toStringTag(), val); +} + +ReturnedValue SetIteratorPrototype::method_next(const FunctionObject *b, const Value *that, const Value *, int) +{ + Scope scope(b); + const SetIteratorObject *thisObject = that->as<SetIteratorObject>(); + if (!thisObject) + return scope.engine->throwTypeError(QLatin1String("Not a Set Iterator instance")); + + Scoped<SetObject> s(scope, thisObject->d()->iteratedSet); + quint32 index = thisObject->d()->setNextIndex; + IteratorKind itemKind = thisObject->d()->iterationKind; + + + if (!s) { + QV4::Value undefined = Primitive::undefinedValue(); + return IteratorPrototype::createIterResultObject(scope.engine, undefined, true); + } + + Scoped<ArrayObject> arr(scope, s->d()->setArray); + + while (index < arr->getLength()) { + ScopedValue e(scope, arr->getIndexed(index)); + index += 1; + thisObject->d()->setNextIndex = index; + + if (itemKind == KeyValueIteratorKind) { + // Return CreateIterResultObject(CreateArrayFromList(« e, e »), false). + ScopedArrayObject resultArray(scope, scope.engine->newArrayObject()); + resultArray->arrayReserve(2); + resultArray->arrayPut(0, e); + resultArray->arrayPut(1, e); + resultArray->setArrayLengthUnchecked(2); + + return IteratorPrototype::createIterResultObject(scope.engine, resultArray, false); + } + + return IteratorPrototype::createIterResultObject(scope.engine, e, false); + } + + thisObject->d()->iteratedSet.set(scope.engine, nullptr); + QV4::Value undefined = Primitive::undefinedValue(); + return IteratorPrototype::createIterResultObject(scope.engine, undefined, true); +} + |