diff options
author | Robin Burchell <robin.burchell@crimson.no> | 2018-05-29 22:41:34 +0200 |
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committer | Robin Burchell <robin.burchell@crimson.no> | 2018-06-01 11:53:37 +0000 |
commit | a0fcf724ef1d8586301a913d2cd744aed33e3605 (patch) | |
tree | 07f9c32d835b0323e591fc5dc6f840f3ce426528 /src/qml/jsruntime/qv4mapiterator.cpp | |
parent | 19f657d9957e29034c719d6a6b015f7a78ae1a4a (diff) |
Add the start of a Map from ES7
Like Set, for the time being, this is baseed on top of ArrayObject: two
of them, one for keys, one for values. Again, this goes against the
spirit of the spec (which requires nonlinear access), but having the API
present is at least a start, and the implementation is easily changed.
Change-Id: Idcf0ad8d92eb5daac734d52e8e2dd4c8e0dd5109
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Diffstat (limited to 'src/qml/jsruntime/qv4mapiterator.cpp')
-rw-r--r-- | src/qml/jsruntime/qv4mapiterator.cpp | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/qml/jsruntime/qv4mapiterator.cpp b/src/qml/jsruntime/qv4mapiterator.cpp new file mode 100644 index 0000000000..74b0dda791 --- /dev/null +++ b/src/qml/jsruntime/qv4mapiterator.cpp @@ -0,0 +1,109 @@ +/**************************************************************************** +** +** 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/qv4mapiterator_p.h> +#include <private/qv4mapobject_p.h> +#include <private/qv4symbol_p.h> + +using namespace QV4; + +DEFINE_OBJECT_VTABLE(MapIteratorObject); + +void MapIteratorPrototype::init(ExecutionEngine *e) +{ + defineDefaultProperty(QStringLiteral("next"), method_next, 0); + + Scope scope(e); + ScopedString val(scope, e->newString(QLatin1String("Map Iterator"))); + defineReadonlyConfigurableProperty(e->symbol_toStringTag(), val); +} + +ReturnedValue MapIteratorPrototype::method_next(const FunctionObject *b, const Value *that, const Value *, int) +{ + Scope scope(b); + const MapIteratorObject *thisObject = that->as<MapIteratorObject>(); + if (!thisObject) + return scope.engine->throwTypeError(QLatin1String("Not a Map Iterator instance")); + + Scoped<MapObject> s(scope, thisObject->d()->iteratedMap); + quint32 index = thisObject->d()->mapNextIndex; + IteratorKind itemKind = thisObject->d()->iterationKind; + + if (!s) { + QV4::Value undefined = Primitive::undefinedValue(); + return IteratorPrototype::createIterResultObject(scope.engine, undefined, true); + } + + Scoped<ArrayObject> keys(scope, s->d()->mapKeys); + Scoped<ArrayObject> values(scope, s->d()->mapValues); + + while (index < keys->getLength()) { + ScopedValue sk(scope, keys->getIndexed(index)); + ScopedValue sv(scope, values->getIndexed(index)); + index += 1; + thisObject->d()->mapNextIndex = index; + + ScopedValue result(scope); + + if (itemKind == KeyIteratorKind) { + result = sk; + } else if (itemKind == ValueIteratorKind) { + result = sv; + } else { + Q_ASSERT(itemKind == KeyValueIteratorKind); + + result = scope.engine->newArrayObject(); + + Scoped<ArrayObject> resultArray(scope, result); + resultArray->arrayReserve(2); + resultArray->arrayPut(0, sk); + resultArray->arrayPut(1, sv); + resultArray->setArrayLengthUnchecked(2); + } + + return IteratorPrototype::createIterResultObject(scope.engine, result, false); + } + + thisObject->d()->iteratedMap.set(scope.engine, nullptr); + QV4::Value undefined = Primitive::undefinedValue(); + return IteratorPrototype::createIterResultObject(scope.engine, undefined, true); +} + + |