| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** 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. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| #ifndef QV4IDENTIFIER_H |
| #define QV4IDENTIFIER_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <qstring.h> |
| #include <private/qv4global_p.h> |
| #include <private/qv4propertykey_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QV4 { |
| |
| struct IdentifierHashEntry { |
| PropertyKey identifier; |
| int value; |
| }; |
| |
| struct IdentifierHashData |
| { |
| IdentifierHashData(IdentifierTable *table, int numBits); |
| explicit IdentifierHashData(IdentifierHashData *other); |
| ~IdentifierHashData(); |
| void markObjects(MarkStack *markStack) const; |
| |
| QBasicAtomicInt refCount; |
| int alloc; |
| int size; |
| int numBits; |
| IdentifierTable *identifierTable; |
| IdentifierHashEntry *entries; |
| }; |
| |
| struct IdentifierHash |
| { |
| |
| IdentifierHashData *d = nullptr; |
| |
| IdentifierHash() {} |
| IdentifierHash(ExecutionEngine *engine); |
| inline IdentifierHash(const IdentifierHash &other); |
| inline ~IdentifierHash(); |
| inline IdentifierHash &operator=(const IdentifierHash &other); |
| |
| bool isEmpty() const { return !d; } |
| |
| inline int count() const; |
| |
| void detach(); |
| |
| void add(const QString &str, int value); |
| void add(Heap::String *str, int value); |
| |
| inline int value(const QString &str) const; |
| inline int value(String *str) const; |
| QString findId(int value) const; |
| |
| protected: |
| IdentifierHashEntry *addEntry(PropertyKey i); |
| const IdentifierHashEntry *lookup(PropertyKey identifier) const; |
| const IdentifierHashEntry *lookup(const QString &str) const; |
| const IdentifierHashEntry *lookup(String *str) const; |
| const PropertyKey toIdentifier(const QString &str) const; |
| const PropertyKey toIdentifier(Heap::String *str) const; |
| }; |
| |
| |
| inline IdentifierHash::IdentifierHash(const IdentifierHash &other) |
| { |
| d = other.d; |
| if (d) |
| d->refCount.ref(); |
| } |
| |
| inline IdentifierHash::~IdentifierHash() |
| { |
| if (d && !d->refCount.deref()) |
| delete d; |
| } |
| |
| IdentifierHash &IdentifierHash::operator=(const IdentifierHash &other) |
| { |
| if (other.d) |
| other.d->refCount.ref(); |
| if (d && !d->refCount.deref()) |
| delete d; |
| d = other.d; |
| return *this; |
| } |
| |
| inline int IdentifierHash::count() const |
| { |
| return d ? d->size : 0; |
| } |
| |
| inline |
| void IdentifierHash::add(const QString &str, int value) |
| { |
| IdentifierHashEntry *e = addEntry(toIdentifier(str)); |
| e->value = value; |
| } |
| |
| inline |
| void IdentifierHash::add(Heap::String *str, int value) |
| { |
| IdentifierHashEntry *e = addEntry(toIdentifier(str)); |
| e->value = value; |
| } |
| |
| inline int IdentifierHash::value(const QString &str) const |
| { |
| const IdentifierHashEntry *e = lookup(str); |
| return e ? e->value : -1; |
| } |
| |
| inline int IdentifierHash::value(String *str) const |
| { |
| const IdentifierHashEntry *e = lookup(str); |
| return e ? e->value : -1; |
| } |
| |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif |