| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | #ifndef QV4IDENTIFIERTABLE_H |
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| 4 | #define QV4IDENTIFIERTABLE_H |
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| 5 | |
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| 6 | // |
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| 7 | // W A R N I N G |
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| 8 | // ------------- |
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| 9 | // |
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| 10 | // This file is not part of the Qt API. It exists purely as an |
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| 11 | // implementation detail. This header file may change from version to |
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| 12 | // version without notice, or even be removed. |
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| 13 | // |
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| 14 | // We mean it. |
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| 15 | // |
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| 16 | |
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| 17 | #include "qv4identifierhash_p.h" |
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| 18 | #include "qv4string_p.h" |
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| 19 | #include "qv4engine_p.h" |
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| 20 | #include <qset.h> |
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| 21 | #include <limits.h> |
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| 22 | |
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| 23 | QT_BEGIN_NAMESPACE |
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| 24 | |
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| 25 | namespace QV4 { |
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| 26 | |
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| 27 | struct Q_QML_EXPORT IdentifierTable |
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| 28 | { |
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| 29 | ExecutionEngine *engine; |
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| 30 | |
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| 31 | uint alloc; |
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| 32 | uint size; |
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| 33 | int numBits; |
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| 34 | Heap::StringOrSymbol **entriesByHash; |
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| 35 | Heap::StringOrSymbol **entriesById; |
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| 36 | |
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| 37 | QSet<IdentifierHashData *> idHashes; |
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| 38 | |
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| 39 | void addEntry(Heap::StringOrSymbol *str); |
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| 40 | |
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| 41 | public: |
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| 42 | |
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| 43 | IdentifierTable(ExecutionEngine *engine, int numBits = 8); |
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| 44 | ~IdentifierTable(); |
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| 45 | |
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| 46 | Heap::String *insertString(const QString &s); |
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| 47 | Heap::Symbol *insertSymbol(const QString &s); |
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| 48 | |
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| 49 | PropertyKey asPropertyKey(const Heap::String *str) { |
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| 50 | if (str->identifier.isValid()) |
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| 51 | return str->identifier; |
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| 52 | return asPropertyKeyImpl(str); |
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| 53 | } |
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| 54 | PropertyKey asPropertyKey(const QV4::String *str) { |
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| 55 | return asPropertyKey(str: str->d()); |
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| 56 | } |
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| 57 | |
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| 58 | enum KeyConversionBehavior { Default, ForceConversionToId }; |
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| 59 | PropertyKey asPropertyKey(const QString &s, KeyConversionBehavior conversionBehavior = Default); |
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| 60 | |
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| 61 | PropertyKey asPropertyKeyImpl(const Heap::String *str); |
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| 62 | |
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| 63 | Heap::StringOrSymbol *resolveId(PropertyKey i) const; |
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| 64 | Heap::String *stringForId(PropertyKey i) const; |
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| 65 | Heap::Symbol *symbolForId(PropertyKey i) const; |
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| 66 | |
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| 67 | void markObjects(MarkStack *markStack); |
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| 68 | void sweep(); |
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| 69 | |
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| 70 | void addIdentifierHash(IdentifierHashData *h) { |
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| 71 | idHashes.insert(value: h); |
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| 72 | } |
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| 73 | void removeIdentifierHash(IdentifierHashData *h) { |
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| 74 | idHashes.remove(value: h); |
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| 75 | } |
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| 76 | |
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| 77 | private: |
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| 78 | Heap::String *resolveStringEntry(const QString &s, uint hash, uint subtype); |
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| 79 | }; |
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| 80 | |
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| 81 | } |
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| 82 | |
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| 83 | QT_END_NAMESPACE |
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| 84 | |
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| 85 | #endif |
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| 86 | |
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