1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3#ifndef QV4COMPILER_P_H
4#define QV4COMPILER_P_H
5
6//
7// W A R N I N G
8// -------------
9//
10// This file is not part of the Qt API. It exists purely as an
11// implementation detail. This header file may change from version to
12// version without notice, or even be removed.
13//
14// We mean it.
15//
16
17#include <QtCore/qstring.h>
18#include <QtCore/qhash.h>
19#include <QtCore/qstringlist.h>
20#include <private/qv4compilerglobal_p.h>
21#include <private/qqmljsastfwd_p.h>
22#include <private/qv4compileddata_p.h>
23#include <private/qv4staticvalue_p.h>
24
25QT_BEGIN_NAMESPACE
26
27class QQmlPropertyData;
28
29namespace QV4 {
30
31namespace CompiledData {
32struct Unit;
33struct Lookup;
34struct RegExp;
35struct JSClassMember;
36}
37
38namespace Compiler {
39
40struct Context;
41struct Module;
42struct Class;
43struct TemplateObject;
44
45struct Q_QML_COMPILER_EXPORT StringTableGenerator {
46 StringTableGenerator();
47
48 int registerString(const QString &str);
49 int getStringId(const QString &string) const;
50 bool hasStringId(const QString &string) const { return stringToId.contains(key: string); }
51 QString stringForIndex(int index) const { return strings.at(i: index); }
52 uint stringCount() const { return strings.size() - backingUnitTableSize; }
53
54 uint sizeOfTableAndData() const { return stringDataSize + ((stringCount() * sizeof(uint) + 7) & ~7); }
55
56 void freeze() { frozen = true; }
57
58 void clear();
59
60 void initializeFromBackingUnit(const CompiledData::Unit *unit);
61
62 void serialize(CompiledData::Unit *unit);
63 QStringList allStrings() const { return strings.mid(pos: backingUnitTableSize); }
64
65private:
66 QHash<QString, int> stringToId;
67 QStringList strings;
68 uint stringDataSize;
69 uint backingUnitTableSize = 0;
70 bool frozen = false;
71};
72
73struct Q_QML_COMPILER_EXPORT JSUnitGenerator {
74 enum LookupMode { LookupForStorage, LookupForCall };
75
76 static void generateUnitChecksum(CompiledData::Unit *unit);
77
78 struct MemberInfo {
79 QString name;
80 bool isAccessor;
81 };
82
83 JSUnitGenerator(Module *module);
84
85 int registerString(const QString &str) { return stringTable.registerString(str); }
86 int getStringId(const QString &string) const { return stringTable.getStringId(string); }
87 bool hasStringId(const QString &string) const { return stringTable.hasStringId(string); }
88 QString stringForIndex(int index) const { return stringTable.stringForIndex(index); }
89
90 int registerGetterLookup(const QString &name, LookupMode mode);
91 int registerGetterLookup(int nameIndex, LookupMode mode);
92 int registerSetterLookup(const QString &name);
93 int registerSetterLookup(int nameIndex);
94 int registerGlobalGetterLookup(int nameIndex, LookupMode mode);
95 int registerQmlContextPropertyGetterLookup(int nameIndex, LookupMode mode);
96 int lookupNameIndex(int index) const { return lookups[index].nameIndex(); }
97 QString lookupName(int index) const { return stringForIndex(index: lookupNameIndex(index)); }
98
99 int registerRegExp(QQmlJS::AST::RegExpLiteral *regexp);
100
101 int registerConstant(ReturnedValue v);
102 ReturnedValue constant(int idx) const;
103
104 int registerJSClass(const QStringList &members);
105 int jsClassSize(int jsClassId) const;
106 QString jsClassMember(int jsClassId, int member) const;
107
108 int registerTranslation(const CompiledData::TranslationData &translation);
109
110 enum GeneratorOption {
111 GenerateWithStringTable,
112 GenerateWithoutStringTable
113 };
114
115 QV4::CompiledData::Unit *generateUnit(GeneratorOption option = GenerateWithStringTable);
116 void writeFunction(char *f, Context *irFunction) const;
117 void writeClass(char *f, const Class &c);
118 void writeTemplateObject(char *f, const TemplateObject &o);
119 void writeBlock(char *f, Context *irBlock) const;
120
121 StringTableGenerator stringTable;
122 QString codeGeneratorName;
123
124private:
125 CompiledData::Unit generateHeader(GeneratorOption option, quint32_le *functionOffsets, uint *jsClassDataOffset);
126
127 Module *module;
128
129 QList<CompiledData::Lookup> lookups;
130 QVector<CompiledData::RegExp> regexps;
131 QVector<ReturnedValue> constants;
132 QByteArray jsClassData;
133 QVector<int> jsClassOffsets;
134 QVector<CompiledData::TranslationData> translations;
135};
136
137}
138
139}
140
141QT_END_NAMESPACE
142
143#endif
144

source code of qtdeclarative/src/qml/compiler/qv4compiler_p.h