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39#ifndef QV4COMPILER_P_H
40#define QV4COMPILER_P_H
41
42//
43// W A R N I N G
44// -------------
45//
46// This file is not part of the Qt API. It exists purely as an
47// implementation detail. This header file may change from version to
48// version without notice, or even be removed.
49//
50// We mean it.
51//
52
53#include <QtCore/qstring.h>
54#include <QtCore/qhash.h>
55#include <QtCore/qstringlist.h>
56#include <private/qv4compilerglobal_p.h>
57#include <private/qqmljsastfwd_p.h>
58#include <private/qv4compileddata_p.h>
59#include <private/qv4staticvalue_p.h>
60
61QT_BEGIN_NAMESPACE
62
63class QQmlPropertyData;
64
65namespace QV4 {
66
67namespace CompiledData {
68struct Unit;
69struct Lookup;
70struct RegExp;
71struct JSClassMember;
72}
73
74namespace Compiler {
75
76struct Context;
77struct Module;
78struct Class;
79struct TemplateObject;
80
81struct Q_QMLCOMPILER_PRIVATE_EXPORT StringTableGenerator {
82 StringTableGenerator();
83
84 int registerString(const QString &str);
85 int getStringId(const QString &string) const;
86 QString stringForIndex(int index) const { return strings.at(i: index); }
87 uint stringCount() const { return strings.size() - backingUnitTableSize; }
88
89 uint sizeOfTableAndData() const { return stringDataSize + ((stringCount() * sizeof(uint) + 7) & ~7); }
90
91 void freeze() { frozen = true; }
92
93 void clear();
94
95 void initializeFromBackingUnit(const CompiledData::Unit *unit);
96
97 void serialize(CompiledData::Unit *unit);
98 QStringList allStrings() const { return strings.mid(pos: backingUnitTableSize); }
99
100private:
101 QHash<QString, int> stringToId;
102 QStringList strings;
103 uint stringDataSize;
104 uint backingUnitTableSize = 0;
105 bool frozen = false;
106};
107
108struct Q_QMLCOMPILER_PRIVATE_EXPORT JSUnitGenerator {
109 static void generateUnitChecksum(CompiledData::Unit *unit);
110
111 struct MemberInfo {
112 QString name;
113 bool isAccessor;
114 };
115
116 JSUnitGenerator(Module *module);
117
118 int registerString(const QString &str) { return stringTable.registerString(str); }
119 int getStringId(const QString &string) const { return stringTable.getStringId(string); }
120 QString stringForIndex(int index) const { return stringTable.stringForIndex(index); }
121
122 int registerGetterLookup(const QString &name);
123 int registerGetterLookup(int nameIndex);
124 int registerSetterLookup(const QString &name);
125 int registerSetterLookup(int nameIndex);
126 int registerGlobalGetterLookup(int nameIndex);
127 int registerQmlContextPropertyGetterLookup(int nameIndex);
128
129 int registerRegExp(QQmlJS::AST::RegExpLiteral *regexp);
130
131 int registerConstant(ReturnedValue v);
132 ReturnedValue constant(int idx);
133
134 int registerJSClass(const QStringList &members);
135
136 int registerTranslation(const CompiledData::TranslationData &translation);
137
138 enum GeneratorOption {
139 GenerateWithStringTable,
140 GenerateWithoutStringTable
141 };
142
143 QV4::CompiledData::Unit *generateUnit(GeneratorOption option = GenerateWithStringTable);
144 void writeFunction(char *f, Context *irFunction) const;
145 void writeClass(char *f, const Class &c);
146 void writeTemplateObject(char *f, const TemplateObject &o);
147 void writeBlock(char *f, Context *irBlock) const;
148
149 StringTableGenerator stringTable;
150 QString codeGeneratorName;
151private:
152 CompiledData::Unit generateHeader(GeneratorOption option, quint32_le *functionOffsets, uint *jsClassDataOffset);
153
154 Module *module;
155
156 QList<CompiledData::Lookup> lookups;
157 QVector<CompiledData::RegExp> regexps;
158 QVector<ReturnedValue> constants;
159 QByteArray jsClassData;
160 QVector<int> jsClassOffsets;
161 QVector<CompiledData::TranslationData> translations;
162};
163
164}
165
166}
167
168QT_END_NAMESPACE
169
170#endif
171

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