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39
40#ifndef QQMLSCRIPTDATA_P_H
41#define QQMLSCRIPTDATA_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <private/qqmlrefcount_p.h>
55#include <private/qqmlcleanup_p.h>
56#include <private/qqmlscriptblob_p.h>
57#include <private/qv4value_p.h>
58#include <private/qv4persistent_p.h>
59#include <private/qv4executablecompilationunit_p.h>
60
61#include <QtCore/qurl.h>
62
63QT_BEGIN_NAMESPACE
64
65class QQmlTypeNameCache;
66class QQmlContextData;
67
68// QQmlScriptData instances are created, uninitialized, by the loader in the
69// load thread. The first time they are used by the VME, they are initialized which
70// creates their v8 objects and they are referenced and added to the engine's cleanup
71// list. During QQmlCleanup::clear() all v8 resources are destroyed, and the
72// reference that was created is released but final deletion only occurs once all the
73// references as released. This is all intended to ensure that the v8 resources are
74// only created and destroyed in the main thread :)
75class Q_AUTOTEST_EXPORT QQmlScriptData : public QQmlCleanup, public QQmlRefCount
76{
77private:
78 friend class QQmlTypeLoader;
79
80 QQmlScriptData();
81
82public:
83 QUrl url;
84 QString urlString;
85 QQmlTypeNameCache *typeNameCache;
86 QVector<QQmlRefPointer<QQmlScriptBlob>> scripts;
87
88 QV4::ReturnedValue scriptValueForContext(QQmlContextData *parentCtxt);
89
90 QQmlRefPointer<QV4::ExecutableCompilationUnit> compilationUnit() const { return m_precompiledScript; }
91
92protected:
93 void clear() override; // From QQmlCleanup
94
95private:
96 friend class QQmlScriptBlob;
97
98 void initialize(QQmlEngine *);
99 QQmlContextData *qmlContextDataForContext(QQmlContextData *parentQmlContextData);
100
101 bool m_loaded;
102 QQmlRefPointer<QV4::ExecutableCompilationUnit> m_precompiledScript;
103 QV4::PersistentValue m_value;
104};
105
106QT_END_NAMESPACE
107
108#endif // QQMLSCRIPTDATA_P_H
109