QmlBasicScript should work on the actual JS AST tree

1 files changed, 104 insertions, 0 deletions

diff --git a/src/declarative/qml/qmlbasicscript_p.h b/src/declarative/qml/qmlbasicscript_p.h
new file mode 100644
index 0000000..1117e11
--- /dev/null
+++ b/src/declarative/qml/qmlbasicscript_p.h
@@ -0,0 +1,104 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $TROLLTECH_DUAL_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMLBASICSCRIPT_P_H
+#define QMLBASICSCRIPT_P_H
+
+#include <QtCore/QList>
+#include <QtCore/QByteArray>
+#include <QtCore/QVariant>
+#include <private/qmlparser_p.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QmlRefCount;
+class QmlContext;
+class QmlBasicScriptPrivate;
+class QmlBasicScriptNodeCache;
+class QmlBasicScript
+{
+public:
+    QmlBasicScript();
+    QmlBasicScript(const char *, QmlRefCount * = 0);
+    ~QmlBasicScript();
+
+    // Always 4-byte aligned
+    const char *compileData() const;
+    unsigned int compileDataSize() const;
+
+    QByteArray expression() const;
+
+    bool compile(const QmlParser::Variant &);
+    bool isValid() const;
+
+    void clear();
+
+    void dump();
+    void *newScriptState();
+    void deleteScriptState(void *);
+
+    enum CacheState { NoChange, Incremental, Reset };
+    QVariant run(QmlContext *, void *, CacheState *);
+
+    // Optimization opportunities
+    bool isSingleLoad() const;
+    QByteArray singleLoadTarget() const;
+
+private:
+    int flags;
+    QmlBasicScriptPrivate *d;
+    QmlRefCount *rc;
+
+    void clearCache(void *);
+    void guard(QmlBasicScriptNodeCache &);
+    bool valid(QmlBasicScriptNodeCache &, QObject *);
+};
+
+class QmlContextPrivate;
+class QDebug;
+class QmlBasicScriptNodeCache
+{
+public:
+    QObject *object;
+    const QMetaObject *metaObject;
+    enum { Invalid,
+           Core, 
+           Attached, 
+           Signal,
+           SignalProperty, 
+           Variant
+    } type;
+    union {
+        int core;
+        QObject *attached;
+        QmlContextPrivate *context;
+    };
+    int coreType;
+    int contextIndex;
+
+    bool isValid() const { return type != Invalid; }
+    bool isCore() const { return type == Core; }
+    bool isVariant() const { return type == Variant; }
+    void clear();
+    QVariant value(const char *) const;
+};
+
+QDebug operator<<(QDebug, const QmlBasicScriptNodeCache &);
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QMLBASICSCRIPT_P_H
+
+