Merge branch 'master' of ssh://codereview.qt-project.org:29418/playground/v4vm into v4

This is the initial merge of the v4vm JS engine, designed specifically for QML.

The engine is tested on Linux and Mac OS X, works on x86, x86-64 and ARM.

Change-Id: I826b72cfa3d3575007b70d78604080582db568db

Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 169 insertions, 0 deletions

diff --git a/src/qml/qml/v4vm/qv4global.h b/src/qml/qml/v4vm/qv4global.h
new file mode 100644
index 0000000000..5f3f1b6d17
--- /dev/null
+++ b/src/qml/qml/v4vm/qv4global.h
@@ -0,0 +1,169 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the V4VM module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QV4GLOBAL_H
+#define QV4GLOBAL_H
+
+#include <QtCore/qglobal.h>
+
+QT_BEGIN_NAMESPACE
+
+#ifndef QT_STATIC
+#  if defined(QT_BUILD_V4_LIB)
+#    define Q_V4_EXPORT Q_DECL_EXPORT
+#  else
+#    define Q_V4_EXPORT Q_DECL_IMPORT
+#  endif
+#else
+#  define Q_V4_EXPORT
+#endif
+
+namespace QQmlJS {
+namespace VM {
+
+
+enum PropertyFlag {
+    Attr_Data = 0,
+    Attr_Accessor = 0x1,
+    Attr_NotWritable = 0x2,
+    Attr_NotEnumerable = 0x4,
+    Attr_NotConfigurable = 0x8,
+    Attr_ReadOnly = Attr_NotWritable|Attr_NotEnumerable|Attr_NotConfigurable,
+    Attr_Invalid = 0xff
+};
+
+Q_DECLARE_FLAGS(PropertyFlags, PropertyFlag);
+Q_DECLARE_OPERATORS_FOR_FLAGS(PropertyFlags);
+
+struct PropertyAttributes
+{
+    union {
+        uchar m_all;
+        struct {
+            uchar m_flags : 4;
+            uchar m_mask : 4;
+        };
+        struct {
+            uchar m_type : 1;
+            uchar m_writable : 1;
+            uchar m_enumerable : 1;
+            uchar m_configurable : 1;
+            uchar type_set : 1;
+            uchar writable_set : 1;
+            uchar enumerable_set : 1;
+            uchar configurable_set : 1;
+        };
+    };
+
+    enum Type {
+        Data = 0,
+        Accessor = 1,
+        Generic = 2
+    };
+
+    PropertyAttributes() : m_all(0) {}
+    PropertyAttributes(PropertyFlag f) : m_all(0) {
+        if (f != Attr_Invalid) {
+            setType(f & Attr_Accessor ? Accessor : Data);
+            if (!(f & Attr_Accessor))
+                setWritable(!(f & Attr_NotWritable));
+            setEnumerable(!(f & Attr_NotEnumerable));
+            setConfigurable(!(f & Attr_NotConfigurable));
+        }
+    }
+    PropertyAttributes(PropertyFlags f) : m_all(0) {
+        if (f != Attr_Invalid) {
+            setType(f & Attr_Accessor ? Accessor : Data);
+            if (!(f & Attr_Accessor))
+                setWritable(!(f & Attr_NotWritable));
+            setEnumerable(!(f & Attr_NotEnumerable));
+            setConfigurable(!(f & Attr_NotConfigurable));
+        }
+    }
+    PropertyAttributes(const PropertyAttributes &other) : m_all(other.m_all) {}
+    PropertyAttributes & operator=(const PropertyAttributes &other) { m_all = other.m_all; return *this; }
+
+    void setType(Type t) { m_type = t; type_set = true; }
+    Type type() const { return type_set ? (Type)m_type : Generic; }
+
+    bool isData() const { return type() == PropertyAttributes::Data || writable_set; }
+    bool isAccessor() const { return type() == PropertyAttributes::Accessor; }
+    bool isGeneric() const { return type() == PropertyAttributes::Generic && !writable_set; }
+
+    bool hasType() const { return type_set; }
+    bool hasWritable() const { return writable_set; }
+    bool hasConfigurable() const { return configurable_set; }
+    bool hasEnumerable() const { return enumerable_set; }
+
+    void setWritable(bool b) { m_writable = b; writable_set = true; }
+    void setConfigurable(bool b) { m_configurable = b; configurable_set = true; }
+    void setEnumerable(bool b) { m_enumerable = b; enumerable_set = true; }
+
+    void resolve() { m_mask = 0xf; if (m_type == Accessor) { m_writable = false; writable_set = false; } }
+
+    bool isWritable() const { return m_type != Data || m_writable; }
+    bool isEnumerable() const { return m_enumerable; }
+    bool isConfigurable() const { return m_configurable; }
+
+    void clearType() { m_type = Data; type_set = false; }
+    void clearWritable() { m_writable = false; writable_set = false; }
+    void clearEnumerable() { m_enumerable = false; enumerable_set = false; }
+    void clearConfigurable() { m_configurable = false; configurable_set = false; }
+
+    void clear() { m_all = 0; }
+    bool isEmpty() const { return !m_all; }
+
+    uint flags() const { return m_flags; }
+
+    bool operator==(PropertyAttributes other) {
+        return m_all == other.m_all;
+    }
+    bool operator!=(PropertyAttributes other) {
+        return m_all != other.m_all;
+    }
+};
+
+}
+}
+
+QT_END_NAMESPACE
+
+#endif // QV4GLOBAL_H