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, 243 insertions, 0 deletions

diff --git a/src/qml/qml/v4vm/qv4functionobject.h b/src/qml/qml/v4vm/qv4functionobject.h
new file mode 100644
index 0000000000..4dddc048f9
--- /dev/null
+++ b/src/qml/qml/v4vm/qv4functionobject.h
@@ -0,0 +1,243 @@
+/****************************************************************************
+**
+** 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 QV4FUNCTIONOBJECT_H
+#define QV4FUNCTIONOBJECT_H
+
+#include "qv4global.h"
+#include "qv4runtime.h"
+#include "qv4engine.h"
+#include "qv4context.h"
+#include "qv4object.h"
+#include "qv4string.h"
+#include "qv4codegen_p.h"
+#include "qv4isel_p.h"
+#include "qv4managed.h"
+#include "qv4property.h"
+#include "qv4objectiterator.h"
+#include "qv4regexp.h"
+
+#include <QtCore/QString>
+#include <QtCore/QHash>
+#include <QtCore/QScopedPointer>
+#include <cstdio>
+#include <cassert>
+
+#include <config.h>
+#include <assembler/MacroAssemblerCodeRef.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QQmlJS {
+namespace VM {
+
+struct Value;
+struct Function;
+struct Object;
+struct ObjectIterator;
+struct BooleanObject;
+struct NumberObject;
+struct StringObject;
+struct ArrayObject;
+struct DateObject;
+struct FunctionObject;
+struct RegExpObject;
+struct ErrorObject;
+struct ArgumentsObject;
+struct ExecutionContext;
+struct ExecutionEngine;
+class MemoryManager;
+
+struct ObjectPrototype;
+struct StringPrototype;
+struct NumberPrototype;
+struct BooleanPrototype;
+struct ArrayPrototype;
+struct FunctionPrototype;
+struct DatePrototype;
+struct RegExpPrototype;
+struct ErrorPrototype;
+struct EvalErrorPrototype;
+struct RangeErrorPrototype;
+struct ReferenceErrorPrototype;
+struct SyntaxErrorPrototype;
+struct TypeErrorPrototype;
+struct URIErrorPrototype;
+struct InternalClass;
+struct Lookup;
+
+struct Function {
+    String *name;
+
+    VM::Value (*code)(VM::ExecutionContext *, const uchar *);
+    const uchar *codeData;
+    JSC::MacroAssemblerCodeRef codeRef;
+    quint32 codeSize;
+    QByteArray unwindInfo; // CIE+FDE on x86/x86-64. Stored directly in code on ARM.
+
+    QVector<String *> formals;
+    QVector<String *> locals;
+    QVector<Value> generatedValues;
+    QVector<String *> identifiers;
+    QVector<Function *> nestedFunctions;
+    Function *outer;
+
+    Lookup *lookups;
+
+    bool hasNestedFunctions;
+    bool hasDirectEval;
+    bool usesArgumentsObject;
+    bool isStrict;
+    bool isNamedExpression;
+
+    Function(String *name)
+        : name(name)
+        , code(0)
+        , codeData(0)
+        , codeSize(0)
+        , outer(0)
+        , lookups(0)
+        , hasNestedFunctions(0)
+        , hasDirectEval(false)
+        , usesArgumentsObject(false)
+        , isStrict(false)
+        , isNamedExpression(false)
+    {}
+    ~Function();
+
+    inline bool needsActivation() const { return hasNestedFunctions || hasDirectEval || usesArgumentsObject; }
+
+    void mark();
+};
+
+struct Q_V4_EXPORT FunctionObject: Object {
+    ExecutionContext *scope;
+    String *name;
+    String * const *formalParameterList;
+    String * const *varList;
+    unsigned int formalParameterCount;
+    unsigned int varCount;
+    VM::Function *function;
+
+    FunctionObject(ExecutionContext *scope);
+
+    static Value construct(Managed *that, ExecutionContext *context, Value *args, int argc);
+    static Value call(Managed *that, ExecutionContext *, const Value &, Value *, int);
+    inline Value construct(ExecutionContext *context, Value *args, int argc) {
+        return vtbl->construct(this, context, args, argc);
+    }
+    inline Value call(ExecutionContext *context, const Value &thisObject, Value *args, int argc) {
+        return vtbl->call(this, context, thisObject, args, argc);
+    }
+
+protected:
+    static const ManagedVTable static_vtbl;
+    static void markObjects(Managed *that);
+    static bool hasInstance(Managed *that, ExecutionContext *ctx, const Value &value);
+};
+
+struct FunctionCtor: FunctionObject
+{
+    FunctionCtor(ExecutionContext *scope);
+
+    static Value construct(Managed *that, ExecutionContext *context, Value *args, int argc);
+    static Value call(Managed *that, ExecutionContext *, const Value &, Value *, int);
+
+protected:
+    static const ManagedVTable static_vtbl;
+};
+
+struct FunctionPrototype: FunctionObject
+{
+    FunctionPrototype(ExecutionContext *ctx): FunctionObject(ctx) {}
+    void init(ExecutionContext *ctx, const Value &ctor);
+
+    static Value method_toString(SimpleCallContext *ctx);
+    static Value method_apply(SimpleCallContext *ctx);
+    static Value method_call(SimpleCallContext *ctx);
+    static Value method_bind(SimpleCallContext *ctx);
+};
+
+struct BuiltinFunctionOld: FunctionObject {
+    Value (*code)(SimpleCallContext *);
+
+    BuiltinFunctionOld(ExecutionContext *scope, String *name, Value (*code)(SimpleCallContext *));
+
+    static Value construct(Managed *, ExecutionContext *context, Value *args, int argc);
+    static Value call(Managed *that, ExecutionContext *, const Value &, Value *, int);
+
+protected:
+    static const ManagedVTable static_vtbl;
+};
+
+struct ScriptFunction: FunctionObject {
+    ScriptFunction(ExecutionContext *scope, VM::Function *function);
+
+    static Value construct(Managed *, ExecutionContext *context, Value *args, int argc);
+    static Value call(Managed *that, ExecutionContext *, const Value &, Value *, int);
+
+protected:
+    static const ManagedVTable static_vtbl;
+};
+
+struct BoundFunction: FunctionObject {
+    FunctionObject *target;
+    Value boundThis;
+    QVector<Value> boundArgs;
+
+    BoundFunction(ExecutionContext *scope, FunctionObject *target, Value boundThis, const QVector<Value> &boundArgs);
+    ~BoundFunction() {}
+
+
+    static Value construct(Managed *, ExecutionContext *context, Value *args, int argc);
+    static Value call(Managed *that, ExecutionContext *, const Value &, Value *, int);
+
+    static const ManagedVTable static_vtbl;
+    static void destroy(Managed *);
+    static void markObjects(Managed *that);
+    static bool hasInstance(Managed *that, ExecutionContext *ctx, const Value &value);
+};
+
+} // namespace VM
+} // namespace QQmlJS
+
+QT_END_NAMESPACE
+
+#endif // QMLJS_OBJECTS_H