/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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
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** use the contact form at http://qt.digia.com/contact-us.
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** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
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** In addition, as a special exception, Digia gives you certain additional
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****************************************************************************/

#ifndef QV4INSTR_MOTH_P_H
#define QV4INSTR_MOTH_P_H

#include <QtCore/qglobal.h>
#include <private/qv4value_p.h>
#include <private/qv4function_p.h>
#include <private/qv4runtime_p.h>

QT_BEGIN_NAMESPACE

#define FOR_EACH_MOTH_INSTR(F) \
    F(Ret, ret) \
    F(Line, line) \
    F(Debug, debug) \
    F(LoadRuntimeString, loadRuntimeString) \
    F(LoadRegExp, loadRegExp) \
    F(LoadClosure, loadClosure) \
    F(Move, move) \
    F(MoveConst, moveConst) \
    F(SwapTemps, swapTemps) \
    F(LoadName, loadName) \
    F(GetGlobalLookup, getGlobalLookup) \
    F(StoreName, storeName) \
    F(LoadElement, loadElement) \
    F(LoadElementLookup, loadElementLookup) \
    F(StoreElement, storeElement) \
    F(StoreElementLookup, storeElementLookup) \
    F(LoadProperty, loadProperty) \
    F(GetLookup, getLookup) \
    F(StoreProperty, storeProperty) \
    F(SetLookup, setLookup) \
    F(StoreQObjectProperty, storeQObjectProperty) \
    F(LoadQObjectProperty, loadQObjectProperty) \
    F(LoadAttachedQObjectProperty, loadAttachedQObjectProperty) \
    F(LoadSingletonQObjectProperty, loadQObjectProperty) \
    F(Push, push) \
    F(CallValue, callValue) \
    F(CallProperty, callProperty) \
    F(CallPropertyLookup, callPropertyLookup) \
    F(CallElement, callElement) \
    F(CallActivationProperty, callActivationProperty) \
    F(CallGlobalLookup, callGlobalLookup) \
    F(SetExceptionHandler, setExceptionHandler) \
    F(CallBuiltinThrow, callBuiltinThrow) \
    F(CallBuiltinUnwindException, callBuiltinUnwindException) \
    F(CallBuiltinPushCatchScope, callBuiltinPushCatchScope) \
    F(CallBuiltinPushScope, callBuiltinPushScope) \
    F(CallBuiltinPopScope, callBuiltinPopScope) \
    F(CallBuiltinForeachIteratorObject, callBuiltinForeachIteratorObject) \
    F(CallBuiltinForeachNextPropertyName, callBuiltinForeachNextPropertyName) \
    F(CallBuiltinDeleteMember, callBuiltinDeleteMember) \
    F(CallBuiltinDeleteSubscript, callBuiltinDeleteSubscript) \
    F(CallBuiltinDeleteName, callBuiltinDeleteName) \
    F(CallBuiltinTypeofMember, callBuiltinTypeofMember) \
    F(CallBuiltinTypeofSubscript, callBuiltinTypeofSubscript) \
    F(CallBuiltinTypeofName, callBuiltinTypeofName) \
    F(CallBuiltinTypeofValue, callBuiltinTypeofValue) \
    F(CallBuiltinDeclareVar, callBuiltinDeclareVar) \
    F(CallBuiltinDefineArray, callBuiltinDefineArray) \
    F(CallBuiltinDefineObjectLiteral, callBuiltinDefineObjectLiteral) \
    F(CallBuiltinSetupArgumentsObject, callBuiltinSetupArgumentsObject) \
    F(CallBuiltinConvertThisToObject, callBuiltinConvertThisToObject) \
    F(CreateValue, createValue) \
    F(CreateProperty, createProperty) \
    F(ConstructPropertyLookup, constructPropertyLookup) \
    F(CreateActivationProperty, createActivationProperty) \
    F(ConstructGlobalLookup, constructGlobalLookup) \
    F(Jump, jump) \
    F(JumpEq, jumpEq) \
    F(JumpNe, jumpNe) \
    F(UNot, unot) \
    F(UNotBool, unotBool) \
    F(UPlus, uplus) \
    F(UMinus, uminus) \
    F(UCompl, ucompl) \
    F(UComplInt, ucomplInt) \
    F(Increment, increment) \
    F(Decrement, decrement) \
    F(Binop, binop) \
    F(Add, add) \
    F(BitAnd, bitAnd) \
    F(BitOr, bitOr) \
    F(BitXor, bitXor) \
    F(Shr, shr) \
    F(Shl, shl) \
    F(BitAndConst, bitAndConst) \
    F(BitOrConst, bitOrConst) \
    F(BitXorConst, bitXorConst) \
    F(ShrConst, shrConst) \
    F(ShlConst, shlConst) \
    F(Mul, mul) \
    F(Sub, sub) \
    F(BinopContext, binopContext) \
    F(LoadThis, loadThis) \
    F(LoadQmlIdArray, loadQmlIdArray) \
    F(LoadQmlImportedScripts, loadQmlImportedScripts) \
    F(LoadQmlContextObject, loadQmlContextObject) \
    F(LoadQmlScopeObject, loadQmlScopeObject) \
    F(LoadQmlSingleton, loadQmlSingleton)

#if defined(Q_CC_GNU) && (!defined(Q_CC_INTEL) || __INTEL_COMPILER >= 1200)
#  define MOTH_THREADED_INTERPRETER
#endif

#define MOTH_INSTR_ALIGN_MASK (Q_ALIGNOF(QV4::Moth::Instr) - 1)

#ifdef MOTH_THREADED_INTERPRETER
#  define MOTH_INSTR_HEADER void *code;
#else
#  define MOTH_INSTR_HEADER quint32 instructionType;
#endif

#define MOTH_INSTR_ENUM(I, FMT)  I,
#define MOTH_INSTR_SIZE(I, FMT) ((sizeof(QV4::Moth::Instr::instr_##FMT) + MOTH_INSTR_ALIGN_MASK) & ~MOTH_INSTR_ALIGN_MASK)


namespace QV4 {
namespace Moth {

struct Param {
    // Params are looked up as follows:
    // Constant: 0
    // Temp: 1
    // Argument: 2
    // Local: 3
    // Arg(outer): 4
    // Local(outer): 5
    // ...
    unsigned scope;
    unsigned index;

    bool isConstant() const { return !scope; }
    bool isArgument() const { return scope >= 2 && !(scope &1); }
    bool isLocal() const { return scope == 3; }
    bool isTemp() const { return scope == 1; }
    bool isScopedLocal() const { return scope >= 3 && (scope & 1); }

    static Param createConstant(int index)
    {
        Param p;
        p.scope = 0;
        p.index = index;
        return p;
    }

    static Param createArgument(unsigned idx, uint scope)
    {
        Param p;
        p.scope = 2 + 2*scope;
        p.index = idx;
        return p;
    }

    static Param createLocal(unsigned idx)
    {
        Param p;
        p.scope = 3;
        p.index = idx;
        return p;
    }

    static Param createTemp(unsigned idx)
    {
        Param p;
        p.scope = 1;
        p.index = idx;
        return p;
    }

    static Param createScopedLocal(unsigned idx, uint scope)
    {
        Param p;
        p.scope = 3 + 2*scope;
        p.index = idx;
        return p;
    }

    inline bool operator==(const Param &other) const
    { return scope == other.scope && index == other.index; }

    inline bool operator!=(const Param &other) const
    { return !(*this == other); }
};

union Instr
{
    enum Type {
        FOR_EACH_MOTH_INSTR(MOTH_INSTR_ENUM)
    };

    struct instr_common {
        MOTH_INSTR_HEADER
    };
    struct instr_ret {
        MOTH_INSTR_HEADER
        Param result;
    };
    struct instr_line {
        MOTH_INSTR_HEADER
        qint32 lineNumber;
    };
    struct instr_debug {
        MOTH_INSTR_HEADER
        qint32 lineNumber;
    };
    struct instr_loadRuntimeString {
        MOTH_INSTR_HEADER
        int stringId;
        Param result;
    };
    struct instr_loadRegExp {
        MOTH_INSTR_HEADER
        int regExpId;
        Param result;
    };
    struct instr_move {
        MOTH_INSTR_HEADER
        Param source;
        Param result;
    };
    struct instr_moveConst {
        MOTH_INSTR_HEADER
        QV4::ReturnedValue source;
        Param result;
    };
    struct instr_swapTemps {
        MOTH_INSTR_HEADER
        Param left;
        Param right;
    };
    struct instr_loadClosure {
        MOTH_INSTR_HEADER
        int value;
        Param result;
    };
    struct instr_loadName {
        MOTH_INSTR_HEADER
        int name;
        Param result;
    };
    struct instr_getGlobalLookup {
        MOTH_INSTR_HEADER
        int index;
        Param result;
    };
    struct instr_storeName {
        MOTH_INSTR_HEADER
        int name;
        Param source;
    };
    struct instr_loadProperty {
        MOTH_INSTR_HEADER
        int name;
        Param base;
        Param result;
    };
    struct instr_getLookup {
        MOTH_INSTR_HEADER
        int index;
        Param base;
        Param result;
    };
    struct instr_loadQObjectProperty {
        MOTH_INSTR_HEADER
        int propertyIndex;
        Param base;
        Param result;
        bool captureRequired;
    };
    struct instr_loadAttachedQObjectProperty {
        MOTH_INSTR_HEADER
        int propertyIndex;
        Param result;
        int attachedPropertiesId;
    };
    struct instr_storeProperty {
        MOTH_INSTR_HEADER
        int name;
        Param base;
        Param source;
    };
    struct instr_setLookup {
        MOTH_INSTR_HEADER
        int index;
        Param base;
        Param source;
    };
    struct instr_storeQObjectProperty {
        MOTH_INSTR_HEADER
        Param base;
        int propertyIndex;
        Param source;
    };
    struct instr_loadElement {
        MOTH_INSTR_HEADER
        Param base;
        Param index;
        Param result;
    };
    struct instr_loadElementLookup {
        MOTH_INSTR_HEADER
        uint lookup;
        Param base;
        Param index;
        Param result;
    };
    struct instr_storeElement {
        MOTH_INSTR_HEADER
        Param base;
        Param index;
        Param source;
    };
    struct instr_storeElementLookup {
        MOTH_INSTR_HEADER
        uint lookup;
        Param base;
        Param index;
        Param source;
    };
    struct instr_push {
        MOTH_INSTR_HEADER
        quint32 value;
    };
    struct instr_callValue {
        MOTH_INSTR_HEADER
        quint32 argc;
        quint32 callData;
        Param dest;
        Param result;
    };
    struct instr_callProperty {
        MOTH_INSTR_HEADER
        int name;
        quint32 argc;
        quint32 callData;
        Param base;
        Param result;
    };
    struct instr_callPropertyLookup {
        MOTH_INSTR_HEADER
        int lookupIndex;
        quint32 argc;
        quint32 callData;
        Param base;
        Param result;
    };
    struct instr_callElement {
        MOTH_INSTR_HEADER
        Param base;
        Param index;
        quint32 argc;
        quint32 callData;
        Param result;
    };
    struct instr_callActivationProperty {
        MOTH_INSTR_HEADER
        int name;
        quint32 argc;
        quint32 callData;
        Param result;
    };
    struct instr_callGlobalLookup {
        MOTH_INSTR_HEADER
        int index;
        quint32 argc;
        quint32 callData;
        Param result;
    };
    struct instr_setExceptionHandler {
        MOTH_INSTR_HEADER
        qptrdiff offset;
    };
    struct instr_callBuiltinThrow {
        MOTH_INSTR_HEADER
        Param arg;
    };
    struct instr_callBuiltinUnwindException {
        MOTH_INSTR_HEADER
        Param result;
    };
    struct instr_callBuiltinPushCatchScope {
        MOTH_INSTR_HEADER
        int name;
    };
    struct instr_callBuiltinPushScope {
        MOTH_INSTR_HEADER
        Param arg;
    };
    struct instr_callBuiltinPopScope {
        MOTH_INSTR_HEADER
    };
    struct instr_callBuiltinForeachIteratorObject {
        MOTH_INSTR_HEADER
        Param arg;
        Param result;
    };
    struct instr_callBuiltinForeachNextPropertyName {
        MOTH_INSTR_HEADER
        Param arg;
        Param result;
    };
    struct instr_callBuiltinDeleteMember {
        MOTH_INSTR_HEADER
        int member;
        Param base;
        Param result;
    };
    struct instr_callBuiltinDeleteSubscript {
        MOTH_INSTR_HEADER
        Param base;
        Param index;
        Param result;
    };
    struct instr_callBuiltinDeleteName {
        MOTH_INSTR_HEADER
        int name;
        Param result;
    };
    struct instr_callBuiltinTypeofMember {
        MOTH_INSTR_HEADER
        int member;
        Param base;
        Param result;
    };
    struct instr_callBuiltinTypeofSubscript {
        MOTH_INSTR_HEADER
        Param base;
        Param index;
        Param result;
    };
    struct instr_callBuiltinTypeofName {
        MOTH_INSTR_HEADER
        int name;
        Param result;
    };
    struct instr_callBuiltinTypeofValue {
        MOTH_INSTR_HEADER
        Param value;
        Param result;
    };
    struct instr_callBuiltinDeclareVar {
        MOTH_INSTR_HEADER
        int varName;
        bool isDeletable;
    };
    struct instr_callBuiltinDefineArray {
        MOTH_INSTR_HEADER
        quint32 argc;
        quint32 args;
        Param result;
    };
    struct instr_callBuiltinDefineObjectLiteral {
        MOTH_INSTR_HEADER
        int internalClassId;
        uint arrayValueCount;
        uint arrayGetterSetterCountAndFlags; // 30 bits for count, 1 bit for needsSparseArray boolean
        quint32 args;
        Param result;
    };
    struct instr_callBuiltinSetupArgumentsObject {
        MOTH_INSTR_HEADER
        Param result;
    };
    struct instr_callBuiltinConvertThisToObject {
        MOTH_INSTR_HEADER
    };
    struct instr_createValue {
        MOTH_INSTR_HEADER
        quint32 argc;
        quint32 callData;
        Param func;
        Param result;
    };
    struct instr_createProperty {
        MOTH_INSTR_HEADER
        int name;
        quint32 argc;
        quint32 callData;
        Param base;
        Param result;
    };
    struct instr_constructPropertyLookup {
        MOTH_INSTR_HEADER
        int index;
        quint32 argc;
        quint32 callData;
        Param base;
        Param result;
    };
    struct instr_createActivationProperty {
        MOTH_INSTR_HEADER
        int name;
        quint32 argc;
        quint32 callData;
        Param result;
    };
    struct instr_constructGlobalLookup {
        MOTH_INSTR_HEADER
        int index;
        quint32 argc;
        quint32 callData;
        Param result;
    };
    struct instr_jump {
        MOTH_INSTR_HEADER
        ptrdiff_t offset;
    };
    struct instr_jumpEq {
        MOTH_INSTR_HEADER
        ptrdiff_t offset;
        Param condition;
    };
    struct instr_jumpNe {
        MOTH_INSTR_HEADER
        ptrdiff_t offset;
        Param condition;
    };
    struct instr_unot {
        MOTH_INSTR_HEADER
        Param source;
        Param result;
    };
    struct instr_unotBool {
        MOTH_INSTR_HEADER
        Param source;
        Param result;
    };
    struct instr_uplus {
        MOTH_INSTR_HEADER
        Param source;
        Param result;
    };
    struct instr_uminus {
        MOTH_INSTR_HEADER
        Param source;
        Param result;
    };
    struct instr_ucompl {
        MOTH_INSTR_HEADER
        Param source;
        Param result;
    };
    struct instr_ucomplInt {
        MOTH_INSTR_HEADER
        Param source;
        Param result;
    };
    struct instr_increment {
        MOTH_INSTR_HEADER
        Param source;
        Param result;
    };
    struct instr_decrement {
        MOTH_INSTR_HEADER
        Param source;
        Param result;
    };
    struct instr_binop {
        MOTH_INSTR_HEADER
        QV4::Runtime::BinaryOperation alu;
        Param lhs;
        Param rhs;
        Param result;
    };
    struct instr_add {
        MOTH_INSTR_HEADER
        Param lhs;
        Param rhs;
        Param result;
    };
    struct instr_bitAnd {
        MOTH_INSTR_HEADER
        Param lhs;
        Param rhs;
        Param result;
    };
    struct instr_bitOr {
        MOTH_INSTR_HEADER
        Param lhs;
        Param rhs;
        Param result;
    };
    struct instr_bitXor {
        MOTH_INSTR_HEADER
        Param lhs;
        Param rhs;
        Param result;
    };
    struct instr_shr {
        MOTH_INSTR_HEADER
        Param lhs;
        Param rhs;
        Param result;
    };
    struct instr_shl {
        MOTH_INSTR_HEADER
        Param lhs;
        Param rhs;
        Param result;
    };
    struct instr_bitAndConst {
        MOTH_INSTR_HEADER
        Param lhs;
        int rhs;
        Param result;
    };
    struct instr_bitOrConst {
        MOTH_INSTR_HEADER
        Param lhs;
        int rhs;
        Param result;
    };
    struct instr_bitXorConst {
        MOTH_INSTR_HEADER
        Param lhs;
        int rhs;
        Param result;
    };
    struct instr_shrConst {
        MOTH_INSTR_HEADER
        Param lhs;
        int rhs;
        Param result;
    };
    struct instr_shlConst {
        MOTH_INSTR_HEADER
        Param lhs;
        int rhs;
        Param result;
    };
    struct instr_mul {
        MOTH_INSTR_HEADER
        Param lhs;
        Param rhs;
        Param result;
    };
    struct instr_sub {
        MOTH_INSTR_HEADER
        Param lhs;
        Param rhs;
        Param result;
    };
    struct instr_binopContext {
        MOTH_INSTR_HEADER
        QV4::Runtime::BinaryOperationContext alu;
        Param lhs;
        Param rhs;
        Param result;
    };
    struct instr_loadThis {
        MOTH_INSTR_HEADER
        Param result;
    };
    struct instr_loadQmlIdArray {
        MOTH_INSTR_HEADER
        Param result;
    };
    struct instr_loadQmlImportedScripts {
        MOTH_INSTR_HEADER
        Param result;
    };
    struct instr_loadQmlContextObject {
        MOTH_INSTR_HEADER
        Param result;
    };
    struct instr_loadQmlScopeObject {
        MOTH_INSTR_HEADER
        Param result;
    };
    struct instr_loadQmlSingleton {
        MOTH_INSTR_HEADER
        Param result;
        int name;
    };

    instr_common common;
    instr_ret ret;
    instr_line line;
    instr_debug debug;
    instr_loadRuntimeString loadRuntimeString;
    instr_loadRegExp loadRegExp;
    instr_move move;
    instr_moveConst moveConst;
    instr_swapTemps swapTemps;
    instr_loadClosure loadClosure;
    instr_loadName loadName;
    instr_getGlobalLookup getGlobalLookup;
    instr_storeName storeName;
    instr_loadElement loadElement;
    instr_loadElementLookup loadElementLookup;
    instr_storeElement storeElement;
    instr_storeElementLookup storeElementLookup;
    instr_loadProperty loadProperty;
    instr_getLookup getLookup;
    instr_loadQObjectProperty loadQObjectProperty;
    instr_loadAttachedQObjectProperty loadAttachedQObjectProperty;
    instr_storeProperty storeProperty;
    instr_setLookup setLookup;
    instr_storeQObjectProperty storeQObjectProperty;
    instr_push push;
    instr_callValue callValue;
    instr_callProperty callProperty;
    instr_callPropertyLookup callPropertyLookup;
    instr_callElement callElement;
    instr_callActivationProperty callActivationProperty;
    instr_callGlobalLookup callGlobalLookup;
    instr_callBuiltinThrow callBuiltinThrow;
    instr_setExceptionHandler setExceptionHandler;
    instr_callBuiltinUnwindException callBuiltinUnwindException;
    instr_callBuiltinPushCatchScope callBuiltinPushCatchScope;
    instr_callBuiltinPushScope callBuiltinPushScope;
    instr_callBuiltinPopScope callBuiltinPopScope;
    instr_callBuiltinForeachIteratorObject callBuiltinForeachIteratorObject;
    instr_callBuiltinForeachNextPropertyName callBuiltinForeachNextPropertyName;
    instr_callBuiltinDeleteMember callBuiltinDeleteMember;
    instr_callBuiltinDeleteSubscript callBuiltinDeleteSubscript;
    instr_callBuiltinDeleteName callBuiltinDeleteName;
    instr_callBuiltinTypeofMember callBuiltinTypeofMember;
    instr_callBuiltinTypeofSubscript callBuiltinTypeofSubscript;
    instr_callBuiltinTypeofName callBuiltinTypeofName;
    instr_callBuiltinTypeofValue callBuiltinTypeofValue;
    instr_callBuiltinDeclareVar callBuiltinDeclareVar;
    instr_callBuiltinDefineArray callBuiltinDefineArray;
    instr_callBuiltinDefineObjectLiteral callBuiltinDefineObjectLiteral;
    instr_callBuiltinSetupArgumentsObject callBuiltinSetupArgumentsObject;
    instr_callBuiltinConvertThisToObject callBuiltinConvertThisToObject;
    instr_createValue createValue;
    instr_createProperty createProperty;
    instr_constructPropertyLookup constructPropertyLookup;
    instr_createActivationProperty createActivationProperty;
    instr_constructGlobalLookup constructGlobalLookup;
    instr_jump jump;
    instr_jumpEq jumpEq;
    instr_jumpNe jumpNe;
    instr_unot unot;
    instr_unotBool unotBool;
    instr_uplus uplus;
    instr_uminus uminus;
    instr_ucompl ucompl;
    instr_ucomplInt ucomplInt;
    instr_increment increment;
    instr_decrement decrement;
    instr_binop binop;
    instr_add add;
    instr_bitAnd bitAnd;
    instr_bitOr bitOr;
    instr_bitXor bitXor;
    instr_shr shr;
    instr_shl shl;
    instr_bitAndConst bitAndConst;
    instr_bitOrConst bitOrConst;
    instr_bitXorConst bitXorConst;
    instr_shrConst shrConst;
    instr_shlConst shlConst;
    instr_mul mul;
    instr_sub sub;
    instr_binopContext binopContext;
    instr_loadThis loadThis;
    instr_loadQmlIdArray loadQmlIdArray;
    instr_loadQmlImportedScripts loadQmlImportedScripts;
    instr_loadQmlContextObject loadQmlContextObject;
    instr_loadQmlScopeObject loadQmlScopeObject;
    instr_loadQmlSingleton loadQmlSingleton;

    static int size(Type type);
};

template<int N>
struct InstrMeta {
};

#define MOTH_INSTR_META_TEMPLATE(I, FMT) \
    template<> struct InstrMeta<(int)Instr::I> { \
        enum { Size = MOTH_INSTR_SIZE(I, FMT) }; \
        typedef Instr::instr_##FMT DataType; \
        static const DataType &data(const Instr &instr) { return instr.FMT; } \
        static void setData(Instr &instr, const DataType &v) { instr.FMT = v; } \
        static void setDataNoCommon(Instr &instr, const DataType &v) \
        { memcpy(reinterpret_cast<char *>(&instr.FMT) + sizeof(Instr::instr_common), \
                 reinterpret_cast<const char *>(&v) + sizeof(Instr::instr_common), \
                 Size - sizeof(Instr::instr_common)); } \
    };
FOR_EACH_MOTH_INSTR(MOTH_INSTR_META_TEMPLATE);
#undef MOTH_INSTR_META_TEMPLATE

template<int InstrType>
class InstrData : public InstrMeta<InstrType>::DataType
{
};

} // namespace Moth
} // namespace QV4

QT_END_NAMESPACE

#endif // QV4INSTR_MOTH_P_H
