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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QV4IR_P_H
#define QV4IR_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qv4function_p.h>
#include <QtCore/qjsondocument.h>
QT_REQUIRE_CONFIG(qml_tracing);
QT_BEGIN_NAMESPACE
namespace QV4 {
namespace IR {
class Dumper;
class Graph;
class Node;
class NodeInfo;
class Function
{
Q_DISABLE_COPY_MOVE(Function)
public:
Function(QV4::Function *qv4Function);
~Function();
void verify() const;
QV4::Function *v4Function() const
{ return qv4Function; }
QString name() const;
QQmlJS::MemoryPool *pool()
{ return &m_pool; }
Graph *graph() const
{ return m_graph; }
void dump(const QString &description) const;
void dump() const; // for calling in the debugger
Dumper *dumper() const;
using StringId = size_t;
StringId addString(const QString &s);
QString string(StringId id) const
{ return m_stringPool[id]; }
NodeInfo *nodeInfo(Node *n, bool createIfNecessary = true) const;
void copyBytecodeOffsets(Node *from, Node *to);
void addUnwindLabelOffset(int absoluteOffset)
{ m_unwindLabelOffsets.push_back(absoluteOffset); }
const std::vector<int> &unwindLabelOffsets() const
{ return m_unwindLabelOffsets; }
private:
QV4::Function *qv4Function;
mutable QQmlJS::MemoryPool m_pool;
Graph *m_graph;
mutable Dumper *m_dumper;
std::vector<QString> m_stringPool;
mutable std::vector<NodeInfo *> m_nodeInfo; //### move the into the _pool
std::vector<int> m_unwindLabelOffsets;
};
class Dumper
{
Q_DISABLE_COPY_MOVE(Dumper)
public:
Dumper(const Function *f);
~Dumper() = default;
static void dump(const Function *f, const QString &description);
static void dot(const Function *f, const QString &description);
private:
QByteArray dump(const Function *f);
QJsonValue dump(const Node *node, const Function *f);
private:
QJsonDocument m_doc;
};
class Type
{
// None is for nodes with no type (e.g. a Return)
// The others form a lattice:
// Any -> Object -> Invalid
// ^^^ -> Number -> Integral -> Int32 -> ^^^^^^^
// ^^^ -> Number -> Integral -> UInt32 -> ^^^^^^^
// ^^^ -> Number -> Integral -> Bool -> ^^^^^^^
// ^^^ -> Number -> Double -> ^^^^^^^
// ^^^ -> Undefined -> ^^^^^^^
// ^^^ -> Null -> ^^^^^^^
// ^^^ -> Empty -> ^^^^^^^
enum InternalType: int16_t {
None = 0,
Object = 1 << 0,
Bool = 1 << 1,
Int32 = 1 << 2,
UInt32 = 1 << 3,
Double = 1 << 4,
Undefined = 1 << 5,
Null = 1 << 6,
Empty = 1 << 7,
RawPointer = 1 << 8,
Invalid = -1,
Integral = Int32 | UInt32 | Bool,
Number = Integral | Double,
Any = Object | Number | Undefined | Empty | Null,
};
Type(InternalType t) : m_t(t) {}
public:
Type() = default;
bool operator==(const Type &other) const
{ return m_t == other.m_t; }
static Type noneType() { return Type(None); }
static Type anyType() { return Type(Any); }
static Type undefinedType() { return Type(Undefined); }
static Type emptyType() { return Type(Empty); }
static Type booleanType() { return Type(Bool); }
static Type int32Type() { return Type(Int32); }
static Type doubleType() { return Type(Double); }
static Type numberType() { return Type(Number); }
static Type nullType() { return Type(Null); }
static Type objectType() { return Type(Object); }
static Type rawPointerType() { return Type(RawPointer); }
bool isAny() const { return m_t == Any; }
bool isBoolean() const { return m_t == Bool; }
bool isInt32() const { return m_t == Int32; }
bool isInvalid() const { return m_t == Invalid; }
bool isNone() const { return m_t == None; }
bool isDouble() const { return m_t == Double; }
bool isUndefined() const { return m_t == Undefined; }
bool isNull() const { return m_t == Null; }
bool isEmpty() const { return m_t == Empty; }
bool isObject() const { return m_t == Object; }
bool isRawPointer() const { return m_t == RawPointer; }
bool isIntegral() const { return matches(Integral); }
bool isNumber() const { return matches(Number); }
Type operator|(Type other) const
{ return Type(InternalType(int16_t(m_t) | int16_t(other.m_t))); }
Type &operator|=(Type other)
{
m_t = (InternalType(int16_t(m_t) | int16_t(other.m_t)));
return *this;
}
QString debugString() const;
private:
bool matches(InternalType it) const
{
return (m_t & ~it) == 0 && (m_t & it) != 0;
}
private:
InternalType m_t = None;
};
} // namespace IR
} // namespace QV4
QT_END_NAMESPACE
#endif // QV4IR_P_H
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