/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
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** accordance with the commercial license agreement provided with the
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
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#pragma once

#include <QByteArray>
#include <QSharedPointer>
#include <QStack>

namespace Debugger {
namespace Internal {
class NameDemanglerPrivate;
class ParseTreeNode;

class GlobalParseState
{
    friend class NameDemanglerPrivate;
public:
    char peek(int ahead = 0);
    char advance(int steps = 1);
    QByteArray readAhead(int charCount) const;

    int stackElementCount() const { return m_parseStack.count(); }
    QSharedPointer<ParseTreeNode> stackTop() const { return m_parseStack.top(); }
    QSharedPointer<ParseTreeNode> stackElementAt(int index) const { return m_parseStack.at(index); }
    void pushToStack(const QSharedPointer<ParseTreeNode> &node) { m_parseStack.push(node); }
    QSharedPointer<ParseTreeNode> popFromStack() { return m_parseStack.pop(); }

    int substitutionCount() const { return m_substitutions.count(); }
    QSharedPointer<ParseTreeNode> substitutionAt(int index) const { return m_substitutions.at(index); }
    void addSubstitution(const QSharedPointer<ParseTreeNode> &node);

    int templateParamCount() const { return m_templateParams.count(); }
    QSharedPointer<ParseTreeNode> templateParamAt(int index) const { return m_templateParams.at(index); }
    void addTemplateParam(const QSharedPointer<ParseTreeNode> &node) { m_templateParams << node; }
private:
    int m_pos;
    QByteArray m_mangledName;
    QList<QSharedPointer<ParseTreeNode> > m_substitutions;
    QList<QSharedPointer<ParseTreeNode> > m_templateParams;
    QStack<QSharedPointer<ParseTreeNode> > m_parseStack;

    static const char eoi = '$';
};

} // namespace Internal
} // namespace Debugger