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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** 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 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
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#pragma once
#include "pythonformattoken.h"
#include <QString>
namespace Python {
namespace Internal {
/**
* @brief The Scanner class - scans source code for highlighting only
*/
class Scanner
{
public:
Scanner(const Scanner &other) = delete;
void operator=(const Scanner &other) = delete;
enum State {
State_Default,
State_String,
State_MultiLineString
};
Scanner(const QChar *text, const int length);
void setState(int state);
int state() const;
FormatToken read();
QString value(const FormatToken& tk) const;
private:
FormatToken onDefaultState();
void checkEscapeSequence(QChar quoteChar);
FormatToken readStringLiteral(QChar quoteChar);
FormatToken readMultiLineStringLiteral(QChar quoteChar);
FormatToken readIdentifier();
FormatToken readNumber();
FormatToken readFloatNumber();
FormatToken readComment();
FormatToken readDoxygenComment();
FormatToken readWhiteSpace();
FormatToken readOperator();
FormatToken readBrace(bool isOpening);
void clearState();
void saveState(State state, QChar savedData);
void parseState(State &state, QChar &savedData) const;
void setAnchor() { m_markedPosition = m_position; }
void move() { ++m_position; }
int length() const { return m_position - m_markedPosition; }
int anchor() const { return m_markedPosition; }
bool isEnd() const { return m_position >= m_textLength; }
QChar peek(int offset = 0) const
{
int pos = m_position + offset;
if (pos >= m_textLength)
return QLatin1Char('\0');
return m_text[pos];
}
const QChar *m_text;
const int m_textLength;
int m_position = 0;
int m_markedPosition = 0;
int m_state;
};
} // namespace Internal
} // namespace Python
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