forked from qt-creator/qt-creator
1d2b27081a
BackwardScanner required more investigation and this is
the better fix than 413c66ec.
Change-Id: I651a7b416b549cc4a0e086873262d04409a7448e
Reviewed-by: Marco Bubke <marco.bubke@qt.io>
88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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****************************************************************************/
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#pragma once
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#include "SimpleLexer.h"
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#include <QTextBlock>
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QT_FORWARD_DECLARE_CLASS(QTextCursor)
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namespace CPlusPlus {
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class CPLUSPLUS_EXPORT BackwardsScanner
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{
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enum { MAX_BLOCK_COUNT = 10 };
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public:
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BackwardsScanner(const QTextCursor &cursor,
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const LanguageFeatures &languageFeatures,
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int maxBlockCount = MAX_BLOCK_COUNT,
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const QString &suffix = QString(),
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bool skipComments = true);
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int startToken() const;
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int startPosition() const;
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QString text() const;
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QString mid(int index) const;
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QString text(int index) const;
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QStringRef textRef(int index) const;
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// 1-based
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Token LA(int index) const;
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// n-la token is [startToken - n]
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Token operator[](int index) const; // ### deprecate
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QString indentationString(int index) const;
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int startOfLine(int index) const;
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int startOfMatchingBrace(int index) const;
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int startOfBlock(int index) const;
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int size() const;
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int offset() const;
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static int previousBlockState(const QTextBlock &block);
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private:
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const Token &fetchToken(int tokenIndex);
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private:
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Tokens _tokens;
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int _offset;
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int _blocksTokenized;
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QTextBlock _block;
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SimpleLexer _tokenize;
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QString _text;
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int _maxBlockCount;
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int _startToken;
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};
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} // namespace CPlusPlus
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