forked from qt-creator/qt-creator
144 lines
3.9 KiB
C++
144 lines
3.9 KiB
C++
/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt 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 Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#ifndef QMLJSINDENTER_H
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#define QMLJSINDENTER_H
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#include <qmljs/qmljs_global.h>
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#include <qmljs/qmljsscanner.h>
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#include <QtCore/QRegExp>
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#include <QtCore/QStringList>
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#include <QtGui/QTextBlock>
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namespace QmlJS {
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class QMLJS_EXPORT QmlJSIndenter
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{
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Q_DISABLE_COPY(QmlJSIndenter)
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public:
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QmlJSIndenter();
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~QmlJSIndenter();
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void setTabSize(int size);
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void setIndentSize(int size);
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int indentForBottomLine(QTextBlock firstBlock, QTextBlock lastBlock, QChar typedIn);
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QChar firstNonWhiteSpace(const QString &t) const;
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private:
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static const int SmallRoof;
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static const int BigRoof;
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bool isOnlyWhiteSpace(const QString &t) const;
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int columnForIndex(const QString &t, int index) const;
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int indentOfLine(const QString &t) const;
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QString trimmedCodeLine(const QString &t);
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void eraseChar(QString &t, int k, QChar ch) const;
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QChar lastParen() const;
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bool okay(QChar typedIn, QChar okayCh) const;
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/*
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The "linizer" is a group of functions and variables to iterate
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through the source code of the program to indent. The program is
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given as a list of strings, with the bottom line being the line
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to indent. The actual program might contain extra lines, but
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those are uninteresting and not passed over to us.
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*/
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bool readLine();
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void startLinizer();
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bool bottomLineStartsInMultilineComment();
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int indentWhenBottomLineStartsInMultiLineComment();
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bool matchBracelessControlStatement();
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bool isUnfinishedLine();
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bool isContinuationLine();
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int indentForContinuationLine();
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int indentForStandaloneLine();
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Token lastToken() const;
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QStringRef tokenText(const Token &token) const;
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private:
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int ppHardwareTabSize;
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int ppIndentSize;
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int ppContinuationIndentSize;
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int ppCommentOffset;
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private:
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struct LinizerState
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{
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LinizerState()
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: braceDepth(0),
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leftBraceFollows(false),
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pendingRightBrace(false)
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{ }
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int braceDepth;
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bool leftBraceFollows;
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bool pendingRightBrace;
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QString line;
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QList<Token> tokens;
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QTextBlock iter;
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};
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class Program
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{
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public:
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Program() {}
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Program(QTextBlock begin, QTextBlock end)
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: begin(begin), end(end) {}
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QTextBlock firstBlock() const { return begin; }
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QTextBlock lastBlock() const { return end; }
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private:
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QTextBlock begin, end;
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};
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Program yyProgram;
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LinizerState yyLinizerState;
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// shorthands
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const QString *yyLine;
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const int *yyBraceDepth;
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const bool *yyLeftBraceFollows;
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QRegExp label;
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QRegExp braceX;
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QRegExp iflikeKeyword;
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};
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} // namespace QmlJS
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#endif // QMLJSINDENTER_H
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