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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of jom.
**
** 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.
**
****************************************************************************/
#ifndef PREPROCESSOR_H
#define PREPROCESSOR_H
#include <QRegExp>
#include <QStack>
#include <QStringList>
class PPExprParser;
namespace NMakeFile {
class MacroTable;
class MakefileLineReader;
class Preprocessor
{
public:
Preprocessor();
~Preprocessor();
void setMacroTable(MacroTable* macroTable);
MacroTable* macroTable() { return m_macroTable; }
bool openFile(const QString& filename);
QString readLine();
uint lineNumber() const;
QString currentFileName() const;
int evaluateExpression(const QString& expr);
bool isInlineFileMode() const { return m_bInlineFileMode; }
void setInlineFileModeEnabled(bool enabled) { m_bInlineFileMode = enabled; }
static void removeInlineComments(QString& line);
private:
bool internalOpenFile(QString fileName);
void basicReadLine(QString& line);
bool parseMacro(const QString& line);
bool parsePreprocessingDirective(const QString& line);
QString findIncludeFile(const QString &filePathToInclude);
bool isPreprocessingDirective(const QString& line, QString& directive, QString& value);
void skipUntilNextMatchingConditional();
void error(const QString& msg);
void enterConditional(bool followElseBranch);
void exitConditional();
int conditionalDepth() { return m_conditionalStack.count(); }
private:
struct TextFile
{
MakefileLineReader* reader;
QString fileDirectory;
TextFile()
: reader(0)
{}
TextFile(const TextFile& rhs)
: reader(rhs.reader), fileDirectory(rhs.fileDirectory)
{}
TextFile& operator=(const TextFile& rhs)
{
reader = rhs.reader;
fileDirectory = rhs.fileDirectory;
return *this;
}
};
QStack<TextFile> m_fileStack;
MacroTable* m_macroTable;
QRegExp m_rexPreprocessingDirective;
QStack<bool> m_conditionalStack;
PPExprParser* m_expressionParser;
QStringList m_linesPutBack;
bool m_bInlineFileMode;
};
} //namespace NMakeFile
#endif // PREPROCESSOR_H
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