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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.
**
****************************************************************************/
#include "ppexpr_grammar_p.h"
#include <QtCore>
namespace NMakeFile {
class MacroTable;
}
class PPExprParser : protected ppexpr_grammar
{
public:
PPExprParser();
~PPExprParser();
bool parse(const char* str);
int expressionValue()
{
return sym(1).num;
}
QByteArray errorMessage() const
{
return m_errorMessage;
}
void setMacroTable(NMakeFile::MacroTable* macroTable)
{
m_macroTable = macroTable;
}
protected:
struct Value
{
#ifdef _DEBUG
Value()
: num(0)
{}
#endif
union {
int num;
QByteArray* str;
};
};
protected:
int yylex();
inline void reallocateStack();
inline Value &sym(int index)
{ return sym_stack [tos + index - 1]; }
protected:
void* yyInputBuffer;
Value yylval;
int tos;
int stack_size;
Value *sym_stack;
int *state_stack;
NMakeFile::MacroTable* m_macroTable;
QByteArray m_errorMessage;
};
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