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/*****************************************************************************
*
* Copyright (c) 2000 - 2010, Lawrence Livermore National Security, LLC
* Produced at the Lawrence Livermore National Laboratory
* LLNL-CODE-400124
* All rights reserved.
*
* This file is part of VisIt. For details, see https://visit.llnl.gov/. The
* full copyright notice is contained in the file COPYRIGHT located at the root
* of the VisIt distribution or at http://www.llnl.gov/visit/copyright.html.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the disclaimer (as noted below) in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of the LLNS/LLNL nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL LAWRENCE LIVERMORE NATIONAL SECURITY,
* LLC, THE U.S. DEPARTMENT OF ENERGY OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
*****************************************************************************/
#ifndef EXPRPARSER_H
#define EXPRPARSER_H
#include <expr_exports.h>
#include <VisItParser.h>
#include <ExprScanner.h>
#include <string>
#include <ExprNode.h>
#include <ExprNodeFactory.h>
// ****************************************************************************
// Class: ExprParser
//
// Purpose:
// Implementation of a parser for the Expression grammar.
//
// Programmer: Jeremy Meredith
// Creation: April 5, 2002
//
// Modifications:
// Brad Whitlock, Fri Jun 28 15:20:36 PST 2002
// Changed the name of the base class.
//
// Jeremy Meredith, Mon Jul 28 16:54:47 PDT 2003
// Add the ability to set the error reporting message target to
// the console, the viewer error message mechanism, or neither.
//
// Jeremy Meredith, Fri Aug 15 09:25:04 PDT 2003
// Renamed EMT_VIEWER to EMT_COMPONENT and added EMT_EXCEPTION.
//
// Jeremy Meredith, Wed Nov 24 11:55:13 PST 2004
// Refactored. There's a new base class for the ExprParser and the
// return types became more general.
//
// Jeremy Meredith, Tue Dec 28 11:18:09 PST 2004
// Added the current parse text as a data member to help with macro
// support.
//
// ****************************************************************************
class EXPR_API ExprParser : public Parser
{
public:
ExprParser(ExprNodeFactory *f);
ParseTreeNode *Parse(const std::string &);
enum ErrorMessageTarget
{
EMT_NONE,
EMT_CONSOLE,
EMT_COMPONENT,
EMT_EXCEPTION
};
static void SetErrorMessageTarget(const ErrorMessageTarget emt)
{
errorMessageTarget = emt;
}
protected:
ParseTreeNode *ApplyRule(const Symbol&, const Rule*,
std::vector<ParseTreeNode*>&,
std::vector<Token*>&, Pos);
private:
std::string text; // the current parse text
ExprScanner scanner;
ExprNodeFactory *factory;
static ErrorMessageTarget errorMessageTarget;
};
#endif
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