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/*****************************************************************************
*
* Copyright (c) 2000 - 2017, Lawrence Livermore National Security, LLC
* Produced at the Lawrence Livermore National Laboratory
* LLNL-CODE-442911
* 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 PARSING_EXPR_LIST_H
#define PARSING_EXPR_LIST_H
#include <expr_exports.h>
#include <Expression.h>
#include <ExpressionList.h>
#include <SimpleObserver.h>
#include <VisItParser.h>
#include <string>
// Forward declarations.
class ExprNode;
// ****************************************************************************
// Class: ParsingExprList
//
// Purpose:
// This class contains a list of expressions, and the ability to parse them.
//
// Notes:
//
// Programmer: Sean Ahern
// Creation: Tue Sep 25 14:17:12 PDT 2001
//
// Modifications:
// Jeremy Meredith, Fri Aug 15 11:33:25 PDT 2003
// Added a new form of GetExpressionTree that takes an Expression.
//
// Jeremy Meredith, Wed Nov 24 12:27:15 PST 2004
// Refactored and changed parse tree classes around.
//
// Jeremy Meredith, Tue Dec 14 14:09:51 PST 2004
// I added code to get the first real (database, non-expression) variable
// for a given variable (which may or may not be an expression).
//
// Hank Childs, Mon Jan 8 10:35:38 PST 2007
// Added GetExpressionTypeFromAVT.
//
// Brad Whitlock, Tue Jan 20 15:49:56 PST 2009
// I removed some methods that caused AVT to bleed into this library.
//
// ****************************************************************************
class EXPR_API ParsingExprList : public SimpleObserver
{
public:
ParsingExprList();
ParsingExprList(Parser *p);
~ParsingExprList();
static ParsingExprList *Instance();
static Expression* GetExpression(const char *varname);
static Expression* GetExpression(std::string varname)
{ return GetExpression(varname.c_str()); }
ExpressionList *GetList() {return &exprList;}
virtual void Update(Subject *);
static ExprNode *GetExpressionTree(Expression*);
static ExprNode *GetExpressionTree(const char *varname);
static ExprNode *GetExpressionTree(std::string varname)
{ return GetExpressionTree(varname.c_str()); }
static std::string GetRealVariable(const std::string &var);
protected:
Parser* GetParser() { return parser; }
private:
ExpressionList exprList;
Parser *parser;
static ParsingExprList *instance;
};
#endif
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