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/**
 * @file    FormulaParser.h
 * @brief   Parses an SBML formula string into an AST.
 * @author  Ben Bornstein
 *
 * <!--------------------------------------------------------------------------
 * This file is part of libSBML.  Please visit http://sbml.org for more
 * information about SBML, and the latest version of libSBML.
 *
 * Copyright (C) 2013-2017 jointly by the following organizations:
 *     1. California Institute of Technology, Pasadena, CA, USA
 *     2. EMBL European Bioinformatics Institute (EMBL-EBI), Hinxton, UK
 *     3. University of Heidelberg, Heidelberg, Germany
 *
 * Copyright (C) 2009-2013 jointly by the following organizations:
 *     1. California Institute of Technology, Pasadena, CA, USA
 *     2. EMBL European Bioinformatics Institute (EMBL-EBI), Hinxton, UK
 *
 * Copyright (C) 2006-2008 by the California Institute of Technology,
 *     Pasadena, CA, USA
 *
 * Copyright (C) 2002-2005 jointly by the following organizations:
 *     1. California Institute of Technology, Pasadena, CA, USA
 *     2. Japan Science and Technology Agency, Japan
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation.  A copy of the license agreement is provided
 * in the file named "LICENSE.txt" included with this software distribution and
 * also available online as http://sbml.org/software/libsbml/license.html
 * ---------------------------------------------------------------------- -->*/

#ifndef FormulaParser_h
#define FormulaParser_h


#include <sbml/common/extern.h>
#include <sbml/util/Stack.h>

#include <sbml/math/ASTNode.h>
#include <sbml/math/FormulaTokenizer.h>

LIBSBML_CPP_NAMESPACE_BEGIN
BEGIN_C_DECLS


/**
 * Parses a text string as a mathematical formula and returns an AST
 * representation of it.
 *
 * @copydetails doc_summary_of_string_math
 *
 * @param formula the text-string formula expression to be parsed.
 *
 * @return the root node of the AST corresponding to the @p formula, or
 * @c NULL if an error occurred in parsing the formula
 *
 * @see @sbmlfunction{parseL3Formula, String}
 * @see @sbmlfunction{formulaToString, ASTNode}
 * @see @sbmlfunction{formulaToL3String, ASTNode}
 * @see @sbmlfunction{formulaToL3StringWithSettings, ASTNode\, L3ParserSettings}
 * @see @sbmlfunction{parseL3FormulaWithSettings, String\, L3ParserSettings}
 * @see @sbmlfunction{parseL3FormulaWithModel, String\, Model}
 * @see L3ParserSettings
 *
 * @copydetails doc_note_l3_parser_encouraged
 *
 * @copydetails doc_note_math_string_syntax
 *
 * @if conly
 * @memberof ASTNode_t
 * @endif
 */
LIBSBML_EXTERN
ASTNode_t *
SBML_parseFormula (const char *formula);


/** @cond doxygenLibsbmlInternal */
#ifndef SWIG


/**
 * @return the action for the current state and token.
 *
 * ACCEPT_STATE and ERROR_STATE are special and should be tested for first.
 *
 * Postive actions less-than represent shifts.  Negative actions greater
 * than represent reductions by a grammar rule.
 */
long
FormulaParser_getAction (long state, Token_t *token);

/**
 * @return the number of consective tokens in the Action[] table for the
 * given token type.
 *
 * This function is machine-generated.  DO NOT EDIT.
 */
long
FormulaParser_getActionLength (TokenType_t type);

/**
 * @return the starting offset into the Action[] table for the given token
 * type.
 *
 * This function is machine-generated.  DO NOT EDIT.
 */
long
FormulaParser_getActionOffset (TokenType_t type);

/**
 * @return the next (or goto) state for the current state and grammar rule.
 *
 * ERROR_STATE is special and should be tested for first.
 */
long
FormulaParser_getGoto (long state, long rule);

/**
 * Reduces the given stack (containing SLR parser states and ASTNodes) by
 * the given grammar rule.
 */
ASTNode_t *
FormulaParser_reduceStackByRule (Stack_t *stack, long rule);


#endif  /* !SWIG */

END_C_DECLS
LIBSBML_CPP_NAMESPACE_END
/** @endcond */

#endif  /* FormulaParser_h */