src/mp-equation-private.h

   1 /*  Copyright (c) 2004-2008 Sami Pietila
   2  *  Copyright (c) 2008-2009 Robert Ancell
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2, or (at your option)
   7  *  any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful, but
  10  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12  *  General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  17  *  02111-1307, USA.
  18  */
  19
  20 #ifndef MP_EQUATION_PRIVATE_H
  21 #define MP_EQUATION_PRIVATE_H
  22
  23 #include "mp-equation.h"
  24
  25 typedef struct MPEquationParserState MPEquationParserState;
  26
  27 /* State for parser */
  28 struct MPEquationParserState {
  29     /* User provided options */
  30     MPEquationOptions *options;
  31
  32     /* Function to check if a variable is defined */
  33     int (*variable_is_defined)(MPEquationParserState *state, const char *name);
  34
  35     /* Function to get variable values */
  36     int (*get_variable)(MPEquationParserState *state, const char *name, MPNumber *z);
  37
  38     /* Function to set variable values */
  39     void (*set_variable)(MPEquationParserState *state, const char *name, const MPNumber *x);
  40
  41     /* Function to check if a function is defined */
  42     int (*function_is_defined)(MPEquationParserState *state, const char *name);
  43
  44     /* Function to solve functions */
  45     int (*get_function)(MPEquationParserState *state, const char *name, const MPNumber *x, MPNumber *z);
  46
  47     /* Function to convert units */
  48     int (*convert)(MPEquationParserState *state, const MPNumber *x, const char *x_units, const char *z_units, MPNumber *z);
  49
  50     // FIXME: get_operator??
  51
  52     /* Error returned from parser */
  53     int error;
  54
  55     /* Name of token where error occured */
  56     char *error_token;
  57
  58     /* Value returned from parser */
  59     MPNumber ret;
  60 };
  61
  62 int _mp_equation_error(void *yylloc, MPEquationParserState *state, char *text);
  63
  64 #endif