src/mp-equation-private.h

   1 /*
   2  * Copyright (C) 2004-2008 Sami Pietila
   3  * Copyright (C) 2008-2009 Robert Ancell
   4  *
   5  * This program is free software: you can redistribute it and/or modify it under
   6  * the terms of the GNU General Public License as published by the Free Software
   7  * Foundation, either version 2 of the License, or (at your option) any later
   8  * version. See http://www.gnu.org/copyleft/gpl.html the full text of the
   9  * license.
  10  */
  11
  12 #ifndef MP_EQUATION_PRIVATE_H
  13 #define MP_EQUATION_PRIVATE_H
  14
  15 #include "mp-equation.h"
  16
  17 typedef struct MPEquationParserState MPEquationParserState;
  18
  19 /* State for parser */
  20 struct MPEquationParserState {
  21     /* User provided options */
  22     MPEquationOptions *options;
  23
  24     /* Function to check if a variable is defined */
  25     int (*variable_is_defined)(MPEquationParserState *state, const char *name);
  26
  27     /* Function to get variable values */
  28     int (*get_variable)(MPEquationParserState *state, const char *name, MPNumber *z);
  29
  30     /* Function to set variable values */
  31     void (*set_variable)(MPEquationParserState *state, const char *name, const MPNumber *x);
  32
  33     /* Function to check if a function is defined */
  34     int (*function_is_defined)(MPEquationParserState *state, const char *name);
  35
  36     /* Function to solve functions */
  37     int (*get_function)(MPEquationParserState *state, const char *name, const MPNumber *x, MPNumber *z);
  38
  39     /* Function to convert units */
  40     int (*convert)(MPEquationParserState *state, const MPNumber *x, const char *x_units, const char *z_units, MPNumber *z);
  41
  42     // FIXME: get_operator??
  43
  44     /* Error returned from parser */
  45     int error;
  46
  47     /* Name of token where error occured */
  48     char *error_token;
  49
  50     /* Value returned from parser */
  51     MPNumber ret;
  52 };
  53
  54 int _mp_equation_error(void *yylloc, MPEquationParserState *state, char *text);
  55
  56 #endif