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  1. /*
  2.         This file is part of "Filter Foundry", a filter plugin for Adobe Photoshop
  3.     Copyright (C) 2003-5 Toby Thain, toby@telegraphics.com.au
  4.  
  5.     This program is free software; you can redistribute it and/or modify
  6.     it under the terms of the GNU General Public License as published by  
  7.     the Free Software Foundation; either version 2 of the License, or
  8.     (at your option) any later version.
  9.  
  10.     This program is distributed in the hope that it will be useful,
  11.     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12.     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13.     GNU General Public License for more details.
  14.  
  15.     You should have received a copy of the GNU General Public License  
  16.     along with this program; if not, write to the Free Software
  17.     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18. */
  19.  
  20. #ifndef NODE_H
  21. #define NODE_H
  22.  
  23. #include "symtab.h"
  24.  
  25. enum{ MAXCHILDREN = 10 };
  26.  
  27. struct node{   
  28.         int kind;
  29.         struct node *child[MAXCHILDREN],*next;
  30.                 /* next is a link, used to track allocated nodes - see global node_list */
  31.         union{
  32.                 value_type value;
  33.                 struct sym_rec *sym;
  34.                 int specialvar;
  35.         } v;
  36. };
  37.  
  38. #undef YYSTYPE
  39. #define YYSTYPE struct node *
  40.  
  41. extern struct node *node_list;
  42.  
  43. struct node *newnode(int kind);
  44. //void freenodes(struct node *p);
  45. void freeallnodes();
  46.  
  47. void dumptree(struct node *root,int level);
  48. value_type eval(struct node *root);
  49. void freetree(struct node*);
  50. void checkvars(struct node*p,int varflags[],int *srcrad);
  51.  
  52. #endif
  53.