95 lines
2.6 KiB
C++
95 lines
2.6 KiB
C++
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/**
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* projectM -- Milkdrop-esque visualisation SDK
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* Copyright (C)2003-2007 projectM Team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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* See 'LICENSE.txt' included within this release
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*
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*/
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/**
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* $Id$
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*
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* Expression evaluators
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*
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* $Log$
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*/
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/* Eval.hpp: evaluation functions of expressions */
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#ifndef __EVAL_H
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#define __EVAL_H
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#include "fatal.h"
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//#include "projectM.hpp"
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#include "Func.hpp"
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#include "Param.hpp"
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#define EVAL_DEBUG 0
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//#define EVAL_DEBUG_DOUBLE 2
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#define VAL_T 1
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#define PREFUN_T 3
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#define TREE_T 4
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#define NONE_T 0
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#define CONSTANT_TERM_T 0
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#define PARAM_TERM_T 1
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#define INFIX_ADD 0
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#define INFIX_MINUS 1
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#define INFIX_MOD 2
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#define INFIX_DIV 3
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#define INFIX_MULT 4
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#define INFIX_OR 5
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#define INFIX_AND 6
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class DLLEXPORT InfixOp;
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class Eval {
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public:
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static InfixOp *infix_add,
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*infix_minus,
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*infix_div,
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*infix_mult,
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*infix_or,
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*infix_and,
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*infix_mod,
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*infix_negative,
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*infix_positive;
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float eval_gen_expr(GenExpr * gen_expr);
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inline GenExpr * opt_gen_expr(GenExpr * gen_expr, int ** param_list);
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GenExpr * const_to_expr(float val);
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GenExpr * param_to_expr(Param * param);
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GenExpr * prefun_to_expr(float (*func_ptr)(), GenExpr ** expr_list, int num_args);
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static TreeExpr * new_tree_expr(InfixOp * infix_op, GenExpr * gen_expr, TreeExpr * left, TreeExpr * right);
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static GenExpr * new_gen_expr(int type, void * item);
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static ValExpr * new_val_expr(int type, Term *term);
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static InfixOp * new_infix_op(int type, int precedence);
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static int init_infix_ops();
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static int destroy_infix_ops();
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void reset_engine_vars();
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GenExpr * clone_gen_expr(GenExpr * gen_expr);
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TreeExpr * clone_tree_expr(TreeExpr * tree_expr);
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ValExpr * clone_val_expr(ValExpr * val_expr);
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PrefunExpr * clone_prefun_expr(PrefunExpr * prefun_expr);
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};
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#endif /** !_EVAL_H */
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