equalcalc.h

图形软件,用QT编写的,可以用来学习软件的

/*****************************************************************************
*******************************************************************************
**                                                                           **
**    equal III the graphic builder                                          **
**                                                                           **
**    Copyright (C) 2003 Oleksiy Pylypenko                                   **
**                                                                           **
** This file may be distributed and/or modified under the terms of the       **
** GNU General Public License version 2 as published by the Free Software    **
** Foundation and appearing in the file license included in the              **
** packaging of this file.                                                   **
**                                                                           **
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE   **
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. **
**                                                                           **
** Contact [e-mail] if any conditions of this licensing are         **
** not clear to you.                                                         **
**                                                                           **
**                                                                           **
*******************************************************************************
 *****************************************************************************/

#ifndef _EQUALCALC_H_
#define _EQUALCALC_H_

#include "parser.h"
#include "fpu87.h"

class EqualCalculator{
public:
	ParsingContext acontext;
	vector<UserFunction> functions;
//	pti_vec builtTree;
	ExecutionContext execContext;
	x86_Executor executor;
public:
	class errDefineFunction{};

	EqualCalculator(void);
	~EqualCalculator();
	void Init(void);
	void Free(void);
	void DefineFunction(string name,vector<string> llist,vector<string> rlist,string definition,double priority);
	void DefineVariable(string name,double *ptr);
	
	pti_vec CompileSystem(string expression);
	double *PrepareCalculate(bPTI &atree);

	inline int Calculate(void){
		execContext.codes->execute();
		return execContext.codes->IsException();
	}
};

#endif// _EQUALCALC_H_


#ifndef _FPU_87_
#define _FPU_87_

#include "parser.h"
// some FPU instructions/


// RT errors(RT - RuntimeErrors)
class errNoHandlerInExcutingModel{};
class errNotEnoguhtArguments{};
class errVariableNotFound{};

class fpuArithmetic;
// x86 executor
// maybe it's better to call it x87 :-)
class x86_Executor : public FunctionExecutor{
	typedef void (*handlerFunction)(fpuArithmetic &myfpu);
	typedef map<string,handlerFunction> hendlersMap;
	hendlersMap hMap;
public:
	string GetHandlerName(const FunctionDeclaration &decl);
	string GetBHandlerName(const BracketDeclaration &decl);
	void AddHandler(char *name,int l,int r,handlerFunction func);
	void AddBHandler(char *name,handlerFunction func);
	x86_Executor();
	~x86_Executor();
	double Execute(const FunctionDeclaration &decl,stack<double> params);
	double Execute(const BracketDeclaration &decl,stack<double> params);
	void RBuild(const bPTI &bpti,ExecutionContext &context,fpuArithmetic &arith,stack<double *> &astack);
	double *Build(const bPTI &bpti,ExecutionContext &context);
};
/*
+ x87 executor
*/

#endif //_FPU_87_