compilecode.h

我的简易编译器终于在花了近20个工作日后完成了。按照设计是做成一个FormulaEx.dll

// CompileCode.h: interface for the CCompileCode class.
//
//////////////////////////////////////////////////////////////////////
/*
 * Generated by MyEclipse Struts
 * 
 * Written by Yang Huaisheng 
 * Homepage: http://codefan.spaces.live.com
 * version 0.01
 * create at 2006-04-30
 * 
 *  Distribute freely, except: don't remove my name from the source or
 *  documentation (don't take credit for my work), mark your changes (don't
 *  get me blamed for your possible bugs), don't alter or remove this
 *  notice.
 *  No warrantee of any kind, express or implied, is included with this
 *  software; use at your own risk, responsibility for damages (if any) to
 *  anyone resulting from the use of this software rests entirely with the
 *  user.
 * 
 *  Send bug reports, bug fixes, enhancements, requests, flames, etc. to
 *     [e-mail]
 *  
 */

#if !defined(AFX_COMPILECODE_H__8F03A546_4220_4BEE_B6BB_DCEB50A0BD45__INCLUDED_)
#define AFX_COMPILECODE_H__8F03A546_4220_4BEE_B6BB_DCEB50A0BD45__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#include "..\Interface\ConstDef.h"
#include "FormulaModula.h"
//#include "CommonDataDef.h"

class CSZGetWord 
{
public:
	CSZGetWord();
	virtual ~CSZGetWord();
private:
	LPCTSTR m_szSource;
	int		m_nSourceLen;
	int		m_nCmpPos;

	int		m_nCurLine;
	int		m_nCurLineBeginPos;
private:
	inline	void NewLine();
	void	TrimSpace();
	void	TrimComment();
public:
	BOOL    m_bAcceptOpt;
	inline int	GetCurPos();//{return m_nCmpPos;}
	inline int  GetCurLine();
	inline int  GetCurPosInLine();
	inline bool IsEnd();// {return m_nCmpPos>=m_nSourceLen;}
//	inline void SetPreword(LPCTSTR preWord);//{m_preWord = preWord; m_bIsBack = true;}
	void Reset();// {m_nCmpPos=0;}
	void SetSource(LPCTSTR szSou, int nL=-1);
	CString GetAWord();
};

struct SJMPChain{
	int SEN_TYPE;//				RES_WHILE RES_FOR RES_SWITCH
	int nBegChain; // CONTINUE		*		*		
	int nEndChain; // BREAK   		*		*		*     
};
typedef SJMPChain * PJMPCHAIN;

class CChainStack  
{
public:
	CChainStack();
	virtual ~CChainStack();
private:
	int m_nDept;
	CArray<SJMPChain,SJMPChain&> m_Stack;
public:
	int GetDept();
	void Push(SJMPChain & SC);
	SJMPChain Pop();
	PJMPCHAIN GetTop();
	PJMPCHAIN GetTopLoopChain();
	void Clear();
	BOOL IsEmpty();
};

class CCompileCode  
{
public:
	CCompileCode();
	virtual ~CCompileCode();
private:
	CString			m_sCurWord;
	WORD_TYPE		m_CurWT;
	int				m_nCurISN;

	BOOL	m_bIsBack;
	CSZGetWord   m_SourceCode;
	PFORMUALMODULE m_pFormulaModula;
	CChainStack		m_JMPChain;
private:
	CStringList  m_slErrorMsgs;
private:
	void Reset();
	void RaiseWarning(LPCTSTR sMsg);
	void RaiseError(LPCTSTR sMsg);
	void WordMissing(LPCTSTR sWord);
	void WordRedefined(LPCTSTR sWord);

	int	 Advance();
	void BackOff();

	int	 IsSeparator(LPCTSTR sWord);
	int	 IsOperator (LPCTSTR sWord);
	int	 IsEvaluate (LPCTSTR sWord);
	int	 IsResKey(LPCTSTR sWord);
	int	 IsSysFunc(LPCTSTR sWord);

	int	 IsModule(LPCTSTR sWord);

	int  GenFormula(int nOpt,int nResult,int nPrm = 0,int nPrm2=0);
	void FillJmpChain(int nChain, int nJMPP = -1);
	BOOL CmpSentence();
	BOOL CmpSingleSentence();//int nSignISN);
	BOOL CmpMultiSentence();
	void CmpIfElseSen();
	void CmpForSen();
	void CmpWhileSen();
	void CmpSignDef();
	void CmpFuncDef();

	void CmpSwitchSen();
	void CmpReturn();
	int  CmpPushParameter();
	int  CmpCallSysFunc();
	int  CmpCallModule(int nRet=ISN_EMPTY);
	int  CmpFormula();
	int  CmpItem();

public:
	void SetFormulaModule(PFORMUALMODULE pFM);
	int  Compile();
	void ClearError();
	int	 GetErrorSum();
	CString GetErrorDesc(int nInd);
	
};

#endif // !defined(AFX_COMPILECODE_H__8F03A546_4220_4BEE_B6BB_DCEB50A0BD45__INCLUDED_)