error.h

linux 下用c++ 开发的一个小型数据库系统

#ifndef ERROR_H
#define ERROR_H

// error/status codes defined here

// add error codes under appropriate heading
// -- remember to add corresponding message to
//    Error.print() also!

enum Status {

// no error

       OK = 0, NOTUSED1 = -999,

// File and DB errors

       BADFILEPTR, BADFILE, FILETABFULL, FILEOPEN, FILENOTOPEN,
       UNIXERR, BADPAGEPTR, BADPAGENO, FILEEXISTS,

// BufMgr and HashTable errors

       HASHTBLERROR, HASHNOTFOUND, BUFFEREXCEEDED, PAGENOTPINNED,
       BADBUFFER, PAGEPINNED,

// Page errors
	
       NOSPACE,  NORECORDS,  ENDOFPAGE, INVALIDSLOTNO, INVALIDRECLEN,

// HeapFile errors

       BADRID, BADRECPTR, BADSCANPARM, BADSCANID, SCANTABFULL, FILEEOF, FILEHDRFULL,

// Index errors
 
       BADINDEXPARM, RECNOTFOUND, BUCKETFULL, DIROVERFLOW, 
       NONUNIQUEENTRY, NOMORERECS,

// SortedFile errors
 
       BADSORTPARM, INSUFMEM, 
	
// Catalog errors

       BADCATPARM, RELNOTFOUND, ATTRNOTFOUND,
       NAMETOOLONG, DUPLATTR, RELEXISTS, NOINDEX,
       INDEXEXISTS, ATTRTOOLONG,

// Utility errors
       
// Query errors

       ATTRTYPEMISMATCH, TMP_RES_EXISTS,
       
       DIFBTWOP, ATTRXT,

// do not touch filler -- add codes before it

       NOTUSED2
};


// definition of Error class

class Error {
 public:
  void print(Status status);
};


#define ASSERT(c)  { if (!(c)) { \
		       cerr << "At line " << __LINE__ << ":" << endl << "  "; \
                       cerr << "This condition should hold: " #c << endl; \
                       exit(1); \
		     } \
                   }

#endif