Question

I am currently writing a token recognizer for XML. I am going along the basis of FSA’s to do so. So I have a Header file that has the following code…

#define MAX_LENGTH    512
#define  MAX_NAME  25

struct token 
{
  char name[MAX_NAME + 1];
  int type;
  unsigned char str[MAX_LENGTH + 1];
 };

 #define TOKEN_TYPES 8

 #define SPACES  0
 #define NEWLINE  1
 #define WORD  2
 #define BEGINTAG  3
 #define ENDTAG  4
 #define EMPTYTAG 5
 #define ERROR 6
 #define ENDFILE 7

With this I am getting the error:

error C2011: 'token' : 'struct' type redefinition

I am also getting another strange error in my gettoken.cpp file. Where I actually implement the FSA. The File is far to long to display the entire contents. But with this I am getting the error…

error C1014: too many include files : depth = 1024

And here is part of the code for that .cpp file. I will only include my imports in this.

#include  <iostream>
#include  <fstream>
#include  <stdlib.h>
#include  <string>
#include  "Token.h"

using namespace std;

I am sure it is something silly as it usually is for me. But please help me out! Thanks!

Answer 1

I assume you’re somehow including your header file twice. Do you have a guard against that? Every header file should have this:

#ifndef TOKEN_H
#define TOKEN_H

[your header file code]

#endif

If that’s not it, make sure you’re not defining token twice somewhere else.