121 /**************************************/

   121 

   122 /* The name of the file being parsed. */

   122 /**********************************/

   123 /**************************************/

   123 /* Tell flex which file to parse. */

   124 /* The name of the file currently being parsed...

   124 /**********************************/

   125  * Note that flex accesses and updates this global variable

   125 /* This is a service that flex provides to bison... */

   126  * apropriately whenever it comes across an (*#include <filename> *)

   126 /* Tell flex which file to parse. This function will not imediately start parsing the file.

   127  * directive...

   127  * To parse the file, you then need to call yyparse()

   128  * ... and bison will use it when producing error messages.

   128  *

   129  * Note that bison also sets this variable correctly to the first

   129  * Returns -1 on error opening the file (and a valid errno), or 0 on success.

   130  * file being parsed.

   130  */

   131  */

   131 int parse_file(const char *filename);

   132 extern const char *current_filename;

   132 

   133 

   133 

   134 

   134 

   135 #define MAX_BUFFER_LENGTH 1000

   136 

   137 typedef struct {

   138     int eof;

   139     int lineNumber;

   140     int currentChar;

   141     int lineLength;

   142     int currentTokenStart;

   143     char* buffer;

   144     FILE *in_file;

   145   } tracking_t;

   146 

   147 int GetNextChar(char *b, int maxBuffer);

   148 tracking_t* GetNewTracking(FILE* in_file);