/*************************************
 * C02 Common Definitions & Routines *
 *************************************/

#define FNAMLEN 255       //Maximum File Name Length
#define LINELEN 255       //Maximum Input/Output Line Length
#define DEFLEN 6          //Maximum Definition Text Length
#define MAXDEF 255        //Maximum Number of Definitions
#define VARLEN 6          //Maximum Variable Length
#define MAXVAR 255        //Maximum Number of Variables
#define MAXFNS 16         //Maximum Functions in Stack
#define DATASPC 2048      //Space to Allocate for Variable Data
#define LABLEN 6          //Maximum Label Length
#define LABFMT "L_%04d"   //Label Format
#define LABSFX ":"        //Label Suffix
#define MAXLAB 15         //Maximum Number of Labels (Nesting Depth)

#define CPUOP  "PROCESSOR" //Target CPU Pseudo-Operator 
#define CPUARG "6502"      //Target CPU Operand
#define ORGOP  "ORG"       //Origin Pseudo-Op
#define EQUOP  "EQU"       //Equate Pseudo-Op
#define BYTEOP "DC"        //Define Byte Pseudo-Op
#define STROP  "DS"        //Define String Pseudo-Op
#define ALNOP  "ALIGN"     //Align Pseudo-Op

#define ASMFMT "%-7s %-3s %-12s %s\n"  //Assembly Language Line printf Format

/* Internal defines */
#define TRUE -1
#define FALSE 0

void prtpos();  //Print current file name and position
#define DEBUG(fmt, val) if (debug) {prtpos(); printf(fmt, val);}
#define DETAIL(fmt, val) if (debug) {printf(fmt, val);}
#define ERROR(fmt, val, err) if (debug) {fprintf(stderr, fmt, val);exterr(err);}

int debug;  //Print Debug Info (TRUE or FALSE)

int  gencmt;           //Generate Assembly Language Comments
char asmcmt[LINELEN];  //Processed Assembly Language Comment

int curcol, curlin;  //Position in Source Code
int savcol, savlin;  //Save Position in Source Code

int nxtchr; //Next Character of Source File to Process
int nxtupc; //Next Character Converted to Uppercase
int savchr; //Holds nxtchr when switching input files

char word[LINELEN];   //Word parsed from source file
char uword[LINELEN];  //Word converted too uppercase
char cmtasm[LINELEN]; //Assembly Language Comment Text

char incdir[FNAMLEN]; //Include File Directory
char inpnam[FNAMLEN]; //Include File Name 

int alcvar; //Allocate Variables Flag
int inblck; //Multiline Block Flag
int lsrtrn; //Last Statement was a Return
int fcase;  //First Case Statement  

void exterr(int errnum);        //Print current file name & position and exit
void expctd(char *expected);    //Print Expected message and exit

void addcmt(char *s);   //Append string to comment
void chrcmt(char c);    //Append character to comment
void setcmt(char *s);   //Set comment to string
#define SCMNT(str) if (gencmt) {setcmt(str);}
#define ACMNT(str) if (gencmt) {addcmt(str);}
#define CCMNT(chr) if (gencmt) {chrcmt(chr);}