| /* %%%%%%%%%%%%%%%%%%%% (c) William Landi 1991 %%%%%%%%%%%%%%%%%%%%%%%%%%%% */ |
| /* Permission to use this code is granted as long as the copyright */ |
| /* notice remains in place. */ |
| /* =============================== scan_line.h ============================= */ |
| /* Contains routines for doing simple parsing of source program (eg. return */ |
| /* label, operator and everthing after the operator). */ |
| |
| /* pass_type Which pass the assembler is currently in. Used to */ |
| /* surpress redisplaying pass1 error messages in */ |
| /* pass2. */ |
| enum pass_type {pass1,pass2}; |
| |
| /* ------------------------------ IS_BLANK_OR_TAB -------------------------- */ |
| /* 1 parameter: */ |
| /* 1) char CH; Character in question. */ |
| /* True if CH is a blank or a tab, otherwise false. */ |
| extern int IS_BLANK_OR_TAB(); |
| |
| /* ----------------------------- eoln -------------------------------------- */ |
| /* 1 parameter: */ |
| /* 1) char CH; Character in question. */ |
| /* true if CH is the End Of LiNe character, otherwise false. */ |
| extern int eoln(); |
| |
| /* -------------------------------- GET_LABEL ------------------------------ */ |
| /* 4 parameters: */ |
| /* 1) char *LABEL; Where to put the label if found. */ |
| /* 2) char *INPUT; String to get the label from. */ |
| /* 3) enum pass_type PASS; pass1 = buffers error messages in ERROR_REC_BUF*/ |
| /* pass2 = don't buffer error messages. */ |
| /* 4) char **NEXT_CHAR; where to start looking for the label in INPUT */ |
| /* Get a SIC/XE Label (Letter followeb by zero to seven letters or digits). */ |
| /* Return it in LABEL. Get it from INPUT starting from NEXT_CHAR. */ |
| extern void GET_LABEL(); |
| |
| /* ---------------------------- SCAN_LINE ---------------------------------- */ |
| /* 9 parameters: */ |
| /* 1) int LOCATION_COUNTER; SIC/XE location counter at start of line*/ |
| /* 2) char **INPUT_LINE; Where to return the source line */ |
| /* 3) char *LABEL; Where to return the label if one exists */ |
| /* 4) int *EXTENDED; Boolean: Is there a '+' before the */ |
| /* operator. i.e. is this extended format*/ |
| /* 5) char *OPERATOR; Where to return the operator. */ |
| /* 6) char **REST; Where to return everything after the */ |
| /* operator. Ignoring leading white-space*/ |
| /* 7) enum pass_type PASS; pass1 = do print error messages and */ |
| /* source; pass2 = do not print error */ |
| /* messages. */ |
| /* 8) FILE *STREAM; Stream for outputing error messages and */ |
| /* the source code */ |
| /* 9) FILE *INPUT_STREAM; Where to get the source line from */ |
| /* Reads in a sourse program line and does simple parsing. */ |
| extern void SCAN_LINE(); |
