| | 1 | GOTO MAIN |
| | 2 | |
| | 3 | REM $INCLUDE: 'readline.in.bas' |
| | 4 | REM $INCLUDE: 'types.in.bas' |
| | 5 | REM $INCLUDE: 'reader.in.bas' |
| | 6 | REM $INCLUDE: 'printer.in.bas' |
| | 7 | |
| | 8 | REM $INCLUDE: 'debug.in.bas' |
| | 9 | |
| | 10 | REM READ(A$) -> R% |
| | 11 | MAL_READ: |
| | 12 | GOSUB READ_STR |
| | 13 | RETURN |
| | 14 | |
| | 15 | REM EVAL(A%, E%) -> R% |
| | 16 | EVAL: |
| | 17 | R%=A% |
| | 18 | RETURN |
| | 19 | |
| | 20 | REM PRINT(A%) -> R$ |
| | 21 | MAL_PRINT: |
| | 22 | AZ%=A%: PR%=1: GOSUB PR_STR |
| | 23 | RETURN |
| | 24 | |
| | 25 | REM REP(A$) -> R$ |
| | 26 | REP: |
| | 27 | GOSUB MAL_READ |
| | 28 | IF ER%<>0 THEN GOTO REP_DONE |
| | 29 | |
| | 30 | A%=R%: GOSUB EVAL |
| | 31 | IF ER%<>0 THEN GOTO REP_DONE |
| | 32 | |
| | 33 | A%=R%: GOSUB MAL_PRINT |
| | 34 | RT$=R$ |
| | 35 | |
| | 36 | REP_DONE: |
| | 37 | REM Release memory from EVAL |
| | 38 | AY%=R%: GOSUB RELEASE |
| | 39 | R$=RT$ |
| | 40 | RETURN |
| | 41 | |
| | 42 | REM MAIN program |
| | 43 | MAIN: |
| | 44 | GOSUB INIT_MEMORY |
| | 45 | |
| | 46 | ZT%=ZI%: REM top of memory after base repl_env |
| | 47 | |
| | 48 | REPL_LOOP: |
| | 49 | A$="user> ": GOSUB READLINE: REM call input parser |
| | 50 | IF EOF=1 THEN GOTO QUIT |
| | 51 | |
| | 52 | A$=R$: GOSUB REP: REM call REP |
| | 53 | |
| | 54 | IF ER%<>0 THEN GOSUB PRINT_ERROR: GOTO REPL_LOOP |
| | 55 | PRINT R$ |
| | 56 | GOTO REPL_LOOP |
| | 57 | |
| | 58 | QUIT: |
| | 59 | REM P1%=ZT%: P2%=-1: GOSUB PR_MEMORY |
| | 60 | GOSUB PR_MEMORY_SUMMARY |
| | 61 | END |
| | 62 | |
| | 63 | PRINT_ERROR: |
| | 64 | PRINT "Error: "+ER$ |
| | 65 | ER%=0: ER$="" |
| | 66 | RETURN |
| | 67 | |
HCoop / jackhill / mal.git / blame_incremental