mirror of
https://github.com/kanaka/mal.git
synced 2024-09-19 09:38:28 +03:00
8a19f60386
- Reorder README to have implementation list after "learning tool" bullet. - This also moves tests/ and libs/ into impls. It would be preferrable to have these directories at the top level. However, this causes difficulties with the wasm implementations which need pre-open directories and have trouble with paths starting with "../../". So in lieu of that, symlink those directories to the top-level. - Move the run_argv_test.sh script into the tests directory for general hygiene.
68 lines
1.0 KiB
QBasic
Executable File
68 lines
1.0 KiB
QBasic
Executable File
GOTO MAIN
|
|
|
|
REM $INCLUDE: 'mem.in.bas'
|
|
REM $INCLUDE: 'types.in.bas'
|
|
REM $INCLUDE: 'readline.in.bas'
|
|
REM $INCLUDE: 'reader.in.bas'
|
|
REM $INCLUDE: 'printer.in.bas'
|
|
|
|
REM $INCLUDE: 'debug.in.bas'
|
|
|
|
REM READ(A$) -> R
|
|
MAL_READ:
|
|
GOSUB READ_STR
|
|
RETURN
|
|
|
|
REM EVAL(A, E) -> R
|
|
SUB EVAL
|
|
R=A
|
|
END SUB
|
|
|
|
REM PRINT(A) -> R$
|
|
MAL_PRINT:
|
|
AZ=A:B=1:GOSUB PR_STR
|
|
RETURN
|
|
|
|
REM REP(A$) -> R$
|
|
SUB REP
|
|
GOSUB MAL_READ
|
|
IF ER<>-2 THEN GOTO REP_DONE
|
|
|
|
A=R:CALL EVAL
|
|
IF ER<>-2 THEN GOTO REP_DONE
|
|
|
|
A=R:GOSUB MAL_PRINT
|
|
|
|
REP_DONE:
|
|
REM Release memory from EVAL
|
|
AY=R:GOSUB RELEASE
|
|
END SUB
|
|
|
|
REM MAIN program
|
|
MAIN:
|
|
GOSUB INIT_MEMORY
|
|
|
|
ZT=ZI: REM top of memory after base repl_env
|
|
|
|
REPL_LOOP:
|
|
A$="user> ":GOSUB READLINE: REM call input parser
|
|
IF EZ=1 THEN GOTO QUIT
|
|
IF R$="" THEN GOTO REPL_LOOP
|
|
|
|
A$=R$:CALL REP: REM call REP
|
|
|
|
IF ER<>-2 THEN GOSUB PRINT_ERROR:GOTO REPL_LOOP
|
|
PRINT R$
|
|
GOTO REPL_LOOP
|
|
|
|
QUIT:
|
|
REM GOSUB PR_MEMORY_SUMMARY_SMALL
|
|
#cbm END
|
|
#qbasic SYSTEM
|
|
|
|
PRINT_ERROR:
|
|
PRINT "Error: "+E$
|
|
ER=-2:E$=""
|
|
RETURN
|
|
|