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schum.l
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schum.l
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(FILEHEADER SCHUM)
(PRINT '(SCHUM PROGRAMMING SYSTEM))
(PRINT '(VERSION 2))
(DEFINEQ
(ASN
(LAMBDA NIL
(SPUSH 'ASN1)
(SETQ **EXP** (CADDR **EXP**))
(SETQ **PC** 'SEVAL)))
(ASN1
(LAMBDA NIL
(PROG ((B (VARBDG (CADR **EXP**) **ENV**)))
(COND (B (VAL:BDG:SET B **VAL**))
((SET (CADR **EXP**) **VAL**)))
(SPOP))))
(BDG
(LAMBDA (VAR VAL) (LIST VAR VAL)))
(BDGS:ENV
(LAMBDA (E) E))
(BLOCK
(LAMBDA NIL
(PROG ((BVARS (CADR **EXP**)) VARS VALS)
LOOP (COND (BVARS (PUSH (POP BVARS) VARS)
(PUSH (POP BVARS) VALS)
(GO LOOP)))
(SETQ VARS (REVERSE VARS))
(SETQ VALS (REVERSE VALS))
(SETQ **ENV**
(VARSBIND VARS
(MAPCAR VALS '(LAMBDA (X) NIL))
**ENV**))
(SETQ **ARGS** VALS)
(SETQ **ARGVALS** (BDGS:ENV **ENV**))
(SETQ **PC** 'REC-EVLIS))))
(BODY:LAMBDA-EXP
(LAMBDA (X) (CADDR X)))
(CLOSURE
(LAMBDA (FUN ENV) (LIST 'CLOSURE FUN ENV)))
(DEF
(NLAMBDA L
(SET (CAR L)
(CLOSURE
(LAMBDA-EXP (CADR L) (CDDR L))
(EMPTY-ENV)))
(CAR L)))
(EMPTY-ENV
(LAMBDA NIL NIL))
(ENV
(LAMBDA (BDGS) BDGS))
(ENV:CLOSURE
(LAMBDA (X) (CADDR X)))
(ERROR
(LAMBDA (X) (PRINT X) NIL))
(EVLIS0
<LAMBDA NIL
(COND (**ARGS**
(SPUSH 'EVLIS1)
(SETQ **EXP** (CAR **ARGS**))
(SETQ **PC** 'SEVAL))
(T (SETQ **ARGVALS** (REVERSE **ARGVALS**))
(SETQ **ARGS** (POP **ARGVALS**))
(SETQ **PC** 'SCHAPPLY>)
(EVLIS1
(LAMBDA NIL
(SETQ **ARGVALS** (CONS **VAL** **ARGVALS**))
(SETQ **ARGS** (CDR **ARGS**))
(SETQ **PC** 'EVLIS0)))
(EVSEQ
<LAMBDA NIL
(COND (**ARGS**
(COND ((CDR **ARGS**) (SPUSH 'EVSEQ1)))
(SETQ **EXP** (CAR **ARGS**))
(SETQ **PC** 'SEVAL))
((SPOP>)
(EVSEQ1
(LAMBDA NIL (SETQ **ARGS** (CDR **ARGS**)) (SETQ **PC** 'EVSEQ)))
(FRAME
(LAMBDA (EXP ENV PC ARGS ARGVALS SUPER)
(NCONC (LIST EXP ENV PC ARGS ARGVALS) SUPER)))
(FRAME:LABEL-FUNCTION
(LAMBDA (X) (CADR X)))
(FUN:APPL
(LAMBDA (X) (CAR X)))
(FUN:CLOSURE
(LAMBDA (X) (CADR X)))
(GETL
<LAMBDA (F)
(OR (GETPROP F 'SCHUMRES)
(AND (LISTP (SETQ F (GETD F)))
(SELECTQ (CAR F) (NLAMBDA F) (FSUBR F) NIL>)
(IF0
(LAMBDA NIL (SETQ **ARGS** (CDR **EXP**)) (SETQ **PC** 'IF1)))
(IF1
<LAMBDA NIL
(COND (**ARGS**
(COND ((OR (CDR **ARGS**) (CDAR **ARGS**))
(SPUSH 'IF2)))
(SETQ **EXP** (CAAR **ARGS**))
(SETQ **PC** 'SEVAL))
(T (SETQ **VAL** NIL) (SPOP>)
(IF2
<LAMBDA NIL
(COND (**VAL**
(SETQ **ARGS** (CDAR **ARGS**))
(SETQ **PC** 'EVSEQ))
(T (SETQ **ARGS** (CDR **ARGS**))
(SETQ **PC** 'IF1>)
(IS-CLOSURE
(LAMBDA (X) (EQ 'CLOSURE (CAR X))))
(IS-LABEL-FUNCTION
(LAMBDA (X) (EQ 'LABEL-FUNCTION (CAR X))))
(IS-PRIMOP
(LAMBDA (F)
(AND (LISTP (SETQ F (GETD F)))
(SELECTQ (CAR F) (SUBR F) (LAMBDA F) NIL))))
(LABEL-FUNCTION
(LAMBDA (FRAME) (LIST 'LABEL-FUNCTION FRAME)))
(LAMBDA-EXP
(LAMBDA (VARS BODY) (LIST '\ VARS BODY)))
(MAPCAR2
<LAMBDA (F L1 L2)
(COND ((NULL L1) NIL)
(T (CONS (APPLY F (LIST (CAR L1) (CAR L2)))
(MAPCAR2 F (CDR L1) (CDR L2>)
(MLOOP
<LAMBDA NIL
(PROG NIL
LOOP (COND (**PC** (APPLY **PC** NIL) (GO LOOP))
((RETURN **VAL**>)
(POP
<NLAMBDA ($POP$)
(PROG (($POP (EVAL $POP$)))
(SET $POP$ (CDR $POP))
(RETURN (CAR $POP>)
(PUSH
<NLAMBDA ($PUSH$ $PUSH)
(CAR (SET $PUSH (CONS (EVAL $PUSH$) (EVAL $PUSH>)
(REC-EVLIS
<LAMBDA NIL
(COND (**ARGS**
(SPUSH 'REC-EVLIS1)
(SETQ **EXP** (CAR **ARGS**))
(SETQ **PC** 'SEVAL))
(T (SETQ **ARGS** (CDDR **EXP**))
(SETQ **PC** 'EVSEQ>)
(REC-EVLIS1
(LAMBDA NIL
(VAL:BDG:SET (POP **ARGVALS**) **VAL**)
(SETQ **ARGS** (CDR **ARGS**))
(SETQ **PC** 'REC-EVLIS)))
(SCHAPPLY
<LAMBDA NIL
(COND ((ATOM **ARGS**)
(SETQ **VAL** (APPLY **ARGS** **ARGVALS**))
(SPOP))
((IS-CLOSURE **ARGS**)
(SETQ **ENV**
(VARSBIND
(VARS:LAMBDA-EXP (FUN:CLOSURE **ARGS**))
**ARGVALS**
(ENV:CLOSURE **ARGS**)))
(SETQ **ARGS**
(BODY:LAMBDA-EXP (FUN:CLOSURE **ARGS**)))
(SETQ **PC** 'EVSEQ))
((IS-LABEL-FUNCTION **ARGS**)
(SETQ **VAL** (CAR **ARGVALS**))
(SETQ **STACK** (FRAME:LABEL-FUNCTION **ARGS**))
(SPOP))
((ERROR "BAD FUNCTION">)
(SCHUM
<LAMBDA NIL
(PROG (R)
LOOP (PRINT 'SCHUM)
<SETQ R (PRINT (SCHUMVAL (READ>
(AND (NEQ R 'LISP) (GO LOOP>)
(SCHUMVAL
<LAMBDA (**EXP**)
(PROG ((**ENV** **ENV**)
(**PC** 'SEVAL)
**ARGS** **ARGVALS**
(**STACK** (FRAME NIL NIL NIL NIL NIL NIL)))
(RETURN (MLOOP>)
(SEVAL
<LAMBDA NIL
(PROG (TEMP)
(COND ((ATOM **EXP**)
(COND ((OR (NUMBERP **EXP**)
(IS-PRIMOP **EXP**))
(SETQ **VAL** **EXP**))
((SETQ TEMP (VARBDG **EXP** **ENV**))
(SETQ **VAL** (VAL:BDG TEMP)))
((ERRORSET
'(SETQ **VAL** (EVAL **EXP**))
NIL))
((ERROR "UNBOUND VARIABLE")))
(SPOP))
<(AND (ATOM (FUN:APPL **EXP**))
(GETL (FUN:APPL **EXP**)))
(COND ((SETQ TEMP
(GETPROP
(FUN:APPL **EXP**)
'SCHUMRES))
(SETQ **PC** TEMP))
((GETD (FUN:APPL **EXP**))
(SETQ **VAL** (EVAL **EXP**))
(SPOP>
(T (SETQ **ARGVALS** NIL)
(SETQ **ARGS** **EXP**)
(SETQ **PC** 'EVLIS0>)
(SLABEL
(LAMBDA NIL
(SETQ **ENV**
(VARSBIND
(LIST (CADR **EXP**))
(LIST (LABEL-FUNCTION **STACK**))
**ENV**))
(SETQ **ARGS** (CDDR **EXP**))
(SETQ **PC** 'EVSEQ)))
(SPOP
<LAMBDA NIL
(COND (**STACK**
(SETQ **EXP** (POP **STACK**))
(SETQ **ENV** (POP **STACK**))
(SETQ **PC** (POP **STACK**))
(SETQ **ARGS** (POP **STACK**))
(SETQ **ARGVALS** (POP **STACK**)))
(T (ERROR "BLEW STACK">)
(SPUSH
(LAMBDA (TAG)
(SETQ **STACK**
(FRAME **EXP** **ENV** TAG **ARGS** **ARGVALS** **STACK**))))
(VAL:BDG
(LAMBDA (X) (CADR X)))
(VAL:BDG:SET
(LAMBDA (X V) (RPLACA (CDR X) V)))
(VARBDG
(LAMBDA (V E) (ASSOC V E)))
(VARS:ENV
(LAMBDA (E) (MAPCAR E 'CAR)))
(VARS:LAMBDA-EXP
(LAMBDA (X) (CADR X)))
(VARSBIND
<LAMBDA (VARS VALS ENV)
(COND ((EQUAL (LENGTH VARS) (LENGTH VALS))
(NCONC (MAPCAR2 'BDG VARS VALS) ENV))
(T (ERROR "WRONG NUMBER OF ARGUMENTS">)
(\
(NLAMBDA L (CLOSURE (LAMBDA-EXP (CAR L) (CDR L)) **ENV**)))
)
(PRINT 'SCHUMFNS)
(RPAQQ SCHUMFNS
(ASN ASN1 BDG BDGS:ENV BLOCK BODY:LAMBDA-EXP CLOSURE DEF EMPTY-ENV ENV
ENV:CLOSURE ERROR EVLIS0 EVLIS1 EVSEQ EVSEQ1 FRAME
FRAME:LABEL-FUNCTION FUN:APPL FUN:CLOSURE GETL IF0 IF1 IF2
IS-CLOSURE IS-LABEL-FUNCTION IS-PRIMOP LABEL-FUNCTION LAMBDA-EXP
MAPCAR2 MLOOP POP PUSH REC-EVLIS REC-EVLIS1 SCHAPPLY SCHUM
SCHUMVAL SEVAL SLABEL SPOP SPUSH VAL:BDG VAL:BDG:SET VARBDG
VARS:ENV VARS:LAMBDA-EXP VARSBIND \))
(RPAQQ SCHUMCOMS (SCHUM PROGRAMMING SYSTEM))
(RPAQ SCHUMGENNR 2)
(PRINT 'SCHUMVARS)
(RPAQQ SCHUMVARS
((P (SETQ **ENV** (EMPTY-ENV)))
(PROP SCHUMRES ASN IF0 BLOCK LABEL)))
(SETQ **ENV** (EMPTY-ENV))
(DEFLIST '((ASN ASN) (IF0 IF0) (BLOCK BLOCK) (LABEL SLABEL))
'SCHUMRES)
STOP