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Lispf41.f
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C******HEART (HEART OF INTERPRETER)
SUBROUTINE LISPF4(IREE)
INCLUDE 'F4COM.FOR'
COMMON /PROMPT/PROTXT(80),PROLEN
INTEGER PROTXT,PROLEN
INTEGER OPENF
C THIS IS A MODIFIED LISPF3 THAT USE A STACK
C AND NOT A A-LIST FOR VARIABLE BINDINGS.
C
C LOCAL DECLARATIONS
C ==================
C
INTEGER ARGS(10)
LOGICAL NLISTP,GREAT,SPECAT,APLYFL,NOEVAL,ILLENV,FORMFL
INTEGER CONS,SUBPR,EQUAL,GET,GETCHT,GETPN,RATOM,COMPPN,
* GARB,GETNUM,ROLLIN,XCALL,INDEX,IOTAB(10),IPNAME(1)
INTEGER*2 JPNAME(1),JDUMMY
REAL NARR(1),RARGS(1)
EQUIVALENCE (LUNIN,IOTAB(1)),(IRES,ARG),(N,NARR(1))
EQUIVALENCE (ARG,ARGS(1),RARGS(1)),(PNAME(1),IPNAME(1),JPNAME(1))
NLISTP(IDUMMY) = IDUMMY.LE.NATOM .OR. IDUMMY.GT.NFREET
GREAT(IDUMMY) = IDUMMY.LT.-ISMALL .OR. IDUMMY.GT.ISMALL
C SPECAT(JDUMMY) = JDUMMY.EQ.STRING .OR. JDUMMY.EQ.SUBSTR
C * .OR. JDUMMY.EQ.ARRAY
SPECAT(JDUMMY) = JDUMMY.LE.SUBSTR .AND. JDUMMY.GE.ARRAY
NUPAIR(IDUMMY,IDUMMZ) = CONS(MKNUM(IDUMMY/IDUMMZ),
* MKNUM(MOD(IDUMMY,IDUMMZ)))
ILLENV(II) = II.GT.TOPS .OR.(II.NE.0 .AND. JACK(II).GT.0)
2 GOTO (10,1 ,1 ),IREE
C INI STA REE
10 CONTINUE
CALL MESS(20)
PRTPOS = 12
CALL IPRINT(CONS(83+NUMADD, CONS(08+NUMADD, CONS(22+NUMADD,NIL))))
CALL MESS(22)
PRTPOS = 12
I = NUMBP-DPNP-2
J = NUMBP-(JBP-2)/BYTES-3
IF (J.LT.I) I = J
CALL IPRINT(CONS(MKNUM(NFREEP-NFREEB),
* CONS(NUMADD+ISMALL,
* CONS(MKNUM(I),
* CONS(MKNUM(NATOM-NATOMP), NIL)))))
C RESTART OF INTERPRETER
C -----------------------------
1 IP = 1
JP=NSTACK+1
IPP=0
JPP=0
CALL MESS(17)
C*SETC* CALL SETCAR(NIL,NIL)
CAR(NIL)=NIL
C*SETC* CALL SETCDR(NIL,NIL)
CDR(NIL)=NIL
C*SETC* CALL SETCAR(T,T)
CAR(T)=T
IFLG1 = NUMADD
CALL TERPRI
IFLG1 = NIL
IFLG2 = NIL
CHT = 1
RDPOS = 1000
LUNIN=LUNINS
FORM=NIL
HILLW=HILL - 150
MIDDL=NSTACK/10
ISPLFT=400
IBREAK=.FALSE.
ARG = LISPX
ARG2 = NIL
ENV=0
TOPS=0
CALL GETCH(1H_,PROTXT(1),1)
PROLEN=1
GOTO 1500
C
C RECURSIVE RETURN PROCEDURE
C DROP TOP BLOCK
C
997 ENV=-JACK(TOPS)
C ! RESTORE ENVIRONMENT
998 TOPS=JILL(TOPS)
C ! DROP TOP BLOCK
999 I=STACK(IP)
IP=IP-1
C
1000 GOTO (15013 ,2020 ,2620 ,2120 ,12185 ,997 ,1020 ,
* 1710 ,1830 ,18060 ,20130 ,18100 ,18170 ,
* 12260 ,18210 ,25090 ,25100 ,15010 ,998 ,12150 ,
* 12290 ,12640 ,20095 ,1795 ,1778 ,1799 ,18012),I
C
C APPLYS EVLIS EVLAS EVCON EVSTK &POPE LISPX
C EAPPL FUNAR SETQ PROG AND OR
C MAPC SELEC ?STOV ?STUN APPLA &POP EVALA
C MAPC RPT PROG EVARGN EVARG NOSP FUNCTION =27
C
GOTO 25130
C ! INTERNAL STACK PROBLEM
C
C
C RECURSIVE FUNCTION LISPX()
C-----------------------------------------------------------------------
C USE EVAL IN TOP LEVEL LOOP
C
1010 IBREAK=.FALSE.
ARG=IREAD(0)
CALL FPUSH(7)
GOTO 1600
C
C--R7 RETURN POSITION FROM EVAL
C
1020 CALL IPRINT(IRES)
CALL TERPRI
GOTO 1010
C
C
C RECURSIVE FUNCTION APPLY(ARG,ARG2)
C
1477 CALL FPUSH(19)
1500 IF (ARG.EQ.NIL) GOTO 999
L=ARG
APLYFL=.TRUE.
ARG=CONS(L,ARG2)
FORM=CONS(NIL,ARG)
GOTO 1671
C ! TO ENTRY EAPPLY(L,ARG2) IN EVAL
C
C RECURSIVE FUNCTION EVAL(ARG)
C ============================
C
1600 IF(IBREAK) GOTO 2400
IF(TOPS.GT.HILLW) GOTO 25095
IF(JP .LE. IP+MIDDL) GOTO 25090
C ! THESE ARE THE ONLY
C ! STACK-OVERFLOW TESTS NEEDED
IF(ARG .GT. NATOM) GOTO 1660
C ! LIST OR NUMBER
IF(ARG.EQ.NIL.OR.ARG.EQ.T)GOTO 999
IF (SPECAT(CAR(ARG))) GOTO 999
C
C EVAL - ATOM.
C ATOM NOT NIL, T, STRING,
C ARRAY OR NUMBER. CHECK IF BOUND ON STACK
C
LOCAL=ENV
IF (LOCAL.LE.0)GOTO 1650
GOTO 1620
1610 LOCAL=-JACK(LOCAL)
IF (LOCAL.LE.0) GOTO 1650
1620 LOCALE=JILL(LOCAL)+2
K=LOCAL
1630 K=K-1
IF (K.LT.LOCALE) GOTO 1610
IF (JACK(K).NE.ARG) GOTO 1630
IRES=JILL(K)
GOTO 999
C
C
C ATOM NOT ON STACK CHECK VALUE CELL.
C
1650 IF(CAR(ARG).EQ.UNBOUN) GOTO 2200
C ! 2200=FAULTEVAL(ARG)
IRES=CAR(ARG)
GOTO 999
C
C HERE IF ARG NUMBER OR LIST
C ==========================
C
1660 IF(ARG .GT. NFREET) GOTO 999
C ! IT'S A NUMBER
C
C EVAL - LIST
C
FORM=ARG
L=CAR(ARG)
ARG2=CDR(ARG)
C
C EAPPLY(L,ARG2) . CALLED FROM EVAL AND FROM APPLY.
C
1670 APLYFL=.FALSE.
1671 LL=L
IF(LL .GT. NATOM) GOTO 1720
C ! CAR OF FORM IS A LIST
C ! HOPEFULLY (LAMBDA ...)
C ! OR (SUBR . ...)
C
C THE FOLLOWING CODE IS FOR AVOIDING CALLS TO GET FOR TESTING IF
C THERE IS ANY FUNCTION DEFINITION STORED UNDER THE FNCELL PROPERTY
LL=CDR(L)
IF(LL.EQ.NIL)GOTO 1676
IF(CAR(LL).NE.FNCELL)GOTO 1677
LL=CAR(CDR(LL))
GOTO 1720
1677 LL=GET(L,FNCELL)
C ! IS THERE ANYTHING IN FUNC.CELL?
IF(LL .NE. NIL) GOTO 1720
C ! THERE WAS SOMETHING
1676 IF(L .GT. FSUBR) GOTO 2230
C ! 2230 = FAULTAPPLY(L)
IF(L .GT. SUBR) GOTO 18000
C ! 18000 = THE MATCH ROUTINE FOR FSUBRS.
IF(L .EQ. NIL) GOTO 2230
C
C
C SUBR CASE
C =========
C
C
C 1. PUT THE BOTOM BLOCK
C
1680 IPREV=TOPS
C ! SAVE OLD TOPS
TOPS=TOPS+1
JACK(TOPS)=L
JILL(TOPS)=ARG
C ! WE PUSH *FORM AND ARG
C
C 2. SPREAD THE ARGS
C
1690 IF (NLISTP (ARG2)) GOTO 1695
C ! ARG2 HOLDS THE ARGLIST
TOPS=TOPS+1
JACK(TOPS)=SUBARG
JILL(TOPS)=CAR(ARG2)
ARG2=CDR(ARG2)
GOTO 1690
C 3. PUT TOP BLOCK
C
1695 TOPS=TOPS+1
JACK(TOPS)=-IPREV
C ! LINK TO PREVIUS BLOCK
JILL(TOPS)= IPREV+1
C ! LINK TO FORM
IF(APLYFL)GOTO 1713
C ! DON'T EVALUATE ARGS IF
C ! SUBR CALLED BY APPLY
C CALL APUSH(L) INLINE
C JP=JP-1
C IF(IP .GE. JP) GO TO 2
C STACK(JP)=L
C ! WE SAVE L (THATS THE SUBR)
C ! ON THE STACK OTHERVISE
C ! IT IS HARD TO KNOW WHAT SUBR
C ! WE HAD WHEN WE HAVE EVALUATED
C ! THE ARGS TO THE SUBR
C EVAL ARGS TO SUBR
C =================
C WHEN WE ARRIVE HERE THE TOP BLOCK MAY LOOK LIKE THIS.
C THE GLOBAL VARIABLE TOPS POINTS TO THE TOPBLOCK.
C THE POINTER IN JILL(TOPS) POINTS TO ARGUMENT UNDER
C EVALUATION.
C
C I-- LINK,,LINK ------------- <--- TOPS
C I -*- FOO I
C I -*- BAR I
C I *FORM (CONS FOO BAR) <-I
C I
C I-> LINK,,LINK
C
1697 JILL(TOPS)=JILL(TOPS)+1
IF(JILL(TOPS).EQ.TOPS)GOTO 1712
C ! WE HAVE EVALUATED ALL ARGS
ARG=JILL(JILL(TOPS))
IP=IP+1
STACK(IP)=8
C ! CALL FPUSH(8)
GOTO 1600
C R-8
1710 IF41=JILL(TOPS)
JILL(IF41)=IRES
GOTO 1697
C
1712 CONTINUE
C OK WE ARE READY NOW WE MUST
C 1. COMPUTE INDEX TO FIRST ARG
C 2. RESTORE FORM
C 3. RESTORE FUNCTION (=L)
C 4. FIX LINK TO PREVIUS BLOCK
C 5. COMPUTE NUMBER OF ARGS
INDEX=-JACK(TOPS)
C ! THATS TO PREVIUS BLOCK SO WE MUST
C ! ADD 2 TO GET THE REAL INDEX
C ! BUT WE CAN USE THIS INDEX FIRST
IF41=INDEX+1
FORM=JILL(IF41)
L=JACK(IF41)
JACK(IF41)=SFORM
C
C CALL APOP(L) INLINE
C IF (JP .GT. NSTACK) GO TO 2
C L=STACK(JP)
C JP=JP+1
C
JILL(TOPS)=INDEX
JACK(TOPS)=0
C ! JACK = 0 SHOWS THIS BLOCK
C ! HAS NO VARIABLES
C
INDEX=INDEX+2
IARGS=TOPS-INDEX
GOTO 2800
C ! 2800 THE DISPATCH FOR SUBRS
C
C SUBR CALLED FROM APPLY
C
C WE DO THE SAME THING BUT WE DONT HAVE TO
C RESTORE FORM OR FUNCTION
C
1713 INDEX=-JACK(TOPS)
JILL(TOPS)=INDEX
JACK(TOPS)=0
INDEX=INDEX+2
IARGS=TOPS-INDEX
GOTO 2800
C ! 2800 THE DISPATCH FOR SUBRS
C
C
C APPLYFN2(LL,ARG2)
C APPLIES A LIST FORM ONTO ARG2
C LL IS (HOPFULLY) ON FORM (LAMBDA (X Y) .....)
C OR (SUBR . ...)
C ARG2 IS A LIST OF PARAMETERS
C
1720 IF (NLISTP(LL)) GOTO 2210
C ! 2210=FAULTAPPLY(LL)
L=CAR(LL)
IF(L .EQ. LAMBDA) GOTO 1730
IF(L .EQ. NLAMBD) GOTO 1722
C (SUBR . X) CASE
IF(L .EQ. EXPR ) GOTO 1810
C (FSUBR . X) CASE
IF(L .EQ. FEXPR) GOTO 1815
IF(L .EQ. FUNARG) GOTO 1818
GOTO 2210
C
1722 NOEVAL=.TRUE.
GOTO 1731
1730 NOEVAL=.FALSE.
C
C
C LAMBDA & NLAMBDA CASE
C =====================
C
C 1. BOTTOM BLOCK
C
1731 IPREV=TOPS
C ! THIS IS PREVIUS BLOCK
TOPS=TOPS+1
JACK(TOPS)=SFORM
JILL(TOPS)=ARG
C ! PUSH FORM ON STACK
C 2. FIND THE LAMBDALIST
C
C IF THE FORM IS (FOO FIE FUM (SETQ BAR 77))
C AND FOO = (DE FOO (X Y)(CONS X Y))
C THEN LL = (LAMBDA (X Y)(CONS X Y))
C AND ARG2 = (FIE FUM (SETQ BAR 77))
C
1750 ICDR=CDR(LL)
ICAR=CAR(ICDR)
C ! ICAR IS THEN (X Y)
1760 IF(NLISTP(ICAR))GOTO 1770
C ! THERE WERE NO LAMBDALIST
C ! OR IT IS EXAUSTED
TOPS=TOPS+1
JACK(TOPS)=CAR(ICAR)
JILL(TOPS)=CAR(ARG2)
ARG2=CDR(ARG2)
ICAR=CDR(ICAR)
GOTO 1760
C
1770 IF(ICAR.NE.NIL) GOTO 1789
C ! WE HAVE A LAMBDA LIST ON FORMAT
C ! (X Y . Z), HALFSPREAD OR L, NOSPREAD
C
C WE ARE ABOUT TO PUT THE TOPBLOCK
C BUT MAYBE ARE THERE EXTRA ARGUMENTS TO THE FUNCTION
C
1771 IF (NLISTP(ARG2)) GOTO 1772
C ! THERE WERE NO EXTRA ARGS
C SOMEONE HAS CALLED A LAMBDA WITH MORE ARGUMENTS
C THAN DEFINED IN LAMBDALIST.
C WE PUT THE EXTRA ARGS ABOVE THE "REAL" ONES.
C THESE ARGS ALL GET THE NAME -*-
C
TOPS=TOPS+1
JACK(TOPS)=SUBARG
JILL(TOPS)=CAR(ARG2)
ARG2=CDR(ARG2)
GOTO 1771
C
C NOW WE CAN PUT THE TOP BLOCK
C
1772 TOPS=TOPS+1
JACK(TOPS)=-IPREV
C ! TO PREVIUS BLOCK
JILL(TOPS)=IPREV+1
C ! TO FORM
IF(NOEVAL.OR.APLYFL)GOTO 1785
C ! IT WAS A NLAMBDA
C ! OR FUNCTION CALLED BY APPLY
C
C
C EVALUATE ALL ARGS
C =================
C
C WHEN WE ARRIVE HERE THE TOP BLOCK MAY LOOK LIKE THIS.
C THE GLOBAL VARIABLE TOPS POINTS TO THE TOPBLOCK
C
C I-- LINK,,LINK ------------------------- <--- TOPS
C I -*- (SETQ BAR 77) I
C I Y FUM I
C I X FIE I
C I *FORM (FOO FIE FUM (SETQ BAR 77)) <-I
C I
C I-> LINK,,LINK
C
1777 JILL(TOPS)=JILL(TOPS)+1
IF (JILL(TOPS).EQ.TOPS) GOTO 1785
IF41=JILL(TOPS)
ARG=JILL(IF41)
IP=IP+1
STACK(IP)=25
C ! CALL FPUSH(25)
GOTO 1600
C R-25
1778 IF41=JILL(TOPS)
JILL(IF41)=IRES
GOTO 1777
C
C
C WE HAVE EVALUATED ALL ARGS
C ==========================
C
C WE MUST NOW
C FIX LINK TO PREVIUS BLOCK
C SAVE THE OLD ENVIRONMENT
C MAKE THIS THE NEW ENVIRONMENT
C RESTORE FORM AND FUNCTION
C
1785 INDEX=-JACK(TOPS)
JILL(TOPS)=INDEX
JACK(TOPS)=-ENV
ENV=TOPS
FORM=JILL(INDEX+1)
L=CAR(FORM)
1776 IF(NLISTP(L)) GOTO 1786
LL=L
TEMP1=CAR(L)
IF(TEMP1.NE.FUNARG) GOTO 1788
TEMP1=CDR(L)
L=CAR(TEMP1)
GOTO 1776
C THE FOLLOWING CODE IS FOR AVOIDING CALLS TO GET
1786 LL=CDR(L)
C ASSUME THAT THERE IS ALWAYS A PROPERTY LIST
IF(CAR(LL).NE.FNCELL)GOTO 1787
LL=CAR(CDR(LL))
GOTO 1788
1787 LL=GET(L,FNCELL)
1788 ARG=CDR(LL)
ARG=CDR(ARG)
C
C NOW ITS TIME TO CALL EVLAST WITH THE FUNCTION BODY
C AND WHEN WE RETURN FROM THERE GOTO 997 TO POP ENVIRONMENT.
C THIS WE COULD HAVE DONE WITH
C CALL FPUSH(?)
C GOTO 2600
C R- ?
CXXXX GOTO 997
C
C BUT AS FPUSH(6) RETURNS TO 997 WE SAVE ONE RECURSION BY
C
CALL FPUSH(6)
GOTO 2600
C
C HALF AND NOSPREAD ARGS
C ======================
C
1789 TOPS=TOPS+1
JACK(TOPS)=ICAR
JILL(TOPS)=ARG2
C ! PUT THE LAST ARG (HALFSPREAD)
C ! OR THE ONLY ARG (NOSPREAD)
TOPS=TOPS+1
JACK(TOPS)=-IPREV
JILL(TOPS)=IPREV+1
IF(NOEVAL.OR.APLYFL) GOTO 1785
1790 JILL(TOPS)=JILL(TOPS)+1
IF (JILL(TOPS).EQ.TOPS-1) GOTO 1797
C ! LAST ARGUMENT
IF41=JILL(TOPS)
ARG=JILL(IF41)
IP=IP+1
STACK(IP)=24
C ! CALL FPUSH(24)
GOTO 1600
C --R24
1795 IF41=JILL(TOPS)
JILL(IF41)=IRES
GOTO 1790
C
1797 ARG=JILL(TOPS-1)
CALL FPUSH(26)
GOTO 2000
C ! CALL EVLIS WITH LAST OR
C ! THE ONLY ARG
C R--26
1799 JILL(TOPS-1)=IRES
GOTO 1785
C
C
C
C
C (SUBR . ATOM)
1810 L=CDR(LL)
IF(L .GT. SUBR) GOTO 2210
C ! 2210=FAULTAPPLY(LL)
IF (L.EQ.NIL) GOTO 2230
GOTO 1680
C (FSUBR . ATOM)
1815 L=CDR(LL)
IF(L .GT. FSUBR) GOTO 2210
IF(L .LE. SUBR) GOTO 2210
GOTO 18000
C ! 18000=MATCH ROUTINE FOR FSUBRS.
C
C
C FUNARG
C THIS CODE MUST BE REWRITEN IT WORKS BUT !!
1818 CONTINUE
TEMP1=CDR(LL)
IF(NLISTP(TEMP1))TEMP1=NIL
L=CAR(TEMP1)
IF(NLISTP(TEMP1))TEMP1=NIL
TEMP1=CDR(TEMP1)
TEMP2=CAR(TEMP1)
1820 CONTINUE
IPREV=TOPS
TOPS=TOPS+1
JACK(TOPS)=SFORM
c JILL(TOPS)=TEMP1 !! THIS LINE CHANGED TO BELOW LINE, 20 OCTOBER 84
JILL(TOPS)=LL
1821 TEMP3=CAR(TEMP2)
IF(NLISTP(TEMP3)) GOTO 1822
TOPS=TOPS+1
TEMP2=CDR(TEMP2)
JACK(TOPS)=CAR(TEMP3)
JILL(TOPS)=CDR(TEMP3)
GOTO 1821
1822 TOPS=TOPS+1
JACK(TOPS)=-ENV
JILL(TOPS)=IPREV
ENV=TOPS
APLYFL=.FALSE.
CALL FPUSH(9)
GOTO 1671
C
C--R9
C
1830 K=JILL(TOPS)+1
TEMP1=JILL(K)
IF(NLISTP(TEMP1))GOTO 2250
TEMP1=CDR(TEMP1)
IF(NLISTP(TEMP1))GOTO 2250
TEMP1=CDR(TEMP1)
IF(NLISTP(TEMP1))GOTO 2250
TEMP1=CAR(TEMP1)
K1=K
1832 K1=K1+1
IF(K1.GE.TOPS)GOTO 997
IF(NLISTP(TEMP1))GOTO 2250
TEMP2=CAR(TEMP1)
IF(NLISTP(TEMP2))GOTO 2250
IF(CAR(TEMP2).NE.JACK(K1)) GOTO 2250
C*SETC* CALL SETCDR(TEMP2,JILL(K1))
CDR(TEMP2)=JILL(K1)
TEMP1=CDR(TEMP1)
GOTO 1832
C
C
C
C RECURSIVE FUNCTION EVLIS(ARG)
C-----------------------------------------------------------------------
C
2000 IF (NLISTP(ARG)) GOTO 999
JP=JP-2
STACK(JP+1)=NIL
STACK(JP)=ARG
C ! CALL APUSH2(NIL,ARG)
2010 ARG=CAR(ARG)
IP=IP+1
STACK(IP)=2
C ! CALL FPUSH(2)
GOTO 1600
C
C--R2 RETURN FROM EVAL(ARG)
C
2020 TEMP1=STACK(JP+1)
STACK(JP+1)=CONS(IRES,TEMP1)
ICDR=STACK(JP)
ARG=CDR(ICDR)
IF (NLISTP(ARG)) GOTO 2030
STACK(JP)=ARG
GOTO 2010
2030 IRES=STACK(JP+1)
JP=JP+2
C DREVERSE IRES BEFORE RETURN.
TEMP1=NIL
2040 TEMP2=CDR(IRES)
C*SETC* CALL SETCDR(IRES,TEMP1)
CDR(IRES)=TEMP1
IF(TEMP2 .EQ. NIL) GOTO 999
TEMP1=IRES
IRES=TEMP2
GOTO 2040
C
C
C-----------------------------------------------------------------------
C RECURSIVE FUNCTION EVCON
C
2100 JP=JP-1
2110 STACK(JP)=ARG
IF (NLISTP(ARG)) GOTO 2140
ICAR=CAR(ARG)
IF (NLISTP(ICAR)) GOTO 25080
ARG=CAR(ICAR)
IP=IP+1
STACK(IP)=4
GOTO 1600
C
C--R4 RETURN FROM EVAL(ARG)
C
2120 IF(IRES .NE. NIL) GOTO 2130
ICDR=STACK(JP)
ARG=CDR(ICDR)
GOTO 2110
2130 ICAR=STACK(JP)
ICAR=CAR(ICAR)
ICAR=CDR(ICAR)
JP=JP+1
IF(ICAR .EQ. NIL) GOTO 999
ARG=ICAR
GOTO 2600
2140 JP=JP+1
IRES=NIL
GOTO 999
C
C
C
C FAULTEVAL AND FAULTAPPLY AS CALLED FROM EVAL-APPLY.
C ---------------------------------------------------
C
2200 L=EVAL
ERRTYP=1
FORM=ARG
GOTO 2400
C
2210 ARG=LL
ERRTYP = 2
2220 L=APPLY
GOTO 2400
C
2230 ARG=L
ERRTYP=2
GOTO 2220
C
2240 ERRTYP=26
ARG=ARG2
GOTO 2400
C
C FAULTY FUNARG BLOCK
C
2250 ERRTYP=31
FORM=JILL(JILL(TOPS)+1)
L=CAR(FORM)
ARG=NIL
GOTO 2400
C
C SYSERROR(ERRTYP,L,ARG,FORM)
C ---------------------------
C THIS ENTRY IS USED FOR ALL WEAK ERRORS IN THE SYSTEM.
C WHEN CALLED, ERRTYP=TYPE OF ERROR, L=FAILING FUNCTION,
C ARG=ERRONEOUS FORM, FORM=FORM BEING EVALUATED.
C HERE THE LISP-DEFINED FUNCTION SYSERROR IS CALLED.
2400 ARG2=CONS(FORM,NIL)
ARG2=CONS(ARG,ARG2)
ARG2=CONS(L,ARG2)
ARG2=CONS(ERRTYP+NUMADD,ARG2)
ARG=ERROR
IBREAK=.FALSE.
LMARG=1
GOTO 1500
C CALL APPLY(SYSERROR, (ERRTYP L ARG FORM))
C
C
C
C
C RECURSIVE FUNCTION EVLAST(ARG)
C-----------------------------------------------------------------------
C
C ON ENTRY HERE ARG HOLDS A LIST OF FORMS THAT SHOULD BE EVALUATED
C (SETQ FOO 77)(...) (....)
C THE LIST IS KEEPT ON TOP OF STACK AND CAR OF IT IS SENT TO EVAL
C WHEN ONLY ONE FORM IS LEFT THIS FORM IS GIVEN TO EVAL BUT BEFORE
C THE TOP OF STACK IS CLEARED AND EVAL IS CALLED NONRECURCIVLY
C
2600 IF (NLISTP(ARG)) GOTO 999
JP=JP-1
STACK(JP)=ARG
TEMP1=ARG
2610 ARG=CAR(TEMP1)
I = CDR(TEMP1)
IF (NLISTP(I)) GOTO 2630
IP=IP+1
STACK(IP)=3
GOTO 1600
C
C--R3 RETURN FROM EVAL(ARG)
C
2620 ICAR=STACK(JP)
TEMP1=CDR(ICAR)
STACK(JP)=TEMP1
GOTO 2610
2630 JP=JP+1
GOTO 1600
C
C MAIN DISPATCH
C =============
C
C AT ENTRY , L=THE FUNCTION, IARGS=NR OF ARGS IN
C JILL ,STARTING AT INDEX
C
C
2800 IF (L.LE.SUBR0) GOTO 3000
IF (L.LE.SUBR1) GOTO 3020
IF (L.LE.SUBR2) GOTO 3140
IF (L-SUBR3) 3200,3200,3290
C-----------------------------------------------------------------------
C SUBR0 ENTRY
C
3000 GOTO( 3090,10075,
* 10080,10130,10050,10060,10070, 1010,10090,10100,10000,
* 10105,1 ,10110 ,10120),L
C NIL BTV*
C CLOCK DATE EJECT EXIT GENSY LISPX RATOM READ READC
C READP RESET TERPRI TIME
C-----------------------------------------------------------------------
C SUBR1 ENTRY
C
3020 ARG=NIL
IF (IARGS.EQ.0) GOTO 3050
3040 ARG=JILL(INDEX)
C
C SUBR1 JUMP ENTRY
C
3050 IF (L.LE.SUBR11) GOTO 3070
LL=L-SUBR11
C JUMP TO SUBR1 (AND DO NOT TEST ON NUM ARG)
GOTO (10040,11190,11197,11200,
* 11210,11210,11210,11210,11210,11210,11210,11210,11210,
* 11210,11210,11210,11210,11210,11215,11220,11225,11227,11230,
* 11255,11260,11290,11205,11310,11320,11330,11340,
* 998,11355,20150,11360,11415,11420),LL
C ALIST ARRAYSIZE ARRAYP ATOM
C CAR CDR CAAR CADR CDAR CDDR CAAAR CAADR CADAR
C CADDR CDAAR CDADR CDDAR CDDDR EVAL EVLIS FIXP FLOATP GETD
C LAST,LENGTH LISTP LITAT NLISTP NULL NUMBE OBLIS
C PROG1 PROMP RETUR REVER STRINGP ZEROP
C
C SUBR1 TEST ON NUMERICAL ARG
C
3070 IF (ARG.LE.BIGNUM) GOTO 25000
N = ARG-NUMADD
LL=L-SUBR0
GOTO(11000,11010,11020,11050,11060,11070,11080),LL
C ADD1 ERRMS RECLA ROLLI ROLLO SUB1 REWIND
C
C RETURN CHANNELS (CAN BE USED BY ALL SUBR'S AND FSUBR'S EXCEPT SUBRN'S)
C
C TEMP1
C
3080 IRES = TEMP1
GOTO 998
C
C PREDICATES
C
3090 IRES=NIL
GOTO 998
3100 IRES=T
GOTO 998
C
C NUMERICAL VALUED FUNCTIONS
C
3105 CONTINUE
3110 IF(IRFLAG.NE.NIL) GOTO 3120
IF (GREAT(N)) GOTO 3130
IRES = N+NUMADD
GOTO 998
3120 IRES = MKREAL(R)
GOTO 998
3130 IRES=MKNUM(N)
GOTO 998
C-----------------------------------------------------------------------
C SUBR2 ENTRY
C
3140 ARG2=NIL
ARG=NIL
IF41=IARGS+1
GOTO (3190,3180,3170), IF41
3170 ARG2=JILL(INDEX+1)
3180 ARG=JILL(INDEX)
C
C SUBR 2 JUMP ENTRY
C
3190 LL=L-SUBR1
GOTO (12000,12040,12050,1477 ,12715,12720,12090,12100,12112,
* 12114,
* 12116,12120,12130,12140,12160,12190,12200,12730,12205,12210,
* 12350,12390,12430,12470,12500,12510,12515,12520,12540,12570,
* 12600,
* 12620,12655,12660,12690,12746,12750,12780), LL
C ADDLI ALPHO APPEN APPLY ASSOC CHTAB CONS DIFFE ELT
C ELTI
C ELTR EQ EQUAL EVALA EVSTK GETP GREAT IOTAB IQUOR LESSP
C MEMB MEMBE NCHAR NCONC NCONC1 NEQ NTH PACK QUOTI RPLACA
C RPLACD
C RPT SASSOC SET STRAL TAILP UNPAC XCALL
C-----------------------------------------------------------------------
C SUBR3 ENTRY
C
3200 ARG=NIL
ARG2=NIL
ARG3=NIL
IF41 = IARGS + 1
GOTO (3280,3209,3207,3205), IF41
3205 ARG3=JILL(INDEX+2)
3207 ARG2=JILL(INDEX+1)
3209 ARG =JILL(INDEX)
C
C SUBR3 JUMP ENTRY
C
3280 LL=L-SUBR2
GOTO (15000,15012,15015,12330,12220,12310,12340 ,12345,15020,
*15040, 15130,15142,15144,15146,15150,15160,15190), LL
C APPLYA APPLYS ARRAY MAP MAPC MAPCA MAPLI OPEN0 PRIN0
C PUT RPLST SETA SETI SETR SUBPAIR SUBSTR SYSERROR
C-----------------------------------------------------------------------
C SUBRN ENTRY
C
C IT IS HERE UP TO THE SUBRN TO TAKE CARE OF THE ARGS
C
3290 LL=L-SUBR3
GOTO (16000,16010,16040,16070,16080), LL
C CONCAT LIST PLUS SYSFLA TIMES
C
C RETURN CHANNELS (3105 ALSO)
3300 CONTINUE
IF(IFLG2-NIL) 16005,998,16005
C-----------------------------------------------------------------------
C SUBR 0
C-----------------------------------------------------------------------
C
C READC
C
10010 CALL SHIFT(2)
10000 IF (CHT.LE.0) GOTO 10010
IF (CHT.LT.13 .OR. CHT.GE.23) GOTO 10020
IRES=CHT-13+NUMADD
GOTO 10030
10020 ABUFF(1) = CHR
IRES=MATOM(1)
10030 CALL SHIFT(2)
GOTO 998
C
C ALIST
C
10040 LOCAL=ENV
FORMFL = ARG.NE.NIL
TEMP1=CONS(NIL,NIL)
TEMP2=TEMP1
IF (LOCAL.LE.0)GOTO 10044
GOTO 10042
10041 IF(.NOT.FORMFL) GOTO 10037
IF(JACK(K).NE.SFORM)GOTO 10037
C*SETC* CALL SETCDR(TEMP1,CONS(CONS(JACK(K),JILL(K)),NIL))
CDR(TEMP1)=CONS(CONS(JACK(K),JILL(K)),NIL)
TEMP1=CDR(TEMP1)
10037 LOCAL=-JACK(LOCAL)
IF(LOCAL.LE.0)GOTO 10044
10042 LOCALE=JILL(LOCAL)+2
K=LOCAL
10043 K=K-1
IF (K.LE.0) GOTO 10044
IF (K.LT.LOCALE) GOTO 10041
C*SETC* CALL SETCDR(TEMP1,CONS( CONS(JACK(K),JILL(K)),NIL))
CDR(TEMP1)=CONS( CONS(JACK(K),JILL(K)),NIL)
TEMP1=CDR(TEMP1)
GOTO 10043
10044 IRES=CDR(TEMP2)
GOTO 998
C
C EJECT
C
10050 CALL EJECT(LUNUT)
GOTO 3090
C
C EXIT
C
10060 CALL LSPEX
C
C GENSYM
C
10070 ARG=CONS(A000,CONS(MKNUM(NUMGEN),NIL))
NUMGEN=NUMGEN+1
ARG2=NIL
GOTO 12520
C TO PACK
C
C BTV*
10075 CALL SHOSTK
IRES=NIL
GOTO 998
C
C CLOCK
C
10080 IRES=MKNUM(MSLFT(I))
GOTO 998
C
C RATOM
C
10090 BRFLG = NIL
I = RATOM(IRES,0)
GOTO 998
C
C READ
C
10100 IRES=IREAD(0)
GOTO 998
C
C READP
10105 IF(CHT.GT.1) GOTO 3100
IF(RDPOS.GT.MARGR) GOTO 3090
CALL SHIFT (2)
GOTO 10105
C
C RESET = GOTO 1
C
C
C TERPRI
C
10110 CALL TERPRI
PRTPOS=LMARG
GOTO 3090
C
C TIME
10120 CALL MTIME(BUFF)
C CHANGE 5 IF YOUR TIME FORMAT IS NOT 5 LONG
DO 10125 I=1,5
CALL GETCH(BUFF,TEMP1,I)
ABUFF(I)=TEMP1
10125 CONTINUE
C THE TWO 5'S BELOW MUST ALSO BE CHANGED
ABUP1= 5
IRES=MATOM(-5)
GOTO 998
C
C DATE
10130 CALL MDATE(BUFF)
C YOU CAN CHANGE THE 10 IN THE DO STATEMENT BELOW IF YOU
C HAVE A DATE FORMAT THAT IS NOT 10 CHARACTERS LONG
DO 10135 I=1,10
CALL GETCH(BUFF,TEMP1,I)
ABUFF(I)=TEMP1
10135 CONTINUE
C THE TWO OCCURENCES OF 10 BELOW MUST ALSO BE CHANGED
ABUP1= 10
IRES=MATOM(-10)
GOTO 998
C-----------------------------------------------------------------------
C SUBR 1 (WITH NUMERICAL ARG IN N)
C-----------------------------------------------------------------------
C
C ADD1
C
11000 N=N+1
IRFLAG = NIL
GOTO 3110
C
C ERRORMESS
C
11010 IF (N.LT.1 .OR. N.GT.MAXMES) GOTO 25000
CALL MESS(N)
GOTO 998
C
C RECLAIM
C