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SUBROUTINE XPARAM
C
C THE PURPOSE OF XPARAM IS TO GENERATE THE PARAMETER SECTION OF AN
C OSCAR ENTRY,AND TO GENERATE THE VPS TABLE.
C
C ... DESCRIPTION OF PROGRAM VARIABLES ...
C ITMP = TEMPORARY STORAGE FOR PARAMETER NAME AND VALUE.
C IPVAL = HIGHEST PRIORITY NOMINAL VALUE IN ITMP.
C IPRVOP = PREVIOUS OPERATOR OR OPERAND RECEIVED FROM DMAP.
C INDEX = TABLE CONTAINING ROW INDEXES FOR ISYNTX TABLE.
C ISYNTX = SYNTAX TABLE USED TO PROCESS DMAP PARAMETER LIST.
C NVSTBL = NOMINAL VALUE SOURCE TABLE.
C NOSPNT = POINTER TO PARAMETER COUNT IN PARAMETER SECTION OF OSCAR.
C IOSPNT = POINTER TO NEXT AVAILABLE WORD IN OSCAR.
C ENDCRD = END OF CARD FLAG
C MPLLN = LENGTH(IN WORDS) OF MPL PARAMETER VALUE
C ITYPE = TABLE FOR TRANSLATING NUMBER TYPE CODES TO WORD LENGTH.
C ENDCRD = FLAG INDICATING END OF CARD SENSED.
C
C RETURN CODES FROM XSCNDM
C
C 1 DELIMITOR
C 2 BCD
C 3 VALUE
C 4 END OF CARD
C 5 ERROR ENCOUNTERED
C
IMPLICIT INTEGER (A-Z)
EXTERNAL LSHIFT,RSHIFT,ANDF,ORF
DIMENSION ITMP(7),INDEX(2,2),ISYNTX(4,5),NVSTBL(4,4),
1 ITYPE(6),OSCAR(1),OS(5)
COMMON /SYSTEM/ BUFSZ,OPTAPE,NOGO
COMMON /XGPIC / ICOLD,ISLSH,IEQUL,NBLANK,NXEQUI,
1 NDIAG,NSOL,NDMAP,NESTM1,NESTM2,NEXIT,
2 NBEGIN,NEND,NJUMP,NCOND,NREPT,NTIME,NSAVE,NOUTPT,
3 NCHKPT,NPURGE,NEQUIV,
4 NCPW,NBPC,NWPC,
5 MASKHI,MASKLO,ISGNON,NOSGN,IALLON,MASKS(1)
COMMON /XGPID / XXGPID(8),MODFLG
COMMON /ZZZZZZ/ CORE(1)
COMMON /XGPI2 / LMPL,MPLPNT,MPL(1)
COMMON /XGPI3 / PVT(2)
COMMON /XGPI4 / IRTURN,INSERT,ISEQN,DMPCNT,
1 IDMPNT,DMPPNT,BCDCNT,LENGTH,ICRDTP,ICHAR,NEWCRD,
2 MODIDX,LDMAP,ISAVDW,DMAP(1)
COMMON /XVPS / VPS(2)
COMMON /AUTOSM/ NWORDS,SAVNAM(100)
EQUIVALENCE (CORE(1),OS(1),LOSCAR),(OS(2),OSPRC),
1 (OS(3),OSBOT),(OS(4),OSPNT),(OS(5),OSCAR(1))
C
DATA INDEX / 1,3,2,4/,
1 ISYNTX / 3*1,8,3*2,7,3*3,5,4*4,4*6/,
2 NVSTBL / 1,1,3,3,1,1,4,4,1,1,4,4,1,2,4,2/,
3 ITYPE / 1,1,2,2,2,4/,
4 IC /4HC /, IV/4HV /, IY /4HY /, IN/4HN /,
5 NVPS/4HVPS /, IS/4HS /, IASTK/4H* /,
6 NAME/1 /, IVAL/2/, NONE/1/, IMPL/2/, IDMAP/3/, IPVT/4/
C
C INITIALIZE
C
OR (I,J) = ORF(I,J)
AND(I,J) = ANDF(I,J)
ENDCRD = 0
IPRVOP = ISLSH
NOSPNT = OSCAR(OSPNT) + OSPNT
IOSPNT = NOSPNT + 1
OSCAR(NOSPNT) = 0
MPLBOT = MPL(MPLPNT-7) + MPLPNT - 7
C
C GET FIRST/NEXT TYPE AND MODIFY CODES FROM DMAP,CHECK FOR $
C
10 NEWTYP = 0
ISAVE = 0
15 CALL XSCNDM
GO TO (600,20,601,410,570), IRTURN
20 IF (DMAP(DMPPNT) .EQ. NBLANK) GO TO 15
OSCAR(NOSPNT) = 1 + OSCAR(NOSPNT)
J = DMAP(DMPPNT)
IF (J.NE.IC .AND. J.NE.IV .AND. J.NE.IS) GO TO 602
IF (J .EQ. IS) ISAVE = 1
I = 1
IF (J .EQ.IC) I = 2
CALL XSCNDM
GO TO (470,30,470,470,570), IRTURN
30 K = DMAP(DMPPNT)
IF (K.NE.IY .AND. K.NE.IN) GO TO 470
J = 1
IF (K.EQ.IN .OR. K.EQ.IS) J = 2
C
C USE I AND J TO OBTAIN ROW INDEX FOR SYNTAX TABLE.
C
75 I = INDEX(I,J)
C
C INITIALIZE IPVAL,AND ITMP WITH MPL DATA
C
IF (MPLPNT .GE. MPLBOT) GO TO 580
DO 40 K = 1,7
40 ITMP(K) = 0
ITMP(3) = IABS(MPL(MPLPNT))
C
C CONVERT PARAMETER TYPE CODE TO WORD LENGTH
C
K = ITMP(3)
MPLLN = ITYPE(K)
IPVAL = NONE
IF (MPL(MPLPNT) .LT. 0) GO TO 60
DO 50 K = 1,MPLLN
MPLPNT = MPLPNT + 1
50 ITMP(K+3) = MPL(MPLPNT)
IPVAL = IMPL
60 MPLPNT = MPLPNT + 1
IF (NEWTYP .EQ. 1) GO TO (620,100,110,120,570), IRTURN
C
C SCAN DMAP FOR PARAMETER NAME AND VALUE IF ANY, AND CODE DMAP ENTRY
C FOR USE AS COLUMN INDEX IN SYNTAX TABLE.
C
70 CALL XSCNDM
GO TO (90,100,110,120,570), IRTURN
90 IF (DMAP(DMPPNT+1).NE.IEQUL .AND. DMAP(DMPPNT+1).NE.ISLSH .AND.
1 DMAP(DMPPNT+1).NE.IASTK) GO TO 470
IF (DMAP(DMPPNT+1) .EQ. IASTK) GO TO 70
J = 2
IF (DMAP(DMPPNT+1).EQ.ISLSH) J = 4
GO TO 130
100 J = 1
C
C CHECK FOR BLANK
C
IF (DMAP(DMPPNT) .EQ. NBLANK) GO TO 70
GO TO 130
110 J = 3
GO TO 130
120 J = 5
C
C BRANCH ON SYNTAX TABLE VALUE
C
130 K = ISYNTX(I,J)
GO TO (140,180,210,280,200,290,470,190), K
C
C NAME FOUND. NAME TO TEMP,UPDATE PREVOP AND SEARCH PVT FOR VALUE.
C
140 IF (IPRVOP .EQ. IEQUL) GO TO 190
IF (IPRVOP .NE. ISLSH) GO TO 470
ITMP(1) = DMAP(DMPPNT )
ITMP(2) = DMAP(DMPPNT+1)
IPRVOP = NAME
C
C SCAN PVT
K = 3
150 L = ANDF(PVT(K+2),NOSGN)
L = ITYPE(L)
IF (DMAP(DMPPNT).EQ.PVT(K) .AND. DMAP(DMPPNT+1).EQ.PVT(K+1))
1 GO TO 160
K = K + 3 + L
IF (K-PVT(2)) 150,70,70
C
C CHECK LENGTH OF PVT VALUE
C
160 IPVAL = IPVT
PVT(K+2) = ORF(PVT(K+2),ISGNON)
IF (ANDF(PVT(K+2),NOSGN) .NE. ITMP(3)) GO TO 490
C
C TRANSFER VALUE TO ITMP
C
DO 170 M = 1,L
J = K + M + 2
170 ITMP(M+3) = PVT(J)
GO TO 70
C
C DMAP ENTRY IS = OPERATOR
C
180 IF (IPRVOP .NE. NAME) GO TO 470
IPRVOP = IEQUL
GO TO 70
C
C BCD PARAMETER VALUE FOUND
C
190 IF (ITMP(3) .NE. 3) GO TO 500
LENGTH = 2
DMPPNT = DMPPNT - 1
DMAP(DMPPNT) = ITMP(3)
GO TO 220
C
C DMAP ENTRY IS BINARY VALUE
C
200 IF (IPRVOP .EQ. ISLSH) GO TO 220
210 IF (IPRVOP .NE. IEQUL) GO TO 470
220 IPRVOP = IVAL
IF (IPVAL .EQ. IPVT) GO TO 70
C
C DMAP VALUE IS HIGHEST PRIORITY
C
IPVAL = IDMAP
IF (ANDF(DMAP(DMPPNT),NOSGN) .NE. ITMP(3)) GO TO 500
C
C TRANSFER DMAP VALUE TO ITMP
C
DO 270 M = 1,LENGTH
J = DMPPNT + M
270 ITMP(M+3) = DMAP(J)
GO TO 70
C
C DMAP ENTRY IS / OPERATOR
C
280 IF (IPRVOP .EQ. IEQUL) GO TO 470
IPRVOP = ISLSH
GO TO 300
C
C END OF DMAP INSTRUCTION
C
290 IF (IPRVOP .EQ. IEQUL) GO TO 470
C
C PARAMETER SCANNED,CHECK CORRECTNESS OF NAME AND VALUE AND
C PROCESS ITMP ACCORDING TO NVSTBL
C
300 IF (I.LT.4 .AND. ITMP(1).EQ.0) GO TO 510
K = NVSTBL(I,IPVAL)
C
GO TO (310,520,530,390), K
C
C VARIABLE PARAMETER,VALUE TO VPS,POINTER TO OSCAR
C
310 K = 3
320 IF (ITMP(1).EQ.VPS(K) .AND. ITMP(2).EQ.VPS(K+1)) GO TO 330
K = K + AND(VPS(K+2),MASKHI) + 3
IF (K-VPS(2)) 320,350,350
C
C PARAMETER IS ALREADY IN VPS - MAKE SURE TYPES AGREE.
C
330 L = ANDF(RSHIFT(VPS(K+2),16),15)
IF (L .EQ. 0) GO TO 335
IF (L .NE. ANDF(ITMP(3),15)) GO TO 555
C
C CHECK VALUE MODIFIED FLAG
C
335 IF (ANDF(MODFLG,VPS(K+2)) .EQ. 0) GO TO 340
C
C VALUE HAS BEEN MODIFIED FOR RESTART - DO NOT CHANGE.
C
GO TO 380
C
C CHECK IF PREVIOUSLY DEFINED
C
340 IF (VPS(K+2) .LT. 0) GO TO 540
GO TO 360
C
C NAME NOT IN VPS,MAKE NEW ENTRY
C
350 K = VPS(2) + 1
VPS(2) = K + 2 + MPLLN
IF (VPS(2)-VPS(1)) 360,360,560
C
C ITMP NAME,LENGTH,FLAG,VALUE TO VPS
C
360 L = MPLLN + 3
DO 370 M = 1,L
J = K + M - 1
370 VPS(J ) = ITMP(M)
VPS(K+2) = OR(MPLLN,LSHIFT(ITMP(3),16))
IF (IPVAL .EQ. IDMAP) VPS(K+2) = OR(VPS(K+2),ISGNON)
C
C LOCATION OF VALUE IN VPS TO OSCAR
C
380 OSCAR(IOSPNT) = K + 3
IF (ISAVE .NE. 1) GO TO 385
NWORDS = NWORDS + 1
SAVNAM(NWORDS) = K+3
385 CONTINUE
OSCAR(IOSPNT) = OR(OSCAR(IOSPNT),ISGNON)
IOSPNT = IOSPNT + 1
GO TO 10
C
C CONSTANT PARAMETER,VALUE TO OSCAR
C
390 OSCAR(IOSPNT) = MPLLN
DO 400 M = 1,MPLLN
J = IOSPNT + M
400 OSCAR(J) = ITMP(M+3)
IOSPNT = IOSPNT + MPLLN + 1
GO TO 10
C
C PROCESS ANY INTEGER, REAL, OR COMPLEX CONSTANTS
C
601 I = 2
J = 2
NEWTYP = 1
OSCAR(NOSPNT) = OSCAR(NOSPNT) + 1
GO TO 75
C
C PROCESS POSSIBLE DELIMITERS - SLASH AND ASTERISK
C
600 IF (DMAP(DMPPNT+1) .NE. IASTK) GO TO 610
CALL XSCNDM
GO TO (470,605,470,410,570), IRTURN
605 I = 2
J = 2
NEWTYP = 1
OSCAR(NOSPNT) = OSCAR(NOSPNT) + 1
GO TO 75
C
C PROCESS MPL DEFAULTS IF // IS ENCOUNTERED
C
610 IF (DMAP(DMPPNT+1) .NE. ISLSH) GO TO 470
I = 2
J = 2
NEWTYP = 1
OSCAR(NOSPNT) = OSCAR(NOSPNT) + 1
GO TO 75
C
C USE DEFAULT MPL VALUE FOR PARAMETER
C
620 IF (IPVAL .EQ. NONE) GO TO 470
OSCAR(IOSPNT) = MPLLN
DO 625 M = 1,MPLLN
J = IOSPNT + M
625 OSCAR(J) = ITMP(M+3)
IOSPNT = IOSPNT + MPLLN + 1
GO TO 10
C
C PROCESS V,N,NAME PARAMETER TYPES AS /NAME/
C
602 I = 1
J = 2
NEWTYP = 1
GO TO 75
C
C ALL PARAMETERS ON DMAP CARD PROCESSED,PROCESS ANY REMAINING ON
C MPL
C
410 IF (MPLPNT .GE. MPLBOT) GO TO 450
ENDCRD = 1
LENGTH = IABS(MPL(MPLPNT))
LENGTH = ITYPE(LENGTH)
OSCAR(NOSPNT) = 1 + OSCAR(NOSPNT)
IF (MPL(MPLPNT)) 530,480,420
420 OSCAR(IOSPNT) = LENGTH
DO 430 M = 1,LENGTH
J = IOSPNT + M
MPLPNT = MPLPNT + 1
430 OSCAR(J) = MPL(MPLPNT)
440 MPLPNT = MPLPNT + 1
IOSPNT = IOSPNT + LENGTH + 1
GO TO 410
C
C RETURN TO XOSGEN
C
450 OSCAR(OSPNT) = IOSPNT - OSPNT
IRTURN = 1
460 RETURN
C
C ERROR MESSAGES -
C
C DMAP CARD FORMAT ERROR
C
470 CALL XGPIDG (3,OSPNT,OSCAR(NOSPNT),0)
GO TO 450
C
C MPL PARAMETER ERROR
C
480 CALL XGPIDG (4,OSPNT,OSCAR(NOSPNT),0)
GO TO 450
C
C PARA CARD ERROR
C
490 CALL XGPIDG (5,0,ITMP(1),ITMP(2))
GO TO 70
C
C ILLEGAL DMAP PARAMETER VALUE
C
500 CALL XGPIDG (6,OSPNT,OSCAR(NOSPNT),0)
GO TO 70
C
C DMAP PARAMETER NAME MISSING
C
510 CALL XGPIDG (7,OSPNT,OSCAR(NOSPNT),0)
GO TO 390
C
C ILLEGAL PARA CARD
C
520 CALL XGPIDG (8,0,ITMP(1),ITMP(2))
IF (I-2) 310,310,390
C
C CONSTANT PARAMETER NOT DEFINED
C
530 CALL XGPIDG (9,OSPNT,OSCAR(NOSPNT),0)
IF (ENDCRD .EQ. 1) GO TO 440
GO TO 390
C
C WARNING - PARAMETER ALREADY HAD VALUE ASSIGNED PREVIOUSLY
C
540 IF (IPVAL .NE. IDMAP) GO TO 550
CALL XGPIDG (-42,OSPNT,ITMP(1),ITMP(2))
550 IF (AND(RSHIFT(VPS(K+2),16),15) .EQ. AND(ITMP(3),15)) GO TO 380
C
C INCONSISTENT LENGTH USED FOR VARIABLE PARAMETER.
C
555 CALL XGPIDG (15,OSPNT,ITMP(1),ITMP(2))
GO TO 380
C
C VPS TABLE OVERFLOW
C
560 CALL XGPIDG (14,NVPS,NBLANK,DMPCNT)
570 NOGO = 2
IRTURN = 2
GO TO 460
C
C TOO MANY PARAMETERS IN DMAP PARAMETER LIST.
C
580 CALL XGPIDG (18,OSPNT,0,0)
GO TO 450
END
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