source: FOIAVistA/tag/r/TOOLKIT-AWCM-XD-XIN-XPAR-XQAB-XT-XUC-XUR-ZIN-ZTED/XINDX9.m@ 1424

XINDX9 ;SF/RWF - XINDEX SYNTAX CHECKER ;11/07/2002  14:57
 ;;7.3;TOOLKIT;**20,27,48,61,66,68**;Apr 25, 1995
 N CH1,EC,OP
 D PARSE S LI=0,AC=255 F %=0:0 S %=$O(LV(%)) Q:%'>0  S LI(%)=0
 Q
 ;LV is a set of Linked Values
PARSE K LV,LI S (ERR,LI,I)=0,(LL,LV)=1,(OP,CH)="",Q=""""
 ;
PA2 S I=I+1,CH=$E(STR,I),CH1=$E(STR,I+1) G:CH="" PEND
 G E:CH=";"!(CH'?1ANP) I """$()"[CH D QUOTE:CH=Q,FUNC:CH="$",DN:CH="(",UP:CH=")" G PA2
 I CH="^",CH1="$" D SSVN G PA2
 I CH="^",I=LL G PA2:CH1'="[" S I=I+1,X=$E(STR,LL,I) D ADD S LL=I+1 G PA2
 I CH?1A!(CH="%") D VAR G PA2
 I CH?1N D NUM G PA2
 S:"+-#'/*_&![]<>?"[CH OP=CH I CH="?",",!#"'[$E(STR,I-1) D AR,PAT G PA2
 I CH?1P D  ;Check for dup operators
 . D AR
 . Q:(CH_CH1="]]")
 . I ((CH=CH1)&(",_/\[]"[CH))&($$FNC()'="$$") D E^XINDX1(21)
 G PA2
 ;
DN D STR S X=CH D ADD,NEW S LI(LV)=LI,LV=LV+1 S:'$D(LI(LV)) LI(LV)=0 S LI=LI(LV),LI(LV-1,1)=LI
 Q
UP I LV<2 D E^XINDX1(5) Q
 D STR S EC=LI-LI(LV-1,1),X=$C(10) D ADD,NEW S LI(LV)=LI,LV=LV-1,LI=LI(LV)
 S X=EC D ADD S X=CH D ADD I CH1]"",",_=+-*/\#'):<>[]?&!@"'[CH1 D E^XINDX1(43)
 Q
NEW S LL=I+1
 Q
AR D STR S X=CH D ADD,NEW Q
STR S X=$E(STR,LL,I-1) Q:'$L(X)  ;Drop into ADD
ADD S LI=LI+1,LV(LV,LI)=X Q
 ;
FNC(NEW) ;Sets or returns the current function
 I $D(NEW) S LV(LV+1,"FNC",$G(LI(LV))+1)=NEW Q
 N W S W=+$S($D(LV(LV,"FNC",LI)):LI,1:$O(LV(LV,"FNC",LI),-1))
 Q $G(LV(LV,"FNC",W))
 ;
OP(NEW) ;Sets or returns the current operator
 I $D(NEW) S LV(LV,"OP",LI)=NEW Q
 N W S W=+$S($D(LV(LV,"OP",LI)):LI,1:$O(LV(LV,"OP",LI),-1))
 Q $G(LV(LV,"OP",W))
 ;
QUOTE F I=I+1:1 S CH=$E(STR,I) Q:CH=""!(CH=Q)
 I $E(STR,I+1)=Q S I=I+1 G QUOTE
 I OP'="?",$E(STR,I+1)]"","[]()<>\/+-=&!_#*,:'|"'[$E(STR,I+1) D E^XINDX1(46) Q
 Q:CH]""  D E^XINDX1(6) Q
GVAR() ;EF get var
 N % D VAR S %=$E(STR,LL,I),LL=I+1 Q %
VAR F J=I+1:1 S CH=$E(STR,J) Q:CH'?1AN
 S I=J-1 D SUM("V") Q
NUM F J=I+1:1 S CH=$E(STR,J) Q:"0123456789."'[CH!(CH="")
 I CH="E" S CH=$E(STR,J+1) I CH?1N!("+-"[CH) S I=J G NUM
 I CH]"",CH'?1P S ERR=53 D ^XINDX1
 S I=J-1 D SUM("N") Q
INC S I=I+1,CH=$E(STR,I)
 Q
FUNC D INC S X=CH,S=$$GVAR() G EXT:S["$$",PKG:S["$&",SPV:CH'="("
 S S=$E(S,2,11),F1=$G(IND("FNC",S)) I '$L(F1) D E^XINDX1(3) S F1=S G FX
 I "ZV"[X S ERR=$S("Z"[X:31,1:27) D ^XINDX1
FX S X="$"_F1,CH="" D FNC("$F"),ADD,SUM("F") Q
SPV S X=S D FNC("$V"),ADD,SUM("V") S X=$E(S,2,9),CH=""
 I $E(S,2)="Z" D E^XINDX1(28) Q
 I '$D(IND("SVN",X)) D E^XINDX1(4)
 Q
EXT ;EXTRINSIC
 S X=S,CH="" D FNC("$$"),ADD,SUM("V") Q
SSVN ;Error 54 access for Kernel only
 D INC S X=$$GVAR() I '$D(IND("SSVN",$E(X,3,99))) D E^XINDX1(4) Q  ;Need new #
 D E^XINDX1(54),ADD,SUM("V") Q
PKG ;External Function
 S J=$F(STR,"(",I),I=J-2,X=S_$E(STR,LL,I),LL=J-1,CH=""
 D ADD,E^XINDX1(55) ;Not standard VA
 Q
E S ERR=11 D ^XINDX1 Q  ;
PAT F I=I+1:1 S CH=$E(STR,I) D PATQ:CH=Q,PAREN:CH="(" I CH=""!(CH'?1N&("ACELNPUacelnpu."'[CH)) Q
 S I=I-1 I ":),@+-_*/\!&'"'[CH D E^XINDX1(16),SEP Q
 Q
PATQ F I=I+1:1 S CH=$E(STR,I) Q:CH=""!(CH=Q)
 S ERR=6,I=I+1,CH=$E(STR,I) D:$E(STR,I-1)="" ^XINDX1 G:CH=Q PATQ
 Q
PAREN F I=I+1:1 S CH=$E(STR,I) Q:CH=""!(CH=")")
 D:CH="" E^XINDX1(5) S CH="."
 Q
PEND D AR,E^XINDX1(5):LV>1,E^XINDX1(21):($G(LV(1,1))=",") ;LV>1 means mis-match ()
 Q
SEP ;Find sep
 Q
SUM(P) ;Build summry line
 S LV(LV,"S")=$G(LV(LV,"S"))_P
 Q
TEST S STR="@^(0)" D XINDX9