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subroutine getfunction
c Copyright INRIA
include '../stack.h'
parameter (nz1=nsiz-1,nz2=nsiz-2,nz3=nsiz-3)
integer cblock,rblock,fcount
parameter (rblock=30,cblock=rblock*50)
integer quote,eol,equal,lparen,rparen,comma,semi,left,right,dot
integer blank,slash
integer psym,qcount,strcnt,pchar
integer func(nsiz),endfunc(nsiz),iadr,sadr
logical cresmat,eqid,last,eof
integer name,num,cmt
data quote/53/,eol/99/,name/1/,num/0/,cmt/2/
data equal/50/,lparen/41/,rparen/42/,slash/48/
data comma/52/,semi/43/,left/54/,right/55/,dot/51/,blank/40/
data func/202841615,387453469,nz2*673720360/
data endfunc/252516110,487331614,672602130,nz3*673720360/
c
iadr(l)=l+l-1
sadr(l)=(l/2)+1
c
c
last=.false.
fcount=1
if(top+3.ge.bot) then
call error(18)
return
endif
c syntax line
l4=lpt(4)-1
c analysing syntax to get the end of syntax definition
call getsym
if(sym.eq.name) then
c . a=func(..) or func(..) syntaxes
if(char1.eq.equal) then
c . a=func(..)
call getsym
call getsym
endif
elseif(sym.eq.left) then
c . [..]=func()
41 call getsym
if(sym.ne.name) goto 42
call getsym
if(sym.eq.comma) goto 41
42 if(sym.ne.right) goto 50
c
call getsym
if(sym.ne.equal) goto 50
call getsym
else
goto 50
endif
c lhs analyzed
if(sym.ne.name) goto 50
c
call getsym
if(sym.eq.eol.or.sym.eq.cmt.or.sym.eq.semi.or.sym.eq.comma) then
lpt(4)=lpt(3)
goto 46
endif
if(sym.ne.lparen) goto 50
44 call getsym
if(sym.ne.name) goto 45
call getsym
if(sym.eq.comma) goto 44
45 if(sym.ne.rparen) goto 50
c ok, check is next sym is valid
call getsym
if(sym.ne.eol.and.sym.ne.semi.and.
$ sym.ne.comma.and.sym.ne.cmt) goto 50
lpt(4)=lpt(3)
46 continue
c rhs analyzed
lf=lpt(4)
if(sym.ne.eol) lf=lf-1
if(sym.eq.cmt) then
sym=semi
char1=slash
endif
n=lf-l4
goto 60
50 continue
c invalid syntax
err=lct(8)
call error(37)
lct(8)=1
return
60 if(comp(1).ne.0) then
c . str instruction added to store the syntax line
lkp=comp(1)
err=sadr(lkp+2+n)-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
istk(lkp)=3
l=lkp+2
l0=lkp+1
istk(lkp+1)=n
call icopy(n,lin(l4),1,istk(l),1)
comp(1)=l+n
ilc=(l+n)
else
top=top+1
if (.not.cresmat("getfunction",top,1,1,n)) return
l=iadr(lstk(top))+6
call icopy(n,lin(l4),1,istk(l),1)
ilc=iadr(lstk(top+1))
endif
c
c statements of the function
nc=0
nr=0
ilp=ilc+cblock
ilw=ilp+rblock
err=sadr(ilw)-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
istk(ilp)=1
strcnt=0
if(sym.eq.eol) then
if (lpt(4).ge.lpt(6)) then
if(comp(1).ne.0) then
call getlin(2,0)
eof=.false.
else
call getlin(2,0)
eof=fin.eq.-2
endif
else
eof=.false.
lpt(4)=lpt(4)+1
call getsym
endif
else
eof=.false.
endif
l4=lpt(4)-1
psym=sym
71 continue
psym=sym
call getsym
if(sym.eq.quote) then
if(strcnt.ne.0) then
qcount=0
311 qcount=qcount+1
if(abs(char1).ne.quote) goto 312
call getsym
goto 311
312 continue
if(2*int(qcount/2).ne.qcount) strcnt=0
else
pchar=lin(lpt(3)-2)
if(abs(pchar).eq.blank) then
strcnt=1
elseif(psym.ne.num.and.psym.ne.name.and.psym.ne.rparen.and.
$ psym.ne.right.and.psym.ne.dot.and.psym.ne.quote)
$ then
strcnt=1
endif
endif
goto 71
elseif(sym.eq.name) then
if(strcnt.eq.0.and.eqid(syn,func)) then
fcount=fcount+1
elseif(strcnt.eq.0.and.eqid(syn,endfunc)) then
if(fcount.eq.1) then
last=.true.
n=lpt(3)-1-l4
c lpt(4)=lpt(4)-1
goto 72
endif
fcount=fcount-1
endif
goto 71
elseif(sym.eq.eol) then
n=lpt(4)-l4
if (eof) then
c . endfunction omitted
if(macr.eq.0) then
last=.true.
goto 72
else
call error(272)
return
endif
endif
goto 72
elseif(strcnt.eq.0.and.sym.eq.cmt) then
lpt(4)=lpt(6)
n=lpt(4)-l4
goto 72
else
goto 71
endif
c store a line
72 continue
if(last.and.n.le.0) goto 73
if(ilp+nr+1.ge.ilw) then
c . allocate memory for rblock more rows
ilw=ilw+rblock
err=sadr(ilw)-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
endif
if(ilc+nc+n.ge.ilp) then
c . allocate memory for cblock more characters
ilp1=ilc+nc+n+cblock
ilw=ilp1+(ilw-ilp)
err=sadr(ilw)-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
call icopy(nr+1,istk(ilp),-1,istk(ilp1),-1)
ilp=ilp1
endif
istk(ilp+nr+1)=istk(ilp+nr)+n
call icopy(n,lin(l4),1,istk(ilc+nc),1)
nc=nc+n
nr=nr+1
if(.not.last) then
if(lpt(4).ge.lpt(6)) then
call getlin(2,0)
eof=fin.eq.-2
l4=lpt(1)
else
lpt(4)=lpt(4)+1
call getsym
l4=lpt(4)
endif
goto 71
endif
c
73 continue
c call getsym
il=ilc
ilp1=il+2
ilc1=ilp1+nr+1
ilp1=il+4
ilc1=ilp1+nr+1
ilw1=ilw
err=sadr(ilw1+nc)-lstk(bot)
if(err.gt.0) then
call error(17)
return
endif
call icopy(nc,istk(ilc),1,istk(ilw1),1)
inc=-1
if(ilp.ge.ilp1) inc=1
call icopy(nr+1,istk(ilp),inc,istk(ilp1),inc)
call icopy(nc,istk(ilw1),1,istk(ilc1),1)
if(comp(1).ne.0) then
istk(il)=26
istk(il+1)=nr
istk(il+2)=1
istk(il+3)=0
comp(1)=ilc1+nc
call setlnb
else
top=top+1
istk(il)=10
istk(il+1)=nr
istk(il+2)=1
istk(il+3)=0
lstk(top+1)=sadr(ilc1+nc)
endif
c
return
end
|
