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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
integer func(nsiz),endfunc(nsiz),iadr,sadr
logical cresmat,eqid,last,eof
data quote/53/,eol/99/,name/1/
data equal/50/,lparen/41/,rparen/42/
data comma/52/,semi/43/,left/54/,right/55/
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 n=lpt(6)-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
if(char1.eq.semi.or.char1.eq.comma) goto 46
call getsym
if(sym.eq.eol) goto 46
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
call getsym
if(sym.ne.eol.and.sym.ne.semi.and.sym.ne.comma) goto 50
46 continue
c rhs analyzed
n=lpt(4)-l4
goto 60
50 continue
c invalid syntax
err=lct(8)
call error(37)
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
if(sym.eq.eol) then
call getlin(2)
eof=fin.eq.-2
endif
l4=lpt(4)-1
71 call getsym
if(sym.eq.name) then
if(eqid(syn,func)) then
fcount=fcount+1
elseif(eqid(syn,endfunc)) then
if(fcount.eq.1) then
last=.true.
n=lpt(3)-1-l4
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
last=.true.
goto 72
endif
goto 72
else
goto 71
endif
c store a line
72 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
call getlin(2)
eof=fin.eq.-2
l4=lpt(1)
goto 71
endif
c
73 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
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