Pascal News

1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1941
1942
1943
1944
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
repeat lip: =newident( types,nil,nil,+(90);
if lipnil then
begin next1f( eqsy, +(91);
lip· .idtype :=typ( fsys+[semicolon,identl);
nextif(semicolon,+092); enterid( lip);
end:
until not find2([identl,fsys,+093);
while fwptrnil do
begin assert syident;
id: =fwptr· .name; lip: =searchid ([ typesl);
fwptr· • idtype· .eltype: =lip· .idtype; fwptr: =fwptr· .next
end;
lntypedec: :false:
end;
procedure var.declaration( f3ys :S08);
var lip,hip,vip:ip; lsp:sp;
begin with b do begin
repeat hip:=nil; lip:=nil;
repeat vip: =newident(vars ,nil ,nil ,+094 );
if vipnil then
begin enterid(vip); vip· .iflag:=[];
if lip=nil then hip:=vip else lip· .next:=yip; lip:=vip;
end;
until endofloop( fsys+[colon1, ident •• packedsyl, [identl,comma,+095);
{+096)
nextif( colon1, +(97);
lsp:=typ( fsys+[semicolon,identl);
while hipnil do
begin hip· .idtype :=lsp;
hip· • vpos .ad: =address( lc ,sizeof( lsp) ,false); hip: =hip· .next
end;
next1f( semicolon ,+098);
until not find2 ([ identl, fsys, +(99);
end end;
procedure pfhe ad ( fs ys : so s ;
var fip:ip;
var again :boolean;
param:boolean); forward;
function parlist(fsys:sos; var hlc:integer):ip;
var lastip,hip,lip,pip:ip; lsp,tsp:sp; iflag:iflagset; again:boolean;
sz:integer;
begin parl1st:=nil; lastip:=nil;
repeat {once for each formal-parameter-section)
if find1 ([ ident, varsy ,procsy ,funcsyl,fsys+[semicolonl, +01 00) then
begin
if (sy=procsy) or (sy=funcsy) then
begin
pfhead (fsys+ [semicolon, ident, varsy .procsy, funcsyJ,
hip,again, true);
hip· .pfpos.ad: =address(hlc ,pnumsize+ptrsi ze ,false);
hip· .pfkind:=formal; lip:=hip;
top:=top· .nlink; level :=level-1
end
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
else
begin hip:=nil; lip:=nil; iflag:=[assigned,noregl;
if sy=varsy then
begin iflag:=[refer,assigned,used,noregl; insym end;
repeat pip:=newident( vars,nil,nil,+(101);
if pipnil then
begin enterid(pip); pip· .iflag:=iflag;
if lip=nil then hip:=pip else lip· .next:=pip;
lip:=pip;
end;
iflag: =iflag+[samesectl;
until endofloop( fsys+[semicolon,colon 1l,
[identl,comma,+(102); (+0103)
nextif(colon1, +01 04);
if refer in iflag then
begin lsp:=vpartyp(fsys+[semicolonl);
sz:=ptrsize; tsp:=lsp;
while formof(tsp,[carrayl) do
begin tsp· .arpos.ad :=address(hlc,ptrsize,false);
tsp:=tsp· .aeltype
end;
end
else
begin Isp:=typid(+0105); sz:=sizeof(lsp) end;
pip:=hip;
while pipnil do
begin pip· .vpos.ad: =address(hlc,sz,false);
pip· .idtype:=lsp; pip:=pip· .next
end;
end;
if lastip=nil then parlist:=hip else lastip· .next:=hip;
lastip:=lip;
end;
until endofloop(fsys, [ident,varsy,procsy,funcsyl,
semicolon ,+01 06); {+01071
end;
procedure pfhead; (forward declared)
var l1p:ip; ISp:sp; lnp:np; kl :idclass;
begin lip:=nil; again:=false;
if sy=procsy then kl: =proc else
begin kl:=func; fsys:=fsys+[colon1,identl end;
insym;
if syident then begin error(+0108); id:=spaces end;
if not param then lip:=searchsection(top· .fname);
if lipnil then
if (lip·.klasskl) or (lip· .pfkindforwrd) then
errid (+0109, id)
else
begin b.forwcount::b.forwcount-1; again:=true end;
if again then insym else
begin lip:=newip(kl,id,nil,nil);
if sy=ident then begin enterid(lip); insym end;
lastpfno: =lastpfno+1; lip· .pfno: =lastpfno;
end;
level: =level+ 1;
....
oc
....
-0
»
'" m
N
....