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* integer constant -> integer para enhanced to search the best matching

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procedure, just like delphi does (merged)
This commit is contained in:
peter 2000-08-15 03:43:24 +00:00
parent b4c1794b34
commit 32bedb114d
1 changed files with 80 additions and 3 deletions
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83
compiler/tccal.pas
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@ -429,12 +429,15 @@ implementation
{ all types can be passed to a formaldef }
is_equal:=(def^.deftype=formaldef) or
(types.is_equal(p^.resulttype,def))
{ integer constants are compatible with all integer parameters }
{ integer constants are compatible with all integer parameters if
the specified value matches the range }
or
(
(p^.left^.treetype=ordconstn) and
is_integer(p^.resulttype) and
is_integer(def)
is_integer(def) and
(p^.left^.value>=porddef(def)^.low) and
(p^.left^.value<=porddef(def)^.high)
)
{ to support ansi/long/wide strings in a proper way }
{ string and string[10] are assumed as equal }
@ -482,6 +485,7 @@ implementation
var
is_const : boolean;
i : longint;
bestord : porddef;
begin
{ release registers! }
{ if procdefinition<>nil then we called firstpass already }
@ -916,6 +920,75 @@ implementation
end;
end;
{ Check if there are integer constant to integer
parameters then choose the best matching integer
parameter and remove the others, this is Delphi
compatible. 1 = byte, 256 = word, etc. }
if assigned(procs) and assigned(procs^.next) then
begin
{ reset nextpara for all procs left }
hp:=procs;
while assigned(hp) do
begin
hp^.nextpara:=hp^.firstpara;
hp:=hp^.next;
end;
pt:=p^.left;
while assigned(pt) do
begin
bestord:=nil;
if (pt^.left^.treetype=ordconstn) and
is_integer(pt^.resulttype) then
begin
hp:=procs;
while assigned(hp) do
begin
def_to:=hp^.nextpara^.paratype.def;
{ to be sure, it couldn't be something else,
also the defs here are all in the range
so now find the closest range }
if not is_integer(def_to) then
internalerror(43297815);
if (not assigned(bestord)) or
((porddef(def_to)^.low>bestord^.low) or
(porddef(def_to)^.high<bestord^.high)) then
bestord:=porddef(def_to);
hp:=hp^.next;
end;
end;
{ if a bestmatch is found then remove the other
procs which don't match the bestord }
if assigned(bestord) then
begin
hp:=procs;
procs:=nil;
while assigned(hp) do
begin
hp2:=hp^.next;
{ keep matching bestord, dispose the others }
if (porddef(hp^.nextpara^.paratype.def)=bestord) then
begin
hp^.next:=procs;
procs:=hp;
end
else
dispose(hp);
hp:=hp2;
end;
end;
{ update nextpara for all procedures }
hp:=procs;
while assigned(hp) do
begin
hp^.nextpara:=pparaitem(hp^.nextpara^.next);
hp:=hp^.next;
end;
pt:=pt^.right;
end;
end;
{ Check if there are convertlevel 1 and 2 differences
left for the parameters, then discard all convertlevel
2 procedures. The value of convlevelXfound can still
@ -1260,7 +1333,11 @@ implementation
end.
{
$Log$
Revision 1.7 2000-08-13 14:53:32 peter
Revision 1.8 2000-08-15 03:43:24 peter
* integer constant -> integer para enhanced to search the best matching
procedure, just like delphi does (merged)
Revision 1.7 2000/08/13 14:53:32 peter
* integer constant is equal with all integer type arguments (merged)
Revision 1.6 2000/08/13 12:54:56 peter