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+ AssignAnsistring no longer copies constant ansistrings;

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+ CompareAnsiString is now faster (1 call to length less)
+ UniqueAnsiString is fixed.
This commit is contained in:
michael 1998-10-22 11:32:23 +00:00
parent a72309bec9
commit a643c03805
1 changed files with 17 additions and 8 deletions
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25
rtl/inc/astrings.pp
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@ -163,11 +163,11 @@ Var SNew : Pointer;
begin
If Pointer(S)=Nil
then exit;
if PAnsiRec(Pointer(S)-Firstoff)^.Ref>1 then
if PAnsiRec(Pointer(S)-Firstoff)^.Ref<>1 then
begin
SNew:=NewAnsiString (PAnsiRec(Pointer(S)-FirstOff)^.len);
Move (Pointer(S)^,SNew^,PAnsiRec(Pointer(S)-FirstOff)^.len+1);
PAnsiRec(SNew-8)^.len:=PAnsiRec(Pointer(S)-FirstOff)^.len;
PAnsiRec(SNew-FirstOff)^.len:=PAnsiRec(Pointer(S)-FirstOff)^.len;
Decr_Ansi_Ref (Pointer(S)); { Thread safe }
Pointer(S):=SNew;
end;
@ -187,10 +187,13 @@ begin
begin
If PAnsiRec(S2-FirstOff)^.Ref<0 then
begin
{ S2 is a constant string, Create new string with copy. }
// We remove the copy. If a string is a constant string,
// Then assigning shouldn't make a copy. Only when writing !!
{ S2 is a constant string, Create new string with copy.
Temp:=Pointer(NewAnsiString(PansiRec(S2-FirstOff)^.Len));
Move (S2^,Temp^,PAnsiRec(S2-FirstOff)^.len+1);
PAnsiRec(Temp-FirstOff)^.Len:=PAnsiRec(S2-FirstOff)^.len;
PAnsiRec(Temp-FirstOff)^.Len:=PAnsiRec(S2-FirstOff)^.len;}
temp:=S2;
end
else
begin
@ -332,10 +335,11 @@ Function AnsiCompare(S1,S2 : Pointer): Longint;[Public,Alias : 'FPC_ANSICOMPARE'
Var i,MaxI,Temp : Longint;
begin
Temp:=0;
i:=0;
MaxI:=Length(AnsiString(S1));
if MaxI>Length(AnsiString(S2)) then MaxI:=Length(AnsiString(S2));
Maxi:=Length(AnsiString(S1));
temp:=Length(AnsiString(S2));
If MaxI>Temp then MaxI:=Temp;
Temp:=0;
While (i<MaxI) and (Temp=0) do
begin
Temp:= PByte(S1+I)^ - PByte(S2+i)^;
@ -717,7 +721,12 @@ end;
{
$Log$
Revision 1.23 1998-10-21 23:01:54 michael
Revision 1.24 1998-10-22 11:32:23 michael
+ AssignAnsistring no longer copies constant ansistrings;
+ CompareAnsiString is now faster (1 call to length less)
+ UniqueAnsiString is fixed.
Revision 1.23 1998/10/21 23:01:54 michael
+ Some more corrections
Revision 1.22 1998/10/21 09:03:11 michael