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{
This file is part of the Free Pascal run time library.
Copyright (c) 2011 by Jonas Maebe,
members of the Free Pascal development team.
This file implements support infrastructure for sets under the JVM
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
function FpcBitSet.clone: JLObject;
begin
result:=inherited;
end;
function FpcBitSet.add(elem: jint): FpcBitSet;
begin
&set(elem);
result:=self;
end;
function FpcBitSet.addAll(s: FpcBitSet): FpcBitSet;
begin
&or(s);
result:=self;
end;
function FpcBitSet.remove(elem: jint): FpcBitSet;
begin
clear(elem);
result:=self;
end;
function FpcBitSet.removeAll(s: FpcBitSet): FpcBitSet;
begin
andnot(s);
result:=self;
end;
function FpcBitSet.retainAll(s: FpcBitSet): FpcBitSet;
begin
&and(s);
result:=self;
end;
function FpcBitSet.contains(elem: jint): boolean;
begin
result:=get(elem);
end;
function FpcBitSet.containsAll(s: FpcBitSet): boolean;
var
tmp: FpcBitSet;
begin
tmp:=FpcBitSet(clone);
tmp.&and(s);
result:=tmp.equals(s);
end;
function FpcBitSet.symdif(s: FpcBitSet): FpcBitSet;
begin
s.&xor(s);
result:=self;
end;
class function FpcBitSet.range(start, stop: jint): FpcBitSet;
begin
result:=FpcBitSet.create(stop);
result.&set(start,stop+1);
end;
class function FpcBitSet.&of(elem: jint): FpcBitSet;
begin
result:=FpcBitSet.create(elem);
result.&set(elem);
end;
procedure fpc_bitset_copy(const src: FpcBitSet; dst: FpcBitSet); compilerproc;
begin
dst.clear();
dst.&or(src);
end;
procedure fpc_enumset_copy(const src: JUEnumSet; dst: JUEnumSet); compilerproc;
begin
dst.clear();
dst.addAll(src);
end;
function fpc_enumset_symdif(const set1, set2: JUEnumSet): JUEnumSet; compilerproc;
var
tmp: JUEnumSet;
begin
{ (set1 + set 2) - (set1 * set2) }
result:=JUEnumSet(set1.clone);
result.addAll(set2);
tmp:=JUEnumSet(set1.clone);
tmp.retainAll(set2);
result.removeAll(tmp);
end;
function fpc_bitset_from_string(const s: unicodestring): FpcBitSet; compilerproc;
var
i, bits: longint;
wc: word;
begin
{ all bits are encoded in the string characters }
result:=FpcBitSet.Create(cardinal(length(s)+15) div 16);
for i:=1 to length(s) do
begin
wc:=word(s[i]);
if wc=0 then
continue;
for bits:=15 downto 0 do
if (wc and (1 shl bits)) <> 0 then
result.&set((i-1)*16+15-bits);
end;
end;
function fpc_enumset_from_string(dummy: FpcEnumValueObtainable; const s: unicodestring): JUEnumSet; compilerproc;
var
i, bits: longint;
wc: word;
begin
{ all bits are encoded in the string characters }
result:=JUEnumSet.noneOf(JLObject(dummy).getClass);
for i:=1 to length(s) do
begin
wc:=word(s[i]);
if wc=0 then
continue;
for bits:=15 downto 0 do
if (wc and (1 shl bits)) <> 0 then
result.add(dummy.fpcGenericValueOf((i-1)*16+15-bits));
end;
end;
function fpc_enumset_to_int(const s: JUEnumSet; setbase, setsize: longint): jint; compilerproc;
var
it: JUIterator;
ele: FpcEnumValueObtainable;
val: longint;
begin
it:=s.iterator;
result:=0;
setsize:=setsize*8;
while it.hasNext do
begin
ele:=FpcEnumValueObtainable(it.next);
val:=ele.fpcOrdinal-setbase;
result:=result or (1 shl (setsize-val));
end;
end;
function fpc_enumset_to_long(const s: JUEnumSet; setbase, setsize: longint): jlong; compilerproc;
var
it: JUIterator;
ele: FpcEnumValueObtainable;
val: longint;
begin
it:=s.iterator;
result:=0;
setsize:=setsize*8;
while it.hasNext do
begin
ele:=FpcEnumValueObtainable(it.next);
val:=ele.fpcOrdinal-setbase;
result:=result or (1 shl (setsize-val));
end;
end;
function fpc_bitset_to_int(const s: FpcBitSet; setbase, setsize: longint): jint; compilerproc;
var
i, val: longint;
begin
result:=0;
setsize:=setsize*8;
i:=s.nextSetBit(0);
while i>=0 do
begin
val:=i-setbase;
result:=result or (1 shl (setsize-val));
i:=s.nextSetBit(i+1);
end;
end;
function fpc_bitset_to_long(const s: FpcBitSet; setbase, setsize: longint): jlong; compilerproc;
var
i, val: longint;
begin
result:=0;
setsize:=setsize*8;
i:=s.nextSetBit(0);
while i>=0 do
begin
val:=i-setbase;
result:=result or (1 shl (setsize-val));
i:=s.nextSetBit(i+1);
end;
end;
function fpc_int_to_bitset(const val: jint; setbase, setsize: jint): FpcBitSet; compilerproc;
var
i, setval: jint;
begin
result:=FpcBitSet.create;
if val<>0 then
begin
setsize:=setsize*8;
for i:=0 to setsize-1 do
if (val and (jint(1) shl (setsize-i)))<>0 then
result.&set(i+setbase);
end;
end;
function fpc_long_to_bitset(const val: jint; setbase, setsize: jint): FpcBitSet; compilerproc;
var
i, setval: jint;
begin
result:=FpcBitSet.create;
if val<>0 then
begin
setsize:=setsize*8;
for i:=0 to setsize-1 do
if (val and (jlong(1) shl (setsize-i)))<>0 then
result.&set(i+setbase);
end;
end;
function fpc_enumset_to_bitset(const val: JUEnumSet; fromsetbase, tosetbase: jint): FpcBitSet; compilerproc;
var
it: JUIterator;
ele: FpcEnumValueObtainable;
i: longint;
begin
result:=FpcBitSet.Create;
it:=val.iterator;
while it.hasNext do
begin
ele:=FpcEnumValueObtainable(it.next);
i:=ele.fpcOrdinal-fromsetbase;
result.&set(i+tosetbase);
end;
end;
function fpc_bitset_to_bitset(const s: FpcBitSet; fromsetbase, tosetbase: jint): FpcBitSet; compilerproc;
var
i, val: longint;
begin
result:=FpcBitSet.create;
i:=s.nextSetBit(0);
while i>=0 do
begin
val:=i-fromsetbase;
result.&set(val+tosetbase);
i:=s.nextSetBit(i+1);
end;
end;
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