public Obj Copy(int idx1, int idx2, int idx3)
{
if (count == 0)
{
return(EmptyRelObj.Singleton());
}
Obj[] objs1 = new Obj[count];
Obj[] objs2 = new Obj[count];
Obj[] objs3 = new Obj[count];
int len = tuples.Length;
int next = 0;
for (uint i = 0; i < len; i++)
{
Tuple tuple = tuples[i];
if (tuple.field2OrEmptyMarker != Tuple.Empty)
{
objs1[next] = store1.GetValue(tuple.field1OrNext);
objs2[next] = store2.GetValue(tuple.field2OrEmptyMarker);
objs3[next] = store3.GetValue(tuple.field3);
next++;
}
}
Miscellanea.Assert(next == count);
Obj[][] cols = new Obj[3][];
cols[idx1] = objs1;
cols[idx2] = objs2;
cols[idx3] = objs3;
return(Builder.CreateTernRel(cols[0], cols[1], cols[2], count));
}
public static Obj CreateSet(Obj[] objs, long count)
{
Miscellanea.Assert(objs.Length >= count);
if (count != 0)
{
Obj[] norm_objs = Algs.SortUnique(objs, (int)count);
return(new NeSetObj(norm_objs));
}
else
{
return(EmptyRelObj.Singleton());
}
}
public static Obj CreateBinRel(Obj[] col1, Obj[] col2, long count)
{
Miscellanea.Assert(count <= col1.Length & count <= col2.Length);
if (count != 0)
{
Obj[] norm_col_1, norm_col_2;
Algs.SortUnique(col1, col2, (int)count, out norm_col_1, out norm_col_2);
return(new NeBinRelObj(norm_col_1, norm_col_2, !Algs.SortedArrayHasDuplicates(norm_col_1)));
}
else
{
return(EmptyRelObj.Singleton());
}
}
public static Obj CreateTernRel(Obj[] col1, Obj[] col2, Obj[] col3, long count)
{
Miscellanea.Assert(count <= col1.Length && count <= col2.Length && count <= col3.Length);
if (col1.Length != 0)
{
Obj[] norm_col_1, norm_col_2, norm_col_3;
Algs.SortUnique(col1, col2, col3, (int)count, out norm_col_1, out norm_col_2, out norm_col_3);
return(new NeTernRelObj(norm_col_1, norm_col_2, norm_col_3));
}
else
{
return(EmptyRelObj.Singleton());
}
}
public Obj Copy(bool flipped)
{
int count = table1.count;
if (count == 0)
{
return(EmptyRelObj.Singleton());
}
Obj[] objs1 = new Obj[count];
Obj[] objs2 = new Obj[count];
int next = 0;
for (uint i = 0; i < table1.column.Length; i++)
{
uint code = table1.column[i];
if (code != OverflowTable.EmptyMarker)
{
Obj val1 = store1.GetValue(i);
if (code >> 29 == 0)
{
objs1[next] = val1;
objs2[next++] = store2.GetValue(code);
}
else
{
OverflowTable.Iter it = table1.overflowTable.GetIter(code);
while (!it.Done())
{
uint surr2 = it.Get();
objs1[next] = val1;
objs2[next++] = store2.GetValue(surr2);
it.Next();
}
}
}
}
Miscellanea.Assert(next == count);
return(Builder.CreateBinRel(flipped ? objs2 : objs1, flipped ? objs1 : objs2, count)); //## THIS COULD BE MADE MORE EFFICIENT
}
public Obj Copy()
{
if (count == 0)
{
return(EmptyRelObj.Singleton());
}
Obj[] objs = new Obj[count];
int next = 0;
for (uint i = 0; i < bitmap.Length; i++)
{
ulong mask = bitmap[i];
for (uint j = 0; j < 64; j++)
{
if (((mask >> (int)j) & 1) != 0)
{
objs[next++] = store.GetValue(j + 64 * i);
}
}
}
Miscellanea.Assert(next == count);
return(Builder.CreateSet(objs, objs.Length));
}
override public Obj AsObj()
{
return(EmptyRelObj.Singleton());
}
////////////////////////////////////////////////////////////////////////////////
static long ParseUnordColl(Token[] tokens, long offset, out Obj var)
{
int length = tokens.Length;
if (++offset >= length)
{
var = null;
return(-offset - 1);
}
if (tokens[offset].type == TokenType.CloseBracket)
{
var = EmptyRelObj.Singleton();
return(offset + 1);
}
State state = new State(1);
offset = ReadList(tokens, offset, TokenType.Comma, TokenType.Whatever, ReadObj, state);
if (offset < 0)
{
var = null;
return(offset);
}
TokenType type = tokens[offset++].type;
int count = state.Count();
bool isMap = type == TokenType.Arrow & count == 1;
bool isRel = type == TokenType.Semicolon & (count == 2 | count == 3);
if (isMap)
{
offset = ReadObj(tokens, offset, state);
if (offset >= length)
{
offset = -offset - 1;
}
if (offset < 0)
{
var = null;
return(offset);
}
type = tokens[offset++].type;
}
else if (isRel && offset < length && tokens[offset].type == TokenType.CloseBracket)
{
type = TokenType.CloseBracket;
offset++;
}
if (type == TokenType.CloseBracket)
{
count = state.Count();
if (isMap | (isRel & count == 2))
{
var = Builder.CreateBinRel(state.cols[0][0], state.cols[0][1]);
}
else if (isRel)
{
var = Builder.CreateTernRel(state.cols[0][0], state.cols[0][1], state.cols[0][2]);
}
else
{
var = Builder.CreateSet(state.cols[0]);
}
return(offset);
}
if (isMap | isRel)
{
Obj[] entry = new Obj[3];
for (int i = 0; i < state.Count(); i++)
{
entry[i] = state.cols[0][i];
}
return(ParseRelTail(tokens, offset, (uint)state.Count(), entry, isMap, out var));
}
var = null;
return(-offset);
}