/*
* private void ReplaceHead(object valu)
* {
* fis.SetOffset(this.offset);
* switch (typ.Vid)
* {
* case PTypeEnumeration.none: break;
* case PTypeEnumeration.boolean: fis.bw.Write((bool)valu);
* case PTypeEnumeration.character: fis.bw.Write((short)valu);
* case PTypeEnumeration.integer: fis.bw.Write((int)valu);
* case PTypeEnumeration.longinteger: fis.bw.Write((long)valu);
* case PTypeEnumeration.real: fis.bw.Write((double)valu);
* case PTypeEnumeration.sstring:
* {
* int len = fis.br.ReadInt32();
* long off = fis.br.ReadInt64();
* if (len > 0)
* {
* fis.SetOffset(off);
* byte[] b = fis.br.ReadBytes(len * 2);
* return Encoding.Unicode.GetString(b);
* }
* else return "";
* }
* case PTypeEnumeration.record:
* {
* PTypeRecord r_tp = (PTypeRecord)typ;
* object[] fields = new object[r_tp.Fields.Length];
* long off = offse;
* for (int i = 0; i < r_tp.Fields.Length; i++)
* {
* PType ftyp = r_tp.Fields[i].Type;
* fields[i] = GetPObject(ftyp, off, fis);
* off += ftyp.HeadSize;
* }
* return fields;
* }
* case PTypeEnumeration.sequence:
* {
* PTypeSequence mts = (PTypeSequence)typ;
* PType tel = mts.ElementType;
* long llen = fis.br.ReadInt64();
* fis.br.ReadInt64();
* long off = fis.br.ReadInt64();
* object[] els = new object[llen];
* for (long ii = 0; ii < llen; ii++)
* {
* els[ii] = GetPObject(tel, off, fis);
* off += tel.HeadSize;
* }
* return els;
* }
* case PTypeEnumeration.union:
* {
* PTypeUnion mtu = (PTypeUnion)typ;
* int v = fis.br.ReadByte();
* long off = fis.br.ReadInt64();
* PType mt = mtu.Variants[v].Type;
* if (mt.IsAtom) return new object[] { v, GetPObject(mt, offse + 1, fis) };
* else return new object[] { v, GetPObject(mt, off, fis) };
* }
*
* default: throw new Exception("Err in TPath Get(): type is not implemented " + typ.Vid);
* }
* }
*/
private static object GetPObject(PType typ, long offse, PxCell fis)
{
fis.SetOffset(offse);
switch (typ.Vid)
{
case PTypeEnumeration.none: return(null);
case PTypeEnumeration.boolean: return(fis.br.ReadBoolean());
case PTypeEnumeration.character: return(fis.br.ReadChar());
case PTypeEnumeration.integer: return(fis.br.ReadInt32());
case PTypeEnumeration.longinteger: return(fis.br.ReadInt64());
case PTypeEnumeration.real: return(fis.br.ReadDouble());
case PTypeEnumeration.@byte: return(fis.br.ReadByte());
case PTypeEnumeration.sstring:
{
int len = fis.br.ReadInt32();
long off = fis.br.ReadInt64();
if (len > 0)
{
fis.SetOffset(off);
byte[] b = fis.br.ReadBytes(len * 2);
return(Encoding.Unicode.GetString(b));
}
else
{
return("");
}
}
case PTypeEnumeration.fstring:
{
int size = ((PTypeFString)typ).Size;
byte[] arr = new byte[size];
arr = fis.br.ReadBytes(size);
int count = size / 2;
while (count > 0 && arr[2 * count - 1] == 0 && arr[2 * count - 2] == 0)
{
count--;
}
string s = System.Text.Encoding.Unicode.GetString(arr, 0, 2 * count);
return(s);
}
case PTypeEnumeration.record:
{
PTypeRecord r_tp = (PTypeRecord)typ;
object[] fields = new object[r_tp.Fields.Length];
long off = offse;
for (int i = 0; i < r_tp.Fields.Length; i++)
{
PType ftyp = r_tp.Fields[i].Type;
fields[i] = GetPObject(ftyp, off, fis);
off += ftyp.HeadSize;
}
return(fields);
}
case PTypeEnumeration.sequence:
{
PTypeSequence mts = (PTypeSequence)typ;
PType tel = mts.ElementType;
long llen = fis.br.ReadInt64();
fis.br.ReadInt64();
long off = fis.br.ReadInt64();
object[] els = new object[llen];
for (long ii = 0; ii < llen; ii++)
{
els[ii] = GetPObject(tel, off, fis);
off += tel.HeadSize;
}
return(els);
}
case PTypeEnumeration.union:
{
PTypeUnion mtu = (PTypeUnion)typ;
int v = fis.br.ReadByte();
PType mt = mtu.Variants[v].Type;
long off = fis.br.ReadInt64();
if (mt.IsAtom)
{
return new object[] { v, off == -1L
? null
: fis.ReadAtomFromLong(mt.Vid, offse + 1) }
}
;
else
{
return(new object[] { v, GetPObject(mt, off, fis) });
}
}
default: throw new Exception("Err in TPath Get(): type is not implemented " + typ.Vid);
}
}
public PxCell fis; //TODO: Надо защитить это поле
public PxEntry(PType tp, long offset, PxCell fis)
{
this.typ = tp;
this.offset = offset;
this.fis = fis;
}