| public static pack4 ( byte arr, int offs, int val ) : void | ||
| arr | byte | |
| offs | int | |
| val | int | |
| return | void | |
internal void pack(Page pg, int i)
{
byte[] dst = pg.data;
switch (key.type)
{
case ClassDescriptor.FieldType.tpBoolean:
case ClassDescriptor.FieldType.tpSByte:
case ClassDescriptor.FieldType.tpByte:
dst[OldBtreePage.firstKeyOffs + i] = (byte)key.ival;
break;
case ClassDescriptor.FieldType.tpShort:
case ClassDescriptor.FieldType.tpUShort:
case ClassDescriptor.FieldType.tpChar:
Bytes.pack2(dst, OldBtreePage.firstKeyOffs + i * 2, (short)key.ival);
break;
case ClassDescriptor.FieldType.tpInt:
case ClassDescriptor.FieldType.tpUInt:
case ClassDescriptor.FieldType.tpEnum:
case ClassDescriptor.FieldType.tpObject:
case ClassDescriptor.FieldType.tpOid:
Bytes.pack4(dst, OldBtreePage.firstKeyOffs + i * 4, key.ival);
break;
case ClassDescriptor.FieldType.tpLong:
case ClassDescriptor.FieldType.tpULong:
case ClassDescriptor.FieldType.tpDate:
Bytes.pack8(dst, OldBtreePage.firstKeyOffs + i * 8, key.lval);
break;
case ClassDescriptor.FieldType.tpFloat:
Bytes.packF4(dst, OldBtreePage.firstKeyOffs + i * 4, (float)key.dval);
break;
case ClassDescriptor.FieldType.tpDouble:
Bytes.packF8(dst, OldBtreePage.firstKeyOffs + i * 8, key.dval);
break;
case ClassDescriptor.FieldType.tpDecimal:
Bytes.packDecimal(dst, OldBtreePage.firstKeyOffs + i * 16, key.dec);
break;
case ClassDescriptor.FieldType.tpGuid:
Bytes.packGuid(dst, OldBtreePage.firstKeyOffs + i * 16, key.guid);
break;
default:
Debug.Assert(false, "Invalid type");
break;
}
Bytes.pack4(dst, OldBtreePage.firstKeyOffs + (OldBtreePage.maxItems - i - 1) * 4, oid);
}
public int packString(int offs, string s)
{
if (s == null)
{
extend(offs + 4);
Bytes.pack4(arr, offs, -1);
offs += 4;
return offs;
}
byte[] bytes = Encoding.UTF8.GetBytes(s);
extend(offs + 4 + bytes.Length);
Bytes.pack4(arr, offs, -2 - bytes.Length);
Array.Copy(bytes, 0, arr, offs + 4, bytes.Length);
offs += 4 + bytes.Length;
return offs;
}
private int packKeyPart(ByteBuffer buf, int dst, ClassDescriptor.FieldType type, object val)
{
switch (type)
{
case ClassDescriptor.FieldType.tpBoolean:
dst = buf.packBool(dst, (bool)val);
break;
case ClassDescriptor.FieldType.tpByte:
dst = buf.packI1(dst, (byte)val);
break;
case ClassDescriptor.FieldType.tpSByte:
dst = buf.packI1(dst, (sbyte)val);
break;
case ClassDescriptor.FieldType.tpShort:
dst = buf.packI2(dst, (short)val);
break;
case ClassDescriptor.FieldType.tpUShort:
dst = buf.packI2(dst, (ushort)val);
break;
case ClassDescriptor.FieldType.tpChar:
dst = buf.packI2(dst, (char)val);
break;
case ClassDescriptor.FieldType.tpInt:
case ClassDescriptor.FieldType.tpOid:
case ClassDescriptor.FieldType.tpEnum:
dst = buf.packI4(dst, (int)val);
break;
case ClassDescriptor.FieldType.tpUInt:
dst = buf.packI4(dst, (int)(uint)val);
break;
case ClassDescriptor.FieldType.tpObject:
dst = buf.packI4(dst, val != null ? (int)((IPersistent)val).Oid : 0);
break;
case ClassDescriptor.FieldType.tpLong:
dst = buf.packI8(dst, (long)val);
break;
case ClassDescriptor.FieldType.tpULong:
dst = buf.packI8(dst, (long)(ulong)val);
break;
case ClassDescriptor.FieldType.tpDate:
dst = buf.packDate(dst, (DateTime)val);
break;
case ClassDescriptor.FieldType.tpFloat:
dst = buf.packF4(dst, (float)val);
break;
case ClassDescriptor.FieldType.tpDouble:
dst = buf.packF8(dst, (double)val);
break;
case ClassDescriptor.FieldType.tpDecimal:
dst = buf.packDecimal(dst, (decimal)val);
break;
case ClassDescriptor.FieldType.tpGuid:
dst = buf.packGuid(dst, (Guid)val);
break;
case ClassDescriptor.FieldType.tpString:
dst = buf.packString(dst, (string)val);
break;
case ClassDescriptor.FieldType.tpArrayOfByte:
buf.extend(dst + 4);
if (val != null)
{
byte[] arr = (byte[])val;
int len = arr.Length;
Bytes.pack4(buf.arr, dst, len);
dst += 4;
buf.extend(dst + len);
Array.Copy(arr, 0, buf.arr, dst, len);
dst += len;
}
else
{
Bytes.pack4(buf.arr, dst, 0);
dst += 4;
}
break;
default:
Debug.Assert(false, "Invalid type");
break;
}
return(dst);
}
internal static void setType(byte[] arr, int offs, int type)
{
Bytes.pack4(arr, offs + 4, type);
}
internal static void setSize(byte[] arr, int offs, int size)
{
Bytes.pack4(arr, offs, size);
}
public int packI4(int offs, int val)
{
extend(offs + 4);
Bytes.pack4(arr, offs, val);
return offs + 4;
}
internal static void setItem(Page pg, int index, int mask)
{
Bytes.pack4(pg.data, firstKeyOffs + index * 4, mask);
}
