private void ReadTagReference(DataBlock block, uint offset, bool withClass)
{
SeekToOffset(block, offset);
DatumIndex index;
int fixupOffset;
bool valid;
if (withClass)
{
// Class info - do a flexible structure read to get the index
StructureValueCollection values = StructureReader.ReadStructure(_reader, _tagRefLayout);
var classMagic = (int)values.GetInteger("class magic");
index = new DatumIndex(values.GetInteger("datum index"));
fixupOffset = (int)offset + _tagRefLayout.GetFieldOffset("datum index");
valid = _cacheFile.Tags.IsValidIndex(index, classMagic);
}
else
{
// No tag class - the datum index is at the offset
index = new DatumIndex(_reader.ReadUInt32());
fixupOffset = (int)offset;
valid = _cacheFile.Tags.IsValidIndex(index);
}
if (valid)
{
// Add the tagref fixup to the block
var fixup = new DataBlockTagFixup(index, fixupOffset);
block.TagFixups.Add(fixup);
ReferencedTags.Add(index);
}
}
private void ReadTagReference(DataBlock block, uint offset, bool withClass)
{
SeekToOffset(block, offset);
DatumIndex index;
int fixupOffset;
bool valid;
if (withClass)
{
// Class info - do a flexible structure read to get the index
var values = StructureReader.ReadStructure(_reader, _tagRefLayout);
var classMagic = (int) values.GetInteger("class magic");
index = new DatumIndex(values.GetInteger("datum index"));
fixupOffset = (int) offset + _tagRefLayout.GetFieldOffset("datum index");
valid = _cacheFile.Tags.IsValidIndex(index);
}
else
{
// No tag class - the datum index is at the offset
index = new DatumIndex(_reader.ReadUInt32());
fixupOffset = (int) offset;
valid = _cacheFile.Tags.IsValidIndex(index);
}
if (!valid) return;
// Add the tagref fixup to the block
var fixup = new DataBlockTagFixup(index, fixupOffset);
block.TagFixups.Add(fixup);
ReferencedTags.Add(index);
}
