void ReadLines(DbiFunction[] funcs, Dictionary <uint, DbiDocument> documents, ref DataReader reader, uint end)
{
var address = PdbAddress.ReadAddress(ref reader);
int first = 0;
int last = funcs.Length - 1;
int found = -1;
while (first <= last)
{
var index = first + ((last - first) >> 1);
var addr = funcs[index].Address;
if (addr < address)
{
first = index + 1;
}
else if (addr > address)
{
last = index - 1;
}
else
{
found = index;
break;
}
}
if (found == -1)
{
return;
}
var flags = reader.ReadUInt16();
reader.Position += 4;
if (funcs[found].Lines is null)
{
while (found > 0)
{
var prevFunc = funcs[found - 1];
if (prevFunc is not null || prevFunc.Address != address)
{
break;
}
found--;
}
}
else
{
while (found < funcs.Length - 1 && funcs[found] is not null)
{
var nextFunc = funcs[found + 1];
if (nextFunc.Address != address)
{
break;
}
found++;
}
}
var func = funcs[found];
if (func.Lines is not null)
{
return;
}
func.Lines = new List <SymbolSequencePoint>();
while (reader.Position < end)
{
var document = documents[reader.ReadUInt32()];
var count = reader.ReadUInt32();
reader.Position += 4;
const int LINE_ENTRY_SIZE = 8;
const int COL_ENTRY_SIZE = 4;
var lineTablePos = reader.Position;
var colTablePos = reader.Position + count * LINE_ENTRY_SIZE;
for (uint i = 0; i < count; i++)
{
reader.Position = lineTablePos + i * LINE_ENTRY_SIZE;
var line = new SymbolSequencePoint {
Document = document
};
line.Offset = reader.ReadInt32();
var lineFlags = reader.ReadUInt32();
line.Line = (int)(lineFlags & 0x00ffffff);
line.EndLine = line.Line + (int)((lineFlags >> 24) & 0x7F);
if ((flags & 1) != 0)
{
reader.Position = colTablePos + i * COL_ENTRY_SIZE;
line.Column = reader.ReadUInt16();
line.EndColumn = reader.ReadUInt16();
}
func.Lines.Add(line);
}
}
}
public void Read(RecursionCounter counter, ref DataReader reader, uint scopeEnd)
{
if (!counter.Increment())
{
throw new PdbException("Scopes too deep");
}
while (reader.Position < scopeEnd)
{
var size = reader.ReadUInt16();
var begin = reader.Position;
var end = begin + size;
var type = (SymbolType)reader.ReadUInt16();
DbiScope child = null;
uint? childEnd = null;
string name;
switch (type)
{
case SymbolType.S_BLOCK32: {
reader.Position += 4;
childEnd = reader.ReadUInt32();
var len = reader.ReadUInt32();
var addr = PdbAddress.ReadAddress(ref reader);
name = PdbReader.ReadCString(ref reader);
child = new DbiScope(method, this, name, addr.Offset, len);
break;
}
case SymbolType.S_UNAMESPACE:
namespacesList.Add(new DbiNamespace(PdbReader.ReadCString(ref reader)));
break;
case SymbolType.S_MANSLOT: {
var variable = new DbiVariable();
if (variable.Read(ref reader))
{
localsList.Add(variable);
}
break;
}
case SymbolType.S_OEM:
if ((ulong)reader.Position + 20 > end)
{
break;
}
if (!ReadAndCompareBytes(ref reader, end, dotNetOemGuid))
{
Debug.Fail("Unknown OEM record GUID, not .NET GUID");
break;
}
reader.Position += 4; // typeIndex or 0
name = ReadUnicodeString(ref reader, end);
Debug.Assert(name is not null);
if (name is null)
{
break;
}
var data = reader.ReadBytes((int)(end - reader.Position));
if (oemInfos is null)
{
oemInfos = new List <OemInfo>(1);
}
oemInfos.Add(new OemInfo(name, data));
break;
case SymbolType.S_MANCONSTANT:
uint signatureToken = reader.ReadUInt32();
object value;
if (!NumericReader.TryReadNumeric(ref reader, end, out value))
{
break;
}
name = PdbReader.ReadCString(ref reader);
if (constants is null)
{
constants = new List <ConstantInfo>();
}
constants.Add(new ConstantInfo(name, signatureToken, value));
break;
case SymbolType.S_END:
break;
default:
break;
}
reader.Position = end;
if (child is not null)
{
child.Read(counter, ref reader, childEnd.Value);
childrenList.Add(child);
child = null;
}
}
counter.Decrement();
if (reader.Position != scopeEnd)
{
Debugger.Break();
}
}