private void ReadLines(DbiFunction[] funcs, Dictionary <long, DbiDocument> documents, IImageStream stream, long end)
        {
            var address = PdbAddress.ReadAddress(stream);

            var first = 0;
            var last  = funcs.Length - 1;
            var 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 = stream.ReadUInt16();

            stream.Position += 4;

            if (funcs[found].Lines == null)
            {
                while (found > 0)
                {
                    var prevFunc = funcs[found - 1];
                    if (prevFunc != null || prevFunc.Address != address)
                    {
                        break;
                    }
                    found--;
                }
            }
            else
            {
                while (found < funcs.Length - 1 && funcs[found] != null)
                {
                    var nextFunc = funcs[found + 1];
                    if (nextFunc.Address != address)
                    {
                        break;
                    }
                    found++;
                }
            }
            var func = funcs[found];

            if (func.Lines != null)
            {
                return;
            }
            func.Lines = new List <DbiSourceLine>();

            while (stream.Position < end)
            {
                var document = documents[stream.ReadUInt32()];
                var count    = stream.ReadUInt32();
                stream.Position += 4;

                const int LINE_ENTRY_SIZE = 8;
                const int COL_ENTRY_SIZE  = 4;
                var       lineTablePos    = stream.Position;
                var       colTablePos     = stream.Position + count * LINE_ENTRY_SIZE;

                for (uint i = 0; i < count; i++)
                {
                    stream.Position = lineTablePos + i * LINE_ENTRY_SIZE;

                    var line = new DbiSourceLine
                    {
                        Document = document
                    };
                    line.Offset = stream.ReadUInt32();
                    var lineFlags = stream.ReadUInt32();

                    line.LineBegin = lineFlags & 0x00ffffff;
                    line.LineEnd   = line.LineBegin + ((lineFlags >> 24) & 0x7F);
                    if ((flags & 1) != 0)
                    {
                        stream.Position  = colTablePos + i * COL_ENTRY_SIZE;
                        line.ColumnBegin = stream.ReadUInt16();
                        line.ColumnEnd   = stream.ReadUInt16();
                    }

                    func.Lines.Add(line);
                }
            }
        }
示例#2
0
文件: DbiModule.cs 项目: bprg/dnlib
        void ReadLines(DbiFunction[] funcs, Dictionary<long, DbiDocument> documents, IImageStream stream, long end)
        {
            var address = PdbAddress.ReadAddress(stream);

            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 = stream.ReadUInt16();
            stream.Position += 4;

            if (funcs[found].Lines == null) {
                while (found > 0) {
                    var prevFunc = funcs[found - 1];
                    if (prevFunc != null || prevFunc.Address != address)
                        break;
                    found--;
                }
            }
            else {
                while (found < funcs.Length - 1 && funcs[found] != null) {
                    var nextFunc = funcs[found + 1];
                    if (nextFunc.Address != address)
                        break;
                    found++;
                }
            }
            var func = funcs[found];
            if (func.Lines != null)
                return;
            func.Lines = new List<DbiSourceLine>();

            while (stream.Position < end) {
                var document = documents[stream.ReadUInt32()];
                var count = stream.ReadUInt32();
                stream.Position += 4;

                const int LINE_ENTRY_SIZE = 8;
                const int COL_ENTRY_SIZE = 4;
                var lineTablePos = stream.Position;
                var colTablePos = stream.Position + count * LINE_ENTRY_SIZE;

                for (uint i = 0; i < count; i++) {
                    stream.Position = lineTablePos + i * LINE_ENTRY_SIZE;

                    var line = new DbiSourceLine {
                        Document = document
                    };
                    line.Offset = stream.ReadUInt32();
                    var lineFlags = stream.ReadUInt32();

                    line.LineBegin = lineFlags & 0x00ffffff;
                    line.LineEnd = line.LineBegin + ((lineFlags >> 24) & 0x7F);
                    if ((flags & 1) != 0) {
                        stream.Position = colTablePos + i * COL_ENTRY_SIZE;
                        line.ColumnBegin = stream.ReadUInt16();
                        line.ColumnEnd = stream.ReadUInt16();
                    }

                    func.Lines.Add(line);
                }
            }
        }