EnCLogTableReader.cs

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using System.Reflection.Internal;
 
namespace System.Reflection.Metadata.Ecma335;
 
internal readonly struct EnCLogTableReader
{
    internal readonly int NumberOfRows;
 
    private readonly int _TokenOffset;
 
    private readonly int _FuncCodeOffset;
 
    internal readonly int RowSize;
 
    internal readonly MemoryBlock Block;
 
    internal EnCLogTableReader(int numberOfRows, MemoryBlock containingBlock, int containingBlockOffset, MetadataStreamKind metadataStreamKind)
    {
        NumberOfRows = ((metadataStreamKind != MetadataStreamKind.Compressed) ? numberOfRows : 0);
        _TokenOffset = 0;
        _FuncCodeOffset = _TokenOffset + 4;
        RowSize = _FuncCodeOffset + 4;
        Block = containingBlock.GetMemoryBlockAt(containingBlockOffset, RowSize * numberOfRows);
    }
 
    internal uint GetToken(int rowId)
    {
        int num = (rowId - 1) * RowSize;
        return Block.PeekUInt32(num + _TokenOffset);
    }
 
    internal EditAndContinueOperation GetFuncCode(int rowId)
    {
        int num = (rowId - 1) * RowSize;
        return (EditAndContinueOperation)Block.PeekUInt32(num + _FuncCodeOffset);
    }
}