EnCMapTableReader.cs

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using System.Reflection.Internal;
 
namespace System.Reflection.Metadata.Ecma335;
 
internal readonly struct EnCMapTableReader
{
    internal readonly int NumberOfRows;
 
    private readonly int _TokenOffset;
 
    internal readonly int RowSize;
 
    internal readonly MemoryBlock Block;
 
    internal EnCMapTableReader(int numberOfRows, MemoryBlock containingBlock, int containingBlockOffset)
    {
        NumberOfRows = numberOfRows;
        _TokenOffset = 0;
        RowSize = _TokenOffset + 4;
        Block = containingBlock.GetMemoryBlockAt(containingBlockOffset, RowSize * numberOfRows);
    }
 
    internal uint GetToken(int rowId)
    {
        int num = (rowId - 1) * RowSize;
        return Block.PeekUInt32(num + _TokenOffset);
    }
}