MDTable.cs :  » Aspect-Oriented-Frameworks » Runtime-Assembly-Instrumentation-Library » Mono » PEToolkit » Metadata » C# / CSharp Open Source

/*
 * Copyright (c) 2002 Sergey Chaban <serge@wildwestsoftware.com>
 */

using System;
using System.IO;
using System.Collections;
using System.Runtime.InteropServices;

namespace Mono.PEToolkit.Metadata{

  public interface MDTable {
    /// <summary>
    /// Number of rows in the table.
    /// </summary>
    int NumberOfRows {get;}

    /// <summary>
    /// Gets ot sets a row in the metadata table.
    /// </summary>
    Row this [int rowNum] {get; set;}

    void Add(Row row);

    void FromRawData(byte [] buff, int offs, int numRows);

    string Name {get;}

    TableId Id {get;}

    MDHeap Heap {get;}

    void Dump(TextWriter writer);
  }


  public abstract class MDTableBase : MDTable {
    protected ArrayList rows; // rows storage
    protected MDHeap heap;    // base heap

    public MDTableBase(MDHeap heap)
    {
      rows = new ArrayList();
      this.heap = heap;

      if (heap is TablesHeap) {
        (heap as TablesHeap).RegisterTable(this);
      }
    }

    public virtual int NumberOfRows {
      get {
        return rows.Count;
      }
    }


    public virtual Row this [int rowNum] {
      get {
        if (rowNum < 0) throw new IndexOutOfRangeException("Row[]");

        // Zero row, special case
        if (rowNum == 0) return NullRow.Instance;
        return rows [rowNum - 1] as Row;
      }
      set {
        rows.Insert(rowNum, value);
      }
    }

    public virtual void Add(Row row)
    {
      rows.Add(row);
    }

    public abstract void FromRawData(byte [] buff, int offs, int numRows);

    public abstract string Name {get;}

    public abstract TableId Id {get;}

    public virtual MDHeap Heap {
      get {
        return heap;
      }
    }

    public virtual void Dump(TextWriter writer)
    {
      writer.WriteLine("=========================================");
      writer.WriteLine("Table '{0}', id = {1} (0x{2}), rows = {3}",
        Name, Id, ((int) Id).ToString("X"), NumberOfRows);
      int n = 1;
      foreach (Row row in rows) {
        writer.WriteLine();
        writer.WriteLine("Row #{0}", n++);
        writer.WriteLine("-------------");
        row.Dump(writer);
        writer.WriteLine();
      }
    }

  }

}