ILSpy/ILSpy/Metadata/CorTables/FieldTableTreeNode.cs

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using System.Collections.Generic;
using System.Reflection;
using System.Reflection.Metadata;
using System.Reflection.Metadata.Ecma335;

using ICSharpCode.Decompiler.Metadata;

namespace ILSpy.Metadata.CorTables
{
	/// <summary>
	/// View of the Field table — every field defined by the module's types. Each row carries
	/// the field's attributes (visibility / static / const / …), name, and the heap offset
	/// of its signature blob.
	/// </summary>
	public sealed class FieldTableTreeNode : MetadataTableTreeNode<FieldTableTreeNode.FieldDefEntry>
	{
		public FieldTableTreeNode(MetadataFile metadataFile)
			: base(TableIndex.Field, metadataFile)
		{
		}

		protected override IReadOnlyList<FieldDefEntry> LoadTable()
		{
			var list = new List<FieldDefEntry>();
			foreach (var row in metadataFile.Metadata.FieldDefinitions)
				list.Add(new FieldDefEntry(metadataFile, row));
			return list;
		}

		public sealed class FieldDefEntry
		{
			readonly MetadataFile metadataFile;
			readonly FieldDefinitionHandle handle;
			readonly FieldDefinition fieldDef;

			public int RID => MetadataTokens.GetRowNumber(handle);

			[ColumnInfo("X8")]
			public int Token => MetadataTokens.GetToken(handle);

			[ColumnInfo("X8")]
			public int Offset => metadataFile.MetadataOffset
				+ metadataFile.Metadata.GetTableMetadataOffset(TableIndex.Field)
				+ metadataFile.Metadata.GetTableRowSize(TableIndex.Field) * (RID - 1);

			[ColumnInfo("X8")]
			public FieldAttributes Attributes => fieldDef.Attributes;

			public string Name => metadataFile.Metadata.GetString(fieldDef.Name);

			[ColumnInfo("X8", Kind = ColumnKind.HeapOffset)]
			public int Signature => MetadataTokens.GetHeapOffset(fieldDef.Signature);

			public FieldDefEntry(MetadataFile metadataFile, FieldDefinitionHandle handle)
			{
				this.metadataFile = metadataFile;
				this.handle = handle;
				fieldDef = metadataFile.Metadata.GetFieldDefinition(handle);
			}
		}
	}
}