MiniModule.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / AddIn / AddIn / System / Addin / MiniReflection / MiniModule.cs / 1305376 / MiniModule.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  MiniModule 
**
** Purpose: Wraps a module, using a managed PE reader to 
**     interpret the metadata.
**
===========================================================*/
using System; 
using System.Collections.Generic;
using System.Collections.ObjectModel; 
using System.Diagnostics; 
using System.Globalization;
using System.IO; 
using System.Text;
using System.AddIn.MiniReflection.MetadataReader;
using System.Diagnostics.Contracts;
 
namespace System.AddIn.MiniReflection
{ 
    [Serializable] 
    internal class MiniModule : IDisposable
    { 
        [NonSerialized]
        protected PEFileReader _peFile;
        private MiniAssembly _assembly;
        private String _moduleName; 

        protected MiniModule(String peFileName) 
        { 
            System.Diagnostics.Contracts.Contract.Requires(peFileName != null);
 
            _peFile = new PEFileReader(peFileName);
            _moduleName = Path.GetFileNameWithoutExtension(peFileName);
        }
 
        protected MiniModule()
        { 
        } 

        public void Dispose() 
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        } 

        protected virtual void Dispose(bool disposing) 
        { 
            if (_peFile != null)
            { 
                if (disposing)
                    _peFile.Dispose();
                _peFile = null;
            } 
        }
 
        // Spec#: this should be protected or private, not public.  Long term, this 
        // should be represented as a "model variable".
        public bool IsDisposed { 
            [Pure]
            get { return _peFile == null; }
        }
 
        public MiniAssembly Assembly {
            get { 
                System.Diagnostics.Contracts.Contract.Ensures(System.Diagnostics.Contracts.Contract.Result() != null); 
                System.Diagnostics.Contracts.Contract.Assert(_assembly != null);
                return _assembly; 
            }
            protected internal set {
                System.Diagnostics.Contracts.Contract.Requires(value != null);
                _assembly = value; 
            }
        } 
 
        public String ModuleName {
            get { return _moduleName; } 
        }

        internal PEFileReader PEFileReader {
            get { 
                if (IsDisposed)
                    throw new ObjectDisposedException(null); 
                System.Diagnostics.Contracts.Contract.EndContractBlock(); 
                return _peFile;
            } 
        }

        public IList GetGenericTypes()
        { 
            // get a list of generic types by looking for Type owners in GenericParam table
            List genericTypeTokens = new List(); 
            uint rowsGeneric = _peFile.MetaData.RowsInTable(MDTables.Tables.GenericParam); 
            for (uint i = 0; i < rowsGeneric; i++)
            { 
                _peFile.MetaData.SeekToRowOfTable(MDTables.Tables.GenericParam, i);
                _peFile.B.ReadUInt16(); // number
                _peFile.B.ReadUInt16(); // flags
                MetadataToken genericTypeToken = _peFile.MetaData.ReadMetadataToken(MDTables.Encodings.TypeOrMethodDef); // owner 
                genericTypeTokens.Add(genericTypeToken);
            } 
 
            return genericTypeTokens;
        } 

        // Only returns public types.
        public IList GetTypesWithAttributeInModule(Type customAttribute)
        { 
            return GetTypesWithAttributeInModule(customAttribute, false);
        } 
 
        public IList GetTypesWithAttributeInModule(Type customAttribute, bool includePrivate)
        { 
            if (IsDisposed)
                throw new ObjectDisposedException(null);
            if (customAttribute == null)
                throw new ArgumentNullException("customAttribute"); 
            System.Diagnostics.Contracts.Contract.EndContractBlock();
 
            _peFile.InitMetaData(); 
            MDTables MetaData = _peFile.MetaData;
 
            List types = new List();
            String attributeName = customAttribute.Name;
            String attributeNameSpace = customAttribute.Namespace;
 
            IList genericTypeTokens = GetGenericTypes();
 
            uint numRows = MetaData.RowsInTable(MDTables.Tables.CustomAttribute); 
            for (uint i = 0; i < numRows; i++)
            { 
                MetaData.SeekToRowOfTable(MDTables.Tables.CustomAttribute, i);

                // Format: Parent type token, CA type token, value (index into blob heap)
                MetadataToken targetType = MetaData.ReadMetadataToken(MDTables.Encodings.HasCustomAttribute); 
                MetadataToken caType = MetaData.ReadMetadataToken(MDTables.Encodings.CustomAttributeType);
                //UInt32 value = MetaData.ReadBlobIndex(); 
                //Console.WriteLine("CA - Applied to: {0}  CA .ctor: {1}  Value: {2}", targetType, caType, value); 
                //Console.WriteLine("CA MD Tokens  Parent: {0}  Type: {1}", targetType.ToMDToken(), caType.ToMDToken());
 
                // Ensure the custom attribute type is the type we expect
                MetaData.SeekToMDToken(caType);
                String caTypeName = null, caNameSpace = null;
                if (caType.Table != MDTables.Tables.MemberRef) 
                {
                    // Custom attribute was defined in the assembly we are currently inspecting? 
                    // Ignore it. 
                    System.Diagnostics.Contracts.Contract.Assert(caType.Table == MDTables.Tables.MethodDef);
                    continue; 
                }
                MetadataToken customAttributeType = MetaData.ReadMetadataToken(MDTables.Encodings.MemberRefParent);
                //Console.WriteLine("   MemberRef: {0}  Type of MemberRef: {1}", caType.ToMDToken(), customAttributeType.ToMDToken());
                MetaData.SeekToMDToken(customAttributeType); 
                MetadataToken resolutionScope = MetaData.ReadMetadataToken(MDTables.Encodings.ResolutionScope);
                // @ 
                caTypeName = MetaData.ReadString(); 
                if (!String.Equals(caTypeName, attributeName))
                    continue; 
                caNameSpace = MetaData.ReadString();
                if (!String.Equals(caNameSpace, attributeNameSpace))
                    continue;
 
                // Get type name & namespace.
                switch (targetType.Table) 
                { 
                    case MDTables.Tables.TypeDef:
                        MetaData.SeekToMDToken(targetType); 
                        System.Reflection.TypeAttributes flags = (System.Reflection.TypeAttributes) _peFile.B.ReadUInt32();
                        System.Reflection.TypeAttributes vis = flags & System.Reflection.TypeAttributes.VisibilityMask;
                        bool isPublic = vis == System.Reflection.TypeAttributes.Public; // NestedPublic not supported
                        if (!includePrivate && !isPublic) 
                            continue;
                        String typeName = MetaData.ReadString(); 
                        String nameSpace = MetaData.ReadString(); 
                        bool isGeneric = genericTypeTokens.Contains(targetType);
                        TypeInfo type = new TypeInfo(targetType, _assembly, this, typeName, nameSpace, isGeneric); 
                        types.Add(type);
                        break;

                    default: 
                        throw new NotImplementedException(String.Format(CultureInfo.CurrentCulture, Res.UnknownTokenType, targetType.Table, Assembly.FullName));
                } 
            } 
            return types;
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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