MethodBody.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Reflection / MethodBody.cs / 1 / MethodBody.cs
                        

                        
                            // ==++== 
//
//   Copyright(c) Microsoft Corporation.  All rights reserved.
//
// ==--== 

using System; 
using System.Globalization; 
using System.Collections.Generic;
 
namespace System.Reflection
{
    [Flags()]
    [System.Runtime.InteropServices.ComVisible(true)] 
    public enum ExceptionHandlingClauseOptions: int
    { 
        Clause = 0x0, 
        Filter = 0x1,
        Finally = 0x2, 
        Fault = 0x4,
    }

    [System.Runtime.InteropServices.ComVisible(true)] 
    public sealed class ExceptionHandlingClause
    { 
        #region Private costructor 
        // This class can only be created from inside the EE.
        private ExceptionHandlingClause() { } 
        #endregion

        #region Private Data Members
        private MethodBody m_methodBody; 
        private ExceptionHandlingClauseOptions m_flags;
        private int m_tryOffset; 
        private int m_tryLength; 
        private int m_handlerOffset;
        private int m_handlerLength; 
        private int m_catchMetadataToken;
        private int m_filterOffset;
        #endregion
 
        #region Public Members
        public ExceptionHandlingClauseOptions Flags { get { return m_flags; } } 
        public int TryOffset { get { return m_tryOffset; } } 
        public int TryLength { get { return m_tryLength; } }
        public int HandlerOffset { get { return m_handlerOffset; } } 
        public int HandlerLength { get { return m_handlerLength; } }

        public int FilterOffset
        { 
            get
            { 
                if (m_flags != ExceptionHandlingClauseOptions.Filter) 
                    throw new InvalidOperationException(Environment.GetResourceString("Arg_EHClauseNotFilter"));
 
                return m_filterOffset;
            }
        }
 
        public Type CatchType
        { 
            get 
            {
                if (m_flags != ExceptionHandlingClauseOptions.Clause) 
                    throw new InvalidOperationException(Environment.GetResourceString("Arg_EHClauseNotClause"));

                Type type = null;
 
                if (!MetadataToken.IsNullToken(m_catchMetadataToken))
                { 
                    Type declaringType = m_methodBody.m_methodBase.DeclaringType; 
                    Module module = (declaringType == null) ? m_methodBody.m_methodBase.Module : declaringType.Module;
                    type = module.ResolveType(m_catchMetadataToken, (declaringType == null) ? null : declaringType.GetGenericArguments(), 
                        m_methodBody.m_methodBase is MethodInfo ? m_methodBody.m_methodBase.GetGenericArguments() : null);
                }

                return type; 
            }
        } 
        #endregion 

        #region Object Overrides 
        public override string ToString()
        {
            if (Flags == ExceptionHandlingClauseOptions.Clause)
            { 
                return String.Format(CultureInfo.CurrentUICulture,
                    "Flags={0}, TryOffset={1}, TryLength={2}, HandlerOffset={3}, HandlerLength={4}, CatchType={5}", 
                    Flags, TryOffset, TryLength, HandlerOffset, HandlerLength, CatchType); 
            }
 
            if (Flags == ExceptionHandlingClauseOptions.Filter)
            {
                return String.Format(CultureInfo.CurrentUICulture,
                    "Flags={0}, TryOffset={1}, TryLength={2}, HandlerOffset={3}, HandlerLength={4}, FilterOffset={5}", 
                    Flags, TryOffset, TryLength, HandlerOffset, HandlerLength, FilterOffset);
            } 
 
            return String.Format(CultureInfo.CurrentUICulture,
                "Flags={0}, TryOffset={1}, TryLength={2}, HandlerOffset={3}, HandlerLength={4}", 
                Flags, TryOffset, TryLength, HandlerOffset, HandlerLength);

        }
        #endregion 
    }
 
    [System.Runtime.InteropServices.ComVisible(true)] 
    public sealed class MethodBody
    { 
        #region Private costructor
        // This class can only be created from inside the EE.
        private MethodBody() { }
        #endregion 

        #region Private Data Members 
        private byte[] m_IL; 
        private ExceptionHandlingClause[] m_exceptionHandlingClauses;
        private LocalVariableInfo[] m_localVariables; 
        internal MethodBase m_methodBase;
        private int m_localSignatureMetadataToken;
        private int m_maxStackSize;
        private bool m_initLocals; 
        #endregion
 
        #region Public Members 
        public int LocalSignatureMetadataToken { get { return m_localSignatureMetadataToken; } }
        public IList LocalVariables { get { return Array.AsReadOnly(m_localVariables); } } 
        public int MaxStackSize { get { return m_maxStackSize; } }
        public bool InitLocals { get { return m_initLocals; } }
        public byte[] GetILAsByteArray() { return m_IL; }
        public IList ExceptionHandlingClauses { get { return Array.AsReadOnly(m_exceptionHandlingClauses); } } 
        #endregion
    } 
 
    [System.Runtime.InteropServices.ComVisible(true)]
    public class LocalVariableInfo 
    {
        #region Private Data Members
        private int m_isPinned;
        private int m_localIndex; 
        private RuntimeTypeHandle m_typeHandle;
        #endregion 
 
        #region Constructor
        internal LocalVariableInfo() { } 
        #endregion

        #region Object Overrides
        public override string ToString() 
        {
            string toString = LocalType.ToString() + " (" + LocalIndex + ")"; 
 
            if (IsPinned)
                toString += " (pinned)"; 

            return toString;
        }
        #endregion 

        #region Public Members 
        public virtual Type LocalType { get { BCLDebug.Assert(m_typeHandle != null, "type handle must be set!");  return m_typeHandle.GetRuntimeType(); } } 
        public virtual bool IsPinned { get { return m_isPinned != 0; } }
        public virtual int LocalIndex { get { return m_localIndex; } } 
        #endregion
    }
}

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