SerializationInfo.cs source code in C# .NET

                        Code:
                         / Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / clr / src / BCL / System / Runtime / Serialization / SerializationInfo.cs / 1 / SerializationInfo.cs
                        
                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  SerializationInfo 
**
** 
** Purpose: The structure for holding all of the data needed
**          for object serialization and deserialization.
**
** 
===========================================================*/
namespace System.Runtime.Serialization { 
 
    using System;
    using System.Reflection; 
    using System.Runtime.Remoting;
    using System.Runtime.Remoting.Proxies;
    using System.Globalization;
 
[System.Runtime.InteropServices.ComVisible(true)]
    public sealed class SerializationInfo { 
        private const int defaultSize = 4; 

        internal String[]     m_members; 
        internal Object[]     m_data;
        internal Type[]       m_types;
        internal String       m_fullTypeName;
        internal int          m_currMember; 
        internal String       m_assemName;
        internal IFormatterConverter m_converter; 
 
        [CLSCompliant(false)]
        public SerializationInfo(Type type, IFormatterConverter converter) { 
            if (null==type) {
                throw new ArgumentNullException("type");
            }
 
            if (converter==null) {
                throw new ArgumentNullException("converter"); 
            } 

 
            m_fullTypeName = type.FullName;
            m_assemName = type.Module.Assembly.FullName;
            BCLDebug.Assert(m_fullTypeName!=null, "[SerializationInfo.ctor]m_fullTypeName!=null");
            BCLDebug.Assert(m_assemName!=null, "[SerializationInfo.ctor]m_assemName!=null"); 

            m_members= new String[defaultSize]; 
            m_data   = new Object[defaultSize]; 
            m_types  = new Type[defaultSize];
 
            m_converter = converter;

            m_currMember = 0;
 
        }
 
        public String FullTypeName { 
            get {
                return m_fullTypeName; 
            }
            set {
                if (null==value) {
                    throw new ArgumentNullException("value"); 
                }
                m_fullTypeName = value; 
            } 
        }
 
        public String AssemblyName {
            get {
                return m_assemName;
            } 

            set { 
                if (null==value) { 
                    throw new ArgumentNullException("value");
                } 
                m_assemName = value;
            }
        }
 
        public void SetType(Type type) {
            if (type==null) { 
                throw new ArgumentNullException("type"); 
            }
            m_fullTypeName = type.FullName; 
            m_assemName = type.Module.Assembly.FullName;
            BCLDebug.Assert(m_fullTypeName!=null, "[SerializationInfo.ctor]m_fullTypeName!=null");
            BCLDebug.Assert(m_assemName!=null, "[SerializationInfo.ctor]m_assemName!=null");
        } 

 
        public int MemberCount { 
            get {
                return m_currMember; 
            }
        }

        public SerializationInfoEnumerator GetEnumerator() { 
            return new SerializationInfoEnumerator(m_members, m_data, m_types, m_currMember);
        } 
 

        private void ExpandArrays() { 
            int newSize;
            BCLDebug.Assert(m_members.Length == m_currMember, "[SerializationInfo.ExpandArrays]m_members.Length == m_currMember");

            newSize = (m_currMember * 2); 

            // 
            // In the pathological case, we may wrap 
            //
            if (newSizem_currMember) {
                    newSize = Int32.MaxValue;
                }
            } 

            // 
            // Allocate more space and copy the data 
            //
            String[] newMembers = new String[newSize]; 
            Object[] newData    = new Object[newSize];
            Type[]   newTypes   = new Type[newSize];

            Array.Copy(m_members, newMembers, m_currMember); 
            Array.Copy(m_data, newData, m_currMember);
            Array.Copy(m_types, newTypes, m_currMember); 
 
            //
            // Assign the new arrys back to the member vars. 
            //
            m_members = newMembers;
            m_data    = newData;
            m_types   = newTypes; 
        }
 
        public void AddValue(String name, Object value, Type type) { 
            if (null==name) {
                throw new ArgumentNullException("name"); 
            }

            if (null==type) {
                throw new ArgumentNullException("type"); 
            }
 
            // 
            // Walk until we find a member by the same name or until
            // we reach the end.  If we find a member by the same name, 
            // throw.
            for (int i=0; i=m_members.Length) { 
                ExpandArrays(); 
            }
 
            //
            // Add the data and then advance the counter.
            //
            m_members[index] = name; 
            m_data[index]    = value;
            m_types[index]   = type; 
            m_currMember++; 
        }
 
        /*=================================UpdateValue==================================
        **Action: Finds the value if it exists in the current data.  If it does, we replace
        **        the values, if not, we append it to the end.  This is useful to the
        **        ObjectManager when it's performing fixups, but shouldn't be used by 
        **        clients.  Exposing out this functionality would allow children to overwrite
        **        their parent's values. 
        **Returns: void 
        **Arguments: name  -- the name of the data to be updated.
        **           value -- the new value. 
        **           type  -- the type of the data being added.
        **Exceptions: None.  All error checking is done with asserts.
        ==============================================================================*/
        internal void UpdateValue(String name, Object value, Type type) { 
            BCLDebug.Assert(null!=name,  "[SerializationInfo.UpdateValue]name!=null");
            BCLDebug.Assert(null!=value, "[SerializationInfo.UpdateValue]value!=null"); 
            BCLDebug.Assert(null!=type,  "[SerializationInfo.UpdateValue]type!=null"); 

            int index = FindElement(name); 
            if (index<0) {
                AddValue(name, value, type, m_currMember);
            } else {
                m_members[index] = name; 
                m_data[index]    = value;
                m_types[index]   = type; 
            } 

        } 

        private int FindElement (String name) {
            if (null==name) {
                throw new ArgumentNullException("name"); 
            }
            BCLDebug.Trace("SER", "[SerializationInfo.FindElement]Looking for ", name, " CurrMember is: ", m_currMember); 
            for (int i=0; im_currMember) {
                    newSize = Int32.MaxValue;
                }
            } 

            // 
            // Allocate more space and copy the data 
            //
            String[] newMembers = new String[newSize]; 
            Object[] newData    = new Object[newSize];
            Type[]   newTypes   = new Type[newSize];

            Array.Copy(m_members, newMembers, m_currMember); 
            Array.Copy(m_data, newData, m_currMember);
            Array.Copy(m_types, newTypes, m_currMember); 
 
            //
            // Assign the new arrys back to the member vars. 
            //
            m_members = newMembers;
            m_data    = newData;
            m_types   = newTypes; 
        }
 
        public void AddValue(String name, Object value, Type type) { 
            if (null==name) {
                throw new ArgumentNullException("name"); 
            }

            if (null==type) {
                throw new ArgumentNullException("type"); 
            }
 
            // 
            // Walk until we find a member by the same name or until
            // we reach the end.  If we find a member by the same name, 
            // throw.
            for (int i=0; i=m_members.Length) { 
                ExpandArrays(); 
            }
 
            //
            // Add the data and then advance the counter.
            //
            m_members[index] = name; 
            m_data[index]    = value;
            m_types[index]   = type; 
            m_currMember++; 
        }
 
        /*=================================UpdateValue==================================
        **Action: Finds the value if it exists in the current data.  If it does, we replace
        **        the values, if not, we append it to the end.  This is useful to the
        **        ObjectManager when it's performing fixups, but shouldn't be used by 
        **        clients.  Exposing out this functionality would allow children to overwrite
        **        their parent's values. 
        **Returns: void 
        **Arguments: name  -- the name of the data to be updated.
        **           value -- the new value. 
        **           type  -- the type of the data being added.
        **Exceptions: None.  All error checking is done with asserts.
        ==============================================================================*/
        internal void UpdateValue(String name, Object value, Type type) { 
            BCLDebug.Assert(null!=name,  "[SerializationInfo.UpdateValue]name!=null");
            BCLDebug.Assert(null!=value, "[SerializationInfo.UpdateValue]value!=null"); 
            BCLDebug.Assert(null!=type,  "[SerializationInfo.UpdateValue]type!=null"); 

            int index = FindElement(name); 
            if (index<0) {
                AddValue(name, value, type, m_currMember);
            } else {
                m_members[index] = name; 
                m_data[index]    = value;
                m_types[index]   = type; 
            } 

        } 

        private int FindElement (String name) {
            if (null==name) {
                throw new ArgumentNullException("name"); 
            }
            BCLDebug.Trace("SER", "[SerializationInfo.FindElement]Looking for ", name, " CurrMember is: ", m_currMember); 
            for (int i=0; i
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