SerializationInfo.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Runtime / Serialization / SerializationInfo.cs / 1305376 / 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;
#if FEATURE_REMOTING
    using System.Runtime.Remoting.Proxies;
#endif 
    using System.Globalization;
    using System.Diagnostics.Contracts; 
 
[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 int          m_currMember; 
        internal IFormatterConverter m_converter; 
        private String        m_fullTypeName;
        private String        m_assemName; 
        private Type          objectType;
        private bool          isFullTypeNameSetExplicit;
        private bool          isAssemblyNameSetExplicit;
 
        [CLSCompliant(false)]
        public SerializationInfo(Type type, IFormatterConverter converter) { 
            if ((object)type == null) { 
                throw new ArgumentNullException("type");
            } 

            if (converter==null) {
                throw new ArgumentNullException("converter");
            } 

            Contract.EndContractBlock(); 
 
            objectType = type;
            m_fullTypeName = type.FullName; 
            m_assemName = type.Module.Assembly.FullName;

            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");
                }
                Contract.EndContractBlock();
                m_fullTypeName = value; 
                isFullTypeNameSetExplicit = true;
            } 
        } 

        public String AssemblyName { 
            get {
                return m_assemName;
            }
 
            set {
                if (null==value) { 
                    throw new ArgumentNullException("value"); 
                }
                Contract.EndContractBlock(); 
                m_assemName = value;
                isAssemblyNameSetExplicit = true;
            }
        } 

        public void SetType(Type type) { 
            if ((object)type == null) { 
                throw new ArgumentNullException("type");
            } 
            Contract.EndContractBlock();
            if (!Object.ReferenceEquals(objectType, type))
            {
                objectType = type; 
                m_fullTypeName = type.FullName;
                m_assemName = type.Module.Assembly.FullName; 
                isFullTypeNameSetExplicit = false; 
                isAssemblyNameSetExplicit = false;
            } 
        }

        public int MemberCount {
            get { 
                return m_currMember;
            } 
        } 

        public Type ObjectType { 
            get {
                return objectType;
            }
        } 

        public bool IsFullTypeNameSetExplicit { 
            get { 
                return isFullTypeNameSetExplicit;
            } 
        }

        public bool IsAssemblyNameSetExplicit {
            get { 
                return isAssemblyNameSetExplicit;
            } 
        } 

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

 
        private void ExpandArrays() {
            int newSize; 
            Contract.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 ((object)type == null) {
                throw new ArgumentNullException("type"); 
            }
            Contract.EndContractBlock();

            // 
            // 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) {
            Contract.Assert(null!=name,  "[SerializationInfo.UpdateValue]name!=null");
            Contract.Assert(null!=value, "[SerializationInfo.UpdateValue]value!=null");
            Contract.Assert(null!=(object)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");
            }
            Contract.EndContractBlock();
            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 ((object)type == null) {
                throw new ArgumentNullException("type"); 
            }
            Contract.EndContractBlock();

            // 
            // 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) {
            Contract.Assert(null!=name,  "[SerializationInfo.UpdateValue]name!=null");
            Contract.Assert(null!=value, "[SerializationInfo.UpdateValue]value!=null");
            Contract.Assert(null!=(object)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");
            }
            Contract.EndContractBlock();
            BCLDebug.Trace("SER", "[SerializationInfo.FindElement]Looking for ", name, " CurrMember is: ", m_currMember); 
            for (int i=0; i
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SerializationInfo.cs source code in C# .NET

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