FormatterServices.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Runtime / Serialization / FormatterServices.cs / 2 / FormatterServices.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class: FormatterServices 
**
** 
** Purpose: Provides some static methods to aid with the implementation
**          of a Formatter for Serialization.
**
** 
============================================================*/
namespace System.Runtime.Serialization { 
 
    using System;
    using System.Reflection; 
    using System.Reflection.Cache;
    using System.Collections;
    using System.Collections.Generic;
    using System.Security; 
    using System.Security.Permissions;
    using System.Runtime.Serialization.Formatters; 
    using System.Runtime.Remoting; 
    using System.Runtime.CompilerServices;
    using System.Threading; 
    using StackCrawlMark = System.Threading.StackCrawlMark;
    using System.IO;
    using System.Text;
    using System.Globalization; 

[System.Runtime.InteropServices.ComVisible(true)] 
    public sealed class FormatterServices { 
        internal static Dictionary m_MemberInfoTable = new Dictionary(32);
 
        private static Object s_FormatterServicesSyncObject = null;

        private static Object formatterServicesSyncObject
        { 
            get
            { 
                if (s_FormatterServicesSyncObject == null) 
                {
                    Object o = new Object(); 
                    Interlocked.CompareExchange(ref s_FormatterServicesSyncObject, o, null);
                }
                return s_FormatterServicesSyncObject;
            } 
        }
 
        private FormatterServices() { 
            throw new NotSupportedException();
        } 

        private static MemberInfo[] GetSerializableMembers(RuntimeType type) {
            // get the list of all fields
            FieldInfo[] fields = type.GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance); 
            int countProper = 0;
            for (int i = 0;  i < fields.Length; i++) { 
                if ((fields[i].Attributes & FieldAttributes.NotSerialized) == FieldAttributes.NotSerialized) 
                    continue;
                countProper++; 
            }
            if (countProper != fields.Length) {
                FieldInfo[] properFields = new FieldInfo[countProper];
                countProper = 0; 
                for (int i = 0;  i < fields.Length; i++) {
                    if ((fields[i].Attributes & FieldAttributes.NotSerialized) == FieldAttributes.NotSerialized) 
                        continue; 
                    properFields[countProper] = fields[i];
                    countProper++; 
                }
                return properFields;
            }
            else 
                return fields;
        } 
 
        private static bool CheckSerializable(RuntimeType type) {
            if (type.IsSerializable) { 
                return true;
            }
            return false;
        } 

        private static MemberInfo[] InternalGetSerializableMembers(RuntimeType type) { 
            ArrayList allMembers=null; 
            MemberInfo[] typeMembers;
            FieldInfo [] typeFields; 
            RuntimeType parentType;

            BCLDebug.Assert(type!=null, "[GetAllSerializableMembers]type!=null");
 
            //<
 
            if (type.IsInterface) { 
                return new MemberInfo[0];
            } 

            if (!(CheckSerializable(type))) {
                    throw new SerializationException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Serialization_NonSerType"), type.FullName, type.Module.Assembly.FullName));
            } 

            //Get all of the serializable members in the class to be serialized. 
            typeMembers = GetSerializableMembers(type); 

            //If this class doesn't extend directly from object, walk its hierarchy and 
            //get all of the private and assembly-access fields (e.g. all fields that aren't
            //virtual) and include them in the list of things to be serialized.
            parentType = (RuntimeType)(type.BaseType);
            if (parentType!=null && parentType!=typeof(Object)) { 
                Type[] parentTypes = null;
                int parentTypeCount = 0; 
                bool classNamesUnique = GetParentTypes(parentType, out parentTypes, out parentTypeCount); 
                if (parentTypeCount > 0){
                    allMembers = new ArrayList(); 
                    for (int i = 0; i < parentTypeCount;i++){
                        parentType = (RuntimeType)parentTypes[i];
                        if (!CheckSerializable(parentType)) {
                                throw new SerializationException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Serialization_NonSerType"), parentType.FullName, parentType.Module.Assembly.FullName)); 
                        }
 
                        typeFields = parentType.GetFields(BindingFlags.NonPublic | BindingFlags.Instance); 
                        String typeName = classNamesUnique ? parentType.Name : parentType.FullName;
                        foreach (FieldInfo field in typeFields) { 
                            // Family and Assembly fields will be gathered by the type itself.
                            if (!field.IsNotSerialized) {
                                allMembers.Add(new SerializationFieldInfo((RuntimeFieldInfo)field, typeName));
                            } 
                        }
                    } 
                    //If we actually found any new MemberInfo's, we need to create a new MemberInfo array and 
                    //copy all of the members which we've found so far into that.
                    if (allMembers!=null && allMembers.Count>0) { 
                        MemberInfo[] membersTemp = new MemberInfo[allMembers.Count + typeMembers.Length];
                        Array.Copy(typeMembers, membersTemp, typeMembers.Length);
                        allMembers.CopyTo(membersTemp, typeMembers.Length);
                        typeMembers = membersTemp; 
                    }
                } 
            } 
            return typeMembers;
        } 

        static bool GetParentTypes(Type parentType, out Type[] parentTypes, out int parentTypeCount){
            //Check if there are any dup class names. Then we need to include as part of
            //typeName to prefix the Field names in SerializationFieldInfo 
            /*out*/ parentTypes = null;
            /*out*/ parentTypeCount = 0; 
            bool unique = true; 
            for(Type t1 = parentType;t1 != typeof(object); t1 = t1.BaseType){
                if (t1.IsInterface) continue; 
                string t1Name = t1.Name;
                for(int i=0;unique && i

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