Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/ArrayHelper.cs

@@ -0,0 +1,400 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.Xml
+{
+    using System;
+
+    abstract class ArrayHelper<TArgument, TArray>
+    {
+        public TArray[] ReadArray(XmlDictionaryReader reader, TArgument localName, TArgument namespaceUri, int maxArrayLength)
+        {
+            TArray[][] arrays = null;
+            TArray[] array = null;
+            int arrayCount = 0;
+            int totalRead = 0;
+            int count;
+            if (reader.TryGetArrayLength(out count))
+            {
+                if (count > maxArrayLength)
+                    XmlExceptionHelper.ThrowMaxArrayLengthOrMaxItemsQuotaExceeded(reader, maxArrayLength);
+
+                if (count > XmlDictionaryReader.MaxInitialArrayLength)
+                    count = XmlDictionaryReader.MaxInitialArrayLength;
+            }
+            else
+            {
+                count = 32;
+            }
+            while (true)
+            {
+                array = new TArray[count];
+                int read = 0;
+                while (read < array.Length)
+                {
+                    int actual = ReadArray(reader, localName, namespaceUri, array, read, array.Length - read);
+                    if (actual == 0)
+                        break;
+                    read += actual;
+                }
+                if (totalRead > maxArrayLength - read)
+                    XmlExceptionHelper.ThrowMaxArrayLengthOrMaxItemsQuotaExceeded(reader, maxArrayLength);
+                totalRead += read;
+                if (read < array.Length || reader.NodeType == XmlNodeType.EndElement)
+                    break;
+                if (arrays == null)
+                    arrays = new TArray[32][];
+                arrays[arrayCount++] = array;
+                count = count * 2;
+            }
+            if (totalRead != array.Length || arrayCount > 0)
+            {
+                TArray[] newArray = new TArray[totalRead];
+                int offset = 0;
+                for (int i = 0; i < arrayCount; i++)
+                {
+                    Array.Copy(arrays[i], 0, newArray, offset, arrays[i].Length);
+                    offset += arrays[i].Length;
+                }
+                Array.Copy(array, 0, newArray, offset, totalRead - offset);
+                array = newArray;
+            }
+            return array;
+        }
+
+        public void WriteArray(XmlDictionaryWriter writer, string prefix, TArgument localName, TArgument namespaceUri, XmlDictionaryReader reader)
+        {
+            int count;
+            if (reader.TryGetArrayLength(out count))
+                count = Math.Min(count, 256);
+            else
+                count = 256;
+            TArray[] array = new TArray[count];
+            while (true)
+            {
+                int actual = ReadArray(reader, localName, namespaceUri, array, 0, array.Length);
+                if (actual == 0)
+                    break;
+                WriteArray(writer, prefix, localName, namespaceUri, array, 0, actual);
+            }
+        }
+
+        protected abstract int ReadArray(XmlDictionaryReader reader, TArgument localName, TArgument namespaceUri, TArray[] array, int offset, int count);
+        protected abstract void WriteArray(XmlDictionaryWriter writer, string prefix, TArgument localName, TArgument namespaceUri, TArray[] array, int offset, int count);
+    }
+
+    // Supported array types
+    // bool
+    // Int16
+    // Int32
+    // Int64
+    // Float
+    // Double
+    // Decimal
+    // DateTime
+    // Guid
+    // TimeSpan
+
+    // Int8 is not supported since sbyte[] is non-cls compliant, and uncommon
+    // UniqueId is not supported since elements may be variable size strings
+
+    class BooleanArrayHelperWithString : ArrayHelper<string, bool>
+    {
+        static public readonly BooleanArrayHelperWithString Instance = new BooleanArrayHelperWithString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, string localName, string namespaceUri, bool[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, string localName, string namespaceUri, bool[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class BooleanArrayHelperWithDictionaryString : ArrayHelper<XmlDictionaryString, bool>
+    {
+        static public readonly BooleanArrayHelperWithDictionaryString Instance = new BooleanArrayHelperWithDictionaryString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, XmlDictionaryString localName, XmlDictionaryString namespaceUri, bool[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, XmlDictionaryString localName, XmlDictionaryString namespaceUri, bool[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class Int16ArrayHelperWithString : ArrayHelper<string, Int16>
+    {
+        static public readonly Int16ArrayHelperWithString Instance = new Int16ArrayHelperWithString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, string localName, string namespaceUri, Int16[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, string localName, string namespaceUri, Int16[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class Int16ArrayHelperWithDictionaryString : ArrayHelper<XmlDictionaryString, Int16>
+    {
+        static public readonly Int16ArrayHelperWithDictionaryString Instance = new Int16ArrayHelperWithDictionaryString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, XmlDictionaryString localName, XmlDictionaryString namespaceUri, Int16[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, XmlDictionaryString localName, XmlDictionaryString namespaceUri, Int16[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class Int32ArrayHelperWithString : ArrayHelper<string, Int32>
+    {
+        static public readonly Int32ArrayHelperWithString Instance = new Int32ArrayHelperWithString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, string localName, string namespaceUri, Int32[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, string localName, string namespaceUri, Int32[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class Int32ArrayHelperWithDictionaryString : ArrayHelper<XmlDictionaryString, Int32>
+    {
+        static public readonly Int32ArrayHelperWithDictionaryString Instance = new Int32ArrayHelperWithDictionaryString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, XmlDictionaryString localName, XmlDictionaryString namespaceUri, Int32[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, XmlDictionaryString localName, XmlDictionaryString namespaceUri, Int32[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class Int64ArrayHelperWithString : ArrayHelper<string, Int64>
+    {
+        static public readonly Int64ArrayHelperWithString Instance = new Int64ArrayHelperWithString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, string localName, string namespaceUri, Int64[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, string localName, string namespaceUri, Int64[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class Int64ArrayHelperWithDictionaryString : ArrayHelper<XmlDictionaryString, Int64>
+    {
+        static public readonly Int64ArrayHelperWithDictionaryString Instance = new Int64ArrayHelperWithDictionaryString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, XmlDictionaryString localName, XmlDictionaryString namespaceUri, Int64[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, XmlDictionaryString localName, XmlDictionaryString namespaceUri, Int64[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class SingleArrayHelperWithString : ArrayHelper<string, float>
+    {
+        static public readonly SingleArrayHelperWithString Instance = new SingleArrayHelperWithString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, string localName, string namespaceUri, float[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, string localName, string namespaceUri, float[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class SingleArrayHelperWithDictionaryString : ArrayHelper<XmlDictionaryString, float>
+    {
+        static public readonly SingleArrayHelperWithDictionaryString Instance = new SingleArrayHelperWithDictionaryString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, XmlDictionaryString localName, XmlDictionaryString namespaceUri, float[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, XmlDictionaryString localName, XmlDictionaryString namespaceUri, float[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class DoubleArrayHelperWithString : ArrayHelper<string, double>
+    {
+        static public readonly DoubleArrayHelperWithString Instance = new DoubleArrayHelperWithString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, string localName, string namespaceUri, double[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, string localName, string namespaceUri, double[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class DoubleArrayHelperWithDictionaryString : ArrayHelper<XmlDictionaryString, double>
+    {
+        static public readonly DoubleArrayHelperWithDictionaryString Instance = new DoubleArrayHelperWithDictionaryString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, XmlDictionaryString localName, XmlDictionaryString namespaceUri, double[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, XmlDictionaryString localName, XmlDictionaryString namespaceUri, double[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class DecimalArrayHelperWithString : ArrayHelper<string, decimal>
+    {
+        static public readonly DecimalArrayHelperWithString Instance = new DecimalArrayHelperWithString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, string localName, string namespaceUri, decimal[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, string localName, string namespaceUri, decimal[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class DecimalArrayHelperWithDictionaryString : ArrayHelper<XmlDictionaryString, decimal>
+    {
+        static public readonly DecimalArrayHelperWithDictionaryString Instance = new DecimalArrayHelperWithDictionaryString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, XmlDictionaryString localName, XmlDictionaryString namespaceUri, decimal[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, XmlDictionaryString localName, XmlDictionaryString namespaceUri, decimal[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class DateTimeArrayHelperWithString : ArrayHelper<string, DateTime>
+    {
+        static public readonly DateTimeArrayHelperWithString Instance = new DateTimeArrayHelperWithString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, string localName, string namespaceUri, DateTime[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, string localName, string namespaceUri, DateTime[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class DateTimeArrayHelperWithDictionaryString : ArrayHelper<XmlDictionaryString, DateTime>
+    {
+        static public readonly DateTimeArrayHelperWithDictionaryString Instance = new DateTimeArrayHelperWithDictionaryString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, XmlDictionaryString localName, XmlDictionaryString namespaceUri, DateTime[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, XmlDictionaryString localName, XmlDictionaryString namespaceUri, DateTime[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class GuidArrayHelperWithString : ArrayHelper<string, Guid>
+    {
+        static public readonly GuidArrayHelperWithString Instance = new GuidArrayHelperWithString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, string localName, string namespaceUri, Guid[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, string localName, string namespaceUri, Guid[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class GuidArrayHelperWithDictionaryString : ArrayHelper<XmlDictionaryString, Guid>
+    {
+        static public readonly GuidArrayHelperWithDictionaryString Instance = new GuidArrayHelperWithDictionaryString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, XmlDictionaryString localName, XmlDictionaryString namespaceUri, Guid[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, XmlDictionaryString localName, XmlDictionaryString namespaceUri, Guid[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class TimeSpanArrayHelperWithString : ArrayHelper<string, TimeSpan>
+    {
+        static public readonly TimeSpanArrayHelperWithString Instance = new TimeSpanArrayHelperWithString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, string localName, string namespaceUri, TimeSpan[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, string localName, string namespaceUri, TimeSpan[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+
+    class TimeSpanArrayHelperWithDictionaryString : ArrayHelper<XmlDictionaryString, TimeSpan>
+    {
+        static public readonly TimeSpanArrayHelperWithDictionaryString Instance = new TimeSpanArrayHelperWithDictionaryString();
+
+        protected override int ReadArray(XmlDictionaryReader reader, XmlDictionaryString localName, XmlDictionaryString namespaceUri, TimeSpan[] array, int offset, int count)
+        {
+            return reader.ReadArray(localName, namespaceUri, array, offset, count);
+        }
+
+        protected override void WriteArray(XmlDictionaryWriter writer, string prefix, XmlDictionaryString localName, XmlDictionaryString namespaceUri, TimeSpan[] array, int offset, int count)
+        {
+            writer.WriteArray(prefix, localName, namespaceUri, array, offset, count);
+        }
+    }
+}

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/IFragmentCapableXmlDictionaryWriter.cs

@@ -0,0 +1,19 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.Xml
+{
+    using System.IO;
+
+    public interface IFragmentCapableXmlDictionaryWriter
+    {
+        bool CanFragment { get; }
+
+        void StartFragment(Stream stream, bool generateSelfContainedTextFragment);
+
+        void EndFragment();
+
+        void WriteFragment(byte[] buffer, int offset, int count);
+    }
+}

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/IStreamProvider.cs

@@ -0,0 +1,13 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.Xml
+{
+    using System.IO;
+
+    public interface IStreamProvider
+    {
+        Stream GetStream();
+        void ReleaseStream(Stream stream);
+    }
+}

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/IXmlDictionary.cs

@@ -0,0 +1,12 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//-----------------------------------------------------------------------------
+namespace System.Xml
+{
+    public interface IXmlDictionary
+    {
+        bool TryLookup(string value, out XmlDictionaryString result);
+        bool TryLookup(int key, out XmlDictionaryString result);
+        bool TryLookup(XmlDictionaryString value, out XmlDictionaryString result);
+    }
+}

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/PrefixHandle.cs

@@ -0,0 +1,253 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.Xml
+{
+    using System.Runtime;
+
+    enum PrefixHandleType
+    {
+        Empty,
+        A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z,
+        Buffer,
+        Max,
+    }
+
+    class PrefixHandle
+    {
+        XmlBufferReader bufferReader;
+        PrefixHandleType type;
+        int offset;
+        int length;
+        static string[] prefixStrings = { "", "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z" };
+        static byte[] prefixBuffer = { (byte)'a', (byte)'b', (byte)'c', (byte)'d', (byte)'e', (byte)'f', (byte)'g', (byte)'h', (byte)'i', (byte)'j', (byte)'k', (byte)'l', (byte)'m', (byte)'n', (byte)'o', (byte)'p', (byte)'q', (byte)'r', (byte)'s', (byte)'t', (byte)'u', (byte)'v', (byte)'w', (byte)'x', (byte)'y', (byte)'z' };
+
+        public PrefixHandle(XmlBufferReader bufferReader)
+        {
+            this.bufferReader = bufferReader;
+        }
+
+        public void SetValue(PrefixHandleType type)
+        {
+            Fx.Assert(type != PrefixHandleType.Buffer, "");
+            this.type = type;
+        }
+
+        public void SetValue(PrefixHandle prefix)
+        {
+            this.type = prefix.type;
+            this.offset = prefix.offset;
+            this.length = prefix.length;
+        }
+
+        public void SetValue(int offset, int length)
+        {
+            if (length == 0)
+            {
+                SetValue(PrefixHandleType.Empty);
+                return;
+            }
+
+            if (length == 1)
+            {
+                byte ch = bufferReader.GetByte(offset);
+                if (ch >= 'a' && ch <= 'z')
+                {
+                    SetValue(GetAlphaPrefix(ch - 'a'));
+                    return;
+                }
+            }
+
+            this.type = PrefixHandleType.Buffer;
+            this.offset = offset;
+            this.length = length;
+        }
+
+        public bool IsEmpty
+        {
+            get
+            {
+                return type == PrefixHandleType.Empty;
+            }
+        }
+
+        public bool IsXmlns
+        {
+            get
+            {
+                if (type != PrefixHandleType.Buffer)
+                    return false;
+                if (this.length != 5)
+                    return false;
+                byte[] buffer = bufferReader.Buffer;
+                int offset = this.offset;
+                return buffer[offset + 0] == 'x' &&
+                       buffer[offset + 1] == 'm' &&
+                       buffer[offset + 2] == 'l' &&
+                       buffer[offset + 3] == 'n' &&
+                       buffer[offset + 4] == 's';
+            }
+        }
+
+        public bool IsXml
+        {
+            get
+            {
+                if (type != PrefixHandleType.Buffer)
+                    return false;
+                if (this.length != 3)
+                    return false;
+                byte[] buffer = bufferReader.Buffer;
+                int offset = this.offset;
+                return buffer[offset + 0] == 'x' &&
+                       buffer[offset + 1] == 'm' &&
+                       buffer[offset + 2] == 'l';
+            }
+        }
+
+        public bool TryGetShortPrefix(out PrefixHandleType type)
+        {
+            type = this.type;
+            return (type != PrefixHandleType.Buffer);
+        }
+
+        public static string GetString(PrefixHandleType type)
+        {
+            Fx.Assert(type != PrefixHandleType.Buffer, "");
+            return prefixStrings[(int)type];
+        }
+
+        public static PrefixHandleType GetAlphaPrefix(int index)
+        {
+            Fx.Assert(index >= 0 && index < 26, "");
+            return (PrefixHandleType)(PrefixHandleType.A + index);
+        }
+
+        public static byte[] GetString(PrefixHandleType type, out int offset, out int length)
+        {
+            Fx.Assert(type != PrefixHandleType.Buffer, "");
+            if (type == PrefixHandleType.Empty)
+            {
+                offset = 0;
+                length = 0;
+            }
+            else
+            {
+                length = 1;
+                offset = (int)(type - PrefixHandleType.A);
+            }
+            return prefixBuffer;
+        }
+
+        public string GetString(XmlNameTable nameTable)
+        {
+            PrefixHandleType type = this.type;
+            if (type != PrefixHandleType.Buffer)
+                return GetString(type);
+            else
+                return bufferReader.GetString(offset, length, nameTable);
+        }
+
+        public string GetString()
+        {
+            PrefixHandleType type = this.type;
+            if (type != PrefixHandleType.Buffer)
+                return GetString(type);
+            else
+                return bufferReader.GetString(offset, length);
+        }
+
+        public byte[] GetString(out int offset, out int length)
+        {
+            PrefixHandleType type = this.type;
+            if (type != PrefixHandleType.Buffer)
+                return GetString(type, out offset, out length);
+            else
+            {
+                offset = this.offset;
+                length = this.length;
+                return bufferReader.Buffer;
+            }
+        }
+
+        public int CompareTo(PrefixHandle that)
+        {
+            return GetString().CompareTo(that.GetString());
+        }
+
+        bool Equals2(PrefixHandle prefix2)
+        {
+            PrefixHandleType type1 = this.type;
+            PrefixHandleType type2 = prefix2.type;
+            if (type1 != type2)
+                return false;
+            if (type1 != PrefixHandleType.Buffer)
+                return true;
+            if (this.bufferReader == prefix2.bufferReader)
+                return bufferReader.Equals2(this.offset, this.length, prefix2.offset, prefix2.length);
+            else
+                return bufferReader.Equals2(this.offset, this.length, prefix2.bufferReader, prefix2.offset, prefix2.length);
+        }
+
+        bool Equals2(string prefix2)
+        {
+            PrefixHandleType type = this.type;
+            if (type != PrefixHandleType.Buffer)
+                return GetString(type) == prefix2;
+            return bufferReader.Equals2(this.offset, this.length, prefix2);
+        }
+
+        bool Equals2(XmlDictionaryString prefix2)
+        {
+            return Equals2(prefix2.Value);
+        }
+
+        static public bool operator ==(PrefixHandle prefix1, string prefix2)
+        {
+            return prefix1.Equals2(prefix2);
+        }
+
+        static public bool operator !=(PrefixHandle prefix1, string prefix2)
+        {
+            return !prefix1.Equals2(prefix2);
+        }
+
+        static public bool operator ==(PrefixHandle prefix1, XmlDictionaryString prefix2)
+        {
+            return prefix1.Equals2(prefix2);
+        }
+
+        static public bool operator !=(PrefixHandle prefix1, XmlDictionaryString prefix2)
+        {
+            return !prefix1.Equals2(prefix2);
+        }
+
+        static public bool operator ==(PrefixHandle prefix1, PrefixHandle prefix2)
+        {
+            return prefix1.Equals2(prefix2);
+        }
+
+        static public bool operator !=(PrefixHandle prefix1, PrefixHandle prefix2)
+        {
+            return !prefix1.Equals2(prefix2);
+        }
+
+        public override bool Equals(object obj)
+        {
+            PrefixHandle that = obj as PrefixHandle;
+            if (object.ReferenceEquals(that, null))
+                return false;
+            return this == that;
+        }
+
+        public override string ToString()
+        {
+            return GetString();
+        }
+
+        public override int GetHashCode()
+        {
+            return GetString().GetHashCode();
+        }
+    }
+}

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/StringHandle.cs

@@ -0,0 +1,300 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+
+namespace System.Xml
+{
+    using System.Runtime;
+
+    enum StringHandleConstStringType
+    {
+        Type = 0,
+        Root = 1,
+        Item = 2
+    }
+
+    class StringHandle
+    {
+        XmlBufferReader bufferReader;
+        StringHandleType type;
+        int key;
+        int offset;
+        int length;
+        static string[] constStrings = {
+                                            "type",
+                                            "root",
+                                            "item"
+                                       };
+
+        public StringHandle(XmlBufferReader bufferReader)
+        {
+            this.bufferReader = bufferReader;
+            SetValue(0, 0);
+        }
+
+        public void SetValue(int offset, int length)
+        {
+            this.type = StringHandleType.UTF8;
+            this.offset = offset;
+            this.length = length;
+        }
+
+        public void SetConstantValue(StringHandleConstStringType constStringType)
+        {
+            type = StringHandleType.ConstString;
+            key = (int)constStringType;
+        }
+
+        public void SetValue(int offset, int length, bool escaped)
+        {
+            this.type = (escaped ? StringHandleType.EscapedUTF8 : StringHandleType.UTF8);
+            this.offset = offset;
+            this.length = length;
+        }
+
+        public void SetValue(int key)
+        {
+            this.type = StringHandleType.Dictionary;
+            this.key = key;
+        }
+
+        public void SetValue(StringHandle value)
+        {
+            this.type = value.type;
+            this.key = value.key;
+            this.offset = value.offset;
+            this.length = value.length;
+        }
+
+        public bool IsEmpty
+        {
+            get
+            {
+                if (type == StringHandleType.UTF8)
+                    return length == 0;
+                return Equals2(string.Empty);
+            }
+        }
+
+        public bool IsXmlns
+        {
+            get
+            {
+                if (type == StringHandleType.UTF8)
+                {
+                    if (this.length != 5)
+                        return false;
+                    byte[] buffer = bufferReader.Buffer;
+                    int offset = this.offset;
+                    return buffer[offset + 0] == 'x' &&
+                           buffer[offset + 1] == 'm' &&
+                           buffer[offset + 2] == 'l' &&
+                           buffer[offset + 3] == 'n' &&
+                           buffer[offset + 4] == 's';
+                }
+                return Equals2("xmlns");
+            }
+        }
+
+        public void ToPrefixHandle(PrefixHandle prefix)
+        {
+            Fx.Assert(type == StringHandleType.UTF8, "");
+            prefix.SetValue(offset, length);
+        }
+
+        public string GetString(XmlNameTable nameTable)
+        {
+            StringHandleType type = this.type;
+            if (type == StringHandleType.UTF8)
+                return bufferReader.GetString(offset, length, nameTable);
+            if (type == StringHandleType.Dictionary)
+                return nameTable.Add(bufferReader.GetDictionaryString(key).Value);
+            if (type == StringHandleType.ConstString)
+                return nameTable.Add(constStrings[key]);
+            Fx.Assert(type == StringHandleType.EscapedUTF8, "");
+            return bufferReader.GetEscapedString(offset, length, nameTable);
+        }
+
+        public string GetString()
+        {
+            StringHandleType type = this.type;
+            if (type == StringHandleType.UTF8)
+                return bufferReader.GetString(offset, length);
+            if (type == StringHandleType.Dictionary)
+                return bufferReader.GetDictionaryString(key).Value;
+            if (type == StringHandleType.ConstString)
+                return constStrings[key];
+            Fx.Assert(type == StringHandleType.EscapedUTF8, "");
+            return bufferReader.GetEscapedString(offset, length);
+        }
+
+        public byte[] GetString(out int offset, out int length)
+        {
+            StringHandleType type = this.type;
+            if (type == StringHandleType.UTF8)
+            {
+                offset = this.offset;
+                length = this.length;
+                return bufferReader.Buffer;
+            }
+            if (type == StringHandleType.Dictionary)
+            {
+                byte[] buffer = bufferReader.GetDictionaryString(this.key).ToUTF8();
+                offset = 0;
+                length = buffer.Length;
+                return buffer;
+            }
+            if (type == StringHandleType.ConstString)
+            {
+                byte[] buffer = XmlConverter.ToBytes(constStrings[key]);
+                offset = 0;
+                length = buffer.Length;
+                return buffer;
+            }
+            else
+            {
+                Fx.Assert(type == StringHandleType.EscapedUTF8, "");
+                byte[] buffer = XmlConverter.ToBytes(bufferReader.GetEscapedString(this.offset, this.length));
+                offset = 0;
+                length = buffer.Length;
+                return buffer;
+            }
+        }
+
+        public bool TryGetDictionaryString(out XmlDictionaryString value)
+        {
+            if (type == StringHandleType.Dictionary)
+            {
+                value = bufferReader.GetDictionaryString(key);
+                return true;
+            }
+            else if (IsEmpty)
+            {
+                value = XmlDictionaryString.Empty;
+                return true;
+            }
+
+            value = null;
+            return false;
+        }
+
+        public override string ToString()
+        {
+            return GetString();
+        }
+
+        bool Equals2(int key2, XmlBufferReader bufferReader2)
+        {
+            StringHandleType type = this.type;
+            if (type == StringHandleType.Dictionary)
+                return bufferReader.Equals2(this.key, key2, bufferReader2);
+            if (type == StringHandleType.UTF8)
+                return bufferReader.Equals2(this.offset, this.length, bufferReader2.GetDictionaryString(key2).Value);
+            Fx.Assert(type == StringHandleType.EscapedUTF8 || type == StringHandleType.ConstString, "");
+            return GetString() == bufferReader.GetDictionaryString(key2).Value;
+        }
+
+        bool Equals2(XmlDictionaryString xmlString2)
+        {
+            StringHandleType type = this.type;
+            if (type == StringHandleType.Dictionary)
+                return bufferReader.Equals2(this.key, xmlString2);
+            if (type == StringHandleType.UTF8)
+                return bufferReader.Equals2(this.offset, this.length, xmlString2.ToUTF8());
+            Fx.Assert(type == StringHandleType.EscapedUTF8 || type == StringHandleType.ConstString, "");
+            return GetString() == xmlString2.Value;
+        }
+
+        bool Equals2(string s2)
+        {
+            StringHandleType type = this.type;
+            if (type == StringHandleType.Dictionary)
+                return bufferReader.GetDictionaryString(this.key).Value == s2;
+            if (type == StringHandleType.UTF8)
+                return bufferReader.Equals2(this.offset, this.length, s2);
+            Fx.Assert(type == StringHandleType.EscapedUTF8 || type == StringHandleType.ConstString, "");
+            return GetString() == s2;
+        }
+
+        bool Equals2(int offset2, int length2, XmlBufferReader bufferReader2)
+        {
+            StringHandleType type = this.type;
+            if (type == StringHandleType.Dictionary)
+                return bufferReader2.Equals2(offset2, length2, bufferReader.GetDictionaryString(this.key).Value);
+            if (type == StringHandleType.UTF8)
+                return bufferReader.Equals2(this.offset, this.length, bufferReader2, offset2, length2);
+            Fx.Assert(type == StringHandleType.EscapedUTF8 || type == StringHandleType.ConstString, "");
+            return GetString() == bufferReader.GetString(offset2, length2);
+        }
+
+        bool Equals2(StringHandle s2)
+        {
+            StringHandleType type = s2.type;
+            if (type == StringHandleType.Dictionary)
+                return Equals2(s2.key, s2.bufferReader);
+            if (type == StringHandleType.UTF8)
+                return Equals2(s2.offset, s2.length, s2.bufferReader);
+            Fx.Assert(type == StringHandleType.EscapedUTF8 || type == StringHandleType.ConstString, "");
+            return Equals2(s2.GetString());
+        }
+
+        static public bool operator ==(StringHandle s1, XmlDictionaryString xmlString2)
+        {
+            return s1.Equals2(xmlString2);
+        }
+
+        static public bool operator !=(StringHandle s1, XmlDictionaryString xmlString2)
+        {
+            return !s1.Equals2(xmlString2);
+        }
+
+        static public bool operator ==(StringHandle s1, string s2)
+        {
+            return s1.Equals2(s2);
+        }
+
+        static public bool operator !=(StringHandle s1, string s2)
+        {
+            return !s1.Equals2(s2);
+        }
+
+        static public bool operator ==(StringHandle s1, StringHandle s2)
+        {
+            return s1.Equals2(s2);
+        }
+
+        static public bool operator !=(StringHandle s1, StringHandle s2)
+        {
+            return !s1.Equals2(s2);
+        }
+
+        public int CompareTo(StringHandle that)
+        {
+            if (this.type == StringHandleType.UTF8 && that.type == StringHandleType.UTF8)
+                return bufferReader.Compare(this.offset, this.length, that.offset, that.length);
+            else
+                return string.Compare(this.GetString(), that.GetString(), StringComparison.Ordinal);
+        }
+
+        public override bool Equals(object obj)
+        {
+            StringHandle that = obj as StringHandle;
+            if (object.ReferenceEquals(that, null))
+                return false;
+            return this == that;
+        }
+
+        public override int GetHashCode()
+        {
+            return GetString().GetHashCode();
+        }
+
+        enum StringHandleType
+        {
+            Dictionary,
+            UTF8,
+            EscapedUTF8,
+            ConstString
+        }
+    }
+}

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/UniqueID.cs

@@ -0,0 +1,431 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.Xml
+{
+    using System.Runtime;
+    using System.Runtime.Serialization; // for SR
+    using System.Security;
+
+    public class UniqueId
+    {
+        Int64 idLow;
+        Int64 idHigh;
+
+        [Fx.Tag.SecurityNote(Critical = "Some SecurityCritical unsafe code assumes that this field has been validated.")]
+        [SecurityCritical]
+        string s;
+        const int guidLength = 16;
+        const int uuidLength = 45;
+
+        static short[] char2val = new short[256]
+        {
+                /*    0-15 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*   16-31 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*   32-47 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*   48-63 */ 0x000, 0x010, 0x020, 0x030, 0x040, 0x050, 0x060, 0x070, 0x080, 0x090, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*   64-79 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*   80-95 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*  96-111 */ 0x100, 0x0A0, 0x0B0, 0x0C0, 0x0D0, 0x0E0, 0x0F0, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /* 112-127 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+
+                /*    0-15 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*   16-31 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*   32-47 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*   48-63 */ 0x000, 0x001, 0x002, 0x003, 0x004, 0x005, 0x006, 0x007, 0x008, 0x009, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*   64-79 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*   80-95 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /*  96-111 */ 0x100, 0x00A, 0x00B, 0x00C, 0x00D, 0x00E, 0x00F, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+                /* 112-127 */ 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100, 0x100,
+        };
+
+        const string val2char = "0123456789abcdef";
+
+        public UniqueId() : this(Guid.NewGuid())
+        {
+        }
+
+        public UniqueId(Guid guid) : this(guid.ToByteArray())
+        {
+        }
+
+        public UniqueId(byte[] guid) : this(guid, 0)
+        {
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code.",
+            Safe = "Unsafe code is effectively encapsulated, all inputs are validated.")]
+        [SecuritySafeCritical]
+        unsafe public UniqueId(byte[] guid, int offset)
+        {
+            if (guid == null)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("guid"));
+            if (offset < 0)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("offset", SR.GetString(SR.ValueMustBeNonNegative)));
+            if (offset > guid.Length)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("offset", SR.GetString(SR.OffsetExceedsBufferSize, guid.Length)));
+            if (guidLength > guid.Length - offset)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentException(SR.GetString(SR.XmlArrayTooSmallInput, guidLength), "guid"));
+            fixed (byte* pb = &guid[offset])
+            {
+                this.idLow = UnsafeGetInt64(pb);
+                this.idHigh = UnsafeGetInt64(&pb[8]);
+            }
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code.",
+            Safe = "Unsafe code is effectively encapsulated, all inputs are validated.")]
+        [SecuritySafeCritical]
+        unsafe public UniqueId(string value)
+        {
+            if (value == null)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value");
+            if (value.Length == 0)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new FormatException(SR.GetString(SR.XmlInvalidUniqueId)));
+            fixed (char* pch = value)
+            {
+                UnsafeParse(pch, value.Length);
+            }
+            this.s = value;
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code.",
+            Safe = "Unsafe code is effectively encapsulated, all inputs are validated.")]
+        [SecuritySafeCritical]
+        unsafe public UniqueId(char[] chars, int offset, int count)
+        {
+            if (chars == null)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("chars"));
+            if (offset < 0)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("offset", SR.GetString(SR.ValueMustBeNonNegative)));
+            if (offset > chars.Length)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("offset", SR.GetString(SR.OffsetExceedsBufferSize, chars.Length)));
+            if (count < 0)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("count", SR.GetString(SR.ValueMustBeNonNegative)));
+            if (count > chars.Length - offset)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("count", SR.GetString(SR.SizeExceedsRemainingBufferSpace, chars.Length - offset)));
+            if (count == 0)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new FormatException(SR.GetString(SR.XmlInvalidUniqueId)));
+            fixed (char* pch = &chars[offset])
+            {
+                UnsafeParse(pch, count);
+            }
+            if (!IsGuid)
+            {
+                this.s = new string(chars, offset, count);
+            }
+        }
+
+        
+        public int CharArrayLength
+        {
+            [Fx.Tag.SecurityNote(Critical = "Accesses critical field 's'.",
+                Safe = "Doesn't leak any control or data.")]
+            [SecuritySafeCritical]
+            get
+            {
+                if (s != null)
+                    return s.Length;
+
+                return uuidLength;
+            }
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code. Caller needs to validate arguments.")]
+        [SecurityCritical]
+        unsafe int UnsafeDecode(short* char2val, char ch1, char ch2)
+        {
+            if ((ch1 | ch2) >= 0x80)
+                return 0x100;
+
+            return char2val[ch1] | char2val[0x80 + ch2];
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code. Caller needs to validate arguments.")]
+        [SecurityCritical]
+        unsafe void UnsafeEncode(char* val2char, byte b, char* pch)
+        {
+            pch[0] = val2char[b >> 4];
+            pch[1] = val2char[b & 0x0F];
+        }
+
+        public bool IsGuid
+        {
+            get
+            {
+                return ((idLow | idHigh) != 0);
+            }
+        }
+
+        // It must be the case that comparing UniqueId's as strings yields the same result as comparing UniqueId's as
+        // their binary equivalent.  This means that there must be a 1-1 relationship between a string and its binary
+        // equivalent.  Therefore, for example, we cannot accept both upper and lower case hex chars since there would
+        // then be more than 1 string that mapped to a binary equivalent.
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code. Caller needs to validate arguments.")]
+        [SecurityCritical]
+        unsafe void UnsafeParse(char* chars, int charCount)
+        {
+            //           1         2         3         4
+            // 012345678901234567890123456789012345678901234
+            // urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+
+            if (charCount != uuidLength ||
+                chars[0] != 'u' || chars[1] != 'r' || chars[2] != 'n' || chars[3] != ':' ||
+                chars[4] != 'u' || chars[5] != 'u' || chars[6] != 'i' || chars[7] != 'd' || chars[8] != ':' ||
+                chars[17] != '-' || chars[22] != '-' || chars[27] != '-' || chars[32] != '-')
+            {
+                return;
+            }
+
+            byte* bytes = stackalloc byte[guidLength];
+
+            int i = 0;
+            int j = 0;
+            fixed (short* ps = char2val)
+            {
+                short* _char2val = ps;
+
+                //   0         1         2         3         4
+                //   012345678901234567890123456789012345678901234
+                //   urn:uuid:aabbccdd-eeff-gghh-0011-223344556677
+                // 
+                //   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+                //   ddccbbaaffeehhgg0011223344556677
+
+                i = UnsafeDecode(_char2val, chars[15], chars[16]); bytes[0]  = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[13], chars[14]); bytes[1]  = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[11], chars[12]); bytes[2]  = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[9],  chars[10]); bytes[3]  = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[20], chars[21]); bytes[4]  = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[18], chars[19]); bytes[5]  = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[25], chars[26]); bytes[6]  = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[23], chars[24]); bytes[7]  = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[28], chars[29]); bytes[8]  = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[30], chars[31]); bytes[9]  = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[33], chars[34]); bytes[10] = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[35], chars[36]); bytes[11] = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[37], chars[38]); bytes[12] = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[39], chars[40]); bytes[13] = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[41], chars[42]); bytes[14] = (byte)i; j |= i;
+                i = UnsafeDecode(_char2val, chars[43], chars[44]); bytes[15] = (byte)i; j |= i;
+
+                if (j >= 0x100)
+                    return;
+
+                this.idLow = UnsafeGetInt64(bytes);
+                this.idHigh = UnsafeGetInt64(&bytes[8]);
+            }
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code.",
+            Safe = "Unsafe code is effectively encapsulated, all inputs are validated.")]
+        [SecuritySafeCritical]
+        unsafe public int ToCharArray(char[] chars, int offset)
+        {
+            int count = CharArrayLength;
+
+            if (chars == null)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("chars"));
+
+            if (offset < 0)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("offset", SR.GetString(SR.ValueMustBeNonNegative)));
+            if (offset > chars.Length)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("offset", SR.GetString(SR.OffsetExceedsBufferSize, chars.Length)));
+
+            if (count > chars.Length - offset)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("chars", SR.GetString(SR.XmlArrayTooSmallOutput, count)));
+
+            if (s != null)
+            {
+                s.CopyTo(0, chars, offset, count);
+            }
+            else
+            {
+                byte* bytes = stackalloc byte[guidLength];
+                UnsafeSetInt64(this.idLow, bytes);
+                UnsafeSetInt64(this.idHigh, &bytes[8]);
+
+                fixed (char* _pch = &chars[offset])
+                {
+                    char* pch = _pch;
+                    pch[0] = 'u';
+                    pch[1] = 'r';
+                    pch[2] = 'n';
+                    pch[3] = ':';
+                    pch[4] = 'u';
+                    pch[5] = 'u';
+                    pch[6] = 'i';
+                    pch[7] = 'd';
+                    pch[8] = ':';
+                    pch[17] = '-';
+                    pch[22] = '-';
+                    pch[27] = '-';
+                    pch[32] = '-';
+
+                    fixed (char* ps = val2char)
+                    {
+                        char* _val2char = ps;
+                        UnsafeEncode(_val2char, bytes[0], &pch[15]);
+                        UnsafeEncode(_val2char, bytes[1], &pch[13]);
+                        UnsafeEncode(_val2char, bytes[2], &pch[11]);
+                        UnsafeEncode(_val2char, bytes[3], &pch[9]);
+                        UnsafeEncode(_val2char, bytes[4], &pch[20]);
+                        UnsafeEncode(_val2char, bytes[5], &pch[18]);
+                        UnsafeEncode(_val2char, bytes[6], &pch[25]);
+                        UnsafeEncode(_val2char, bytes[7], &pch[23]);
+                        UnsafeEncode(_val2char, bytes[8], &pch[28]);
+                        UnsafeEncode(_val2char, bytes[9], &pch[30]);
+                        UnsafeEncode(_val2char, bytes[10], &pch[33]);
+                        UnsafeEncode(_val2char, bytes[11], &pch[35]);
+                        UnsafeEncode(_val2char, bytes[12], &pch[37]);
+                        UnsafeEncode(_val2char, bytes[13], &pch[39]);
+                        UnsafeEncode(_val2char, bytes[14], &pch[41]);
+                        UnsafeEncode(_val2char, bytes[15], &pch[43]);
+                    }
+                }
+            }
+
+            return count;
+        }
+
+        public bool TryGetGuid(out Guid guid)
+        {
+            byte[] buffer = new byte[guidLength];
+            if (!TryGetGuid(buffer, 0))
+            {
+                guid = Guid.Empty;
+                return false;
+            }
+
+            guid = new Guid(buffer);
+            return true;
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code.",
+            Safe = "Unsafe code is effectively encapsulated, all inputs are validated.")]
+        [SecuritySafeCritical]
+        unsafe public bool TryGetGuid(byte[] buffer, int offset)
+        {
+            if (!IsGuid)
+                return false;
+
+            if (buffer == null)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("buffer"));
+
+            if (offset < 0)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("offset", SR.GetString(SR.ValueMustBeNonNegative)));
+            if (offset > buffer.Length)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("offset", SR.GetString(SR.OffsetExceedsBufferSize, buffer.Length)));
+
+            if (guidLength > buffer.Length - offset)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("buffer", SR.GetString(SR.XmlArrayTooSmallOutput, guidLength)));
+
+            fixed (byte* pb = &buffer[offset])
+            {
+                UnsafeSetInt64(this.idLow, pb);
+                UnsafeSetInt64(this.idHigh, &pb[8]);
+            }
+
+            return true;
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Accesses critical field 's'.",
+            Safe = "Doesn't allow unchecked write access to the field.")]
+        [SecuritySafeCritical]
+        unsafe public override string ToString()
+        {
+            if (s == null)
+            {
+                int length = CharArrayLength;
+                char[] chars = new char[length];
+                ToCharArray(chars, 0);
+                s = new string(chars, 0, length);
+            }
+            return s;
+        }
+
+        static public bool operator ==(UniqueId id1, UniqueId id2)
+        {
+            if (object.ReferenceEquals(id1, null) && object.ReferenceEquals(id2, null))
+                return true;
+
+            if (object.ReferenceEquals(id1, null) || object.ReferenceEquals(id2, null))
+                return false;
+
+#pragma warning suppress 56506 // [....], checks for whether id1 and id2 are null done above.
+            if (id1.IsGuid && id2.IsGuid)
+            {
+                return id1.idLow == id2.idLow && id1.idHigh == id2.idHigh;
+            }
+
+            return id1.ToString() == id2.ToString();
+        }
+
+        static public bool operator !=(UniqueId id1, UniqueId id2)
+        {
+            return !(id1 == id2);
+        }
+
+        public override bool Equals(object obj)
+        {
+            return this == (obj as UniqueId);
+        }
+
+        public override int GetHashCode()
+        {
+            if (IsGuid)
+            {
+                Int64 hash = (idLow ^ idHigh);
+                return ((int)(hash >> 32)) ^ ((int)hash);
+            }
+            else
+            {
+                return ToString().GetHashCode();
+            }
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code. Caller needs to validate arguments.")]
+        [SecurityCritical]
+        unsafe Int64 UnsafeGetInt64(byte* pb)
+        {
+            Int32 idLow = UnsafeGetInt32(pb);
+            Int32 idHigh = UnsafeGetInt32(&pb[4]);
+            return (((Int64)idHigh) << 32) | ((UInt32)idLow);
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code. Caller needs to validate arguments.")]
+        [SecurityCritical]
+        unsafe Int32 UnsafeGetInt32(byte* pb)
+        {
+            int value = pb[3];
+            value <<= 8;
+            value |= pb[2];
+            value <<= 8;
+            value |= pb[1];
+            value <<= 8;
+            value |= pb[0];
+            return value;
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code. Caller needs to validate arguments.")]
+        [SecurityCritical]
+        unsafe void UnsafeSetInt64(Int64 value, byte* pb)
+        {
+            UnsafeSetInt32((int)value, pb);
+            UnsafeSetInt32((int)(value >> 32), &pb[4]);
+        }
+
+        [Fx.Tag.SecurityNote(Critical = "Contains unsafe code. Caller needs to validate arguments.")]
+        [SecurityCritical]
+        unsafe void UnsafeSetInt32(Int32 value, byte* pb)
+        {
+            pb[0] = (byte)value;
+            value >>= 8;
+            pb[1] = (byte)value;
+            value >>= 8;
+            pb[2] = (byte)value;
+            value >>= 8;
+            pb[3] = (byte)value;
+        }
+    }
+}

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/XmlBaseReader.cs.REMOVED.git-id

@@ -0,0 +1 @@
+008ed195fb5be846e544d683f6ae95ec2f25c1fe

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/XmlBinaryNodeType.cs

@@ -0,0 +1,275 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.Xml
+{
+    // Element           => StartElement Attribute* Content EndElement
+    //                    | StartElement Attribute* Text // Text must be WithEndElement
+    //                    | Array StartElement Attribute* EndElement type MB32(Count) byte[Count * sizeof(type)]
+
+    // StartElement      => ShortElementNode Name(LocalName)
+    //                    | ElementNode Name(Prefix) Name(LocalName)
+    //                    | ShortDictionaryElementNode MB32(LocalName)
+    //                    | PrefixDictionaryElement[A-Z]Node MB32(LocalName)
+    //                    | DictionaryElementNode Name(Prefix) MB32(LocalName)
+    //                    | PrefixElement[A-Z]Node Name(LocalName)
+
+    // EndElement        => EndElementNode
+    // Content           => (Element | ArrayElement | Text | Comment)*
+
+    // Attribute         => ShortAttributeNode Name(LocalName) Text
+    //                    | AttributeNode Name(Prefix) Name(LocalName) Text
+    //                    | ShortDictionaryAttributeNode MB32(LocalName) Text
+    //                    | DictionaryAttributeNode Name(Prefix) MB32(LocalName) Text
+    //                    | ShortXmlnsAttributeNode Name(Namespace)
+    //                    | XmlnsAttributeNode Name(Prefix) Name(Namespace)
+    //                    | ShortDictionaryXmlnsAttributeNode MB32(Namespace)
+    //                    | DictionaryXmlnsAttributeNode Name(Prefix) MB32(Namespace)
+    //                    | PrefixAttribute[A-Z] Name(LocalName) Text
+    //                    | PrefixDictionaryAttribute[A-Z] MB32(LocalName) Text
+
+    // Text              => BinaryTextNode
+    //                    | CharsTextNode
+    //                    | EmptyTextNode
+    //                    | DictionaryTextNode MB32(Id)
+    //                    | ZeroTextNode
+    //                    | OneTextNode
+    //                    | TrueTextNode
+    //                    | FalseTextNode
+    //                    | Int8TextNode  Int8
+    //                    | Int16TextNode Int16
+    //                    | Int32TextNode Int32
+    //                    | Int64TextNode Int64
+    //                    | FloatTextNode Float
+    //                    | DoubleTextNode Double
+    //                    | DecimalTextNode Decimal
+    //                    | DateTimeTextNode DateTime
+    //                    | StartListNode Text* EndListNode // Restriction: Cannot nest ListNode
+    //                    | UniqueIdTextNode byte[16]       // byte[16] is a Guid (from Guid.ToBinary()) (urn:uuid:xxxx-xxxx-xxx)
+    //                    | GuidTextNode byte[16]           // byte[16] is a Guid (from Guid.ToBinary()) (xxxx-xxxx-xxx)
+    //                    | TimeSpanNode Int64
+    //                    | UInt64TextNode UInt64
+    //                    | BoolTextNode Int8
+    // BinaryText        => Bytes8TextNode  UInt8  byte*
+    //                    | Bytes16TextNode UInt16 byte*
+    //                    | Bytes32TextNode UInt31  byte*
+    // CharsText         => Chars8TextNode  UInt8  byte* // UTF8Chars
+    //                    | Chars16TextNode UInt16 byte*
+    //                    | Chars32TextNode Unt31  byte*
+    //                    | UnicodeChars8TextNode UInt8 char*
+    //                    | UnicodeChars16TextNode UInt16 char*
+    //                    | UnicodeChars32TextNode UInt31 char*
+    //                    | QNameDictionaryTextNode UInt8 MB32(LocalName) // UInt8 0-25 => 'a'-'z'
+    // Comment           => CommentNode Name(Text)
+    // Name              => MB32 byte* // Length, UTF8Chars
+    // MB32(x:x>=0x80)   => byte(0x80 | (x & 0x7F)) MB32(x >> 7)
+    // MB32(x:x<0x80)    => byte(x)
+
+
+    // In order to help differentiate text from binary (where someone mixes up format and implementation) we overlay binary
+    // nodes that are illegal to start a document with text characters that are legal to start a document.  Specifically these values are:
+    // ' ' = 32
+    // '\t' = 9
+    // '\n' = 10
+    // '\r' = 13
+    // '<' = 60
+    // The attribute nodes (MinAttribute to MaxAttribute) overlay all of these values and are invalid as the first byte of the document
+
+    enum XmlBinaryNodeType
+    {
+        // ProcessingInstruction = 0, // Reserved (Not supported)
+        EndElement = 1,
+        Comment = 2,
+        Array = 3,
+
+        MinAttribute = Array + 1,
+        ShortAttribute = MinAttribute + 0,
+        Attribute = MinAttribute + 1,
+        ShortDictionaryAttribute = MinAttribute + 2,
+        DictionaryAttribute = MinAttribute + 3,
+        ShortXmlnsAttribute = MinAttribute + 4,
+        XmlnsAttribute = MinAttribute + 5,
+        ShortDictionaryXmlnsAttribute = MinAttribute + 6,
+        DictionaryXmlnsAttribute = MinAttribute + 7,
+        PrefixDictionaryAttributeA = MinAttribute + 8,
+        PrefixDictionaryAttributeB = PrefixDictionaryAttributeA + 1,
+        PrefixDictionaryAttributeC = PrefixDictionaryAttributeB + 1,
+        PrefixDictionaryAttributeD = PrefixDictionaryAttributeC + 1,
+        PrefixDictionaryAttributeE = PrefixDictionaryAttributeD + 1,
+        PrefixDictionaryAttributeF = PrefixDictionaryAttributeE + 1,
+        PrefixDictionaryAttributeG = PrefixDictionaryAttributeF + 1,
+        PrefixDictionaryAttributeH = PrefixDictionaryAttributeG + 1,
+        PrefixDictionaryAttributeI = PrefixDictionaryAttributeH + 1,
+        PrefixDictionaryAttributeJ = PrefixDictionaryAttributeI + 1,
+        PrefixDictionaryAttributeK = PrefixDictionaryAttributeJ + 1,
+        PrefixDictionaryAttributeL = PrefixDictionaryAttributeK + 1,
+        PrefixDictionaryAttributeM = PrefixDictionaryAttributeL + 1,
+        PrefixDictionaryAttributeN = PrefixDictionaryAttributeM + 1,
+        PrefixDictionaryAttributeO = PrefixDictionaryAttributeN + 1,
+        PrefixDictionaryAttributeP = PrefixDictionaryAttributeO + 1,
+        PrefixDictionaryAttributeQ = PrefixDictionaryAttributeP + 1,
+        PrefixDictionaryAttributeR = PrefixDictionaryAttributeQ + 1,
+        PrefixDictionaryAttributeS = PrefixDictionaryAttributeR + 1,
+        PrefixDictionaryAttributeT = PrefixDictionaryAttributeS + 1,
+        PrefixDictionaryAttributeU = PrefixDictionaryAttributeT + 1,
+        PrefixDictionaryAttributeV = PrefixDictionaryAttributeU + 1,
+        PrefixDictionaryAttributeW = PrefixDictionaryAttributeV + 1,
+        PrefixDictionaryAttributeX = PrefixDictionaryAttributeW + 1,
+        PrefixDictionaryAttributeY = PrefixDictionaryAttributeX + 1,
+        PrefixDictionaryAttributeZ = PrefixDictionaryAttributeY + 1,
+        PrefixAttributeA = PrefixDictionaryAttributeZ + 1,
+        PrefixAttributeB = PrefixAttributeA + 1,
+        PrefixAttributeC = PrefixAttributeB + 1,
+        PrefixAttributeD = PrefixAttributeC + 1,
+        PrefixAttributeE = PrefixAttributeD + 1,
+        PrefixAttributeF = PrefixAttributeE + 1,
+        PrefixAttributeG = PrefixAttributeF + 1,
+        PrefixAttributeH = PrefixAttributeG + 1,
+        PrefixAttributeI = PrefixAttributeH + 1,
+        PrefixAttributeJ = PrefixAttributeI + 1,
+        PrefixAttributeK = PrefixAttributeJ + 1,
+        PrefixAttributeL = PrefixAttributeK + 1,
+        PrefixAttributeM = PrefixAttributeL + 1,
+        PrefixAttributeN = PrefixAttributeM + 1,
+        PrefixAttributeO = PrefixAttributeN + 1,
+        PrefixAttributeP = PrefixAttributeO + 1,
+        PrefixAttributeQ = PrefixAttributeP + 1,
+        PrefixAttributeR = PrefixAttributeQ + 1,
+        PrefixAttributeS = PrefixAttributeR + 1,
+        PrefixAttributeT = PrefixAttributeS + 1,
+        PrefixAttributeU = PrefixAttributeT + 1,
+        PrefixAttributeV = PrefixAttributeU + 1,
+        PrefixAttributeW = PrefixAttributeV + 1,
+        PrefixAttributeX = PrefixAttributeW + 1,
+        PrefixAttributeY = PrefixAttributeX + 1,
+        PrefixAttributeZ = PrefixAttributeY + 1,
+        MaxAttribute = PrefixAttributeZ,
+
+        MinElement = MaxAttribute + 1,
+        ShortElement = MinElement,
+        Element = MinElement + 1,
+        ShortDictionaryElement = MinElement + 2,
+        DictionaryElement = MinElement + 3,
+        PrefixDictionaryElementA = MinElement + 4,
+        PrefixDictionaryElementB = PrefixDictionaryElementA + 1,
+        PrefixDictionaryElementC = PrefixDictionaryElementB + 1,
+        PrefixDictionaryElementD = PrefixDictionaryElementC + 1,
+        PrefixDictionaryElementE = PrefixDictionaryElementD + 1,
+        PrefixDictionaryElementF = PrefixDictionaryElementE + 1,
+        PrefixDictionaryElementG = PrefixDictionaryElementF + 1,
+        PrefixDictionaryElementH = PrefixDictionaryElementG + 1,
+        PrefixDictionaryElementI = PrefixDictionaryElementH + 1,
+        PrefixDictionaryElementJ = PrefixDictionaryElementI + 1,
+        PrefixDictionaryElementK = PrefixDictionaryElementJ + 1,
+        PrefixDictionaryElementL = PrefixDictionaryElementK + 1,
+        PrefixDictionaryElementM = PrefixDictionaryElementL + 1,
+        PrefixDictionaryElementN = PrefixDictionaryElementM + 1,
+        PrefixDictionaryElementO = PrefixDictionaryElementN + 1,
+        PrefixDictionaryElementP = PrefixDictionaryElementO + 1,
+        PrefixDictionaryElementQ = PrefixDictionaryElementP + 1,
+        PrefixDictionaryElementR = PrefixDictionaryElementQ + 1,
+        PrefixDictionaryElementS = PrefixDictionaryElementR + 1,
+        PrefixDictionaryElementT = PrefixDictionaryElementS + 1,
+        PrefixDictionaryElementU = PrefixDictionaryElementT + 1,
+        PrefixDictionaryElementV = PrefixDictionaryElementU + 1,
+        PrefixDictionaryElementW = PrefixDictionaryElementV + 1,
+        PrefixDictionaryElementX = PrefixDictionaryElementW + 1,
+        PrefixDictionaryElementY = PrefixDictionaryElementX + 1,
+        PrefixDictionaryElementZ = PrefixDictionaryElementY + 1,
+        PrefixElementA = PrefixDictionaryElementZ + 1,
+        PrefixElementB = PrefixElementA + 1,
+        PrefixElementC = PrefixElementB + 1,
+        PrefixElementD = PrefixElementC + 1,
+        PrefixElementE = PrefixElementD + 1,
+        PrefixElementF = PrefixElementE + 1,
+        PrefixElementG = PrefixElementF + 1,
+        PrefixElementH = PrefixElementG + 1,
+        PrefixElementI = PrefixElementH + 1,
+        PrefixElementJ = PrefixElementI + 1,
+        PrefixElementK = PrefixElementJ + 1,
+        PrefixElementL = PrefixElementK + 1,
+        PrefixElementM = PrefixElementL + 1,
+        PrefixElementN = PrefixElementM + 1,
+        PrefixElementO = PrefixElementN + 1,
+        PrefixElementP = PrefixElementO + 1,
+        PrefixElementQ = PrefixElementP + 1,
+        PrefixElementR = PrefixElementQ + 1,
+        PrefixElementS = PrefixElementR + 1,
+        PrefixElementT = PrefixElementS + 1,
+        PrefixElementU = PrefixElementT + 1,
+        PrefixElementV = PrefixElementU + 1,
+        PrefixElementW = PrefixElementV + 1,
+        PrefixElementX = PrefixElementW + 1,
+        PrefixElementY = PrefixElementX + 1,
+        PrefixElementZ = PrefixElementY + 1,
+        MaxElement = PrefixElementZ,
+
+        // MinorVersion = MaxElement + 1, // Reserved (Not supported)
+
+        MinText = 0x80, // Must be even 
+        ZeroText = MinText,
+        OneText = MinText + 1 * 2,
+        FalseText = MinText + 2 * 2,
+        TrueText = MinText + 3 * 2,
+        Int8Text = MinText + 4 * 2,
+        Int16Text = MinText + 5 * 2,
+        Int32Text = MinText + 6 * 2,
+        Int64Text = MinText + 7 * 2,
+        FloatText = MinText + 8 * 2,
+        DoubleText = MinText + 9 * 2,
+        DecimalText = MinText + 10 * 2,
+        DateTimeText = MinText + 11 * 2,
+        Chars8Text = MinText + 12 * 2,
+        Chars16Text = MinText + 13 * 2,
+        Chars32Text = MinText + 14 * 2,
+        Bytes8Text = MinText + 15 * 2,
+        Bytes16Text = MinText + 16 * 2,
+        Bytes32Text = MinText + 17 * 2,
+        StartListText = MinText + 18 * 2,
+        EndListText = MinText + 19 * 2,
+        EmptyText = MinText + 20 * 2,
+        DictionaryText = MinText + 21 * 2,
+        UniqueIdText = MinText + 22 * 2,
+        TimeSpanText = MinText + 23 * 2,
+        GuidText = MinText + 24 * 2,
+        UInt64Text = MinText + 25 * 2,
+        BoolText = MinText + 26 * 2,
+        UnicodeChars8Text = MinText + 27 * 2,
+        UnicodeChars16Text = MinText + 28 * 2,
+        UnicodeChars32Text = MinText + 29 * 2,
+        QNameDictionaryText = MinText + 30 * 2,
+
+        ZeroTextWithEndElement = ZeroText + 1,
+        OneTextWithEndElement = OneText + 1,
+        FalseTextWithEndElement = FalseText + 1,
+        TrueTextWithEndElement = TrueText + 1,
+        Int8TextWithEndElement = Int8Text + 1,
+        Int16TextWithEndElement = Int16Text + 1,
+        Int32TextWithEndElement = Int32Text + 1,
+        Int64TextWithEndElement = Int64Text + 1,
+        FloatTextWithEndElement = FloatText + 1,
+        DoubleTextWithEndElement = DoubleText + 1,
+        DecimalTextWithEndElement = DecimalText + 1,
+        DateTimeTextWithEndElement = DateTimeText + 1,
+        Chars8TextWithEndElement = Chars8Text + 1,
+        Chars16TextWithEndElement = Chars16Text + 1,
+        Chars32TextWithEndElement = Chars32Text + 1,
+        Bytes8TextWithEndElement = Bytes8Text + 1,
+        Bytes16TextWithEndElement = Bytes16Text + 1,
+        Bytes32TextWithEndElement = Bytes32Text + 1,
+        StartListTextWithEndElement = StartListText + 1,
+        EndListTextWithEndElement = EndListText + 1,
+        EmptyTextWithEndElement = EmptyText + 1,
+        DictionaryTextWithEndElement = DictionaryText + 1,
+        UniqueIdTextWithEndElement = UniqueIdText + 1,
+        TimeSpanTextWithEndElement = TimeSpanText + 1,
+        GuidTextWithEndElement = GuidText + 1,
+        UInt64TextWithEndElement = UInt64Text + 1,
+        BoolTextWithEndElement = BoolText + 1,
+        UnicodeChars8TextWithEndElement = UnicodeChars8Text + 1,
+        UnicodeChars16TextWithEndElement = UnicodeChars16Text + 1,
+        UnicodeChars32TextWithEndElement = UnicodeChars32Text + 1,
+        QNameDictionaryTextWithEndElement = QNameDictionaryText + 1,
+        MaxText = QNameDictionaryTextWithEndElement
+    }
+}

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/XmlBinaryReaderSession.cs

@@ -0,0 +1,130 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+using StringHandle = System.Int64;
+
+namespace System.Xml
+{
+    using System.Xml;
+    using System.Collections.Generic;
+    using System.Runtime.Serialization;
+
+    public class XmlBinaryReaderSession : IXmlDictionary
+    {
+        const int MaxArrayEntries = 2048;
+
+        XmlDictionaryString[] strings;
+        Dictionary<int, XmlDictionaryString> stringDict;
+
+        public XmlBinaryReaderSession()
+        {
+        }
+
+        public XmlDictionaryString Add(int id, string value)
+        {
+            if (id < 0)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException(SR.GetString(SR.XmlInvalidID)));
+            if (value == null)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value");
+            XmlDictionaryString xmlString;
+            if (TryLookup(id, out xmlString))
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.XmlIDDefined)));
+
+            xmlString = new XmlDictionaryString(this, value, id);
+            if (id >= MaxArrayEntries)
+            {
+                if (stringDict == null)
+                    this.stringDict = new Dictionary<int, XmlDictionaryString>();
+
+                this.stringDict.Add(id, xmlString);
+            }
+            else
+            {
+                if (strings == null)
+                {
+                    strings = new XmlDictionaryString[Math.Max(id + 1, 16)];
+                }
+                else if (id >= strings.Length)
+                {
+                    XmlDictionaryString[] newStrings = new XmlDictionaryString[Math.Min(Math.Max(id + 1, strings.Length * 2), MaxArrayEntries)];
+                    Array.Copy(strings, newStrings, strings.Length);
+                    strings = newStrings;
+                }
+                strings[id] = xmlString;
+            }
+            return xmlString;
+        }
+
+        public bool TryLookup(int key, out XmlDictionaryString result)
+        {
+            if (strings != null && key >= 0 && key < strings.Length)
+            {
+                result = strings[key];
+                return result != null;
+            }
+            else if (key >= MaxArrayEntries)
+            {
+                if (this.stringDict != null)
+                    return this.stringDict.TryGetValue(key, out result);
+            }
+            result = null;
+            return false;
+        }
+
+        public bool TryLookup(string value, out XmlDictionaryString result)
+        {
+            if (value == null)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value");
+
+            if (strings != null)
+            {
+                for (int i = 0; i < strings.Length; i++)
+                {
+                    XmlDictionaryString s = strings[i];
+                    if (s != null && s.Value == value)
+                    {
+                        result = s;
+                        return true;
+                    }
+                }
+            }
+
+            if (this.stringDict != null)
+            {
+                foreach (XmlDictionaryString s in this.stringDict.Values)
+                {
+                    if (s.Value == value)
+                    {
+                        result = s;
+                        return true;
+                    }
+                }
+            }
+
+            result = null;
+            return false;
+        }
+
+        public bool TryLookup(XmlDictionaryString value, out XmlDictionaryString result)
+        {
+            if (value == null)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("value"));
+            if (value.Dictionary != this)
+            {
+                result = null;
+                return false;
+            }
+            result = value;
+            return true;
+        }
+
+        public void Clear()
+        {
+            if (strings != null)
+                Array.Clear(strings, 0, strings.Length);
+
+            if (this.stringDict != null)
+                this.stringDict.Clear();
+        }
+    }
+}

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/XmlBinaryWriterSession.cs

@@ -0,0 +1,260 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.Xml
+{
+    using System;
+    using System.Xml;
+    using System.Collections;
+    using System.Diagnostics;
+    using System.Runtime.Serialization;
+    using System.Collections.Generic;
+    using System.Collections.ObjectModel;
+
+    public class XmlBinaryWriterSession
+    {
+        PriorityDictionary<string, int> strings;
+        PriorityDictionary<IXmlDictionary, IntArray> maps;
+        int nextKey;
+
+        public XmlBinaryWriterSession()
+        {
+            this.nextKey = 0;
+            this.maps = new PriorityDictionary<IXmlDictionary, IntArray>();
+            this.strings = new PriorityDictionary<string, int>();
+        }
+
+        public virtual bool TryAdd(XmlDictionaryString value, out int key)
+        {
+            IntArray keys;
+            if (value == null)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value");
+
+            if (maps.TryGetValue(value.Dictionary, out keys))
+            {
+                key = (keys[value.Key] - 1);
+
+                if (key != -1)
+                {
+                    // If the key is already set, then something is wrong
+                    throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.XmlKeyAlreadyExists)));
+                }
+
+                key = Add(value.Value);
+                keys[value.Key] = (key + 1);
+                return true;
+            }
+
+            key = Add(value.Value);
+            keys = AddKeys(value.Dictionary, value.Key + 1);
+            keys[value.Key] = (key + 1);
+            return true;
+        }
+
+        int Add(string s)
+        {
+            int key = this.nextKey++;
+            strings.Add(s, key);
+            return key;
+        }
+
+        IntArray AddKeys(IXmlDictionary dictionary, int minCount)
+        {
+            IntArray keys = new IntArray(Math.Max(minCount, 16));
+            maps.Add(dictionary, keys);
+            return keys;
+        }
+
+        public void Reset()
+        {
+            nextKey = 0;
+            maps.Clear();
+            strings.Clear();
+        }
+
+        internal bool TryLookup(XmlDictionaryString s, out int key)
+        {
+            IntArray keys;
+            if (maps.TryGetValue(s.Dictionary, out keys))
+            {
+                key = (keys[s.Key] - 1);
+
+                if (key != -1)
+                {
+                    return true;
+                }
+            }
+
+            if (strings.TryGetValue(s.Value, out key))
+            {
+                if (keys == null)
+                {
+                    keys = AddKeys(s.Dictionary, s.Key + 1);
+                }
+
+                keys[s.Key] = (key + 1);
+                return true;
+            }
+
+            key = -1;
+            return false;
+        }
+
+        class PriorityDictionary<K, V> where K : class
+        {
+            Dictionary<K, V> dictionary;
+            Entry[] list;
+            int listCount;
+            int now;
+
+            public PriorityDictionary()
+            {
+                list = new Entry[16];
+            }
+
+            public void Clear()
+            {
+                now = 0;
+                listCount = 0;
+                Array.Clear(list, 0, list.Length);
+                if (dictionary != null)
+                    dictionary.Clear();
+            }
+
+            public bool TryGetValue(K key, out V value)
+            {
+                for (int i = 0; i < listCount; i++)
+                {
+                    if (list[i].Key == key)
+                    {
+                        value = list[i].Value;
+                        list[i].Time = Now;
+                        return true;
+                    }
+                }
+
+                for (int i = 0; i < listCount; i++)
+                {
+                    if (list[i].Key.Equals(key))
+                    {
+                        value = list[i].Value;
+                        list[i].Time = Now;
+                        return true;
+                    }
+                }
+
+                if (dictionary == null)
+                {
+                    value = default(V);
+                    return false;
+                }
+
+                if (!dictionary.TryGetValue(key, out value))
+                {
+                    return false;
+                }
+
+                int minIndex = 0;
+                int minTime = list[0].Time;
+                for (int i = 1; i < listCount; i++)
+                {
+                    if (list[i].Time < minTime)
+                    {
+                        minIndex = i;
+                        minTime = list[i].Time;
+                    }
+                }
+
+                list[minIndex].Key = key;
+                list[minIndex].Value = value;
+                list[minIndex].Time = Now;
+                return true;
+            }
+
+            public void Add(K key, V value)
+            {
+                if (listCount < list.Length)
+                {
+                    list[listCount].Key = key;
+                    list[listCount].Value = value;
+                    listCount++;
+                }
+                else
+                {
+                    if (dictionary == null)
+                    {
+                        dictionary = new Dictionary<K, V>();
+                        for (int i = 0; i < listCount; i++)
+                        {
+                            dictionary.Add(list[i].Key, list[i].Value);
+                        }
+                    }
+
+                    dictionary.Add(key, value);
+                }
+            }
+
+            int Now
+            {
+                get
+                {
+                    if (++now == int.MaxValue)
+                    {
+                        DecreaseAll();
+                    }
+
+                    return now;
+                }
+            }
+
+            void DecreaseAll()
+            {
+                for (int i = 0; i < listCount; i++)
+                {
+                    list[i].Time /= 2;
+                }
+
+                now /= 2;
+            }
+
+            struct Entry
+            {
+                public K Key;
+                public V Value;
+                public int Time;
+            }
+        }
+
+        class IntArray
+        {
+            int[] array;
+
+            public IntArray(int size)
+            {
+                this.array = new int[size];
+            }
+
+            public int this[int index]
+            {
+                get
+                {
+                    if (index >= array.Length)
+                        return 0;
+
+                    return array[index];
+                }
+                set
+                {
+                    if (index >= array.Length)
+                    {
+                        int[] newArray = new int[Math.Max(index + 1, array.Length * 2)];
+                        Array.Copy(array, newArray, array.Length);
+                        array = newArray;
+                    }
+
+                    array[index] = value;
+                }
+            }
+        }
+    }
+}

mcs/class/referencesource/System.Runtime.Serialization/System/Xml/XmlDelegatedReader.cs

@@ -0,0 +1,451 @@
+//------------------------------------------------------------
+// Copyright (c) Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------
+namespace System.Xml
+{
+    using System;
+    using System.IO;
+    using System.Xml;
+    using System.Text;
+    using System.Diagnostics;
+
+#if NO
+    public class XmlDelegatedReader : XmlDictionaryReader, IXmlLineInfo
+    {
+        XmlDictionaryReader reader;
+
+        public XmlDelegatedReader(XmlDictionaryReader reader)
+        {
+            if (reader == null)
+                throw System.Runtime.Serialization.DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("reader"));
+
+            this.reader = reader;
+        }
+
+        protected XmlDictionaryReader Reader
+        {
+            get
+            {
+                return reader;
+            }
+        }
+
+        public override int AttributeCount
+        {
+            get
+            {
+                return reader.AttributeCount;
+            }
+        }
+
+        public override string BaseURI
+        {
+            get
+            {
+                return reader.BaseURI;
+            }
+        }
+
+        public override void Close()
+        {
+            reader.Close();
+        }
+
+        public override int Depth
+        {
+            get
+            {
+                return reader.Depth;
+            }
+        }
+
+        public override bool EOF
+        {
+            get
+            {
+                return reader.EOF;
+            }
+        }
+
+        public override string GetAttribute(int index)
+        {
+            return reader.GetAttribute(index);
+        }
+
+        public override string GetAttribute(string name)
+        {
+            return reader.GetAttribute(name);
+        }
+
+        public override string GetAttribute(string name, string ns)
+        {
+            return reader.GetAttribute(name, ns);
+        }
+
+        public override bool HasValue
+        {
+            get
+            {
+                return reader.HasValue;
+            }
+        }
+
+        public override bool IsDefault
+        {
+            get
+            {
+                return reader.IsDefault;
+            }
+        }
+
+        public override bool IsEmptyElement
+        {
+            get
+            {
+                return reader.IsEmptyElement;
+            }
+        }
+
+        public override bool IsLocalName(string localName) 
+        {
+            return reader.IsLocalName(localName);
+        }
+
+        public override bool IsNamespaceUri(string ns) 
+        {
+            return reader.IsNamespaceUri(ns);
+        }
+
+        public override bool IsStartElement(string localName) 
+        {
+            return reader.IsStartElement(localName);
+        }
+
+        public override bool IsStartElement(string localName, string ns) 
+        {
+            return reader.IsStartElement(localName, ns);
+        }
+
+        public override string LocalName
+        {
+            get 
+            {
+                return reader.LocalName;
+            }
+        }
+
+        public override string LookupNamespace(string ns)
+        {
+            return reader.LookupNamespace(ns);
+        }
+
+        public override void MoveToAttribute(int index)
+        {
+            reader.MoveToAttribute(index);
+        }
+
+        public override bool MoveToAttribute(string name)
+        {
+            return reader.MoveToAttribute(name);
+        }
+
+        public override bool MoveToAttribute(string name, string ns)
+        {
+            return reader.MoveToAttribute(name, ns);
+        }
+
+        public override bool MoveToElement()
+        {
+            return reader.MoveToElement();
+        }
+
+        public override bool MoveToFirstAttribute()
+        {
+            return reader.MoveToFirstAttribute();
+        }
+
+        public override bool MoveToNextAttribute()
+        {
+            return reader.MoveToNextAttribute();
+        }
+
+        public override string Name
+        {
+            get
+            {
+                return reader.Name;
+            }
+        }
+
+        public override string NamespaceURI
+        {
+            get
+            {
+                return reader.NamespaceURI;
+            }
+        }
+
+        public override XmlNameTable NameTable
+        {
+            get
+            {
+                return reader.NameTable;
+            }
+        }
+
+        public override XmlNodeType NodeType
+        {
+            get
+            {
+                return reader.NodeType;
+            }
+        }
+
+        public override string Prefix
+        {
+            get
+            {
+                return reader.Prefix;
+            }
+        }
+
+        public override char QuoteChar
+        {
+            get
+            {
+                return reader.QuoteChar;
+            }
+        }
+
+        public override bool Read()
+        {
+            return reader.Read();
+        }
+
+        public override bool ReadAttributeValue()
+        {
+            return reader.ReadAttributeValue();
+        }
+
+        public override string ReadElementString(string localName)
+        {
+            return reader.ReadElementString(localName);
+        }
+
+        public override string ReadElementString(string localName, string ns)
+        {
+            return reader.ReadElementString(localName, ns);
+        }
+
+        public override string ReadInnerXml()
+        {
+            return reader.ReadInnerXml();
+        }
+
+        public override string ReadOuterXml()
+        {
+            return reader.ReadOuterXml();
+        }
+
+        public override void ReadStartElement(string localName)
+        {
+            reader.ReadStartElement(localName);
+        }
+
+        public override void ReadStartElement(string localName, string ns)
+        {
+            reader.ReadStartElement(localName, ns);
+        }
+
+        public override void ReadEndElement()
+        {
+            reader.ReadEndElement();
+        }
+
+        public override string ReadString()
+        {
+            return reader.ReadString();
+        }
+
+        public override ReadState ReadState
+        {
+            get
+            {
+                return reader.ReadState;
+            }
+        }
+
+        public override void ResolveEntity()
+        {
+            reader.ResolveEntity();
+        }
+
+        public override string this[int index]
+        {
+            get 
+            {
+                return reader[index];
+            }
+        }
+
+        public override string this[string name]
+        {
+            get
+            {
+                return reader[name];
+            }
+        }
+
+        public override string this[string name, string ns]
+        {
+            get
+            {
+                return reader[name, ns];
+            }
+        }
+
+        public override string Value
+        {
+            get
+            {
+                return reader.Value;
+            }
+        }
+
+        public override string XmlLang
+        {
+            get
+            {
+                return reader.XmlLang;
+            }
+        }
+
+        public override XmlSpace XmlSpace
+        {
+            get
+            {
+                return reader.XmlSpace;
+            }
+        }
+
+        public override int ReadBase64(byte[] buffer, int offset, int count)
+        {
+            return reader.ReadBase64(buffer, offset, count);
+        }
+
+        public override int ReadBinHex(byte[] buffer, int offset, int count)
+        {
+            return reader.ReadBinHex(buffer, offset, count);
+        }
+
+        public override int ReadChars(char[] chars, int offset, int count)
+        {
+            return reader.ReadChars(chars, offset, count);
+        }
+
+        public override int ReadValueAsChars(char[] chars, int offset, int count)
+        {
+            return reader.ReadValueAsChars(chars, offset, count);
+        }
+
+        public override Type ValueType
+        {
+            get
+            {
+                return reader.ValueType;
+            }
+        }
+        
+        public override Boolean ReadValueAsBoolean()
+        {
+            return reader.ReadValueAsBoolean();
+        }
+
+        public override DateTime ReadValueAsDateTime()
+        {
+            return reader.ReadValueAsDateTime();
+        }
+
+        public override Decimal ReadValueAsDecimal()
+        {
+            return reader.ReadValueAsDecimal();
+        }
+
+        public override Double ReadValueAsDouble()
+        {
+            return reader.ReadValueAsDouble();
+        }
+
+        public override Int32 ReadValueAsInt32()
+        {
+            return reader.ReadValueAsInt32();
+        }
+
+        public override Int64 ReadValueAsInt64()
+        {
+            return reader.ReadValueAsInt64();
+        }
+
+        public override Single ReadValueAsSingle()
+        {
+            return reader.ReadValueAsSingle();
+        }
+
+        public override string ReadValueAsString()
+        {
+            return reader.ReadValueAsString();
+        }
+
+        public override object ReadValueAs(Type type)
+        {
+            return reader.ReadValueAs(type);
+        }
+        
+        public override bool IsStartSubsetElement()
+        {
+            return reader.IsStartSubsetElement();
+        }
+
+        public override ArraySegment<byte> GetSubset(bool advance)
+        {
+            return reader.GetSubset(advance);
+        }
+
+        public bool HasLineInfo()
+        {
+            IXmlLineInfo lineInfo = reader as IXmlLineInfo;
+            
+            if (lineInfo == null)
+                return false;
+
+            return lineInfo.HasLineInfo();
+        }
+
+        public int LineNumber
+        {
+            get
+            {
+                IXmlLineInfo lineInfo = reader as IXmlLineInfo;
+                
+                if (lineInfo == null)
+                    return 1;
+                    
+                return lineInfo.LineNumber;
+            }
+        }
+
+        public int LinePosition
+        {
+            get
+            {
+                IXmlLineInfo lineInfo = reader as IXmlLineInfo;
+                
+                if (lineInfo == null)
+                    return 1;
+                    
+                return lineInfo.LinePosition;
+            }
+        }
+    }
+#endif
+}