Extracted ICodedInputStream interface
diff --git a/src/ProtocolBuffers/ICodedInputStream.cs b/src/ProtocolBuffers/ICodedInputStream.cs
new file mode 100644
index 0000000..f385454
--- /dev/null
+++ b/src/ProtocolBuffers/ICodedInputStream.cs
@@ -0,0 +1,198 @@
+using System;
+using System.Collections.Generic;
+using Google.ProtocolBuffers.Descriptors;
+
+//Disable warning CS3010: CLS-compliant interfaces must have only CLS-compliant members
+#pragma warning disable 3010
+
+namespace Google.ProtocolBuffers
+{
+ public interface ICodedInputStream
+ {
+ /// <summary>
+ /// Attempt to read a field tag, returning false if we have reached the end
+ /// of the input data.
+ /// </summary>
+ /// <remarks>
+ /// <para>
+ /// If fieldTag is non-zero and ReadTag returns true then the value in fieldName
+ /// may or may not be populated. However, if fieldTag is zero and ReadTag returns
+ /// true, then fieldName should be populated with a non-null field name.
+ /// </para><para>
+ /// In other words if ReadTag returns true then either fieldTag will be non-zero OR
+ /// fieldName will be non-zero. In some cases both may be populated, however the
+ /// builders will always prefer the fieldTag over fieldName.
+ /// </para>
+ /// </remarks>
+ [CLSCompliant(false)]
+ bool ReadTag(out uint fieldTag, out string fieldName);
+
+ /// <summary>
+ /// Read a double field from the stream.
+ /// </summary>
+ bool ReadDouble(ref double value);
+
+ /// <summary>
+ /// Read a float field from the stream.
+ /// </summary>
+ bool ReadFloat(ref float value);
+
+ /// <summary>
+ /// Read a uint64 field from the stream.
+ /// </summary>
+ [CLSCompliant(false)]
+ bool ReadUInt64(ref ulong value);
+
+ /// <summary>
+ /// Read an int64 field from the stream.
+ /// </summary>
+ bool ReadInt64(ref long value);
+
+ /// <summary>
+ /// Read an int32 field from the stream.
+ /// </summary>
+ bool ReadInt32(ref int value);
+
+ /// <summary>
+ /// Read a fixed64 field from the stream.
+ /// </summary>
+ [CLSCompliant(false)]
+ bool ReadFixed64(ref ulong value);
+
+ /// <summary>
+ /// Read a fixed32 field from the stream.
+ /// </summary>
+ [CLSCompliant(false)]
+ bool ReadFixed32(ref uint value);
+
+ /// <summary>
+ /// Read a bool field from the stream.
+ /// </summary>
+ bool ReadBool(ref bool value);
+
+ /// <summary>
+ /// Reads a string field from the stream.
+ /// </summary>
+ bool ReadString(ref string value);
+
+ /// <summary>
+ /// Reads a group field value from the stream.
+ /// </summary>
+ void ReadGroup(int fieldNumber, IBuilderLite builder,
+ ExtensionRegistry extensionRegistry);
+
+ /// <summary>
+ /// Reads a group field value from the stream and merges it into the given
+ /// UnknownFieldSet.
+ /// </summary>
+ [Obsolete]
+ void ReadUnknownGroup(int fieldNumber, IBuilderLite builder);
+
+ /// <summary>
+ /// Reads an embedded message field value from the stream.
+ /// </summary>
+ void ReadMessage(IBuilderLite builder, ExtensionRegistry extensionRegistry);
+
+ /// <summary>
+ /// Reads a bytes field value from the stream.
+ /// </summary>
+ bool ReadBytes(ref ByteString value);
+
+ /// <summary>
+ /// Reads a uint32 field value from the stream.
+ /// </summary>
+ [CLSCompliant(false)]
+ bool ReadUInt32(ref uint value);
+
+ /// <summary>
+ /// Reads an enum field value from the stream. The caller is responsible
+ /// for converting the numeric value to an actual enum.
+ /// </summary>
+ bool ReadEnum(ref IEnumLite value, out object unknown, IEnumLiteMap mapping);
+
+ /// <summary>
+ /// Reads an enum field value from the stream. If the enum is valid for type T,
+ /// then the ref value is set and it returns true. Otherwise the unkown output
+ /// value is set and this method returns false.
+ /// </summary>
+ [CLSCompliant(false)]
+ bool ReadEnum<T>(ref T value, out object unknown)
+ where T : struct, IComparable, IFormattable, IConvertible;
+
+ /// <summary>
+ /// Reads an sfixed32 field value from the stream.
+ /// </summary>
+ bool ReadSFixed32(ref int value);
+
+ /// <summary>
+ /// Reads an sfixed64 field value from the stream.
+ /// </summary>
+ bool ReadSFixed64(ref long value);
+
+ /// <summary>
+ /// Reads an sint32 field value from the stream.
+ /// </summary>
+ bool ReadSInt32(ref int value);
+
+ /// <summary>
+ /// Reads an sint64 field value from the stream.
+ /// </summary>
+ bool ReadSInt64(ref long value);
+
+ /// <summary>
+ /// Reads an array of primitive values into the list, if the wire-type of fieldTag is length-prefixed and the
+ /// type is numberic, it will read a packed array.
+ /// </summary>
+ [CLSCompliant(false)]
+ void ReadPrimitiveArray<T>(FieldType fieldType, uint fieldTag, string fieldName, ICollection<T> list);
+
+ /// <summary>
+ /// Reads an array of primitive values into the list, if the wire-type of fieldTag is length-prefixed, it will
+ /// read a packed array.
+ /// </summary>
+ [CLSCompliant(false)]
+ void ReadEnumArray(uint fieldTag, string fieldName, ICollection<IEnumLite> list, out ICollection<object> unknown, IEnumLiteMap mapping);
+
+ /// <summary>
+ /// Reads an array of primitive values into the list, if the wire-type of fieldTag is length-prefixed, it will
+ /// read a packed array.
+ /// </summary>
+ [CLSCompliant(false)]
+ void ReadEnumArray<T>(uint fieldTag, string fieldName, ICollection<T> list, out ICollection<object> unknown)
+ where T : struct, IComparable, IFormattable, IConvertible;
+
+ /// <summary>
+ /// Reads a set of messages using the <paramref name="messageType"/> as a template. T is not guaranteed to be
+ /// the most derived type, it is only the type specifier for the collection.
+ /// </summary>
+ [CLSCompliant(false)]
+ void ReadMessageArray<T>(uint fieldTag, string fieldName, ICollection<T> list, T messageType, ExtensionRegistry registry) where T : IMessageLite;
+
+ /// <summary>
+ /// Reads a set of messages using the <paramref name="messageType"/> as a template.
+ /// </summary>
+ [CLSCompliant(false)]
+ void ReadGroupArray<T>(uint fieldTag, string fieldName, ICollection<T> list, T messageType, ExtensionRegistry registry) where T : IMessageLite;
+
+ /// <summary>
+ /// Reads a field of any primitive type. Enums, groups and embedded
+ /// messages are not handled by this method.
+ /// </summary>
+ bool ReadPrimitiveField(FieldType fieldType, ref object value);
+
+ /// <summary>
+ /// Returns true if the stream has reached the end of the input. This is the
+ /// case if either the end of the underlying input source has been reached or
+ /// the stream has reached a limit created using PushLimit.
+ /// </summary>
+ bool IsAtEnd { get; }
+
+ /// <summary>
+ /// Reads and discards a single field, given its tag value.
+ /// </summary>
+ /// <returns>false if the tag is an end-group tag, in which case
+ /// nothing is skipped. Otherwise, returns true.</returns>
+ [CLSCompliant(false)]
+ bool SkipField();
+ }
+}
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