Incorporate StringSegment from primitives

Author: rynowak

src/Microsoft.AspNet.Http/ParsingHelpers.cs

@@ -361,152 +361,6 @@ public void Reset()
         }
     }
 
-    [System.CodeDom.Compiler.GeneratedCode("App_Packages", "")]
-    internal struct StringSegment : IEquatable<StringSegment>
-    {
-        private readonly string _buffer;
-        private readonly int _offset;
-        private readonly int _count;
-
-        // <summary>
-        // Initializes a new instance of the <see cref="T:System.Object"/> class.
-        // </summary>
-        public StringSegment(string buffer, int offset, int count)
-        {
-            _buffer = buffer;
-            _offset = offset;
-            _count = count;
-        }
-
-        public string Buffer
-        {
-            get { return _buffer; }
-        }
-
-        public int Offset
-        {
-            get { return _offset; }
-        }
-
-        public int Count
-        {
-            get { return _count; }
-        }
-
-        public string Value
-        {
-            get { return _offset == -1 ? null : _buffer.Substring(_offset, _count); }
-        }
-
-        public bool HasValue
-        {
-            get { return _offset != -1 && _count != 0 && _buffer != null; }
-        }
-
-        #region Equality members
-
-        public bool Equals(StringSegment other)
-        {
-            return string.Equals(_buffer, other._buffer) && _offset == other._offset && _count == other._count;
-        }
-
-        public override bool Equals(object obj)
-        {
-            if (ReferenceEquals(null, obj))
-            {
-                return false;
-            }
-
-            return obj is StringSegment && Equals((StringSegment)obj);
-        }
-
-        public override int GetHashCode()
-        {
-            unchecked
-            {
-                int hashCode = (_buffer != null ? _buffer.GetHashCode() : 0);
-                hashCode = (hashCode * 397) ^ _offset;
-                hashCode = (hashCode * 397) ^ _count;
-                return hashCode;
-            }
-        }
-
-        public static bool operator ==(StringSegment left, StringSegment right)
-        {
-            return left.Equals(right);
-        }
-
-        public static bool operator !=(StringSegment left, StringSegment right)
-        {
-            return !left.Equals(right);
-        }
-
-        #endregion
-
-        public bool StartsWith(string text, StringComparison comparisonType)
-        {
-            if (text == null)
-            {
-                throw new ArgumentNullException(nameof(text));
-            }
-
-            int textLength = text.Length;
-            if (!HasValue || _count < textLength)
-            {
-                return false;
-            }
-
-            return string.Compare(_buffer, _offset, text, 0, textLength, comparisonType) == 0;
-        }
-
-        public bool EndsWith(string text, StringComparison comparisonType)
-        {
-            if (text == null)
-            {
-                throw new ArgumentNullException(nameof(text));
-            }
-
-            int textLength = text.Length;
-            if (!HasValue || _count < textLength)
-            {
-                return false;
-            }
-
-            return string.Compare(_buffer, _offset + _count - textLength, text, 0, textLength, comparisonType) == 0;
-        }
-
-        public bool Equals(string text, StringComparison comparisonType)
-        {
-            if (text == null)
-            {
-                throw new ArgumentNullException(nameof(text));
-            }
-
-            int textLength = text.Length;
-            if (!HasValue || _count != textLength)
-            {
-                return false;
-            }
-
-            return string.Compare(_buffer, _offset, text, 0, textLength, comparisonType) == 0;
-        }
-
-        public string Substring(int offset, int length)
-        {
-            return _buffer.Substring(_offset + offset, length);
-        }
-
-        public StringSegment Subsegment(int offset, int length)
-        {
-            return new StringSegment(_buffer, _offset + offset, length);
-        }
-
-        public override string ToString()
-        {
-            return Value ?? string.Empty;
-        }
-    }
-
     internal static class ParsingHelpers
     {
         public static StringValues GetHeader(IDictionary<string, StringValues> headers, string key)