From baa0c3f00f3f2989a8ca3837c69a1a8e4b7ea1ad Mon Sep 17 00:00:00 2001
From: Benjamin Hodgson <bhodgson@stackoverflow.com>
Date: Mon, 19 Feb 2018 14:20:05 +0000
Subject: [PATCH] Optimise HtmlEncode to produce less garbage

do the same optimisation for HtmlDecode

remove now-unneeded reference

Add tests for new ValueStringBuilder methods

Signed-off-by: dotnet-bot-corefx-mirror <dotnet-bot@microsoft.com>
---
 .../shared/System/Text/ValueStringBuilder.cs               | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/System.Private.CoreLib/shared/System/Text/ValueStringBuilder.cs b/src/System.Private.CoreLib/shared/System/Text/ValueStringBuilder.cs
index d41bea0be9d7..1e33bdb49b4d 100644
--- a/src/System.Private.CoreLib/shared/System/Text/ValueStringBuilder.cs
+++ b/src/System.Private.CoreLib/shared/System/Text/ValueStringBuilder.cs
@@ -22,6 +22,13 @@ public ValueStringBuilder(Span<char> initialBuffer)
             _pos = 0;
         }
 
+        public ValueStringBuilder(int initialCapacity)
+        {
+            _arrayToReturnToPool = ArrayPool<char>.Shared.Rent(initialCapacity);
+            _chars = _arrayToReturnToPool;
+            _pos = 0;
+        }
+
         public int Length
         {
             get => _pos;