1 files changed, 50 insertions, 0 deletions
diff --git a/src/mscorlib/corefx/System/Globalization/InternalGlobalizationHelper.cs b/src/mscorlib/corefx/System/Globalization/InternalGlobalizationHelper.cs
new file mode 100644
index 0000000000..0a4e6f0600
--- /dev/null
+++ b/src/mscorlib/corefx/System/Globalization/InternalGlobalizationHelper.cs
@@ -0,0 +1,50 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+
+namespace System.Globalization
+{
+    internal class InternalGloablizationHelper
+    {
+        // Copied from the TimeSpan to be used inside the globalization code and avoid internal dependancy on TimeSpan class
+        internal static long TimeToTicks(int hour, int minute, int second)
+        {
+            // totalSeconds is bounded by 2^31 * 2^12 + 2^31 * 2^8 + 2^31,
+            // which is less than 2^44, meaning we won't overflow totalSeconds.
+            long totalSeconds = (long)hour * 3600 + (long)minute * 60 + (long)second;
+            if (totalSeconds > MaxSeconds || totalSeconds < MinSeconds)
+                throw new ArgumentOutOfRangeException(null, SR.Overflow_TimeSpanTooLong);
+            return totalSeconds * TicksPerSecond;
+        }
+
+
+        //
+        // Define needed constants so globalization code can be independant from any other types
+        //
+
+        internal const long TicksPerMillisecond = 10000;
+        internal const long TicksPerTenthSecond = TicksPerMillisecond * 100;
+        internal const long TicksPerSecond = TicksPerMillisecond * 1000;   // 10,000,000
+        internal const long MaxSeconds = Int64.MaxValue / TicksPerSecond;
+        internal const long MinSeconds = Int64.MinValue / TicksPerSecond;
+        private const int DaysPerYear = 365;
+        private const int DaysPer4Years = DaysPerYear * 4 + 1;       // 1461
+        private const int DaysPer100Years = DaysPer4Years * 25 - 1;  // 36524
+        private const int DaysPer400Years = DaysPer100Years * 4 + 1; // 146097
+        private const int DaysTo10000 = DaysPer400Years * 25 - 366;  // 3652059
+        private const long TicksPerMinute = TicksPerSecond * 60;
+        private const long TicksPerHour = TicksPerMinute * 60;
+        private const long TicksPerDay = TicksPerHour * 24;
+        internal const long MaxTicks = DaysTo10000 * TicksPerDay - 1;
+        internal const long MinTicks = 0;
+        internal const long MaxMilliSeconds = Int64.MaxValue / TicksPerMillisecond;
+        internal const long MinMilliSeconds = Int64.MinValue / TicksPerMillisecond;
+
+        internal const int StringBuilderDefaultCapacity = 16;
+
+        internal const Int64 MaxOffset = TimeSpan.TicksPerHour * 14;
+        internal const Int64 MinOffset = -MaxOffset;
+    }
+}