Generate BigInteger literals in CSharpHelper

Needed for code literal generation of NodaTime types
dotnet · Nov 7, 2018 · 0372f6e · 0372f6e
1 parent 1032daf
commit 0372f6e
Show file tree

Hide file tree

Showing 2 changed files with 16 additions and 1 deletion.
diff --git a/src/EFCore.Design/Design/Internal/CSharpHelper.cs b/src/EFCore.Design/Design/Internal/CSharpHelper.cs
@@ -8,6 +8,7 @@
 using System.Globalization;
 using System.Linq;
 using System.Linq.Expressions;
+using System.Numerics;
 using System.Text;
 using JetBrains.Annotations;
 using Microsoft.EntityFrameworkCore.Internal;
@@ -161,7 +162,8 @@ public CSharpHelper([NotNull] IRelationalTypeMappingSource relationalTypeMapping
                 { typeof(TimeSpan), (c, v) => c.Literal((TimeSpan)v) },
                 { typeof(uint), (c, v) => c.Literal((uint)v) },
                 { typeof(ulong), (c, v) => c.Literal((ulong)v) },
-                { typeof(ushort), (c, v) => c.Literal((ushort)v) }
+                { typeof(ushort), (c, v) => c.Literal((ushort)v) },
+                { typeof(BigInteger), (c, v) => c.Literal((BigInteger)v) }
             };
 
         /// <summary>
@@ -497,6 +499,12 @@ public virtual string Literal(TimeSpan value)
         /// </summary>
         public virtual string Literal(ushort value) => "(ushort)" + value;
 
+        /// <summary>
+        ///     This API supports the Entity Framework Core infrastructure and is not intended to be used
+        ///     directly from your code. This API may change or be removed in future releases.
+        /// </summary>
+        public virtual string Literal(BigInteger value) => $"BigInteger.Parse(\"{value.ToString()}\")";
+
         /// <summary>
         ///     This API supports the Entity Framework Core infrastructure and is not intended to be used
         ///     directly from your code. This API may change or be removed in future releases.

diff --git a/test/EFCore.Design.Tests/Design/Internal/CSharpHelperTest.cs b/test/EFCore.Design.Tests/Design/Internal/CSharpHelperTest.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Data.SqlTypes;
 using System.Linq.Expressions;
+using System.Numerics;
 using Microsoft.EntityFrameworkCore.Internal;
 using Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal;
 using Microsoft.EntityFrameworkCore.Storage;
@@ -213,6 +214,12 @@ public void Literal_works_when_MultidimensionalArray()
                 result);
         }
 
+        [Fact]
+        public void Literal_works_when_BigInteger() =>
+            Literal_works(
+                new BigInteger(42),
+                "BigInteger.Parse(\"42\")");
+
         [Fact]
         public void UnknownLiteral_throws_when_unknown()
         {