Added a few comments.

rstam · rstam · commit e1e12a38b7d1 · 2012-08-16T16:45:21.000-04:00
diff --git a/Driver/Linq/Expressions/ExpressionNormalizer.cs b/Driver/Linq/Expressions/ExpressionNormalizer.cs
@@ -61,6 +61,7 @@ protected override Expression VisitBinary(BinaryExpression node)
         {
             node = EnsureConstantIsOnRight(node);
 
+            // VB lifts comparisons of Nullable<T> values and C# does not, so unlift them
             if (node.Type == typeof(Nullable<bool>))
             {
                 switch (node.NodeType)
@@ -75,9 +76,9 @@ protected override Expression VisitBinary(BinaryExpression node)
                             node.NodeType,
                             node.Left,
                             node.Right,
-                            false,
-                            null,
-                            null);
+                            false, // liftToNull
+                            null, // method
+                            null); // conversion
                         break;
                 }
             }

Original file line number	Diff line number	Diff line change
`@@ -61,6 +61,7 @@ protected override Expression VisitBinary(BinaryExpression node)`
`61`	`61`	`{`
`62`	`62`	`node = EnsureConstantIsOnRight(node);`
`63`	`63`
	`64`	`+ // VB lifts comparisons of Nullable<T> values and C# does not, so unlift them`
`64`	`65`	`if (node.Type == typeof(Nullable<bool>))`
`65`	`66`	`{`
`66`	`67`	`switch (node.NodeType)`
`@@ -75,9 +76,9 @@ protected override Expression VisitBinary(BinaryExpression node)`
`75`	`76`	`node.NodeType,`
`76`	`77`	`node.Left,`
`77`	`78`	`node.Right,`
`78`		`- false,`
`79`		`- null,`
`80`		`- null);`
	`79`	`+ false, // liftToNull`
	`80`	`+ null, // method`
	`81`	`+ null); // conversion`
`81`	`82`	`break;`
`82`	`83`	`}`
`83`	`84`	`}`