merge DvBool.

Author: codemzs

src/Microsoft.ML.Api/DataViewConstructionUtils.cs

@@ -158,7 +158,7 @@ private Delegate CreateGetter(int index)
                             Ch.Assert(colType.IsText);
                             return CreateConvertingGetterDelegate<String, ReadOnlyMemory<char>>(index, x => x != null ? x.AsMemory() : "".AsMemory());
                         }
-                        
+
                         // T -> T
                         if (outputType.IsGenericType && outputType.GetGenericTypeDefinition() == typeof(Nullable<>))
                             Ch.Assert(colType.RawType == Nullable.GetUnderlyingType(outputType));

src/Microsoft.ML.Api/TypedCursor.cs

@@ -310,7 +310,7 @@ private Action<TRow> GenerateSetter(IRow input, int index, InternalSchemaDefinit
                         Ch.Assert(peek == null);
                         return CreateConvertingActionSetter<ReadOnlyMemory<char>, string>(input, index, poke, x => x.ToString());
                     }
-                    
+
                     // T -> T
                     if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(Nullable<>))
                         Ch.Assert(colType.RawType == Nullable.GetUnderlyingType(fieldType));

src/Microsoft.ML.Core/Data/DvBool.cs

@@ -1551,7 +1551,7 @@ private U8 ParseU8(ref TX span)
         public bool TryParse(ref TX src, out BL dst)
         {
             Contracts.Check(!IsStdMissing(ref src), "Missing text values cannot be converted to bool value.");
-            
+
             char ch;
             switch (src.Length)
             {
@@ -1720,7 +1720,6 @@ public void Convert(ref TX span, ref TX value)
         }
         public void Convert(ref TX span, ref BL value)
         {
-            Contracts.Check(!span.IsNA, "Missing text values cannot be converted to bool value.");
             // When TryParseBL returns false, it should have set value to false.
             if (!TryParse(ref span, out value))
                 Contracts.Assert(!value);
@@ -1750,10 +1749,10 @@ public void Convert(ref TX span, ref DZ value)
         #endregion FromTX
 
         #region FromBL
-        public void Convert(ref BL src, ref I1 dst) => dst = (I1)src;
-        public void Convert(ref BL src, ref I2 dst) => dst = (I2)src;
-        public void Convert(ref BL src, ref I4 dst) => dst = (I4)src;
-        public void Convert(ref BL src, ref I8 dst) => dst = (I8)src;
+        public void Convert(ref BL src, ref I1 dst) => dst = (I1)(object)src;
+        public void Convert(ref BL src, ref I2 dst) => dst = (I2)(object)src;
+        public void Convert(ref BL src, ref I4 dst) => dst = (I4)(object)src;
+        public void Convert(ref BL src, ref I8 dst) => dst = (I8)(object)src;
         public void Convert(ref BL src, ref R4 dst) => dst = System.Convert.ToSingle(src);
         public void Convert(ref BL src, ref R8 dst) => dst = System.Convert.ToDouble(src);
         public void Convert(ref BL src, ref BL dst) => dst = src;

src/Microsoft.ML.Data/Data/Conversion.cs

@@ -120,7 +120,7 @@ public class BooleanLabelData
             public float[] Features;
 
             [ColumnName("Label")]
-            public DvBool Label;
+            public bool Label;
         }
 
         [Fact]