private static bool TryGetCommonType(
PrimitiveType primitiveType1,
PrimitiveType primitiveType2,
out EdmType commonType)
{
commonType = (EdmType)null;
if (TypeSemantics.IsSubTypeOf(primitiveType1, primitiveType2))
{
commonType = (EdmType)primitiveType2;
return(true);
}
if (TypeSemantics.IsSubTypeOf(primitiveType2, primitiveType1))
{
commonType = (EdmType)primitiveType1;
return(true);
}
ReadOnlyCollection <PrimitiveType> commonSuperTypes = TypeSemantics.GetPrimitiveCommonSuperTypes(primitiveType1, primitiveType2);
if (commonSuperTypes.Count <= 0)
{
return(false);
}
commonType = (EdmType)commonSuperTypes[0];
return(true);
}
private static bool TryGetCommonPrimitiveType(
TypeUsage type1,
TypeUsage type2,
out TypeUsage commonType)
{
commonType = (TypeUsage)null;
if (TypeSemantics.IsPromotableTo(type1, type2))
{
commonType = TypeSemantics.ForgetConstraints(type2);
return(true);
}
if (TypeSemantics.IsPromotableTo(type2, type1))
{
commonType = TypeSemantics.ForgetConstraints(type1);
return(true);
}
ReadOnlyCollection <PrimitiveType> commonSuperTypes = TypeSemantics.GetPrimitiveCommonSuperTypes((PrimitiveType)type1.EdmType, (PrimitiveType)type2.EdmType);
if (commonSuperTypes.Count == 0)
{
return(false);
}
commonType = TypeUsage.CreateDefaultTypeUsage((EdmType)commonSuperTypes[0]);
return(null != commonType);
}
