internal DbArithmeticExpression(DbExpressionKind kind, TypeUsage numericResultType, DbExpressionList args)
: base(kind, numericResultType)
{
Debug.Assert(TypeSemantics.IsNumericType(numericResultType), "DbArithmeticExpression result type must be numeric");
Debug.Assert(
DbExpressionKind.Divide == kind ||
DbExpressionKind.Minus == kind ||
DbExpressionKind.Modulo == kind ||
DbExpressionKind.Multiply == kind ||
DbExpressionKind.Plus == kind ||
DbExpressionKind.UnaryMinus == kind,
"Invalid DbExpressionKind used in DbArithmeticExpression: " + Enum.GetName(typeof(DbExpressionKind), kind)
);
Debug.Assert(args != null, "DbArithmeticExpression arguments cannot be null");
Debug.Assert(
(DbExpressionKind.UnaryMinus == kind && 1 == args.Count) ||
2 == args.Count,
"Incorrect number of arguments specified to DbArithmeticExpression"
);
this._args = args;
}
internal static bool SupportsCastToString(TypeUsage typeUsage)
{
return(TypeSemantics.IsPrimitiveType(typeUsage, PrimitiveTypeKind.String) ||
TypeSemantics.IsNumericType(typeUsage) ||
TypeSemantics.IsBooleanType(typeUsage) ||
TypeSemantics.IsPrimitiveType(typeUsage, PrimitiveTypeKind.DateTime) ||
TypeSemantics.IsPrimitiveType(typeUsage, PrimitiveTypeKind.DateTimeOffset) ||
TypeSemantics.IsPrimitiveType(typeUsage, PrimitiveTypeKind.Time) ||
TypeSemantics.IsPrimitiveType(typeUsage, PrimitiveTypeKind.Guid));
}
