NeedsParentheses()

static bool System.Linq.Expressions.DebugViewWriter.NeedsParentheses ( Expression parent, Expression child )

inlinestaticprivate

Definition at line 579 of file DebugViewWriter.cs.

    {
        if (child == null)
        {
            return false;
        }
        switch (parent.NodeType)
        {
        case ExpressionType.Decrement:
        case ExpressionType.Increment:
        case ExpressionType.Unbox:
        case ExpressionType.IsTrue:
        case ExpressionType.IsFalse:
            return true;
        default:
        {
            int operatorPrecedence = GetOperatorPrecedence(child);
            int operatorPrecedence2 = GetOperatorPrecedence(parent);
            if (operatorPrecedence == operatorPrecedence2)
            {
                switch (parent.NodeType)
                {
                case ExpressionType.And:
                case ExpressionType.AndAlso:
                case ExpressionType.ExclusiveOr:
                case ExpressionType.Or:
                case ExpressionType.OrElse:
                    return false;
                case ExpressionType.Add:
                case ExpressionType.AddChecked:
                case ExpressionType.Multiply:
                case ExpressionType.MultiplyChecked:
                    return false;
                case ExpressionType.Divide:
                case ExpressionType.Modulo:
                case ExpressionType.Subtract:
                case ExpressionType.SubtractChecked:
                {
                    BinaryExpression binaryExpression = parent as BinaryExpression;
                    return child == binaryExpression.Right;
                }
                default:
                    return true;
                }
            }
            if (child != null && child.NodeType == ExpressionType.Constant && (parent.NodeType == ExpressionType.Negate || parent.NodeType == ExpressionType.NegateChecked))
            {
                return true;
            }
            return operatorPrecedence < operatorPrecedence2;
        }
        }
    }

References System.Linq.Expressions.DebugViewWriter.GetOperatorPrecedence(), and System.Linq.Expressions.Expression< TDelegate >.NodeType.

Referenced by System.Linq.Expressions.DebugViewWriter.ParenthesizedVisit(), and System.Linq.Expressions.DebugViewWriter.VisitBinary().