ReduceIndex()

Expression System.Linq.Expressions.BinaryExpression.ReduceIndex ( )

inlineprivateinherited

Definition at line 196 of file BinaryExpression.cs.

    {
        IndexExpression indexExpression = (IndexExpression)Left;
        System.Collections.Generic.ArrayBuilder<ParameterExpression> builder = new System.Collections.Generic.ArrayBuilder<ParameterExpression>(indexExpression.ArgumentCount + 2);
        System.Collections.Generic.ArrayBuilder<Expression> builder2 = new System.Collections.Generic.ArrayBuilder<Expression>(indexExpression.ArgumentCount + 3);
        ParameterExpression parameterExpression = Expression.Variable(indexExpression.Object.Type, "tempObj");
        builder.UncheckedAdd(parameterExpression);
        builder2.UncheckedAdd(Expression.Assign(parameterExpression, indexExpression.Object));
        int argumentCount = indexExpression.ArgumentCount;
        System.Collections.Generic.ArrayBuilder<Expression> builder3 = new System.Collections.Generic.ArrayBuilder<Expression>(argumentCount);
        for (int i = 0; i < argumentCount; i++)
        {
            Expression argument = indexExpression.GetArgument(i);
            ParameterExpression parameterExpression2 = Expression.Variable(argument.Type, "tempArg" + i);
            builder.UncheckedAdd(parameterExpression2);
            builder3.UncheckedAdd(parameterExpression2);
            builder2.UncheckedAdd(Expression.Assign(parameterExpression2, argument));
        }
        IndexExpression left = Expression.MakeIndex(parameterExpression, indexExpression.Indexer, builder3.ToReadOnly());
        ExpressionType binaryOpFromAssignmentOp = GetBinaryOpFromAssignmentOp(NodeType);
        Expression expression = Expression.MakeBinary(binaryOpFromAssignmentOp, left, Right, liftToNull: false, Method);
        LambdaExpression conversion = GetConversion();
        if (conversion != null)
        {
            expression = Expression.Invoke(conversion, expression);
        }
        ParameterExpression parameterExpression3 = Expression.Variable(expression.Type, "tempValue");
        builder.UncheckedAdd(parameterExpression3);
        builder2.UncheckedAdd(Expression.Assign(parameterExpression3, expression));
        builder2.UncheckedAdd(Expression.Assign(left, parameterExpression3));
        return Expression.Block(builder.ToReadOnly(), builder2.ToReadOnly());
    }

References System.Linq.Expressions.Expression< TDelegate >.Assign(), System.Linq.Expressions.Expression< TDelegate >.Block(), System.Linq.Expressions.BinaryExpression.GetBinaryOpFromAssignmentOp(), System.Linq.Expressions.BinaryExpression.GetConversion(), System.Linq.Expressions.Expression< TDelegate >.Invoke(), System.Linq.Expressions.BinaryExpression.Left, System.Linq.Expressions.Expression< TDelegate >.MakeBinary(), System.Linq.Expressions.Expression< TDelegate >.MakeIndex(), System.Linq.Expressions.BinaryExpression.Method, System.Linq.Expressions.Expression< TDelegate >.NodeType, System.Linq.Expressions.BinaryExpression.Right, and System.Linq.Expressions.Expression< TDelegate >.Variable().

Referenced by System.Linq.Expressions.BinaryExpression.Reduce().