New readability rule to format ternary expression

Hi,

I’d like to propose new readability rule for ternary expressions. Valid options should be:

1. Whole expression in one line:

   int x = booleanExpression ? firstIntValueExpression : secondIntValueExpression;
   

2. Each subexpression on its own line, with ? and : as starting characters:

   int x = booleanExpression
       ? firstIntValueExpression
       : secondIntValueExpression;
   

Rationale for placement expressions in separate lines:

• consistency with parameters and statement rules - parameters should be in one line or each in separate lines, statements should be each in its own line.
• each expression in its own line allows to easy grasp where it starts and ends.

Rationale for ? and : placement:

• when these operators are placed at the beginning of line, one can easy see that rest of the line is part of ternary expression.
• when these operators are placed at the end of line and expressions are long, ? and : tokens can go out of view. This makes harder to see that ternary expression is used.

Here is corresponding original SC issue, together with follow up discussion: https://stylecop.codeplex.com/discussions/253622

[julealgon]

Folks, was this abandoned? It sounded like a fair proposal, but for some odd reason discussions abruptly stopped 3 years ago?

[otac0n]

p == "Cat" ? "Animals" :
p == "Bat" ? "Equipment" :
p == "Fat" ? "Nutrition" : "None"

Should be allowed, since each line is a logical unit.