How to find "explicit int access in arrays in my source code" via regex?

Question

How can I find all my array usages that have an explicit integer as index?

Example:

const int CON = 42;
int[] arr = new int[100];
arr[34] = 12;
arr[CON] = 13;

// need to find: [100], [34]
// not         : [], [CON]

This seems to work with C# Regex and Replace but not in VS 2010 search:

\[\d+\]

(I'm sure I formulated the title awkwardly or something. Sorry.)

By using a proper parser. A simple example where it could fail is commented lines. — HamZa, Oct 28 '14 at 13:17
`^(?<!\/).*?\K(\[\d+\])(?=.*?;)` will work in C# and will not return anything commented out with a "/". — Mr. Mascaro, Oct 28 '14 at 13:35
@jbarker2160 since when does C# support `\K`? ([Looking at this answer](http://stackoverflow.com/questions/13542950/support-of-k-in-regex/13543042#13543042)) — HamZa, Oct 28 '14 at 22:57

score 2 · Accepted Answer · answered Oct 28 '14 at 13:19

2

There is a table of regex patterns used in Visual Studio on http://msdn.microsoft.com/en-us/library/2k3te2cs.aspx. In VS2010 and before, you use :d to match digits:

\[:d+\]

answered Oct 28 '14 at 13:19

kennytm

That's it! Of course OP is in for false positives, such as array declarations with `int` literals as dimensions, but that is about as far as you can go without an actual parser. – Sergey Kalinichenko Oct 28 '14 at 13:21
Thanks! Works. Exactly what I wanted. – Bitterblue Oct 28 '14 at 13:26

1 Answers1