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Re: Code Metrics tools for IDL [message #36224]

Thu, 28 August 2003 10:05

Liam E. Gumley
Messages: 378
Registered: January 2000

Senior Member

"John" <jgreive@starband.net> wrote in message
news:c53c914e.0308280754.25f84ccb@posting.google.com...
> Hello,
> Does anyone know of any tools to calculate quality metrics for IDL
> code. For example, does anyone have a tool that would calculate
> cyclomatic complexity metrics?

See "Code Complete" by Steve McConnell, pp 394-396. To paraphrase:

The McCabe complexity for a routine may be estimated as follows:

(1) Start with 1 for the straight path through the routine

(2) Add 1 for each of the following control statements: IF, WHILE, REPEAT,
FOR, AND, OR

(3) Add 1 for each case in a CASE statement

Guidelines: if the complexity is
0-5 The routine is probably fine
6-10 Think about ways to simplify the routine
10+ Break part(s) of the routine into smaller routines which can be
called from within the parent routine

No doubt you could write a shell script to parse an IDL source file and
compute the total complexity.

Cheers,
Liam.
Practical IDL Programming
http://www.gumley.com/

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[Message index]

		Re: Code Metrics tools for IDL By: Liam E. Gumley on Thu, 28 August 2003 10:05
		Re: Code Metrics tools for IDL By: David Fanning on Thu, 28 August 2003 09:27
		Re: Code Metrics tools for IDL By: James Kuyper on Thu, 28 August 2003 09:18
		Re: Code Metrics tools for IDL By: David Fanning on Thu, 28 August 2003 09:12

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